期刊論文
| 學年 | 109 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2020-09-08 |
| 作品名稱 | Crucial Role of the Intrinsic-Twist-Rate for the Size of an Intrinsically Curved Semiflexible Biopolymer |
| 作品名稱（其他語言） | |
| 著者 | Zicong Zhou |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | PHYSICAL REVIEW E 102(3), 032405 |
| 摘要 | We study the effects of the intrinsic curvature (IC), intrinsic twist rate (ITR), anisotropic bending rigidities, sequence disorder, and temperature (T ) on the persistence length (lp) of a two- or three-dimensional semiflexible biopolymer. We develop some general expressions to evaluate exactly these effects. We find that a moderate IC alone reduces lp considerably. Our results indicate that the centerline of the filament keeps as a helix in a rather large range of T when ITR is small. However, a large ITR can counterbalance the effect of IC and the result is insensitive to the twist rigidity. Moreover, a weak randomness in IC and ITR can result in an“overexpanded” state. Meanwhile, when ITR is small, lp is not a monotonic function of T but can have either minimum or maximum at some T , and in the two-dimensional case the maximum is more obvious than that in the three-dimensional case. These results reveal that to obtain a proper size at a finite T for an intrinsically curved semiflexible biopolymer, proper values of bending rigidities and ITR are necessary but a large twist rigidity may be only a by-product. Our findings are instructive in controlling the size of a semiflexible biopolymer in organic synthesis since the mean end-to-end distance and radius of gyration of a long semiflexible biopolymer are proportional to lp. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 2470-0053 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | Zicong Zhou |
| 審稿制度 | 是 |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/119077 ) |