Lamellar Phase of Stacked Two-Dimensional Rafts of Actin Filaments | Zendy

Gerard C. L. Wong | Zendy; Alison J. Lin | Zendy; Jay X. Tang | Zendy; Youli Li | Zendy; Paul A. Janmey | Zendy; Cyrus R. Safinya | Zendy

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Lamellar Phase of Stacked Two-Dimensional Rafts of Actin Filaments

Author(s) -

Gerard C. L. Wong,

Alison J. Lin,

Jay X. Tang,

Youli Li,

Paul A. Janmey,

Cyrus R. Safinya

Publication year - 2003

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.91.018103

Subject(s) - materials science , actin , lamellar structure , chemical physics , condensed matter physics , physics , microbiology and biotechnology , biology , composite material

We examined liquid crystalline phases of the cytoskeletal polyelectrolyte filamentous (F-)actin in the presence of multivalent counterions. As a function of increasing ion concentration, the F-actin rods in either an isotropic or a nematic phase will transform into a new and unexpected lamellar phase of cross-linked rafts (L(XR) phase), before condensing into a bundled phase of parallel, close-packed rods. This behavior is generic for alkali earth divalent ions Mg2+, Ca2+, Sr2+, and Ba2+, and the structural transitions are achieved without any architecture-specific actin-binding linker proteins.

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