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0 18 Crystal Structures evidence Crystal Structures of Putative Sugar Kinases from Synechococcus Elongatus PCC 7942 and Arabidopsis Thaliana TITLE
31 44 Sugar Kinases protein_type Crystal Structures of Putative Sugar Kinases from Synechococcus Elongatus PCC 7942 and Arabidopsis Thaliana TITLE
50 82 Synechococcus Elongatus PCC 7942 species Crystal Structures of Putative Sugar Kinases from Synechococcus Elongatus PCC 7942 and Arabidopsis Thaliana TITLE
87 107 Arabidopsis Thaliana species Crystal Structures of Putative Sugar Kinases from Synechococcus Elongatus PCC 7942 and Arabidopsis Thaliana TITLE
18 57 Synechococcus elongatus strain PCC 7942 species The genome of the Synechococcus elongatus strain PCC 7942 encodes a putative sugar kinase (SePSK), which shares 44.9% sequence identity with the xylulose kinase-1 (AtXK-1) from Arabidopsis thaliana. ABSTRACT
77 89 sugar kinase protein_type The genome of the Synechococcus elongatus strain PCC 7942 encodes a putative sugar kinase (SePSK), which shares 44.9% sequence identity with the xylulose kinase-1 (AtXK-1) from Arabidopsis thaliana. ABSTRACT
91 96 SePSK protein The genome of the Synechococcus elongatus strain PCC 7942 encodes a putative sugar kinase (SePSK), which shares 44.9% sequence identity with the xylulose kinase-1 (AtXK-1) from Arabidopsis thaliana. ABSTRACT
145 162 xylulose kinase-1 protein The genome of the Synechococcus elongatus strain PCC 7942 encodes a putative sugar kinase (SePSK), which shares 44.9% sequence identity with the xylulose kinase-1 (AtXK-1) from Arabidopsis thaliana. ABSTRACT
164 170 AtXK-1 protein The genome of the Synechococcus elongatus strain PCC 7942 encodes a putative sugar kinase (SePSK), which shares 44.9% sequence identity with the xylulose kinase-1 (AtXK-1) from Arabidopsis thaliana. ABSTRACT
177 197 Arabidopsis thaliana species The genome of the Synechococcus elongatus strain PCC 7942 encodes a putative sugar kinase (SePSK), which shares 44.9% sequence identity with the xylulose kinase-1 (AtXK-1) from Arabidopsis thaliana. ABSTRACT
0 18 Sequence alignment experimental_method Sequence alignment suggests that both kinases belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. ABSTRACT
38 45 kinases protein_type Sequence alignment suggests that both kinases belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. ABSTRACT
60 98 ribulokinase-like carbohydrate kinases protein_type Sequence alignment suggests that both kinases belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. ABSTRACT
116 148 FGGY family carbohydrate kinases protein_type Sequence alignment suggests that both kinases belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. ABSTRACT
8 14 solved experimental_method Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
19 29 structures evidence Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
33 38 SePSK protein Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
43 49 AtXK-1 protein Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
64 67 apo protein_state Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
78 93 in complex with protein_state Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
94 104 nucleotide chemical Here we solved the structures of SePSK and AtXK-1 in both their apo forms and in complex with nucleotide substrates. ABSTRACT
73 80 kinases protein_type The two kinases exhibit nearly identical overall architecture, with both kinases possessing ATP hydrolysis activity in the absence of substrates. ABSTRACT
92 95 ATP chemical The two kinases exhibit nearly identical overall architecture, with both kinases possessing ATP hydrolysis activity in the absence of substrates. ABSTRACT
123 144 absence of substrates protein_state The two kinases exhibit nearly identical overall architecture, with both kinases possessing ATP hydrolysis activity in the absence of substrates. ABSTRACT
17 33 enzymatic assays experimental_method In addition, our enzymatic assays suggested that SePSK has the capability to phosphorylate D-ribulose. ABSTRACT
49 54 SePSK protein In addition, our enzymatic assays suggested that SePSK has the capability to phosphorylate D-ribulose. ABSTRACT
91 101 D-ribulose chemical In addition, our enzymatic assays suggested that SePSK has the capability to phosphorylate D-ribulose. ABSTRACT
50 55 SePSK protein In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
60 66 solved experimental_method In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
71 80 structure evidence In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
84 89 SePSK protein In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
90 105 in complex with protein_state In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
106 116 D-ribulose chemical In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
141 166 substrate binding pockets site In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
170 175 SePSK protein In order to understand the catalytic mechanism of SePSK, we solved the structure of SePSK in complex with D-ribulose and found two potential substrate binding pockets in SePSK. ABSTRACT
6 36 mutation and activity analysis experimental_method Using mutation and activity analysis, we further verified the key residues important for its catalytic activity. ABSTRACT
14 35 structural comparison experimental_method Moreover, our structural comparison with other family members suggests that there are major conformational changes in SePSK upon substrate binding, facilitating the catalytic process. ABSTRACT
118 123 SePSK protein Moreover, our structural comparison with other family members suggests that there are major conformational changes in SePSK upon substrate binding, facilitating the catalytic process. ABSTRACT
169 174 SePSK protein Together, these results provide important information for a more detailed understanding of the cofactor and substrate binding mode as well as the catalytic mechanism of SePSK, and possible similarities with its plant homologue AtXK-1. ABSTRACT
211 216 plant taxonomy_domain Together, these results provide important information for a more detailed understanding of the cofactor and substrate binding mode as well as the catalytic mechanism of SePSK, and possible similarities with its plant homologue AtXK-1. ABSTRACT
227 233 AtXK-1 protein Together, these results provide important information for a more detailed understanding of the cofactor and substrate binding mode as well as the catalytic mechanism of SePSK, and possible similarities with its plant homologue AtXK-1. ABSTRACT
0 13 Carbohydrates chemical Carbohydrates are essential cellular compounds involved in the metabolic processes present in all organisms. INTRO
0 15 Phosphorylation ptm Phosphorylation is one of the various pivotal modifications of carbohydrates, and is catalyzed by specific sugar kinases. INTRO
63 76 carbohydrates chemical Phosphorylation is one of the various pivotal modifications of carbohydrates, and is catalyzed by specific sugar kinases. INTRO
107 120 sugar kinases protein_type Phosphorylation is one of the various pivotal modifications of carbohydrates, and is catalyzed by specific sugar kinases. INTRO
6 13 kinases protein_type These kinases exhibit considerable differences in their folding pattern and substrate specificity. INTRO
9 26 sequence analysis experimental_method Based on sequence analysis, they can be divided into four families, namely HSP 70_NBD family, FGGY family, Mer_B like family and Parm_like family. INTRO
75 92 HSP 70_NBD family protein_type Based on sequence analysis, they can be divided into four families, namely HSP 70_NBD family, FGGY family, Mer_B like family and Parm_like family. INTRO
94 105 FGGY family protein_type Based on sequence analysis, they can be divided into four families, namely HSP 70_NBD family, FGGY family, Mer_B like family and Parm_like family. INTRO
107 124 Mer_B like family protein_type Based on sequence analysis, they can be divided into four families, namely HSP 70_NBD family, FGGY family, Mer_B like family and Parm_like family. INTRO
129 145 Parm_like family protein_type Based on sequence analysis, they can be divided into four families, namely HSP 70_NBD family, FGGY family, Mer_B like family and Parm_like family. INTRO
4 36 FGGY family carbohydrate kinases protein_type The FGGY family carbohydrate kinases contain different types of sugar kinases, all of which possess different catalytic substrates with preferences for short-chained sugar substrates, ranging from triose to heptose. INTRO
64 77 sugar kinases protein_type The FGGY family carbohydrate kinases contain different types of sugar kinases, all of which possess different catalytic substrates with preferences for short-chained sugar substrates, ranging from triose to heptose. INTRO
166 171 sugar chemical The FGGY family carbohydrate kinases contain different types of sugar kinases, all of which possess different catalytic substrates with preferences for short-chained sugar substrates, ranging from triose to heptose. INTRO
197 203 triose chemical The FGGY family carbohydrate kinases contain different types of sugar kinases, all of which possess different catalytic substrates with preferences for short-chained sugar substrates, ranging from triose to heptose. INTRO
207 214 heptose chemical The FGGY family carbohydrate kinases contain different types of sugar kinases, all of which possess different catalytic substrates with preferences for short-chained sugar substrates, ranging from triose to heptose. INTRO
6 11 sugar chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
31 41 L-ribulose chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
43 53 erythritol chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
55 65 L-fuculose chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
67 77 D-glycerol chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
79 90 D-gluconate chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
92 102 L-xylulose chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
104 114 D-ribulose chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
116 128 L-rhamnulose chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
133 143 D-xylulose chemical These sugar substrates include L-ribulose, erythritol, L-fuculose, D-glycerol, D-gluconate, L-xylulose, D-ribulose, L-rhamnulose and D-xylulose. INTRO
0 10 Structures evidence Structures reported in the Protein Data Bank of the FGGY family carbohydrate kinases exhibit a similar overall architecture containing two protein domains, one of which is responsible for the binding of substrate, while the second is used for binding cofactor ATP. INTRO
52 84 FGGY family carbohydrate kinases protein_type Structures reported in the Protein Data Bank of the FGGY family carbohydrate kinases exhibit a similar overall architecture containing two protein domains, one of which is responsible for the binding of substrate, while the second is used for binding cofactor ATP. INTRO
260 263 ATP chemical Structures reported in the Protein Data Bank of the FGGY family carbohydrate kinases exhibit a similar overall architecture containing two protein domains, one of which is responsible for the binding of substrate, while the second is used for binding cofactor ATP. INTRO
10 25 binding pockets site While the binding pockets for substrates are at the same position, each FGGY family carbohydrate kinases uses different substrate-binding residues, resulting in high substrate specificity. INTRO
72 104 FGGY family carbohydrate kinases protein_type While the binding pockets for substrates are at the same position, each FGGY family carbohydrate kinases uses different substrate-binding residues, resulting in high substrate specificity. INTRO
120 146 substrate-binding residues site While the binding pockets for substrates are at the same position, each FGGY family carbohydrate kinases uses different substrate-binding residues, resulting in high substrate specificity. INTRO
0 15 Synpcc7942_2462 gene Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
25 38 cyanobacteria taxonomy_domain Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
39 71 Synechococcus elongatus PCC 7942 species Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
91 103 sugar kinase protein_type Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
105 110 SePSK protein Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
122 128 kinase protein_type Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
138 141 426 residue_range Synpcc7942_2462 from the cyanobacteria Synechococcus elongatus PCC 7942 encodes a putative sugar kinase (SePSK), and this kinase contains 426 amino acids. INTRO
4 13 At2g21370 gene The At2g21370 gene product from Arabidopsis thaliana, xylulose kinase-1 (AtXK-1), whose mature form contains 436 amino acids, is located in the chloroplast (ChloroP 1.1 Server). INTRO
32 52 Arabidopsis thaliana species The At2g21370 gene product from Arabidopsis thaliana, xylulose kinase-1 (AtXK-1), whose mature form contains 436 amino acids, is located in the chloroplast (ChloroP 1.1 Server). INTRO
54 71 xylulose kinase-1 protein The At2g21370 gene product from Arabidopsis thaliana, xylulose kinase-1 (AtXK-1), whose mature form contains 436 amino acids, is located in the chloroplast (ChloroP 1.1 Server). INTRO
73 79 AtXK-1 protein The At2g21370 gene product from Arabidopsis thaliana, xylulose kinase-1 (AtXK-1), whose mature form contains 436 amino acids, is located in the chloroplast (ChloroP 1.1 Server). INTRO
88 99 mature form protein_state The At2g21370 gene product from Arabidopsis thaliana, xylulose kinase-1 (AtXK-1), whose mature form contains 436 amino acids, is located in the chloroplast (ChloroP 1.1 Server). INTRO
109 112 436 residue_range The At2g21370 gene product from Arabidopsis thaliana, xylulose kinase-1 (AtXK-1), whose mature form contains 436 amino acids, is located in the chloroplast (ChloroP 1.1 Server). INTRO
0 5 SePSK protein SePSK and AtXK-1 display a sequence identity of 44.9%, and belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. INTRO
10 16 AtXK-1 protein SePSK and AtXK-1 display a sequence identity of 44.9%, and belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. INTRO
73 111 ribulokinase-like carbohydrate kinases protein_type SePSK and AtXK-1 display a sequence identity of 44.9%, and belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. INTRO
129 161 FGGY family carbohydrate kinases protein_type SePSK and AtXK-1 display a sequence identity of 44.9%, and belong to the ribulokinase-like carbohydrate kinases, a sub-family of FGGY family carbohydrate kinases. INTRO
51 66 phosphorylation ptm Members of this sub-family are responsible for the phosphorylation of sugars similar to L-ribulose and D-ribulose. INTRO
70 76 sugars chemical Members of this sub-family are responsible for the phosphorylation of sugars similar to L-ribulose and D-ribulose. INTRO
88 98 L-ribulose chemical Members of this sub-family are responsible for the phosphorylation of sugars similar to L-ribulose and D-ribulose. INTRO
103 113 D-ribulose chemical Members of this sub-family are responsible for the phosphorylation of sugars similar to L-ribulose and D-ribulose. INTRO
46 84 ribulokinase-like carbohydrate kinases protein_type The sequence and the substrate specificity of ribulokinase-like carbohydrate kinases are different, but they share the common folding feature with two domains. INTRO
0 8 Domain I structure_element Domain I exhibits a ribonuclease H-like folding pattern, and is responsible for the substrate binding, while domain II possesses an actin-like ATPase domain that binds cofactor ATP. INTRO
20 55 ribonuclease H-like folding pattern structure_element Domain I exhibits a ribonuclease H-like folding pattern, and is responsible for the substrate binding, while domain II possesses an actin-like ATPase domain that binds cofactor ATP. INTRO
109 118 domain II structure_element Domain I exhibits a ribonuclease H-like folding pattern, and is responsible for the substrate binding, while domain II possesses an actin-like ATPase domain that binds cofactor ATP. INTRO
132 156 actin-like ATPase domain structure_element Domain I exhibits a ribonuclease H-like folding pattern, and is responsible for the substrate binding, while domain II possesses an actin-like ATPase domain that binds cofactor ATP. INTRO
177 180 ATP chemical Domain I exhibits a ribonuclease H-like folding pattern, and is responsible for the substrate binding, while domain II possesses an actin-like ATPase domain that binds cofactor ATP. INTRO
13 29 xylulose kinases protein_type Two possible xylulose kinases (xylulose kinase-1: XK-1 and xylulose kinase-2: XK-2) from Arabidopsis thaliana were previously proposed. INTRO
31 48 xylulose kinase-1 protein Two possible xylulose kinases (xylulose kinase-1: XK-1 and xylulose kinase-2: XK-2) from Arabidopsis thaliana were previously proposed. INTRO
50 54 XK-1 protein Two possible xylulose kinases (xylulose kinase-1: XK-1 and xylulose kinase-2: XK-2) from Arabidopsis thaliana were previously proposed. INTRO
59 76 xylulose kinase-2 protein Two possible xylulose kinases (xylulose kinase-1: XK-1 and xylulose kinase-2: XK-2) from Arabidopsis thaliana were previously proposed. INTRO
78 82 XK-2 protein Two possible xylulose kinases (xylulose kinase-1: XK-1 and xylulose kinase-2: XK-2) from Arabidopsis thaliana were previously proposed. INTRO
89 109 Arabidopsis thaliana species Two possible xylulose kinases (xylulose kinase-1: XK-1 and xylulose kinase-2: XK-2) from Arabidopsis thaliana were previously proposed. INTRO
18 22 XK-2 protein It was shown that XK-2 (At5g49650) located in the cytosol is indeed xylulose kinase. INTRO
24 33 At5g49650 gene It was shown that XK-2 (At5g49650) located in the cytosol is indeed xylulose kinase. INTRO
68 83 xylulose kinase protein_type It was shown that XK-2 (At5g49650) located in the cytosol is indeed xylulose kinase. INTRO
25 29 XK-1 protein However, the function of XK-1 (At2g21370) inside the chloroplast stroma has remained unknown. INTRO
31 40 At2g21370 gene However, the function of XK-1 (At2g21370) inside the chloroplast stroma has remained unknown. INTRO
0 5 SePSK protein SePSK from Synechococcus elongatus strain PCC 7942 is the homolog of AtXK-1, though its physiological function and substrates remain unclear. INTRO
11 50 Synechococcus elongatus strain PCC 7942 species SePSK from Synechococcus elongatus strain PCC 7942 is the homolog of AtXK-1, though its physiological function and substrates remain unclear. INTRO
69 75 AtXK-1 protein SePSK from Synechococcus elongatus strain PCC 7942 is the homolog of AtXK-1, though its physiological function and substrates remain unclear. INTRO
104 122 crystal structures evidence In order to obtain functional and structural information about these two proteins, here we reported the crystal structures of SePSK and AtXK-1. INTRO
126 131 SePSK protein In order to obtain functional and structural information about these two proteins, here we reported the crystal structures of SePSK and AtXK-1. INTRO
136 142 AtXK-1 protein In order to obtain functional and structural information about these two proteins, here we reported the crystal structures of SePSK and AtXK-1. INTRO
63 68 SePSK protein Our findings provide new details of the catalytic mechanism of SePSK and lay the foundation for future studies into its homologs in eukaryotes. INTRO
132 142 eukaryotes taxonomy_domain Our findings provide new details of the catalytic mechanism of SePSK and lay the foundation for future studies into its homologs in eukaryotes. INTRO
8 18 structures evidence Overall structures of apo-SePSK and apo-AtXK-1 RESULTS
22 25 apo protein_state Overall structures of apo-SePSK and apo-AtXK-1 RESULTS
26 31 SePSK protein Overall structures of apo-SePSK and apo-AtXK-1 RESULTS
36 39 apo protein_state Overall structures of apo-SePSK and apo-AtXK-1 RESULTS
40 46 AtXK-1 protein Overall structures of apo-SePSK and apo-AtXK-1 RESULTS
25 30 SePSK protein The attempt to solve the SePSK structure by molecular replacement method failed with ribulokinase from Bacillus halodurans (PDB code: 3QDK, 15.7% sequence identity) as an initial model. RESULTS
31 40 structure evidence The attempt to solve the SePSK structure by molecular replacement method failed with ribulokinase from Bacillus halodurans (PDB code: 3QDK, 15.7% sequence identity) as an initial model. RESULTS
44 72 molecular replacement method experimental_method The attempt to solve the SePSK structure by molecular replacement method failed with ribulokinase from Bacillus halodurans (PDB code: 3QDK, 15.7% sequence identity) as an initial model. RESULTS
85 97 ribulokinase protein The attempt to solve the SePSK structure by molecular replacement method failed with ribulokinase from Bacillus halodurans (PDB code: 3QDK, 15.7% sequence identity) as an initial model. RESULTS
103 122 Bacillus halodurans species The attempt to solve the SePSK structure by molecular replacement method failed with ribulokinase from Bacillus halodurans (PDB code: 3QDK, 15.7% sequence identity) as an initial model. RESULTS
18 76 single isomorphous replacement anomalous scattering method experimental_method We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
78 83 SIRAS experimental_method We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
116 119 apo protein_state We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
120 125 SePSK protein We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
126 135 structure evidence We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
180 183 apo protein_state We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
184 189 SePSK protein We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
190 199 structure evidence We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
212 239 molecular replacement model experimental_method We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
259 269 structures evidence We therefore used single isomorphous replacement anomalous scattering method (SIRAS) for successful solution of the apo-SePSK structure at a resolution of 2.3 Γ…. Subsequently, the apo-SePSK structure was used as molecular replacement model to solve all other structures identified in this study. RESULTS
4 23 structural analysis experimental_method Our structural analysis showed that apo-SePSK consists of one SePSK protein molecule in an asymmetric unit. RESULTS
36 39 apo protein_state Our structural analysis showed that apo-SePSK consists of one SePSK protein molecule in an asymmetric unit. RESULTS
40 45 SePSK protein Our structural analysis showed that apo-SePSK consists of one SePSK protein molecule in an asymmetric unit. RESULTS
62 67 SePSK protein Our structural analysis showed that apo-SePSK consists of one SePSK protein molecule in an asymmetric unit. RESULTS
41 45 Val2 residue_name_number The amino-acid residues were traced from Val2 to His419, except for the Met1 residue and the seven residues at the C-termini. RESULTS
49 55 His419 residue_name_number The amino-acid residues were traced from Val2 to His419, except for the Met1 residue and the seven residues at the C-termini. RESULTS
72 76 Met1 residue_name_number The amino-acid residues were traced from Val2 to His419, except for the Met1 residue and the seven residues at the C-termini. RESULTS
0 3 Apo protein_state Apo-SePSK contains two domains referred to further on as domain I and domain II (Fig 1A). RESULTS
4 9 SePSK protein Apo-SePSK contains two domains referred to further on as domain I and domain II (Fig 1A). RESULTS
57 65 domain I structure_element Apo-SePSK contains two domains referred to further on as domain I and domain II (Fig 1A). RESULTS
70 79 domain II structure_element Apo-SePSK contains two domains referred to further on as domain I and domain II (Fig 1A). RESULTS
0 8 Domain I structure_element Domain I consists of non-contiguous portions of the polypeptide chains (aa. RESULTS
0 5 2–228 residue_range 2–228 and aa. RESULTS
0 7 402–419 residue_range 402–419), exhibiting 11 Ξ±-helices and 11 Ξ²-sheets. RESULTS
24 33 Ξ±-helices structure_element 402–419), exhibiting 11 Ξ±-helices and 11 Ξ²-sheets. RESULTS
41 49 Ξ²-sheets structure_element 402–419), exhibiting 11 Ξ±-helices and 11 Ξ²-sheets. RESULTS
37 39 Ξ±4 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
40 42 Ξ±5 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
43 46 Ξ±11 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
47 50 Ξ±18 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
52 54 Ξ²3 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
55 57 Ξ²2 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
58 60 Ξ²1 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
61 63 Ξ²6 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
64 67 Ξ²19 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
68 71 Ξ²20 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
72 75 Ξ²17 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
80 83 Ξ±21 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
84 87 Ξ±32 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
123 125 A1 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
127 129 B1 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
134 136 A2 structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
153 164 core region structure_element Among all these structural elements, Ξ±4/Ξ±5/Ξ±11/Ξ±18, Ξ²3/Ξ²2/Ξ²1/Ξ²6/Ξ²19/Ξ²20/Ξ²17 and Ξ±21/Ξ±32 form three patches, referred to as A1, B1 and A2, exhibiting the core region. RESULTS
18 26 Ξ²-sheets structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
28 30 Ξ²7 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
32 35 Ξ²10 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
37 40 Ξ²12 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
45 48 Ξ²16 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
59 68 Ξ±-helices structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
70 72 Ξ±8 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
74 76 Ξ±9 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
78 81 Ξ±13 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
83 86 Ξ±14 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
91 94 Ξ±15 structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
123 134 core region structure_element In addition, four Ξ²-sheets (Ξ²7, Ξ²10, Ξ²12 and Ξ²16) and five Ξ±-helices (Ξ±8, Ξ±9, Ξ±13, Ξ±14 and Ξ±15) flank the left side of the core region. RESULTS
0 9 Domain II structure_element Domain II is comprised of aa. RESULTS
0 7 229–401 residue_range 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
28 30 B2 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
32 35 Ξ²31 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
36 39 Ξ²29 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
40 43 Ξ²22 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
44 47 Ξ²23 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
48 51 Ξ²25 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
52 55 Ξ²24 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
61 63 A3 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
65 68 Ξ±26 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
69 72 Ξ±27 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
73 76 Ξ±28 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
77 80 Ξ±30 structure_element 229–401 and classified into B2 (Ξ²31/Ξ²29/Ξ²22/Ξ²23/Ξ²25/Ξ²24) and A3 (Ξ±26/Ξ±27/Ξ±28/Ξ±30) (Fig 1A and S1 Fig). RESULTS
7 12 SePSK protein In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
13 22 structure evidence In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
24 26 B1 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
31 33 B2 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
52 54 A1 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
56 58 A2 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
63 65 A3 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
81 90 structure evidence In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
101 103 A1 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
104 106 B1 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
107 109 A2 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
110 112 B2 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
113 115 A3 structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
117 118 Ξ± structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
119 120 Ξ² structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
121 122 Ξ± structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
123 124 Ξ² structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
125 126 Ξ± structure_element In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
186 218 FGGY family carbohydrate kinases protein_type In the SePSK structure, B1 and B2 are sandwiched by A1, A2 and A3, and the whole structure shows the A1/B1/A2/B2/A3 (Ξ±/Ξ²/Ξ±/Ξ²/Ξ±) folding pattern, which is in common with other members of FGGY family carbohydrate kinases (S2 Fig). RESULTS
23 28 SePSK protein The overall folding of SePSK resembles a clip, with A2 of domain I acting as a hinge region. RESULTS
52 54 A2 structure_element The overall folding of SePSK resembles a clip, with A2 of domain I acting as a hinge region. RESULTS
58 66 domain I structure_element The overall folding of SePSK resembles a clip, with A2 of domain I acting as a hinge region. RESULTS
79 91 hinge region structure_element The overall folding of SePSK resembles a clip, with A2 of domain I acting as a hinge region. RESULTS
8 18 structures evidence Overall structures of SePSK and AtXK-1. FIG
22 27 SePSK protein Overall structures of SePSK and AtXK-1. FIG
32 38 AtXK-1 protein Overall structures of SePSK and AtXK-1. FIG
22 31 structure evidence (A) Three-dimensional structure of apo-SePSK. FIG
35 38 apo protein_state (A) Three-dimensional structure of apo-SePSK. FIG
39 44 SePSK protein (A) Three-dimensional structure of apo-SePSK. FIG
49 56 Ξ±-helix structure_element The secondary structural elements are indicated (Ξ±-helix: cyan, Ξ²-sheet: yellow). FIG
64 71 Ξ²-sheet structure_element The secondary structural elements are indicated (Ξ±-helix: cyan, Ξ²-sheet: yellow). FIG
22 31 structure evidence (B) Three-dimensional structure of apo-AtXK-1. FIG
35 38 apo protein_state (B) Three-dimensional structure of apo-AtXK-1. FIG
39 45 AtXK-1 protein (B) Three-dimensional structure of apo-AtXK-1. FIG
49 56 Ξ±-helix structure_element The secondary structural elements are indicated (Ξ±-helix: green, Ξ²-sheet: wheat). FIG
65 72 Ξ²-sheet structure_element The secondary structural elements are indicated (Ξ±-helix: green, Ξ²-sheet: wheat). FIG
0 3 Apo protein_state Apo-AtXK-1 exhibits a folding pattern similar to that of SePSK in line with their high sequence identity (Fig 1B and S1 Fig). RESULTS
4 10 AtXK-1 protein Apo-AtXK-1 exhibits a folding pattern similar to that of SePSK in line with their high sequence identity (Fig 1B and S1 Fig). RESULTS
57 62 SePSK protein Apo-AtXK-1 exhibits a folding pattern similar to that of SePSK in line with their high sequence identity (Fig 1B and S1 Fig). RESULTS
9 22 superposition experimental_method However, superposition of structures of AtXK-1 and SePSK shows some differences, especially at the loop regions. RESULTS
26 36 structures evidence However, superposition of structures of AtXK-1 and SePSK shows some differences, especially at the loop regions. RESULTS
40 46 AtXK-1 protein However, superposition of structures of AtXK-1 and SePSK shows some differences, especially at the loop regions. RESULTS
51 56 SePSK protein However, superposition of structures of AtXK-1 and SePSK shows some differences, especially at the loop regions. RESULTS
99 111 loop regions structure_element However, superposition of structures of AtXK-1 and SePSK shows some differences, especially at the loop regions. RESULTS
42 47 loop3 structure_element A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
56 58 Ξ²3 structure_element A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
63 65 Ξ±4 structure_element A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
97 103 AtXK-1 protein A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
104 113 structure evidence A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
128 133 SePSK protein A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
134 143 structure evidence A considerable difference is found in the loop3 linking Ξ²3 and Ξ±4, which is stretched out in the AtXK-1 structure, while in the SePSK structure, it is bent back towards the inner part. RESULTS
45 55 structures evidence The corresponding residues between these two structures (SePSK-Lys35 and AtXK-1-Lys48) have a distance of 15.4 Γ… (S3 Fig). RESULTS
57 62 SePSK protein The corresponding residues between these two structures (SePSK-Lys35 and AtXK-1-Lys48) have a distance of 15.4 Γ… (S3 Fig). RESULTS
63 68 Lys35 residue_name_number The corresponding residues between these two structures (SePSK-Lys35 and AtXK-1-Lys48) have a distance of 15.4 Γ… (S3 Fig). RESULTS
73 79 AtXK-1 protein The corresponding residues between these two structures (SePSK-Lys35 and AtXK-1-Lys48) have a distance of 15.4 Γ… (S3 Fig). RESULTS
80 85 Lys48 residue_name_number The corresponding residues between these two structures (SePSK-Lys35 and AtXK-1-Lys48) have a distance of 15.4 Γ… (S3 Fig). RESULTS
0 15 Activity assays experimental_method Activity assays of SePSK and AtXK-1 RESULTS
19 24 SePSK protein Activity assays of SePSK and AtXK-1 RESULTS
29 35 AtXK-1 protein Activity assays of SePSK and AtXK-1 RESULTS
71 92 structural comparison experimental_method In order to understand the function of these two kinases, we performed structural comparison using Dali server. RESULTS
99 110 Dali server experimental_method In order to understand the function of these two kinases, we performed structural comparison using Dali server. RESULTS
4 14 structures evidence The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
39 44 SePSK protein The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
49 64 xylulose kinase protein_type The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
66 81 glycerol kinase protein_type The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
86 101 ribulose kinase protein_type The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
117 122 SePSK protein The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
127 133 AtXK-1 protein The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
168 175 kinases protein_type The structures most closely related to SePSK are xylulose kinase, glycerol kinase and ribulose kinase, implying that SePSK and AtXK-1 might function similarly to these kinases. RESULTS
47 50 ATP chemical We first tested whether both enzymes possessed ATP hydrolysis activity in the absence of substrates. RESULTS
78 88 absence of protein_state We first tested whether both enzymes possessed ATP hydrolysis activity in the absence of substrates. RESULTS
25 30 SePSK protein As shown in Fig 2A, both SePSK and AtXK-1 exhibited ATP hydrolysis activity. RESULTS
35 41 AtXK-1 protein As shown in Fig 2A, both SePSK and AtXK-1 exhibited ATP hydrolysis activity. RESULTS
52 55 ATP chemical As shown in Fig 2A, both SePSK and AtXK-1 exhibited ATP hydrolysis activity. RESULTS
65 80 xylulose kinase protein_type This finding is in agreement with a previous result showing that xylulose kinase (PDB code: 2ITM) possessed ATP hydrolysis activity without adding substrate. RESULTS
108 111 ATP chemical This finding is in agreement with a previous result showing that xylulose kinase (PDB code: 2ITM) possessed ATP hydrolysis activity without adding substrate. RESULTS
44 49 SePSK protein To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
54 60 AtXK-1 protein To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
104 114 D-ribulose chemical To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
116 126 L-ribulose chemical To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
128 138 D-xylulose chemical To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
140 150 L-xylulose chemical To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
155 163 Glycerol chemical To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
178 203 enzymatic activity assays experimental_method To further identify the actual substrate of SePSK and AtXK-1, five different sugar molecules, including D-ribulose, L-ribulose, D-xylulose, L-xylulose and Glycerol, were used in enzymatic activity assays. RESULTS
24 27 ATP chemical As shown in Fig 2B, the ATP hydrolysis activity of SePSK greatly increased upon adding D-ribulose than adding other potential substrates, suggesting that it has D-ribulose kinase activity. RESULTS
51 56 SePSK protein As shown in Fig 2B, the ATP hydrolysis activity of SePSK greatly increased upon adding D-ribulose than adding other potential substrates, suggesting that it has D-ribulose kinase activity. RESULTS
87 97 D-ribulose chemical As shown in Fig 2B, the ATP hydrolysis activity of SePSK greatly increased upon adding D-ribulose than adding other potential substrates, suggesting that it has D-ribulose kinase activity. RESULTS
161 178 D-ribulose kinase protein_type As shown in Fig 2B, the ATP hydrolysis activity of SePSK greatly increased upon adding D-ribulose than adding other potential substrates, suggesting that it has D-ribulose kinase activity. RESULTS
35 38 ATP chemical In contrary, limited increasing of ATP hydrolysis activity was detected for AtXK-1 upon addition of D-ribulose (Fig 2C), despite its structural similarity with SePSK. RESULTS
76 82 AtXK-1 protein In contrary, limited increasing of ATP hydrolysis activity was detected for AtXK-1 upon addition of D-ribulose (Fig 2C), despite its structural similarity with SePSK. RESULTS
100 110 D-ribulose chemical In contrary, limited increasing of ATP hydrolysis activity was detected for AtXK-1 upon addition of D-ribulose (Fig 2C), despite its structural similarity with SePSK. RESULTS
160 165 SePSK protein In contrary, limited increasing of ATP hydrolysis activity was detected for AtXK-1 upon addition of D-ribulose (Fig 2C), despite its structural similarity with SePSK. RESULTS
4 29 enzymatic activity assays experimental_method The enzymatic activity assays of SePSK and AtXK-1. FIG
33 38 SePSK protein The enzymatic activity assays of SePSK and AtXK-1. FIG
43 49 AtXK-1 protein The enzymatic activity assays of SePSK and AtXK-1. FIG
8 11 ATP chemical (A) The ATP hydrolysis activity of SePSK and AtXK-1. FIG
35 40 SePSK protein (A) The ATP hydrolysis activity of SePSK and AtXK-1. FIG
45 51 AtXK-1 protein (A) The ATP hydrolysis activity of SePSK and AtXK-1. FIG
5 10 SePSK protein Both SePSK and AtXK-1 showed ATP hydrolysis activity in the absence of substrate. FIG
15 21 AtXK-1 protein Both SePSK and AtXK-1 showed ATP hydrolysis activity in the absence of substrate. FIG
29 32 ATP chemical Both SePSK and AtXK-1 showed ATP hydrolysis activity in the absence of substrate. FIG
60 70 absence of protein_state Both SePSK and AtXK-1 showed ATP hydrolysis activity in the absence of substrate. FIG
10 13 ATP chemical While the ATP hydrolysis activity of SePSK greatly increases upon addition of D-ribulose (DR). FIG
37 42 SePSK protein While the ATP hydrolysis activity of SePSK greatly increases upon addition of D-ribulose (DR). FIG
78 88 D-ribulose chemical While the ATP hydrolysis activity of SePSK greatly increases upon addition of D-ribulose (DR). FIG
90 92 DR chemical While the ATP hydrolysis activity of SePSK greatly increases upon addition of D-ribulose (DR). FIG
8 11 ATP chemical (B) The ATP hydrolysis activity of SePSK with addition of five different substrates. FIG
35 40 SePSK protein (B) The ATP hydrolysis activity of SePSK with addition of five different substrates. FIG
19 21 DR chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
23 33 D-ribulose chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
36 38 LR chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
40 50 L-ribulose chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
53 55 DX chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
57 67 D-xylulose chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
70 72 LX chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
74 84 L-xylulose chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
90 93 GLY chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
95 103 Glycerol chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
114 117 ATP chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
141 146 SePSK protein The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
151 157 AtXK-1 protein The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
174 184 D-ribulose chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
194 197 ATP chemical The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
221 230 wild-type protein_state The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
232 234 WT protein_state The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
263 268 SePSK protein The substrates are DR (D-ribulose), LR (L-ribulose), DX (D-xylulose), LX (L-xylulose) and GLY (Glycerol). (C) The ATP hydrolysis activity of SePSK and AtXK-1 with or without D-ribulose. (D) The ATP hydrolysis activity of wild-type (WT) and single-site mutants of SePSK. FIG
29 34 SePSK protein Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
39 42 D8A mutant Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
43 48 SePSK protein Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
50 54 T11A mutant Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
55 60 SePSK protein Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
65 70 D221A mutant Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
71 76 SePSK protein Three single-site mutants of SePSK are D8A-SePSK, T11A-SePSK and D221A-SePSK. FIG
4 7 ATP chemical The ATP hydrolysis activity measured via luminescent ADP-Glo assay (Promega). FIG
41 66 luminescent ADP-Glo assay experimental_method The ATP hydrolysis activity measured via luminescent ADP-Glo assay (Promega). FIG
41 46 SePSK protein To understand the catalytic mechanism of SePSK, we performed structural comparisons among xylulose kinase, glycerol kinase, ribulose kinase and SePSK. RESULTS
61 83 structural comparisons experimental_method To understand the catalytic mechanism of SePSK, we performed structural comparisons among xylulose kinase, glycerol kinase, ribulose kinase and SePSK. RESULTS
90 105 xylulose kinase protein_type To understand the catalytic mechanism of SePSK, we performed structural comparisons among xylulose kinase, glycerol kinase, ribulose kinase and SePSK. RESULTS
107 122 glycerol kinase protein_type To understand the catalytic mechanism of SePSK, we performed structural comparisons among xylulose kinase, glycerol kinase, ribulose kinase and SePSK. RESULTS
124 139 ribulose kinase protein_type To understand the catalytic mechanism of SePSK, we performed structural comparisons among xylulose kinase, glycerol kinase, ribulose kinase and SePSK. RESULTS
144 149 SePSK protein To understand the catalytic mechanism of SePSK, we performed structural comparisons among xylulose kinase, glycerol kinase, ribulose kinase and SePSK. RESULTS
53 55 D8 residue_name_number Our results suggested that three conserved residues (D8, T11 and D221 of SePSK) play an important role in SePSK function. RESULTS
57 60 T11 residue_name_number Our results suggested that three conserved residues (D8, T11 and D221 of SePSK) play an important role in SePSK function. RESULTS
65 69 D221 residue_name_number Our results suggested that three conserved residues (D8, T11 and D221 of SePSK) play an important role in SePSK function. RESULTS
73 78 SePSK protein Our results suggested that three conserved residues (D8, T11 and D221 of SePSK) play an important role in SePSK function. RESULTS
106 111 SePSK protein Our results suggested that three conserved residues (D8, T11 and D221 of SePSK) play an important role in SePSK function. RESULTS
0 9 Mutations experimental_method Mutations of the corresponding residue in xylulose kinase and glycerol kinase from Escherichia coli greatly reduced their activity. RESULTS
42 57 xylulose kinase protein_type Mutations of the corresponding residue in xylulose kinase and glycerol kinase from Escherichia coli greatly reduced their activity. RESULTS
62 77 glycerol kinase protein_type Mutations of the corresponding residue in xylulose kinase and glycerol kinase from Escherichia coli greatly reduced their activity. RESULTS
83 99 Escherichia coli species Mutations of the corresponding residue in xylulose kinase and glycerol kinase from Escherichia coli greatly reduced their activity. RESULTS
52 57 SePSK protein To identify the function of these three residues of SePSK, we constructed D8A, T11A and D221A mutants. RESULTS
74 77 D8A mutant To identify the function of these three residues of SePSK, we constructed D8A, T11A and D221A mutants. RESULTS
79 83 T11A mutant To identify the function of these three residues of SePSK, we constructed D8A, T11A and D221A mutants. RESULTS
88 93 D221A mutant To identify the function of these three residues of SePSK, we constructed D8A, T11A and D221A mutants. RESULTS
94 101 mutants protein_state To identify the function of these three residues of SePSK, we constructed D8A, T11A and D221A mutants. RESULTS
6 31 enzymatic activity assays experimental_method Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
99 102 ATP chemical Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
127 137 D-ribulose chemical Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
151 160 wild type protein_state Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
256 271 phosphorylation ptm Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
272 282 D-ribulose chemical Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
317 322 SePSK protein Using enzymatic activity assays, we found that all of these mutants exhibit much lower activity of ATP hydrolysis after adding D-ribulose than that of wild type, indicating the possibility that these three residues are involved in the catalytic process of phosphorylation D-ribulose and are vital for the function of SePSK (Fig 2D). RESULTS
0 5 SePSK protein SePSK and AtXK-1 possess a similar ATP binding site RESULTS
10 16 AtXK-1 protein SePSK and AtXK-1 possess a similar ATP binding site RESULTS
35 51 ATP binding site site SePSK and AtXK-1 possess a similar ATP binding site RESULTS
39 44 SePSK protein To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
49 55 AtXK-1 protein To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
56 71 in complex with protein_state To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
72 75 ATP chemical To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
80 86 soaked experimental_method To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
91 94 apo protein_state To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
95 103 crystals evidence To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
137 140 ATP chemical To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
159 169 structures evidence To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
173 178 SePSK protein To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
183 189 AtXK-1 protein To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
190 200 bound with protein_state To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
201 204 ATP chemical To obtain more detailed information of SePSK and AtXK-1 in complex with ATP, we soaked the apo-crystals in the reservoir adding cofactor ATP, and obtained the structures of SePSK and AtXK-1 bound with ATP at the resolution of 2.3 Γ… and 1.8 Γ…, respectively. RESULTS
8 18 structures evidence In both structures, a strong electron density was found in the conserved ATP binding pocket, but can only be fitted with an ADP molecule (S4 Fig). RESULTS
29 45 electron density evidence In both structures, a strong electron density was found in the conserved ATP binding pocket, but can only be fitted with an ADP molecule (S4 Fig). RESULTS
63 72 conserved protein_state In both structures, a strong electron density was found in the conserved ATP binding pocket, but can only be fitted with an ADP molecule (S4 Fig). RESULTS
73 91 ATP binding pocket site In both structures, a strong electron density was found in the conserved ATP binding pocket, but can only be fitted with an ADP molecule (S4 Fig). RESULTS
124 127 ADP chemical In both structures, a strong electron density was found in the conserved ATP binding pocket, but can only be fitted with an ADP molecule (S4 Fig). RESULTS
13 23 structures evidence Thus the two structures were named ADP-SePSK and ADP-AtXK-1, respectively. RESULTS
35 44 ADP-SePSK complex_assembly Thus the two structures were named ADP-SePSK and ADP-AtXK-1, respectively. RESULTS
49 59 ADP-AtXK-1 complex_assembly Thus the two structures were named ADP-SePSK and ADP-AtXK-1, respectively. RESULTS
19 37 electron densities evidence The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
47 56 phosphate chemical The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
65 75 structures evidence The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
95 104 phosphate chemical The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
114 117 ATP chemical The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
154 159 SePSK protein The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
164 170 AtXK-1 protein The extremely weak electron densities of ATP Ξ³-phosphate in both structures suggest that the Ξ³-phosphate group of ATP is either flexible or hydrolyzed by SePSK and AtXK-1. RESULTS
36 61 enzymatic activity assays experimental_method This result was consistent with our enzymatic activity assays where SePSK and AtXK-1 showed ATP hydrolysis activity without adding any substrates (Fig 2A and 2C). RESULTS
68 73 SePSK protein This result was consistent with our enzymatic activity assays where SePSK and AtXK-1 showed ATP hydrolysis activity without adding any substrates (Fig 2A and 2C). RESULTS
78 84 AtXK-1 protein This result was consistent with our enzymatic activity assays where SePSK and AtXK-1 showed ATP hydrolysis activity without adding any substrates (Fig 2A and 2C). RESULTS
92 95 ATP chemical This result was consistent with our enzymatic activity assays where SePSK and AtXK-1 showed ATP hydrolysis activity without adding any substrates (Fig 2A and 2C). RESULTS
23 26 ATP chemical To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
31 37 soaked experimental_method To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
42 50 crystals evidence To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
54 57 apo protein_state To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
58 63 SePSK protein To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
68 71 apo protein_state To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
72 78 AtXK-1 protein To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
105 112 AMP-PNP chemical To avoid hydrolysis of ATP, we soaked the crystals of apo-SePSK and apo-AtXK-1 into the reservoir adding AMP-PNP. RESULTS
27 45 electron densities evidence However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
51 60 phosphate chemical However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
70 77 AMP-PNP chemical However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
79 86 AMP-PNP chemical However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
89 98 phosphate chemical However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
122 135 AMP-PNP-SePSK complex_assembly However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
140 154 AMP-PNP-AtXK-1 complex_assembly However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
155 165 structures evidence However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
198 201 ATP chemical However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
204 213 phosphate chemical However, we found that the electron densities of Ξ³-phosphate group of AMP-PNP (AMP-PNP Ξ³-phosphate) are still weak in the AMP-PNP-SePSK and AMP-PNP-AtXK-1 structures, suggesting high flexibility of ATP-Ξ³-phosphate. RESULTS
6 15 phosphate chemical The Ξ³-phosphate group of ATP is transferred to the sugar substrate during the reaction process, so this flexibility might be important for the ability of these kinases. RESULTS
25 28 ATP chemical The Ξ³-phosphate group of ATP is transferred to the sugar substrate during the reaction process, so this flexibility might be important for the ability of these kinases. RESULTS
51 56 sugar chemical The Ξ³-phosphate group of ATP is transferred to the sugar substrate during the reaction process, so this flexibility might be important for the ability of these kinases. RESULTS
160 167 kinases protein_type The Ξ³-phosphate group of ATP is transferred to the sugar substrate during the reaction process, so this flexibility might be important for the ability of these kinases. RESULTS
12 22 structures evidence The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
60 63 ADP chemical The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
68 75 AMP-PNP chemical The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
83 97 AMP-PNP-AtXK-1 complex_assembly The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
99 109 ADP-AtXK-1 complex_assembly The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
111 120 ADP-SePSK complex_assembly The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
125 138 AMP-PNP-SePSK complex_assembly The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
139 149 structures evidence The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
195 204 structure evidence The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
208 221 AMP-PNP-SePSK complex_assembly The overall structures as well as the coordination modes of ADP and AMP-PNP in the AMP-PNP-AtXK-1, ADP-AtXK-1, ADP-SePSK and AMP-PNP-SePSK structures are nearly identical (S5 Fig), therefore the structure of AMP-PNP-SePSK is used here to describe the structural details and to compare with those of other family members. RESULTS
24 29 SePSK protein As shown in Fig 3A, one SePSK protein molecule is in an asymmetric unit with one AMP-PNP molecule. RESULTS
81 88 AMP-PNP chemical As shown in Fig 3A, one SePSK protein molecule is in an asymmetric unit with one AMP-PNP molecule. RESULTS
4 11 AMP-PNP chemical The AMP-PNP is bound at the domain II, where it fits well inside a positively charged groove. RESULTS
28 37 domain II structure_element The AMP-PNP is bound at the domain II, where it fits well inside a positively charged groove. RESULTS
67 92 positively charged groove site The AMP-PNP is bound at the domain II, where it fits well inside a positively charged groove. RESULTS
4 26 AMP-PNP binding pocket site The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
39 53 four Ξ±-helices structure_element The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
55 58 Ξ±26 structure_element The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
60 63 Ξ±28 structure_element The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
65 68 Ξ±27 structure_element The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
73 76 Ξ±30 structure_element The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
90 118 shape resembling a half-fist protein_state The AMP-PNP binding pocket consists of four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) and forms a shape resembling a half-fist (Fig 3A and 3B). RESULTS
22 29 AMP-PNP chemical The head group of the AMP-PNP is embedded in a pocket surrounded by Trp383, Asn380, Gly376 and Gly377. RESULTS
47 53 pocket site The head group of the AMP-PNP is embedded in a pocket surrounded by Trp383, Asn380, Gly376 and Gly377. RESULTS
68 74 Trp383 residue_name_number The head group of the AMP-PNP is embedded in a pocket surrounded by Trp383, Asn380, Gly376 and Gly377. RESULTS
76 82 Asn380 residue_name_number The head group of the AMP-PNP is embedded in a pocket surrounded by Trp383, Asn380, Gly376 and Gly377. RESULTS
84 90 Gly376 residue_name_number The head group of the AMP-PNP is embedded in a pocket surrounded by Trp383, Asn380, Gly376 and Gly377. RESULTS
95 101 Gly377 residue_name_number The head group of the AMP-PNP is embedded in a pocket surrounded by Trp383, Asn380, Gly376 and Gly377. RESULTS
19 26 AMP-PNP chemical The purine ring of AMP-PNP is positioned in parallel to the indole ring of Trp383. RESULTS
75 81 Trp383 residue_name_number The purine ring of AMP-PNP is positioned in parallel to the indole ring of Trp383. RESULTS
64 70 Asn380 residue_name_number In addition, it is hydrogen-bonded with the side chain amide of Asn380 (Fig 3B). RESULTS
12 19 AMP-PNP chemical The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
34 46 hinge region structure_element The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
50 55 SePSK protein The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
67 76 phosphate chemical The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
83 92 phosphate chemical The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
118 124 Gly376 residue_name_number The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
129 135 Ser243 residue_name_number The tail of AMP-PNP points to the hinge region of SePSK, and its Ξ±-phosphate and Ξ²-phosphate groups are stabilized by Gly376 and Ser243, respectively. RESULTS
15 24 structure evidence Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
48 55 AMP-PNP chemical Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
58 67 phosphate chemical Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
91 109 ATP binding pocket site Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
122 131 phosphate chemical Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
168 176 domain I structure_element Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
181 190 domain II structure_element Together, this structure clearly shows that the AMP-PNP-Ξ²-phosphate is sticking out of the ATP binding pocket, thus the Ξ³-phosphate group is at the empty space between domain I and domain II and is unconstrained in its movement by the protein. RESULTS
0 9 Structure evidence Structure of SePSK in complex with AMP-PNP. FIG
13 18 SePSK protein Structure of SePSK in complex with AMP-PNP. FIG
19 34 in complex with protein_state Structure of SePSK in complex with AMP-PNP. FIG
35 42 AMP-PNP chemical Structure of SePSK in complex with AMP-PNP. FIG
8 24 electron density evidence (A) The electron density of AMP-PNP. FIG
28 35 AMP-PNP chemical (A) The electron density of AMP-PNP. FIG
4 9 SePSK protein The SePSK structure is shown in the electrostatic potential surface mode. FIG
10 19 structure evidence The SePSK structure is shown in the electrostatic potential surface mode. FIG
4 11 AMP-PNP chemical The AMP-PNP is depicted as sticks with its Η€FoΗ€-Η€FcΗ€ map contoured at 3 Οƒ shown as cyan mesh. FIG
43 56 Η€FoΗ€-Η€FcΗ€ map evidence The AMP-PNP is depicted as sticks with its Η€FoΗ€-Η€FcΗ€ map contoured at 3 Οƒ shown as cyan mesh. FIG
8 30 AMP-PNP binding pocket site (B) The AMP-PNP binding pocket. FIG
12 19 AMP-PNP chemical The head of AMP-PNP is sandwiched by four residues (Leu293, Gly376, Gly377 and Trp383). FIG
52 58 Leu293 residue_name_number The head of AMP-PNP is sandwiched by four residues (Leu293, Gly376, Gly377 and Trp383). FIG
60 66 Gly376 residue_name_number The head of AMP-PNP is sandwiched by four residues (Leu293, Gly376, Gly377 and Trp383). FIG
68 74 Gly377 residue_name_number The head of AMP-PNP is sandwiched by four residues (Leu293, Gly376, Gly377 and Trp383). FIG
79 85 Trp383 residue_name_number The head of AMP-PNP is sandwiched by four residues (Leu293, Gly376, Gly377 and Trp383). FIG
9 18 Ξ±-helices structure_element The four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) are labeled in red. FIG
20 23 Ξ±26 structure_element The four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) are labeled in red. FIG
25 28 Ξ±28 structure_element The four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) are labeled in red. FIG
30 33 Ξ±27 structure_element The four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) are labeled in red. FIG
38 41 Ξ±30 structure_element The four Ξ±-helices (Ξ±26, Ξ±28, Ξ±27 and Ξ±30) are labeled in red. FIG
4 11 AMP-PNP chemical The AMP-PNP and coordinated residues are shown as sticks. FIG
14 36 substrate binding site site The potential substrate binding site in SePSK RESULTS
40 45 SePSK protein The potential substrate binding site in SePSK RESULTS
21 36 activity assays experimental_method The results from our activity assays suggested that SePSK has D-ribulose kinase activity. RESULTS
52 57 SePSK protein The results from our activity assays suggested that SePSK has D-ribulose kinase activity. RESULTS
62 79 D-ribulose kinase protein_type The results from our activity assays suggested that SePSK has D-ribulose kinase activity. RESULTS
53 58 SePSK protein To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
63 73 D-ribulose chemical To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
79 82 apo protein_state To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
83 88 SePSK protein To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
89 114 crystals were soaked into experimental_method To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
119 128 reservoir experimental_method To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
140 150 D-ribulose chemical To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
152 155 RBL chemical To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
165 174 RBL-SePSK complex_assembly To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
175 184 structure evidence To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
189 195 solved experimental_method To better understand the interaction pattern between SePSK and D-ribulose, the apo-SePSK crystals were soaked into the reservoir with 10 mM D-ribulose (RBL) and the RBL-SePSK structure was solved. RESULTS
33 51 electron densities evidence As shown in S6 Fig, two residual electron densities are visible in domain I, which can be interpreted as two D-ribulose molecules with reasonable fit. RESULTS
67 75 domain I structure_element As shown in S6 Fig, two residual electron densities are visible in domain I, which can be interpreted as two D-ribulose molecules with reasonable fit. RESULTS
109 119 D-ribulose chemical As shown in S6 Fig, two residual electron densities are visible in domain I, which can be interpreted as two D-ribulose molecules with reasonable fit. RESULTS
76 86 D-ribulose chemical As shown in Fig 4A, the nearest distance between the carbon skeleton of two D-ribulose molecules are approx. RESULTS
7 11 RBL1 residue_name_number 7.1 Γ… (RBL1-C4 and RBL2-C1). RESULTS
19 23 RBL2 residue_name_number 7.1 Γ… (RBL1-C4 and RBL2-C1). RESULTS
0 4 RBL1 residue_name_number RBL1 is located in the pocket consisting of Ξ±21 and the loop between Ξ²6 and Ξ²7. RESULTS
23 29 pocket site RBL1 is located in the pocket consisting of Ξ±21 and the loop between Ξ²6 and Ξ²7. RESULTS
44 47 Ξ±21 structure_element RBL1 is located in the pocket consisting of Ξ±21 and the loop between Ξ²6 and Ξ²7. RESULTS
56 60 loop structure_element RBL1 is located in the pocket consisting of Ξ±21 and the loop between Ξ²6 and Ξ²7. RESULTS
69 78 Ξ²6 and Ξ²7 structure_element RBL1 is located in the pocket consisting of Ξ±21 and the loop between Ξ²6 and Ξ²7. RESULTS
17 21 RBL1 residue_name_number The O4 and O5 of RBL1 are coordinated with the side chain carboxyl group of Asp221. RESULTS
76 82 Asp221 residue_name_number The O4 and O5 of RBL1 are coordinated with the side chain carboxyl group of Asp221. RESULTS
23 27 RBL1 residue_name_number Furthermore, the O2 of RBL1 interacts with the main chain amide nitrogen of Ser72 (Fig 4B). RESULTS
76 81 Ser72 residue_name_number Furthermore, the O2 of RBL1 interacts with the main chain amide nitrogen of Ser72 (Fig 4B). RESULTS
5 11 pocket site This pocket is at a similar position of substrate binding site of other sugar kinase, such as L-ribulokinase (PDB code: 3QDK) (S7 Fig). RESULTS
40 62 substrate binding site site This pocket is at a similar position of substrate binding site of other sugar kinase, such as L-ribulokinase (PDB code: 3QDK) (S7 Fig). RESULTS
72 84 sugar kinase protein_type This pocket is at a similar position of substrate binding site of other sugar kinase, such as L-ribulokinase (PDB code: 3QDK) (S7 Fig). RESULTS
94 108 L-ribulokinase protein This pocket is at a similar position of substrate binding site of other sugar kinase, such as L-ribulokinase (PDB code: 3QDK) (S7 Fig). RESULTS
9 30 structural comparison experimental_method However, structural comparison shows that the substrate ligating residues between the two structures are not strictly conserved. RESULTS
90 100 structures evidence However, structural comparison shows that the substrate ligating residues between the two structures are not strictly conserved. RESULTS
105 127 not strictly conserved protein_state However, structural comparison shows that the substrate ligating residues between the two structures are not strictly conserved. RESULTS
13 23 structures evidence Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
50 54 RBL1 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
58 67 RBL-SePSK complex_assembly Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
68 77 structure evidence Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
82 87 Ser72 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
89 95 Asp221 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
100 106 Ser222 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
140 150 L-ribulose chemical Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
156 170 L-ribulokinase protein Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
175 180 Ala96 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
182 188 Lys208 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
190 196 Asp274 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
201 207 Glu329 residue_name_number Based on the structures, the ligating residues of RBL1 in RBL-SePSK structure are Ser72, Asp221 and Ser222, and the interacting residues of L-ribulose with L-ribulokinase are Ala96, Lys208, Asp274 and Glu329 (S7 Fig). RESULTS
0 6 Glu329 residue_name_number Glu329 in 3QDK has no counterpart in RBL-SePSK structure. RESULTS
37 46 RBL-SePSK complex_assembly Glu329 in 3QDK has no counterpart in RBL-SePSK structure. RESULTS
47 56 structure evidence Glu329 in 3QDK has no counterpart in RBL-SePSK structure. RESULTS
22 28 Lys208 residue_name_number In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
32 46 L-ribulokinase protein In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
78 84 Lys163 residue_name_number In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
89 98 RBL-SePSK complex_assembly In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
99 108 structure evidence In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
131 137 Lys163 residue_name_number In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
192 201 Ξ±-helices structure_element In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
203 205 Ξ±9 structure_element In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
210 213 Ξ±13 structure_element In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
218 223 SePSK protein In addition, although Lys208 of L-ribulokinase has the corresponding residue (Lys163) in RBL-SePSK structure, the hydrogen bond of Lys163 is broken because of the conformational change of two Ξ±-helices (Ξ±9 and Ξ±13) of SePSK. RESULTS
15 25 D-ribulose chemical The binding of D-ribulose (RBL) with SePSK. FIG
27 30 RBL chemical The binding of D-ribulose (RBL) with SePSK. FIG
37 42 SePSK protein The binding of D-ribulose (RBL) with SePSK. FIG
8 43 electrostatic potential surface map evidence (A) The electrostatic potential surface map of RBL-SePSK and a zoom-in view of RBL binding site. FIG
47 56 RBL-SePSK complex_assembly (A) The electrostatic potential surface map of RBL-SePSK and a zoom-in view of RBL binding site. FIG
79 95 RBL binding site site (A) The electrostatic potential surface map of RBL-SePSK and a zoom-in view of RBL binding site. FIG
4 8 RBL1 residue_name_number The RBL1 and RBL2 are depicted as sticks. (B) Interaction of two D-ribulose molecules (RBL1 and RBL2) with SePSK. FIG
13 17 RBL2 residue_name_number The RBL1 and RBL2 are depicted as sticks. (B) Interaction of two D-ribulose molecules (RBL1 and RBL2) with SePSK. FIG
65 75 D-ribulose chemical The RBL1 and RBL2 are depicted as sticks. (B) Interaction of two D-ribulose molecules (RBL1 and RBL2) with SePSK. FIG
87 91 RBL1 residue_name_number The RBL1 and RBL2 are depicted as sticks. (B) Interaction of two D-ribulose molecules (RBL1 and RBL2) with SePSK. FIG
96 100 RBL2 residue_name_number The RBL1 and RBL2 are depicted as sticks. (B) Interaction of two D-ribulose molecules (RBL1 and RBL2) with SePSK. FIG
107 112 SePSK protein The RBL1 and RBL2 are depicted as sticks. (B) Interaction of two D-ribulose molecules (RBL1 and RBL2) with SePSK. FIG
4 7 RBL chemical The RBL molecules (carbon atoms colored yellow) and amino acid residues of SePSK (carbon atoms colored green) involved in RBL interaction are shown as sticks. FIG
75 80 SePSK protein The RBL molecules (carbon atoms colored yellow) and amino acid residues of SePSK (carbon atoms colored green) involved in RBL interaction are shown as sticks. FIG
122 125 RBL chemical The RBL molecules (carbon atoms colored yellow) and amino acid residues of SePSK (carbon atoms colored green) involved in RBL interaction are shown as sticks. FIG
128 151 binding affinity assays experimental_method The hydrogen bonds are indicated by the black dashed lines and the numbers near the dashed lines are the distances (Γ…). (C) The binding affinity assays of SePSK with D-ribulose. FIG
155 160 SePSK protein The hydrogen bonds are indicated by the black dashed lines and the numbers near the dashed lines are the distances (Γ…). (C) The binding affinity assays of SePSK with D-ribulose. FIG
166 176 D-ribulose chemical The hydrogen bonds are indicated by the black dashed lines and the numbers near the dashed lines are the distances (Γ…). (C) The binding affinity assays of SePSK with D-ribulose. FIG
0 25 Single-cycle kinetic data experimental_method Single-cycle kinetic data are reflecting the interaction of SePSK and D8A-SePSK with D-ribulose. FIG
60 65 SePSK protein Single-cycle kinetic data are reflecting the interaction of SePSK and D8A-SePSK with D-ribulose. FIG
70 73 D8A mutant Single-cycle kinetic data are reflecting the interaction of SePSK and D8A-SePSK with D-ribulose. FIG
74 79 SePSK protein Single-cycle kinetic data are reflecting the interaction of SePSK and D8A-SePSK with D-ribulose. FIG
85 95 D-ribulose chemical Single-cycle kinetic data are reflecting the interaction of SePSK and D8A-SePSK with D-ribulose. FIG
26 37 sensorgrams evidence It shows two experimental sensorgrams after minus the empty sensorgrams. FIG
60 71 sensorgrams evidence It shows two experimental sensorgrams after minus the empty sensorgrams. FIG
92 101 wild type protein_state The original data is shown as black curve, and the fitted data is shown as different color (wild type SePSK: red curve, D8A-SePSK: green curve). FIG
102 107 SePSK protein The original data is shown as black curve, and the fitted data is shown as different color (wild type SePSK: red curve, D8A-SePSK: green curve). FIG
120 123 D8A mutant The original data is shown as black curve, and the fitted data is shown as different color (wild type SePSK: red curve, D8A-SePSK: green curve). FIG
124 129 SePSK protein The original data is shown as black curve, and the fitted data is shown as different color (wild type SePSK: red curve, D8A-SePSK: green curve). FIG
0 26 Dissociation rate constant evidence Dissociation rate constant of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. FIG
30 39 wild type protein_state Dissociation rate constant of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. FIG
44 47 D8A mutant Dissociation rate constant of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. FIG
48 53 SePSK protein Dissociation rate constant of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. FIG
4 18 binding pocket site The binding pocket of RBL2 with relatively weak electron density is near the N-terminal region of SePSK and is negatively charged. RESULTS
22 26 RBL2 residue_name_number The binding pocket of RBL2 with relatively weak electron density is near the N-terminal region of SePSK and is negatively charged. RESULTS
48 64 electron density evidence The binding pocket of RBL2 with relatively weak electron density is near the N-terminal region of SePSK and is negatively charged. RESULTS
98 103 SePSK protein The binding pocket of RBL2 with relatively weak electron density is near the N-terminal region of SePSK and is negatively charged. RESULTS
18 22 Asp8 residue_name_number The side chain of Asp8 interacts strongly with O3 and O4 of RBL2. RESULTS
60 64 RBL2 residue_name_number The side chain of Asp8 interacts strongly with O3 and O4 of RBL2. RESULTS
22 27 Ser12 residue_name_number The hydroxyl group of Ser12 coordinates with O2 of RBL2. RESULTS
51 55 RBL2 residue_name_number The hydroxyl group of Ser12 coordinates with O2 of RBL2. RESULTS
32 37 Gly13 residue_name_number The backbone amide nitrogens of Gly13 and Arg15 also keep hydrogen bonds with RBL2 (Fig 4B). RESULTS
42 47 Arg15 residue_name_number The backbone amide nitrogens of Gly13 and Arg15 also keep hydrogen bonds with RBL2 (Fig 4B). RESULTS
78 82 RBL2 residue_name_number The backbone amide nitrogens of Gly13 and Arg15 also keep hydrogen bonds with RBL2 (Fig 4B). RESULTS
0 21 Structural comparison experimental_method Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
25 30 SePSK protein Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
35 41 AtXK-1 protein Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
64 83 RBL1 binding pocket site Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
87 96 conserved protein_state Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
102 113 RBL2 pocket site Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
130 136 AtXK-1 protein Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
137 146 structure evidence Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
200 204 RBL2 residue_name_number Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
209 225 highly conserved protein_state Structural comparison of SePSK and AtXK-1 showed that while the RBL1 binding pocket is conserved, the RBL2 pocket is disrupted in AtXK-1 structure, despite the fact that the residues interacting with RBL2 are highly conserved between the two proteins. RESULTS
7 16 RBL-SePSK complex_assembly In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
17 26 structure evidence In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
69 73 RBL2 residue_name_number In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
78 83 Ser12 residue_name_number In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
107 113 AtXK-1 protein In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
114 123 structure evidence In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
175 180 Ser22 residue_name_number In the RBL-SePSK structure, a 2.6 Γ… hydrogen bond is present between RBL2 and Ser12 (Fig 4B), while in the AtXK-1 structure this hydrogen bond with the corresponding residue (Ser22) is broken. RESULTS
71 79 Ξ²-sheets structure_element This break is probably induced by the conformational change of the two Ξ²-sheets (Ξ²1 and Ξ²2), with the result that the linking loop (loop 1) is located further away from the RBL2 binding site. RESULTS
81 83 Ξ²1 structure_element This break is probably induced by the conformational change of the two Ξ²-sheets (Ξ²1 and Ξ²2), with the result that the linking loop (loop 1) is located further away from the RBL2 binding site. RESULTS
88 90 Ξ²2 structure_element This break is probably induced by the conformational change of the two Ξ²-sheets (Ξ²1 and Ξ²2), with the result that the linking loop (loop 1) is located further away from the RBL2 binding site. RESULTS
118 130 linking loop structure_element This break is probably induced by the conformational change of the two Ξ²-sheets (Ξ²1 and Ξ²2), with the result that the linking loop (loop 1) is located further away from the RBL2 binding site. RESULTS
132 138 loop 1 structure_element This break is probably induced by the conformational change of the two Ξ²-sheets (Ξ²1 and Ξ²2), with the result that the linking loop (loop 1) is located further away from the RBL2 binding site. RESULTS
173 190 RBL2 binding site site This break is probably induced by the conformational change of the two Ξ²-sheets (Ξ²1 and Ξ²2), with the result that the linking loop (loop 1) is located further away from the RBL2 binding site. RESULTS
37 43 AtXK-1 protein This change might be the reason that AtXK-1 only shows limited increasing in its ATP hydrolysis ability upon adding D-ribulose as a substrate after comparing with SePSK (Fig 2C). RESULTS
81 84 ATP chemical This change might be the reason that AtXK-1 only shows limited increasing in its ATP hydrolysis ability upon adding D-ribulose as a substrate after comparing with SePSK (Fig 2C). RESULTS
116 126 D-ribulose chemical This change might be the reason that AtXK-1 only shows limited increasing in its ATP hydrolysis ability upon adding D-ribulose as a substrate after comparing with SePSK (Fig 2C). RESULTS
163 168 SePSK protein This change might be the reason that AtXK-1 only shows limited increasing in its ATP hydrolysis ability upon adding D-ribulose as a substrate after comparing with SePSK (Fig 2C). RESULTS
4 9 SePSK protein Our SePSK structure shows that the Asp8 residue forms strong hydrogen bond with RBL2 (Fig 4B). RESULTS
10 19 structure evidence Our SePSK structure shows that the Asp8 residue forms strong hydrogen bond with RBL2 (Fig 4B). RESULTS
35 39 Asp8 residue_name_number Our SePSK structure shows that the Asp8 residue forms strong hydrogen bond with RBL2 (Fig 4B). RESULTS
80 84 RBL2 residue_name_number Our SePSK structure shows that the Asp8 residue forms strong hydrogen bond with RBL2 (Fig 4B). RESULTS
17 33 enzymatic assays experimental_method In addition, our enzymatic assays indicated that Asp8 is important for the activity of SePSK (Fig 2D). RESULTS
49 53 Asp8 residue_name_number In addition, our enzymatic assays indicated that Asp8 is important for the activity of SePSK (Fig 2D). RESULTS
87 92 SePSK protein In addition, our enzymatic assays indicated that Asp8 is important for the activity of SePSK (Fig 2D). RESULTS
49 65 binding affinity evidence To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
70 80 D-ribulose chemical To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
89 98 wild type protein_state To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
100 102 WT protein_state To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
108 111 D8A mutant To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
112 118 mutant protein_state To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
122 127 SePSK protein To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
136 168 surface plasmon resonance method experimental_method To further verified this result, we measured the binding affinity for D-ribulose of both wild type (WT) and D8A mutant of SePSK using a surface plasmon resonance method. RESULTS
28 36 affinity evidence The results showed that the affinity of D8A-SePSK with D-ribulose is weaker than that of WT with a reduction of approx. RESULTS
40 43 D8A mutant The results showed that the affinity of D8A-SePSK with D-ribulose is weaker than that of WT with a reduction of approx. RESULTS
44 49 SePSK protein The results showed that the affinity of D8A-SePSK with D-ribulose is weaker than that of WT with a reduction of approx. RESULTS
55 65 D-ribulose chemical The results showed that the affinity of D8A-SePSK with D-ribulose is weaker than that of WT with a reduction of approx. RESULTS
89 91 WT protein_state The results showed that the affinity of D8A-SePSK with D-ribulose is weaker than that of WT with a reduction of approx. RESULTS
0 26 Dissociation rate constant evidence Dissociation rate constant (Kd) of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. RESULTS
28 30 Kd evidence Dissociation rate constant (Kd) of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. RESULTS
35 44 wild type protein_state Dissociation rate constant (Kd) of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. RESULTS
49 52 D8A mutant Dissociation rate constant (Kd) of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. RESULTS
53 58 SePSK protein Dissociation rate constant (Kd) of wild type and D8A-SePSK are 3 ms-1 and 9 ms-1, respectively. RESULTS
29 52 second RBL binding site site The results implied that the second RBL binding site plays a role in the D-ribulose kinase function of SePSK. RESULTS
73 90 D-ribulose kinase protein_type The results implied that the second RBL binding site plays a role in the D-ribulose kinase function of SePSK. RESULTS
103 108 SePSK protein The results implied that the second RBL binding site plays a role in the D-ribulose kinase function of SePSK. RESULTS
47 57 D-ribulose chemical However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
67 82 crystal soaking experimental_method However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
115 131 electron density evidence However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
135 139 RBL2 residue_name_number However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
170 189 second binding site site However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
193 203 D-ribulose chemical However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
207 212 SePSK protein However, considering the high concentration of D-ribulose used for crystal soaking, as well as the relatively weak electron density of RBL2, it is also possible that the second binding site of D-ribulose in SePSK is an artifact. RESULTS
35 40 SePSK protein Simulated conformational change of SePSK during the catalytic process RESULTS
60 68 domain I structure_element It was reported earlier that the crossing angle between the domain I and domain II in FGGY family carbohydrate kinases is different. RESULTS
73 82 domain II structure_element It was reported earlier that the crossing angle between the domain I and domain II in FGGY family carbohydrate kinases is different. RESULTS
86 118 FGGY family carbohydrate kinases protein_type It was reported earlier that the crossing angle between the domain I and domain II in FGGY family carbohydrate kinases is different. RESULTS
79 82 ATP chemical In addition, this difference may be caused by the binding of substrates and/or ATP. RESULTS
39 51 sugar kinase protein_type As reported previously, members of the sugar kinase family undergo a conformational change to narrow the crossing angle between two domains and reduce the distance between substrate and ATP in order to facilitate the catalytic reaction of phosphorylation of sugar substrates. RESULTS
186 189 ATP chemical As reported previously, members of the sugar kinase family undergo a conformational change to narrow the crossing angle between two domains and reduce the distance between substrate and ATP in order to facilitate the catalytic reaction of phosphorylation of sugar substrates. RESULTS
239 254 phosphorylation ptm As reported previously, members of the sugar kinase family undergo a conformational change to narrow the crossing angle between two domains and reduce the distance between substrate and ATP in order to facilitate the catalytic reaction of phosphorylation of sugar substrates. RESULTS
16 26 structures evidence After comparing structures of apo-SePSK, RBL-SePSK and AMP-PNP-SePSK, we noticed that these structures presented here are similar. RESULTS
30 33 apo protein_state After comparing structures of apo-SePSK, RBL-SePSK and AMP-PNP-SePSK, we noticed that these structures presented here are similar. RESULTS
34 39 SePSK protein After comparing structures of apo-SePSK, RBL-SePSK and AMP-PNP-SePSK, we noticed that these structures presented here are similar. RESULTS
41 50 RBL-SePSK complex_assembly After comparing structures of apo-SePSK, RBL-SePSK and AMP-PNP-SePSK, we noticed that these structures presented here are similar. RESULTS
55 68 AMP-PNP-SePSK complex_assembly After comparing structures of apo-SePSK, RBL-SePSK and AMP-PNP-SePSK, we noticed that these structures presented here are similar. RESULTS
92 102 structures evidence After comparing structures of apo-SePSK, RBL-SePSK and AMP-PNP-SePSK, we noticed that these structures presented here are similar. RESULTS
0 11 Superposing experimental_method Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
16 26 structures evidence Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
30 39 RBL-SePSK complex_assembly Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
44 57 AMP-PNP-SePSK complex_assembly Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
110 117 AMP-PNP chemical Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
120 129 phosphate chemical Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
134 138 RBL1 residue_name_number Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
139 143 RBL2 residue_name_number Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
154 158 RBL1 residue_name_number Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
170 174 RBL2 residue_name_number Superposing the structures of RBL-SePSK and AMP-PNP-SePSK, the results show that the nearest distance between AMP-PNP Ξ³-phosphate and RBL1/RBL2 is 7.5 Γ… (RBL1-O5)/6.7 Γ… (RBL2-O1) (S8 Fig). RESULTS
44 53 phosphate chemical This distance is too long to transfer the Ξ³-phosphate group from ATP to the substrate. RESULTS
65 68 ATP chemical This distance is too long to transfer the Ξ³-phosphate group from ATP to the substrate. RESULTS
25 30 SePSK protein Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
60 69 structure evidence Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
95 105 structures evidence Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
109 114 SePSK protein Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
129 133 open protein_state Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
208 214 closed protein_state Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
269 284 phosphorylation ptm Since the two domains of SePSK are widely separated in this structure, we hypothesize that our structures of SePSK represent its open form, and that a conformational rearrangement must occur to switch to the closed state in order to facilitate the catalytic process of phosphorylation of sugar substrates. RESULTS
53 63 simulation experimental_method For studying such potential conformational change, a simulation on the Hingeprot Server was performed to predict the movement of different SePSK domains. RESULTS
71 87 Hingeprot Server experimental_method For studying such potential conformational change, a simulation on the Hingeprot Server was performed to predict the movement of different SePSK domains. RESULTS
139 144 SePSK protein For studying such potential conformational change, a simulation on the Hingeprot Server was performed to predict the movement of different SePSK domains. RESULTS
24 32 domain I structure_element The results showed that domain I and domain II are closer to each other with Ala228 and Thr401 in A2 as Hinge-residues. RESULTS
37 46 domain II structure_element The results showed that domain I and domain II are closer to each other with Ala228 and Thr401 in A2 as Hinge-residues. RESULTS
77 83 Ala228 residue_name_number The results showed that domain I and domain II are closer to each other with Ala228 and Thr401 in A2 as Hinge-residues. RESULTS
88 94 Thr401 residue_name_number The results showed that domain I and domain II are closer to each other with Ala228 and Thr401 in A2 as Hinge-residues. RESULTS
98 100 A2 structure_element The results showed that domain I and domain II are closer to each other with Ala228 and Thr401 in A2 as Hinge-residues. RESULTS
104 118 Hinge-residues structure_element The results showed that domain I and domain II are closer to each other with Ala228 and Thr401 in A2 as Hinge-residues. RESULTS
28 33 SePSK protein Based on the above results, SePSK is divided into two rigid parts. RESULTS
4 12 domain I structure_element The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
16 25 RBL-SePSK complex_assembly The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
31 36 1–228 residue_range The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
42 49 402–421 residue_range The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
59 68 domain II structure_element The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
72 85 AMP-PNP-SePSK complex_assembly The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
91 98 229–401 residue_range The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
105 115 superposed experimental_method The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
121 131 structures evidence The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
143 146 apo protein_state The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
147 153 AtXK-1 protein The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
155 158 apo protein_state The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
159 164 SePSK protein The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
166 181 xylulose kinase protein_type The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
187 212 Lactobacillus acidophilus species The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
238 242 S58W mutant The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
243 249 mutant protein_state The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
258 273 glycerol kinase protein_type The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
279 295 Escherichia coli species The domain I of RBL-SePSK (aa. 1–228, aa. 402–421) and the domain II of AMP-PNP-SePSK (aa. 229–401) were superposed with structures, including apo-AtXK-1, apo-SePSK, xylulose kinase from Lactobacillus acidophilus (PDB code: 3LL3) and the S58W mutant form of glycerol kinase from Escherichia coli (PDB code: 1GLJ). RESULTS
15 28 superposition experimental_method The results of superposition displayed different crossing angle between these two domains. RESULTS
6 19 superposition experimental_method After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
38 45 AMP-PNP chemical After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
48 57 phosphate chemical After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
90 94 RBL1 residue_name_number After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
106 116 superposed experimental_method After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
122 128 AtXK-1 protein After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
138 148 superposed experimental_method After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
154 159 SePSK protein After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
169 179 superposed experimental_method After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
202 212 superposed experimental_method After superposition, the distances of AMP-PNP Ξ³-phosphate and the fifth hydroxyl group of RBL1 are 7.9 Γ… (superposed with AtXK-1), 7.4 Γ… (superposed with SePSK), 6.6 Γ… (superposed with 3LL3) and 6.1 Γ… (superposed with 1GLJ). RESULTS
28 35 AMP-PNP chemical Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
38 47 phosphate chemical Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
80 84 RBL2 residue_name_number Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
96 106 superposed experimental_method Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
112 118 AtXK-1 protein Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
128 138 superposed experimental_method Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
144 149 SePSK protein Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
159 169 superposed experimental_method Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
188 195 AMP-PNP chemical Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
198 207 phosphate chemical Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
223 227 RBL2 residue_name_number Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
234 247 superposition experimental_method Meanwhile, the distances of AMP-PNP Ξ³-phosphate and the first hydroxyl group of RBL2 are 7.2 Γ… (superposed with AtXK-1), 6.7 Γ… (superposed with SePSK), 3.7 Γ… (superposed with 3LL3), until AMP-PNP Ξ³-phosphate fully contacts RBL2 after superposition with 1GLJ (Fig 5). RESULTS
22 26 RBL2 residue_name_number This distance between RBL2 and AMP-PNP-Ξ³-phosphate is close enough to facilitate phosphate transferring. RESULTS
31 38 AMP-PNP chemical This distance between RBL2 and AMP-PNP-Ξ³-phosphate is close enough to facilitate phosphate transferring. RESULTS
41 50 phosphate chemical This distance between RBL2 and AMP-PNP-Ξ³-phosphate is close enough to facilitate phosphate transferring. RESULTS
81 90 phosphate chemical This distance between RBL2 and AMP-PNP-Ξ³-phosphate is close enough to facilitate phosphate transferring. RESULTS
14 27 superposition experimental_method Together, our superposition results provided snapshots of the conformational changes at different catalytic stages of SePSK and potentially revealed the closed form of SePSK. RESULTS
118 123 SePSK protein Together, our superposition results provided snapshots of the conformational changes at different catalytic stages of SePSK and potentially revealed the closed form of SePSK. RESULTS
153 159 closed protein_state Together, our superposition results provided snapshots of the conformational changes at different catalytic stages of SePSK and potentially revealed the closed form of SePSK. RESULTS
168 173 SePSK protein Together, our superposition results provided snapshots of the conformational changes at different catalytic stages of SePSK and potentially revealed the closed form of SePSK. RESULTS
35 40 SePSK protein Simulated conformational change of SePSK during the catalytic process. FIG
4 14 structures evidence The structures are shown as cartoon and the ligands are shown as sticks. FIG
0 8 Domain I structure_element Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
14 30 D-ribulose-SePSK complex_assembly Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
43 52 Domain II structure_element Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
58 71 AMP-PNP-SePSK complex_assembly Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
83 93 superposed experimental_method Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
99 102 apo protein_state Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
103 109 AtXK-1 protein Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
117 120 apo protein_state Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
121 126 SePSK protein Domain I from D-ribulose-SePSK (green) and Domain II from AMP-PNP-SePSK (cyan) are superposed with apo-AtXK-1 (1st), apo-SePSK (2nd), 3LL3 (3rd) and 1GLJ (4th), respectively. FIG
92 95 RBL chemical The numbers near the black dashed lines show the distances (Γ…) between two nearest atoms of RBL and AMP-PNP. FIG
100 107 AMP-PNP chemical The numbers near the black dashed lines show the distances (Γ…) between two nearest atoms of RBL and AMP-PNP. FIG
16 49 structural and enzymatic analyses experimental_method In summary, our structural and enzymatic analyses provide evidence that SePSK shows D-ribulose kinase activity, and exhibits the conserved features of FGGY family carbohydrate kinases. RESULTS
72 77 SePSK protein In summary, our structural and enzymatic analyses provide evidence that SePSK shows D-ribulose kinase activity, and exhibits the conserved features of FGGY family carbohydrate kinases. RESULTS
84 101 D-ribulose kinase protein_type In summary, our structural and enzymatic analyses provide evidence that SePSK shows D-ribulose kinase activity, and exhibits the conserved features of FGGY family carbohydrate kinases. RESULTS
151 183 FGGY family carbohydrate kinases protein_type In summary, our structural and enzymatic analyses provide evidence that SePSK shows D-ribulose kinase activity, and exhibits the conserved features of FGGY family carbohydrate kinases. RESULTS
6 15 conserved site Three conserved residues in SePSK were identified to be essential for this function. RESULTS
28 33 SePSK protein Three conserved residues in SePSK were identified to be essential for this function. RESULTS
70 75 SePSK protein Our results provide the detailed information about the interaction of SePSK with ATP and substrates. RESULTS
81 84 ATP chemical Our results provide the detailed information about the interaction of SePSK with ATP and substrates. RESULTS
10 34 structural superposition experimental_method Moreover, structural superposition results enable us to visualize the conformational change of SePSK during the catalytic process. RESULTS
95 100 SePSK protein Moreover, structural superposition results enable us to visualize the conformational change of SePSK during the catalytic process. RESULTS
112 117 SePSK protein In conclusion, our results provide important information for a more detailed understanding of the mechanisms of SePSK and other members of FGGY family carbohydrate kinases. RESULTS
139 171 FGGY family carbohydrate kinases protein_type In conclusion, our results provide important information for a more detailed understanding of the mechanisms of SePSK and other members of FGGY family carbohydrate kinases. RESULTS