Actin is the most abundant protein in most eukaryotic cells. It is highly conserved and participates in more protein-protein interactions than any known protein. These properties, along with its ability to transition between monomeric (G-actin) and filamentous (F-actin) states under the control of nucleotide hydrolysis, ions, and a large number of actin-binding proteins, make actin a critical player in many cellular functions, ranging from cell motility and the maintenance of cell shape and polarity to the regulation of transcription. Moreover, the interaction of filamentous actin with myosin forms the basis of muscle contraction. Owing to its central role in the cell, the actin cytoskeleton is also disrupted or taken over by numerous pathogens. Here we review structures of G-actin and F-actin and discuss some of the interactions that control the polymerization and disassembly of actin.

Roberto Dominguez

Kenneth C. Holmes

Annual Review of Biophysics

自 1972 年出版的《生物物理学年度回顾》涵盖了生物物理学领域的重大发展，包括大分子结构、功能和动力学、理论和计算生物物理学、细胞的分子生物物理学、物理系统生物学、膜生物物理学、生物技术、纳米技术、和新兴技术。

Published since 1972, the Annual Review of Biophysics covers significant developments in the field of biophysics, including macromolecular structure, function and dynamics, theoretical and computational biophysics, molecular biophysics of cells, physical systems biology, membrane biophysics, biotechnology, nanotechnology, and emerging technologies.

《Annual Review of Biophysics》自1972年出版，涵盖了生物物理学领域的重大进展，包括大分子结构、功能和动力学、理论与计算生物物理学、细胞分子生物物理学、物理系统生物学、膜生物物理学、生物技术、纳米技术以及新兴技术。

Category	Quartile
生物学	1
生物学, 生物物理	1

Actin Structure and Function

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