名称:
                                A Scalable Synthesis of the IP7 Isomer, 5-PP-Ins(1,2,3,4,6)P5
                             
                            
                                摘要:
                                The phosphorylated inositol diphosphates, including the diphosphoinositol pentakisphosphate regioisomers, play critical roles in signal transduction and cellular regulation. In particular, the IP7 isomer 5-PP-Ins(1,2,3,4,6)P-5 is implicated in a nonenzymatic phosphate transfer converting a protein serine phosphate residue to a serine diphosphate. A scalable, practical new synthesis of 5-PP-Ins(1,2,3,4,6)P-5 is described that also allows access to a variety Of IP7 and IP8 regioisomers. The identity of the synthetic 5-PP-Ins(1,2,3,4,6)P-5 was validated using IP6K1 to catalyze the conversion of IP7 + ADP to ATP + IP6.