Polarity patterns of stress fibers

N. Yoshinaga, J. F. Joanny, J. Prost, P. Marcq

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Stress fibers are contractile actomyosin bundles commonly observed in the cytoskeleton of metazoan cells. The spatial profile of the polarity of actin filaments inside contractile actomyosin bundles is either monotonic (graded) or periodic (alternating). In the framework of linear irreversible thermodynamics, we write the constitutive equations for a polar, active, elastic one-dimensional medium. An analysis of the resulting equations for the dynamics of polarity shows that the transition from graded to alternating polarity patterns is a nonequilibrium Lifshitz point. Active contractility is a necessary condition for the emergence of sarcomeric, alternating polarity patterns.

本文言語English
論文番号238103
ジャーナルPhysical review letters
105
23
DOI
出版ステータスPublished - 2010 12 2
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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