Inositol-trisphosphate 3-kinase B is an enzyme that in humans is encoded by the ITPKBgene.[1][2]
Function
The protein encoded by this gene regulates inositol phosphate metabolism by phosphorylation of second messenger inositol 1,4,5-trisphosphate to Ins(1,3,4,5)P4. The activity of this encoded protein is responsible for regulating the levels of a large number of inositol polyphosphates that are important in cellular signaling. Both calcium/calmodulin and protein phosphorylation mechanisms control its activity.[3] Itpkb regulates immune cell function and is required for T and B cell development.[4]
↑Erneux C, Roeckel N, Takazawa K, Mailleux P, Vassart G, Mattei MG (Dec 1992). "Localization of the genes for human inositol 1,4,5-trisphosphate 3-kinase A (ITPKA) and B (ITPKB) to chromosome regions 15q14-q21 and 1q41-q43, respectively, by in situ hybridization". Genomics. 14 (2): 546–7. doi:10.1016/S0888-7543(05)80265-4. PMID1330886.
Szlufcik K, Missiaen L, Parys JB, et al. (2006). "Uncoupled IP3 receptor can function as a Ca2+-leak channel: cell biological and pathological consequences". Biol. Cell. 98 (1): 1–14. doi:10.1042/BC20050031. PMID16354157.
