Chiral analysis of the reaction stages in the Edman method for sequencing peptides
作者:John S. Davies、A. Karim A. Mohammed
DOI:10.1039/p29840001723
日期:——
Chiral isothiocyanate reagents suitable for ‘Edman sequencing’ have been synthesised and used to assess the chiral features of individual stages in the Edman method. Using h.p.l.c. analysis of the diastereoisomeric thiohydantions obtained, it has been deduced that the cyclisation and cleavage of thiazolinone step is the likely source of racemisation of the chiral centre derived from the N-terminal
合成了适用于“ Edman测序”的手性异硫氰酸盐试剂,并用于评估Edman方法中各个阶段的手性特征。使用对获得的非对映异构体硫代酰化的hplc分析,推论噻唑啉酮步骤的环化和裂解是源自N-末端氨基酸的手性中心外消旋化的可能来源。