The Closed Structure of the MscS Mechanosensitive Channel
The Closed Structure of the MscS Mechanosensitive Channel
复制标题
MScS机械敏感通道的封闭结构
DOI:
--
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发表时间:
2003
影响因子:
4.8
通讯作者:
I. Booth
中科院分区:
文献类型:
--
作者:
S. Miller;M. Edwards;Cafer Ozdemir;I. Booth
Mechanosensitive channels must make a large conformational change during the transition from the closed to the open state. The crystal structure of the open form of the Escherichia coli MscS channel was recently solved and depicts a homoheptamer (1). In this study, cross-linking of site-specific cysteine substitutions demonstrates that residues up to 10–33 Å apart in the crystal structure readily form disulfide bridges in the closed form and can also be cross-linked by a 10-Å linker. Cross-linking between adjacent subunits stabilizes the heptameric form of the channel providing biochemical evidence to support the crystal structure. The data are consistent with the published model (1) in that the membrane domain is highly flexible and that the closed to open transition may involve a significant displacement of transmembrane helices 1 and 2, possibly by as much as 30 Å. The data are also consistent with significant flexibility of the cytoplasmic domain.
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影响因子:
3.4
作者:
Sukharev, S
通讯作者:
Sukharev, S
影响因子:
2.9
作者:
Heginbotham, L;Odessey, E;Miller, C
通讯作者:
Miller, C
影响因子:
3.4
作者:
SUKHAREV, SI;MARTINAC, B;KUNG, C
通讯作者:
KUNG, C
DOI:
10.1006/jmbi.1997.1099
发表时间:
1997
期刊:
Journal of molecular biology.
影响因子:
--
作者:
Wu,J;Kaback,HR
通讯作者:
Kaback,HR
影响因子:
56.9
作者:
Chang, G;Spencer, RH;Rees, DC
通讯作者:
Rees, DC