Stereochemistry of the decarboxylation of glyoxylic acid by yeast pyruvate decarboxylase
作者:Hiran Vegad、Mario Lobell、Stephen Bornemann、David H. G. Crout
DOI:10.1039/b002504f
日期:——
Tritiated glyoxylic acid was incubated with pyruvate decarboxylase. The hydroxymethylthiamine diphosphate formed was ozonolysed to give tritiated glycolic acid, the absolute configuration of which was investigated by analysis using glycolate oxidase. The tritiated glycolic acid proved to be racemic. The implications of this result are discussed in relation to models for the mechanism of pyruvate decarboxylase
化的乙醛酸与丙酮酸脱羧酶一起孵育。将形成的羟甲基硫胺二磷酸进行臭氧分解,得到tri化的乙醇酸,其绝对构型通过使用乙醇酸氧化酶的分析进行了研究。ti化的乙醇酸被证明是外消旋的。关于丙酮酸脱羧酶机理的模型,讨论了该结果的含义。