Catalysis of the reaction: ATP + diphospho-1D-myo-inositol-pentakisphosphate = ADP + bis(diphospho)-1D-myo-inositol-tetrakisphosphate. The isomeric configurations of the diphospho-1D-myo-inositol-pentakisphosphate (PP-IP5) and bis(diphospho)-1D-myo-inositol-tetrakisphosphate (bis-PP-IP4) are unknown
1. GOC: elh
2. PMID 164293263. Reactome: R-HSA-1855157 "1-PP-IP5 is phosphorylated to 1,5-(PP)2-IP4 by IP6K1/2 in the nucleus"
4. Reactome: R-HSA-1855182 "5-PP-IP5 is phosphorylated to 1,5-(PP)2-IP4 by PPIP5K1/2 in the cytosol"
5. Reactome: R-HSA-1855194 "1-PP-IP5 is phosphorylated to 1,5-(PP)2-IP4 by IP6K1/3 in the cytosol"