Protein: Zinc-regulated GTPase metalloprotein activator 1A (EC 3.6.5.-) (Cobalamin synthase W domain-containing protein 1) (COBW domain-containing protein 1) (NPC-A-6 COBW domain-containing protein 1) (NPC-A-6) (Q9BRT8)
Organism: Homo sapiens (Human)
Function: Zinc chaperone that directly transfers zinc cofactor to target metalloproteins, thereby activating them. Catalyzes zinc insertion into the active site of methionine aminopeptidase METAP1, which function to cleave the initiator methionine from polypeptides during or after protein translation. Mechanistically, the N-terminal psi-PxLVp motif binds to the C6H2-type zinc finger of inactive form of METAP1. After formation of the docked complex, zinc is transferred from the CXCC motif in the GTPase domain of ZNG1A to the zinc binding site in the peptidase domain of METAP1 in a process requiring GTP hydrolysis. GTP/GDP exchange is required for release of active METAP1.
Subcellular location: Nucleus {ECO:0000250|UniProtKB:Q8VEH6}.
Sequence: MLPAVGSADEEEDPAEEDCPELVPIETTQSEEEEKSGLGAKIPVTIITGYLGAGKTTLLNYILTEQHSKRVAVILNEFGEGSALEKSLAVSQGGELYEEWLELRNGCLCCSVKDSGLRAIENLMQKKGKFDYILLETTGLADPGAVASMFWVDAELGSDIYLDGIITIVDSKYGLKHLTEEKPDGLINEATRQVALADAILINKTDLVPEEDVKKLRTTIRSINGLGQILETQRSRVDLSNVLDLHAFDSLSGISLQKKLQHVPGTQPHLDQSIVTITFEVPGNAKEEHLNMFIQNLLWEKNVRNKDNHCMEVIRLKGLVSIKDKSQQVIVQGVHELYDLEETPVSWKDDTERTNRLVLLGRNLDKDILKQLFIATVTETEKQWTTRFQEDQVCT
InterPro domains: - IPR011629: Zinc chaperone CobW-like, C-terminal (domain) [274-374]
- IPR051316: Zinc-regulated GTPase metalloprotein activator (family) [36-376]
- IPR027417: P-loop containing nucleoside triphosphate hydrolase (homologous_superfamily) [40-257]
- IPR003495: CobW/HypB/UreG, nucleotide-binding domain (domain) [43-229]
- IPR036627: CobW-like, C-terminal domain superfamily (homologous_superfamily) [256-375]
Interaction partners: - Zinc-regulated GTPase metalloprotein activator 1B
- Methionine aminopeptidase 1
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0140104 (molecular carrier activity), GO:0016530 (metallochaperone activity), GO:0016787 (hydrolase activity), GO:0016530 (metallochaperone activity), GO:0005515 (protein binding), GO:0016817 (hydrolase activity, acting on acid anhydrides), GO:0051536 (iron-sulfur cluster binding), GO:0016818 (hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides), GO:0016462 (pyrophosphatase activity), GO:0017111 (ribonucleoside triphosphate phosphatase activity), GO:0003924 (GTPase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0051179 (localization), GO:0042592 (homeostatic process), GO:0051234 (establishment of localization), GO:0048878 (chemical homeostasis), GO:0019725 (cellular homeostasis), GO:0050801 (monoatomic ion homeostasis), GO:0055082 (intracellular chemical homeostasis), GO:0098771 (inorganic ion homeostasis), GO:0006810 (transport), GO:0055080 (monoatomic cation homeostasis), GO:0006873 (intracellular monoatomic ion homeostasis), GO:0006882 (intracellular zinc ion homeostasis), GO:0030003 (intracellular monoatomic cation homeostasis)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0005829 (cytosol), GO:0005737 (cytoplasm), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0043233 (organelle lumen), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)