Chain length dependence of folding transition in a semiflexible homo-polymer chain: Appearance of a core-shell structure

被引:7
作者
Higuchi, Yuji [1 ]
Sakaue, Takahiro [2 ]
Yoshikawa, Kenichi [1 ,3 ]
机构
[1] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan
[2] Kyoto Univ, Fukui Inst Fundamental Chem, Kyoto 6068103, Japan
[3] JST, ICORP, Spatio Temporal Order Project, Kyoto 6068502, Japan
基金
日本学术振兴会;
关键词
D O I
10.1016/j.cplett.2008.06.068
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The folding transition of single, long semiflexible polymers was studied with special emphasis on the chain length effect using Monte Carlo simulations. While a relatively short chain (10-25 Kuhn segments) undergoes a large discrete transition between swollen coil and compact toroid conformations, a long chain (50 Kuhn segments) exhibits an intrachain segregated state between the disordered coil and ordered toroid. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:42 / 46
页数:5
相关论文
共 20 条
[1]   Dielectric control of counterion-induced single-chain folding transition of DNA [J].
Baigl, D ;
Yoshikawa, K .
BIOPHYSICAL JOURNAL, 2005, 88 (05) :3486-3493
[2]  
Grosberg A. Y., 1994, STAT PHYS MACROMOLEC
[3]   Finite chain length effects on the coil-globule transition of stiff-chain macromolecules: A Monte Carlo simulation [J].
Ivanov, VA ;
Paul, W ;
Binder, K .
JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (13) :5659-5669
[4]  
Ivanov VA, 2000, MACROMOL THEOR SIMUL, V9, P488, DOI 10.1002/1521-3919(20001101)9:8<488::AID-MATS488>3.0.CO
[5]  
2-F
[6]   On the conformational structure of a stiff homopolymer [J].
Kuznetsov, YA ;
Timoshenko, EG .
JOURNAL OF CHEMICAL PHYSICS, 1999, 111 (08) :3744-3752
[7]   Semiflexible polymer condensates in poor solvents: Toroid versus spherical geometries [J].
Miller, ICB ;
Keentok, M ;
Pereira, GG ;
Williams, DRM .
PHYSICAL REVIEW E, 2005, 71 (03)
[8]   Elastic response of single DNA molecules exhibits a reentrant collapsing transition [J].
Murayama, Y ;
Sakamaki, Y ;
Sano, M .
PHYSICAL REVIEW LETTERS, 2003, 90 (01) :4
[9]   Morphological variation in a collapsed single homopolymer chain [J].
Noguchi, H ;
Yoshikawa, K .
JOURNAL OF CHEMICAL PHYSICS, 1998, 109 (12) :5070-5077
[10]   Hexagonally packed DNA within bacteriophage T7 stabilized by curvature stress [J].
Odijk, T .
BIOPHYSICAL JOURNAL, 1998, 75 (03) :1223-1227