Diphosphoinositol polyphosphate phosphohydrolase 2

UniProtKB accession:  Q8R2U6

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Cleaves a beta-phosphate from the diphosphate groups in PP-InsP5 (diphosphoinositol pentakisphosphate), PP-InsP4 and [PP]2-InsP4 (bisdiphosphoinositol tetrakisphosphate), suggesting that it may play a role in signal transduction (By similarity). Can also catalyze the hydrolysis of diadenosine 5',5'''-P1,P6-hexaphosphate (Ap6A) but not diadenosine 5',5'''-P1,P5-pentaphosphate (Ap5A) and the major reaction products are ADP and p4a from Ap6A (By similarity). Also able to hydrolyze 5-phosphoribose 1-diphosphate (By similarity). Does not play a role in U8 snoRNA decapping activity (PubMed:16141072). Binds U8 snoRNA (PubMed:16141072).