Synthesis of isotopically labeled puromycin derivatives for kinetic isotope effect analysis of ribosome catalyzed peptide bond formation
作者:Kensuke Okuda、Amy C. Seila、Scott A. Strobel
DOI:10.1016/j.tet.2004.10.023
日期:2004.12
The mechanism by which the ribosome catalyze peptide bond formation remains controversial. Here we describe the synthesis of dinucleotides that can be used in kinetic isotope effect experiments to assess the transition state of ribosome catalyzed peptide bond formation. These substrates are the isotopically labeled dinucleotide cytidylyl-(3′-5′)-3′-amino-3′-deoxy-3′-l-phenylalanyl-N6,N6-dimethyladenosine
核糖体催化肽键形成的机制仍存在争议。在这里,我们描述了可用于动力学同位素效应实验中的二核苷酸的合成,以评估核糖体催化的肽键形成的过渡态。这些底物是同位素标记的二核苷酸胞嘧啶-(3'-5')-3'-氨基-3'-脱氧-3'-1-苯丙氨酰基-N 6,N 6-二甲基腺苷(Cm 6 A N Phe-NH 2)和胞嘧啶-(3'-5')-3'-氨基-3'-脱氧-3'-(1-2-羟基-3-苯基丙酰基)-N 6,N 6-二甲基腺苷(Cm 6 A NPhe-OH)。这些底物在肽键形成中具有活性,可用于测量核糖体催化的蛋白质合成中的动力学同位素效应。