Studies of Reversible Loop Formation of a Flexible Polymer with Two Random Reactive Sites by Monte Carlo Simulations
Date Issued
2004
Date
2004
Author(s)
Hsu, Pei-Hsien
DOI
zh-TW
Abstract
The diffusion-limited loop formation is investigated for a flexible polymer owing to the reversible intrachain reaction. The polymer is made of N hard-sphere confined by slightly extensible bonds, and the two reactive sites with binding energy - are randomly located. The open-to-closed crossover is characterized by the probability curve which depicts the variation of the open-state probability with temperature. It is found that and we can classify the loop formation into three types: (i) end-to-end, ; (ii) end-to-interior, ; (iii) interior-to-interior, . The constant G varies with locations of the reactive sites. Although the end-to-end loop is most easily formed for long polymers, the interior-to-interior loop is preferred for short chains, according to our study, we can control the probability of loop formation by utilizing loop types and contour distance between reactive sites.
Subjects
密合
環狀結構
開啟
蒙地卡羅法
Open
Monte Carlo
Closed
Loop
polymer
Dna
Type
thesis
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