This gene encodes a member of the inositol phosphokinase family. The encoded protein has 3-kinase, 5-kinase and 6-kinase activities on phosphorylated inositol substrates. The encoded protein plays an important role in the biosynthesis of inositol 1, 3, 4, 5, 6-pentakisphosphate, and has a preferred 5-kinase activity. This gene may play a role in nuclear mRNA export. Pseudogenes of this gene are located on the long arm of chromosome 13 and the short arm of chromosome 19.
3; 4; 6-tetrakisphosphate 5-kinase; inositol 1; Inositol 1,3,4,6-tetrakisphosphate 5-kinase; Inositol polyphosphate multikinase