Use of trypsin and lipoamidase to study the role of lipoic acid moieties in the pyruvate and alpha-ketoglutarate dehydrogenase complexes of Escherichia coli.
Use of trypsin and lipoamidase to study the role of lipoic acid moieties in the pyruvate and alpha-ketoglutarate dehydrogenase complexes of Escherichia coli.
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使用胰蛋白酶和脂酰胺酶研究硫辛酸部分在大肠杆菌的丙酮酸和 α-酮戊二酸脱氢酶复合物中的作用。
DOI:
10.1021/bi00519a007
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发表时间:
1981
期刊:
影响因子:
2.9
通讯作者:
Reed,LJ
中科院分区:
文献类型:
--
作者:
Stepp,LR;Bleile,DM;McRorie,DK;Pettit,FH;Reed,LJ
Larry R. Stepp, Dennis M. Bleile,* Donald K. McRorie, Flora H. Pettit, and Lester J. Reed* abstract: The relationships between release of 3H-labeled lipoyl moieties by trypsin and lipoamidase and accompanying loss of overall enzymatic activityof the Escherichia coli py-ruvate and-ketoglutarate dehydrogenasecomplexes were studied. Trypsin releases lipoyl domains together with their covalently attached lipoyl moieties from the “inner” core of the dihydrolipoyl transacetylase and the dihydrolipoyl transsuccinylase whereas lipoamidase releases only the lipoyl moieties. The results show that release of lipoyldomains by trypsin and release of lipoyl moieties by lipoamidaseproceeded at faster rates than the accompanying loss of overall activity of the two complexes. Trypsin released about half of the lipoyl domains in the pyruvate dehydrogenase complex without significant effect on the overall activity. A model is presented to explain these andother observations on active-site coupling via lipoyl moieties. e pyruvate and-ketoglutarate dehydrogenase complexes of Escherichia coli consist of three different enzymes that catalyze the following sequence of reactions:
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DOI:
10.1073/pnas.72.11.4440
发表时间:
1975
影响因子:
11.1
作者:
V. Jackson;D. Granner;R. Chalkley
通讯作者:
R. Chalkley
影响因子:
64.8
作者:
I. Leffak
通讯作者:
I. Leffak
影响因子:
14.9
作者:
I. Leffak
通讯作者:
I. Leffak
DOI:
10.1111/j.1432-1033.1985.tb09059.x
发表时间:
1985
期刊:
European journal of biochemistry
影响因子:
--
作者:
T. Senshu;K. Yamasu;T. Ohsawa
通讯作者:
T. Ohsawa
影响因子:
64.5
作者:
M. Seidman;A. Levine;H. Weintraub
通讯作者:
H. Weintraub