sequence of inositol 1,4,5-trisphosphate 3-kinase B IP3KB_HUMAN EC 2.7.1.127 IMR:0200600 IP3 3-kinase B IP3-3KB IP3K IP3K B IP3K-B IP3KB ITPKB Inositol 1,4,5-trisphosphate 3-kinase B Inositol-trisphosphate 3-kinase B InsP 3-kinase B PIG37 UniProt:P27987 inositol 1,4,5-trisphosphate 3-kinase B molecule_role