This gene encodes a protein that belongs to the inositol
phosphokinase (IPK) family. This protein is likely responsible for
the conversion of inositol hexakisphosphate (InsP6) to
diphosphoinositol pentakisphosphate (InsP7/PP-InsP5). It may also
convert 1,3,4,5,6-pentakisphosphate (InsP5) to PP-InsP4.
Alternative splicing results in multiple transcript variants
encoding the same protein.
