کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5380745 1504894 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coil-helix transition of biopolymer confined in finite cylinder
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Coil-helix transition of biopolymer confined in finite cylinder
چکیده انگلیسی


- Coil-helix transition is observed in small cylinder.
- The size of space determines the shape of conformation.
- Polymer chain can hardly fold into helix for large radius R and large height H.

An off-lattice dynamic Monte Carlo method is used to study the conformations of biopolymers confined in finite cylinders. The coil-helix transition is observed with the increase of bending energy b for the polymer chain confined in small cylinder, and helical structure becomes more perfect for larger b. Periodicity of tangent-tangent correlation function C(s) begins to disappear when the cylinder height H increases, and the influence of R and b on the ability of helix formation of polymer chain weakens significantly. Therefore, the semiflexible and stiff polymer chains can fold into helix in small cylinder.

Coil-helix transition is observed when the bending energy b increases for the polymer chain confined in small cylinder. The helical structure becomes more perfect for larger b. However, helix cannot be formed in large cylinder even b is large. The structure of biopolymer is controlled by the stiffness of the chain and the size of finite cylinder.116

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics Letters - Volume 608, 21 July 2014, Pages 74-79
نویسندگان
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