Inositol-pentakisphosphate 2-kinase (IPPK)

Phosphorylates Ins(1,3,4,5,6)P5 at position 2 to form Ins(1,2,3,4,5,6)P6 (InsP6 or phytate). InsP6 is involved in several processes such as mRNA export, non-homologous end-joining, endocytosis, ion channel regulation.

Additionally, it protects cells from TNF-alpha-induced apoptosis. .