Pulling Helices inside Bacteria: Imperfect Helices and Rings

被引：8

作者：

Allard, Jun F. ^{[1
]}

Rutenberg, Andrew D. ^{[2
]}

机构：

[1] Univ British Columbia, Inst Appl Math, Vancouver, BC V6T 1Z2, Canada

[2] Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 3J5, Canada

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 15期

基金：

加拿大自然科学与工程研究理事会;

关键词：

PROTEIN FTSZ ASSEMBLES; ESCHERICHIA-COLI; CELL-SHAPE; MREB; MORPHOGENESIS; FILAMENTS; CYTOSKELETON; SEGREGATION; MOVEMENT; SIGNALS;

D O I：

10.1103/PhysRevLett.102.158105

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study steady-state configurations of intrinsically-straight elastic filaments constrained within rod-shaped bacteria that have applied forces distributed along their length. Perfect steady-state helices result from axial or azimuthal forces applied at filament ends, however azimuthal forces are required for the small pitches observed for MreB filaments within bacteria. Helix-like configurations can result from distributed forces, including coexistence between rings and imperfect helices. Levels of expression and/or bundling of the polymeric protein could mediate this coexistence.

引用

页数：4

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