Pyridoxal 5"-Phosphate as a Catalytic and Conformational Cofactor of Muscle Glycogen Phosphorylase b

被引:0
|
作者
N. B. Livanova
N. A. Chebotareva
T. B. Eronina
B. I. Kurganov
机构
[1] Russian Academy of Sciences,Bach Institute of Biochemistry
来源
Biochemistry (Moscow) | 2002年 / 67卷
关键词
glycogen phosphorylase ; mechanism of reaction; pyridoxal 5"-phosphate; regulation; thermal inactivation; quaternary structure;
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摘要
This review summarizes data on structure of muscle glycogen phosphorylase b and the role of the cofactor pyridoxal 5"-phosphate in catalysis and stabilizing the native conformation of the enzyme. Specific attention is paid to the stabilizing role of pyridoxal 5"-phosphate upon denaturation of phosphorylase b. Stability of holoenzyme, apoenzyme, and enzyme reduced by sodium borohydride is compared.
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页码:1089 / 1098
页数:9
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