Oxygen exchange kinetics of porcine cardiac acto-subfragment 1.
Oxygen exchange kinetics of porcine cardiac acto-subfragment 1.
复制标题
猪心脏活动亚片段 1 的氧交换动力学。
DOI:
10.1021/bi00445a034
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发表时间:
1989
期刊:
影响因子:
2.9
通讯作者:
Eisenberg,E
中科院分区:
文献类型:
--
作者:
Stein,LA;Evans,JA;Eisenberg,E
Revised Manuscript Received May 30, 1989 abstract: Recent studies have shown that the AfATPase of porcine cardiac Sl is severalfold stronger than^ binding· As with skeletal S-1, the four-state model can only explain this observation with the assumption that the release of the products of hydrolysis is rapid and not rate limiting. However, if the release of products is fast, the four-state model predicts that the extent of oxygen exchange with porcine cardiac Sl should fall toward zero at high actin concentrations, as previously observed with skeletal acto-S-1. In the current work, we show that, in fact, the extent of oxygen exchange for porcine cardiac Sl remains significant even at infinite actin concentration (ie, with cross-linked actin-S-1) and that, therefore, the four-state model cannot adequately account for the oxygen exchange data and the ratio of ATbinding to AfATPase simultaneously. As in the skeletal case, in order for the six-state model to account for these data, it is necessary to assume that P¡ rotation in the acto-S-1-ADP-Pj state is rate limiting for oxygenexchange.
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影响因子:
20.1
作者:
Stein,LA;White,MP
通讯作者:
White,MP
影响因子:
2.9
作者:
L. Stein;R. P. Schwarz;P. Chock;E. Eisenberg
通讯作者:
E. Eisenberg
影响因子:
18.2
作者:
E. Eisenberg;L. Greene
通讯作者:
L. Greene
DOI:
10.1002/jss.400030402
发表时间:
1975
期刊:
Journal of supramolecular structure
影响因子:
--
作者:
Clive R. Bagshaw;D. Trentham
通讯作者:
D. Trentham
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Rosenfeld,SS;Taylor,EW
通讯作者:
Taylor,EW