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-Structure paper
| タイトル | Mechanism of actin filament severing and capping by gelsolin. |
|---|---|
| ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 32, Issue 2, Page 237-242, Year 2025 |
| 掲載日 | 2024年10月24日 |
著者 | Kyle R Barrie / Grzegorz Rebowski / Roberto Dominguez / ![]() |
| PubMed 要旨 | Gelsolin is the prototypical member of a family of Ca-activated F-actin severing and capping proteins. Here we report structures of Ca-bound human gelsolin at the barbed end of F-actin. One structure ...Gelsolin is the prototypical member of a family of Ca-activated F-actin severing and capping proteins. Here we report structures of Ca-bound human gelsolin at the barbed end of F-actin. One structure reveals gelsolin's six domains (G1G6) and interdomain linkers wrapping around F-actin, while another shows domains G1G3-a fragment observed during apoptosis-binding on both sides of F-actin. Conformational changes that trigger severing occur on one side of F-actin with G1G6 and on both sides with G1G3. Gelsolin remains bound after severing, blocking subunit exchange. |
リンク | Nat Struct Mol Biol / PubMed:39448849 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.53 - 3.63 Å |
| 構造データ | ![]() EMDB-43262: Consensus map of full-length gelsolin bound to the barbed end of F-actin ![]() EMDB-43263: Local refinement of G1-G3 and F-actin barbed end subunits B-0 and B-2 ![]() EMDB-43264: Local refinement of G4-G6 and F-actin barbed end subunit B-1 ![]() EMDB-43268: Local refinement of F-actin barbed end subunits B-3, B-4, and B-5 EMDB-43274, PDB-8viz: EMDB-43316, PDB-8vkh: |
| 化合物 | ![]() ChemComp-ADP: ![]() ChemComp-CA: ![]() ChemComp-ATP: |
| 由来 |
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キーワード | PROTEIN BINDING / cytoskeleton / actin / cell motility |
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