書誌事項
- タイトル別名
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- Structure of Actin Filament and Mechanism of ATPase Activation upon Actin Assembly
- アクチン ノ フィラメント コウゾウ ト ジュウゴウ キコウ : ジュウゴウ ニ ヨル ATPase カッセイカ ノ メカニズム
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説明
Actin assembly activates ATP hydrolysis, which provides structural cues for flament turnover. Polymerized actin supports cellular signaling, intracellular trafficking, and cytokinesis. We present the cryo-electron microscopic structure of F-actin in the presence of phosphate, with the visualization of some α-helical backbones and large side chains. A complete atomic model based on the cryo-EM identified intermolecular interactions, some of which were mediated by magnesium or phosphate ions. A critical role for bending of the proline-rich loop (residues 108-112) in activating ATPase was revealed. Crystal structures of G-actin mutants, which trap the catalytic site in two intermediate states, were solved. These structures combined with cryo-EM data allows us to propose a molecular mechanism for actin assembly and ATPase activation, critical for filament dynamics.<br>
収録刊行物
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- 生物物理
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生物物理 51 (6), 256-259, 2011
一般社団法人 日本生物物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001206535243392
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- NII論文ID
- 10030037949
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- NII書誌ID
- AN00129693
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- ISSN
- 13474219
- 05824052
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- NDL書誌ID
- 023356325
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可