Histidine triad nucleotide-binding protein 1 (HINT1) is a member of the histidine triad (HIT) protein family, a group of small nucleotide-binding and -hydrolyzing proteins. HINT1 interacts with several diverse proteins and has been suggested to have tumor suppressive activities. HINT1 catalyzes the hydrolysis of adenosine 5'-monophoramidate substrates such as AMP-morpholidate, but its enzymatic function does not appear to play a role in its tumor suppression. Recent experiments demonstrate that HINT1 forms a complex with POSH and JNK in vivo, inhibiting AP-1 activity and the phosphorylation of c-Jun, and this action could contribute to the tumor suppressor activity of HINT1. Other studies raise the possibility of HINT1 as a candidate gene for schizophrenia.
17 kDa inhibitor of protein kinase C; Adenosine 5'-monophosphoramidase; FLJ30414, FLJ32340, HINT, PKCI-1, PRKCNH1, adenosine 5'-monophosphoramidase; Histidine triad nucleotide-binding protein 1; PKC inhibitor/ interacting protein; PKCI-1; Protein kinase C inhibitor 1; protein kinase C, iota; Protein kinase C-interacting protein 1