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  • 标题:A physical basis for protein secondary structure
  • 本地全文:下载
  • 作者:Rajgopal Srinivasan ; George D. Rose
  • 期刊名称:Proceedings of the National Academy of Sciences
  • 印刷版ISSN:0027-8424
  • 电子版ISSN:1091-6490
  • 出版年度:1999
  • 卷号:96
  • 期号:25
  • 页码:14258-14263
  • DOI:10.1073/pnas.96.25.14258
  • 语种:English
  • 出版社:The National Academy of Sciences of the United States of America
  • 摘要:A physical theory of protein secondary structure is proposed and tested by performing exceedingly simple Monte Carlo simulations. In essence, secondary structure propensities are predominantly a consequence of two competing local effects, one favoring hydrogen bond formation in helices and turns, the other opposing the attendant reduction in sidechain conformational entropy on helix and turn formation. These sequence specific biases are densely dispersed throughout the unfolded polypeptide chain, where they serve to preorganize the folding process and largely, but imperfectly, anticipate the native secondary structure.
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