Evidence for an unfolding and refolding pathway in cytochrome c

被引:135
作者
Xu, YJ [1 ]
Mayne, L [1 ]
Englander, SW [1 ]
机构
[1] Univ Penn, Dept Biochem & Biophys, Johnson Res Fdn, Philadelphia, PA 19104 USA
基金
美国国家卫生研究院;
关键词
D O I
10.1038/1810
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
It has been suggested that three partially unfolded forms detected in a native state hydrogen exchange study of oxidized cytochrome c may represent sequential intermediates in an unfolding-refolding pathway. To better define the structure of each intermediate a 'stability labeling' method was used in which the stability of a given segment against unfolding was changed. The condition - folded or unfolded - of the stability-labeled segment in each intermediate could then be determined. The structures found are discrete and native-like and are just those necessary for a sequential pathway.
引用
收藏
页码:774 / 778
页数:5
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