Bifunctional purine biosynthesis protein ATIC
UniProtKB accession: P31335
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Go to UniProtKB: P31335
UniProtKB description: Bifunctional enzyme that catalyzes the last two steps of purine biosynthesis (PubMed:12501179). Acts as a transformylase that incorporates a formyl group to the AMP analog AICAR (5-amino-1-(5-phospho-beta-D-ribosyl)imidazole-4-carboxamide) to produce the intermediate formyl-AICAR (FAICAR) (PubMed:12501179). Can use both 10-formyldihydrofolate and 10-formyltetrahydrofolate as the formyl donor in this reaction. Also catalyzes the cyclization of FAICAR to inosine monophosphate (IMP). Promotes insulin receptor/INSR autophosphorylation and is involved in INSR internalization (By similarity).
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