Protein: Adenosine 5'-monophosphoramidase HINT1 (EC 3.9.1.-) (Desumoylating isopeptidase HINT1) (EC 3.4.22.-) (Histidine triad nucleotide-binding protein 1) (Protein kinase C inhibitor 1) (Protein kinase C-interacting protein 1) (PKCI-1) (P49773)
Organism: Homo sapiens (Human)
Function: Exhibits adenosine 5'-monophosphoramidase activity, hydrolyzing purine nucleotide phosphoramidates with a single phosphate group such as adenosine 5'monophosphoramidate (AMP-NH2) to yield AMP and NH2. Hydrolyzes adenosine 5'monophosphomorpholidate (AMP-morpholidate) and guanosine 5'monophosphomorpholidate (GMP-morpholidate). Hydrolyzes lysyl-AMP (AMP-N-epsilon-(N-alpha-acetyl lysine methyl ester)) generated by lysine tRNA ligase, as well as Met-AMP, His-AMP and Asp-AMP, lysyl-GMP (GMP-N-epsilon-(N-alpha-acetyl lysine methyl ester)) and AMP-N-alanine methyl ester. Hydrolyzes 3-indolepropionic acyl-adenylate, tryptamine adenosine phosphoramidate monoester and other fluorogenic purine nucleoside tryptamine phosphoramidates in vitro. Can also convert adenosine 5'-O-phosphorothioate and guanosine 5'-O-phosphorothioate to the corresponding nucleoside 5'-O-phosphates with concomitant release of hydrogen sulfide. In addition, functions as scaffolding protein that modulates transcriptional activation by the LEF1/TCF1-CTNNB1 complex and by the complex formed with MITF and CTNNB1. Modulates p53/TP53 levels and p53/TP53-mediated apoptosis. Modulates proteasomal degradation of target proteins by the SCF (SKP2-CUL1-F-box protein) E3 ubiquitin-protein ligase complex. Also exhibits SUMO-specific isopeptidase activity, deconjugating SUMO1 from RGS17. Deconjugates SUMO1 from RANGAP1 (By similarity).
Subcellular location: Cytoplasm {ECO:0000269|PubMed:10958787, ECO:0000269|PubMed:16014379, ECO:0000269|PubMed:19112177, ECO:0000269|PubMed:8812426}. Nucleus {ECO:0000269|PubMed:10958787, ECO:0000269|PubMed:16014379, ECO:0000269|PubMed:19112177, ECO:0000269|PubMed:9770345}. Note=Interaction with CDK7 leads to a more nuclear localization. {ECO:0000269|PubMed:10958787}.
InterPro domains:
- IPR001310: Histidine triad (HIT) protein (family) [1-126]
- IPR019808: Histidine triad, conserved site (conserved_site) [99-117]
- IPR011146: HIT-like domain (domain) [18-126]
- IPR036265: HIT-like superfamily (homologous_superfamily) [1-126]
Sequence:
MADEIAKAQVARPGGDTIFGKIIRKEIPAKIIFEDDRCLAFHDISPQAPTHFLVIPKKHISQISVAEDDDESLLGHLMIVGKKCAADLGLNKGYRMVVNEGSDGGQSVYHVHLHVLGGRQMHWPPG
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0140096 (catalytic activity, acting on a protein), GO:0016787 (hydrolase activity), GO:0005515 (protein binding), GO:0042802 (identical protein binding), GO:0008233 (peptidase activity), GO:0008234 (cysteine-type peptidase activity), GO:0019783 (ubiquitin-like protein peptidase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0044281 (small molecule metabolic process), GO:0009056 (catabolic process), GO:0044238 (primary metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0006520 (amino acid metabolic process), GO:1901564 (organonitrogen compound metabolic process), GO:0044282 (small molecule catabolic process), GO:1901575 (organic substance catabolic process), GO:0006082 (organic acid metabolic process), GO:0044248 (cellular catabolic process), GO:0016054 (organic acid catabolic process), GO:1901565 (organonitrogen compound catabolic process), GO:0043436 (oxoacid metabolic process), GO:1901605 (alpha-amino acid metabolic process), GO:0009063 (amino acid catabolic process), GO:0019752 (carboxylic acid metabolic process), GO:1901606 (alpha-amino acid catabolic process), GO:0046395 (carboxylic acid catabolic process), GO:0046416 (D-amino acid metabolic process), GO:0009078 (pyruvate family amino acid metabolic process), GO:0006522 (alanine metabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0016020 (membrane), GO:0005829 (cytosol), GO:0071944 (cell periphery), 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:0005886 (plasma membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0070013 (intracellular organelle lumen), GO:0031981 (nuclear lumen), GO:0005634 (nucleus)