FEATURES

DESCRIPTION

Also known as DNJC3_HUMAN, DNAJC3, P58IPK, PRKRI. Involved in the unfolded protein response (UPR) during endoplasmic reticulum (ER) stress. Acts as a negative regulator of the EIF2AK4/GCN2 kinase activity by preventing the phosphorylation of eIF-2-alpha at 'Ser-52' and hence attenuating general protein synthesis under ER stress, hypothermic and amino acid starving stress conditions (By similarity). Co-chaperone of HSPA8/HSC70, it stimulates its ATPase activity. May inhibit both the autophosphorylation of EIF2AK2/PKR and the ability of EIF2AK2 to catalyze phosphorylation of the EIF2A. May inhibit EIF2AK3/PERK activity. Interacts with EIF2AK4/GCN2; this interaction occurs under endoplasmic reticulum (ER) stress, hypothermic and amino acid starving stress conditions and inhibits EIF2AK4/GCN2 kinase activity. Interacts with EIF2AK3 (By similarity). Interacts with EIF2AK2 (PubMed:8576172). Forms a trimeric complex with DNAJB1 and HSPA8 (PubMed:9920933). Interacts with THAP12 (PubMed:9447982).

EXTERNAL LINKS

DNAJC3

DnaJ homolog subfamily C member 3

DNAJC3

Molecular Synopsis