The burst phase in ribonuclease A folding and solvent dependence of the unfolded state

被引:139
作者
Qi, PX [1 ]
Sosnick, TR
Englander, SW
机构
[1] Univ Penn, Sch Med, Johnson Res Fdn, Dept Biochem & Biophys, Philadelphia, PA 19104 USA
[2] Univ Chicago, Dept Biochem & Mol Biol, Chicago, IL 60637 USA
基金
美国国家卫生研究院;
关键词
D O I
10.1038/2321
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
Submillisecond hurst phase signals measured in kinetic protein folding experiments have been widely interpreted in terms of the fast formation of productive folding intermediates. Experimental comparisons with non-folding polypeptide chains show that, for ribonuclease A and cytochrome c, these signals in fact reflect a shift from one biased ensemble of the unfolded state to another as a function of change in denaturant concentration.
引用
收藏
页码:882 / 884
页数:3
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