protein serine pyrophosphorylase activity
Catalysis of the reaction: protein phospho-serine + inositol 5-triphosphate pentakisphosphate = protein diphospho-serine + inositol 5-diphosphate pentakisphosphate.
GO:0016776
phosphotransferase activity, phosphate group as acceptor
is_a
protein serine pyrophosphatase activity
related