Phosphate transfer from inositol pyrophosphates InsP5PP and InsP4(PP)2: a semi-empirical investigation.
A novel phosphate transfer process involving the non-enzymatic transfer of a phosphate group from inositol pyrophosphates to serine residues in proteins has been recently reported. Semi-empirical calculations at the PM3/SM5.2 level were undertaken to explore the effect of inositol pyrophosphate structure and overall charge on the thermodynamics of this phosphate transfer.
Hand
Christine E
CE
Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Ont., Canada.
Honek
John F
JF
D000818:Animals; D001692:Biological Transport; D011756:Diphosphates / Q000737:chemistry / Q000378:metabolism; D007294:Inositol / Q000737:chemistry / Q000378:metabolism; D007295:Inositol Phosphates / Q000737:chemistry / Q000378:metabolism*; D008954:Models, Biological; D010710:Phosphates / Q000378:metabolism*; D010766:Phosphorylation
D011756:Diphosphates; D007295:Inositol Phosphates; D010710:Phosphates; C519006:inositol 1,2,3,4,6-pentaphospate 5-pyrophosphate; C519007:inositol 1,2,3,4-tetraphosphate 5,6-dipyrophosphate; D007294:Inositol