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	Statistical mechanical model for helix-sheet-coil transitions in homopolypeptides
	Liu Hong ; Jinzhi Lei
	2010-10-12 ; 2010-10-12
关键词	Theoretical or Mathematical/ molecular biophysics proteins statistical mechanics/ statistical mechanical model helix-sheet-coil transitions homopolypeptides conformation transition partition function helical propagation strand propagation factor random-coil/ A8715B Biomolecular structure, configuration, conformation, and active sites A8710 General, theoretical, and mathematical biophysics
中文摘要	In this paper, we propose a simple statistical mechanical model to study the conformation transition between the alpha helix, beta sheet, and random coil in homopolypeptides. In our model, five parameters are introduced to obtain the partition function. There are two factors for helical propagation and initiation, which are the same as those used in the Zimm-Bragg model, and three newly introduced parameters for beta structures: the strand propagation factor for residues in beta strands and two correction factors for the initiation effect of the beta strand and beta sheet. Our model shows that the variation of these parameters may induce conformation transition from alpha helix or random coil to beta sheet. The sharpness of the transition depends on the initiation factors.
语种	英语
出版者	American Physical Society ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78705]
专题	清华大学
推荐引用方式 GB/T 7714	Liu Hong,Jinzhi Lei. Statistical mechanical model for helix-sheet-coil transitions in homopolypeptides[J],2010, 2010.
APA	Liu Hong,&Jinzhi Lei.(2010).Statistical mechanical model for helix-sheet-coil transitions in homopolypeptides..
MLA	Liu Hong,et al."Statistical mechanical model for helix-sheet-coil transitions in homopolypeptides".(2010).

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