Inositol hexakisphosphate and diphosphoinositol-pentakisphosphate kinase 1/2 (PPIP5K1) and 2 (PPIP5K2) phosphorylate inositol 5-diphospho-1,2,3,4,6-pentakisphosphate (5-PP-IP5) to inositol 1,5-bisdiphospho-2,3,4,6-tetrakisphosphate (1,5-(PP)2-IP4) (Fridy et al. 2007, Mulugu et al. 2007, Choi et al. 2007, Lin et al. 2009).
Falck, JR, Ribeiro, AA, Mayr, GW, Choi, JH, York, JD, Vogel, G, Barma, DK, Fridy, PC, Shears, SB, Lin, H
Cho, J, Williams, J, Falck, JR, Choi, JH, Shears, SB
Dollins, DE, Otto, JC, York, JD, Fridy, PC
Haystead, TA, Dollins, DE, Ribeiro, AA, Otto, JC, Bai, W, York, JD, Mulugu, S, Fridy, PC, Bastidas, RJ
inositol heptakisphosphate kinase activity of PPIP5K1/2 [cytosol]
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