Probing the D-1,4,5-IP3/D-1,3,4,5-IP4 functional interface. Synthesis and pharmacology of novel D-3-modified myo-inositol trisphosphate analogues
Abstract
To explore the biological significance of the D-3 position phosphorylation of the second messenger D-myo-inositol 1,4,5-trisphosphate (IP3) in cellular signalling, three novel D-3-substituted analogues of IP3 have been synthesized; their binding and Ca2+-release profiles at the IP3-receptor have been studied and shown to correlate with the steric requirement of the D-3 substituent.