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豌豆中3-磷酸甘油酸脱氢酶的分离与特性研究

The isolation and characterization of 3-phosphoglycerate dehydrogenase from peas.

作者信息

Slaughter J C, Davies D D

出版信息

Biochem J. 1968 Oct;109(5):743-8. doi: 10.1042/bj1090743.

Abstract
  1. 3-Phosphoglycerate dehydrogenase was purified 400-fold from crude extracts of etiolated pea epicotyls. 2. Michaelis constants were determined for all four substrates. 3. Loss of sensitivity to inhibition by l-serine occurs on purification. 4. The purified enzyme is inhibited by thiol-group reagents and, with N-ethyl-maleimide, protection is afforded by 3-phosphoglycerate though not by NAD(+).
摘要
  1. 从黄化豌豆上胚轴的粗提物中纯化出了3-磷酸甘油酸脱氢酶,纯化倍数为400倍。

  2. 测定了所有四种底物的米氏常数。

  3. 纯化过程中对L-丝氨酸抑制的敏感性丧失。

  4. 纯化后的酶受到巯基试剂的抑制,对于N-乙基马来酰亚胺,3-磷酸甘油酸可提供保护作用,但NAD(+)不能。

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