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-Structure paper
| タイトル | Mouse radial spoke 3 is a metabolic and regulatory hub in cilia. |
|---|---|
| ジャーナル・号・ページ | Nat Struct Mol Biol, Vol. 32, Issue 8, Page 1542-1554, Year 2025 |
| 掲載日 | 2025年6月27日 |
著者 | Yanhe Zhao / Kangkang Song / Amirrasoul Tavakoli / Long Gui / Angeles Fernandez-Gonzalez / Song Zhang / Petras P Dzeja / S Alex Mitsialis / Xuewu Zhang / Daniela Nicastro / ![]() |
| PubMed 要旨 | Cilia are microtubule-based organelles that have important roles in cell sensing, signaling and motility. Recent studies have revealed the atomic structures of many multicomponent ciliary complexes, ...Cilia are microtubule-based organelles that have important roles in cell sensing, signaling and motility. Recent studies have revealed the atomic structures of many multicomponent ciliary complexes, elucidating their mechanisms of action. However, little is known about the structure, proteome and function of full-length radial spoke 3 (RS3), a conserved complex that transmits mechanochemical signals to coordinate ciliary motility. Here, we combined single-particle cryo-electron microscopy, cryo-electron tomography, proteomic analysis and computational modeling to determine the three-dimensional structure and atomic model of RS3 from mouse respiratory cilia. We reveal all RS3 components, including regulatory and metabolic enzymes such as a protein kinase A subunit, adenylate kinases (AKs) and malate dehydrogenases. Furthermore, we confirm RS3 loss in AK7-deficient mice, which exhibit motility defects. Our findings identify RS3 as an important regulatory and metabolic hub that maintains sufficient adenosine triphosphate for sustained ciliary beating, providing insights into the etiology of ciliopathies. |
リンク | Nat Struct Mol Biol / PubMed:40579595 / PubMed Central |
| 手法 | EM (サブトモグラム平均) / EM (単粒子) |
| 解像度 | 4.7 - 44.0 Å |
| 構造データ | ![]() EMDB-46484: Cryo-electron tomography and subtomogram averaging of WT mouse respiratory ciliary axoneme ![]() EMDB-46485: Cryo-electron tomography and subtomogram averaging of AK1-/- mouse respiratory ciliary axoneme ![]() EMDB-46486: Cryo-electron tomography and subtomogram averaging of AK7-/- mouse respiratory ciliary axoneme ![]() EMDB-46490: The cryo-EM structure of RS3 of mouse respiratory cilia ![]() EMDB-46491: The cryo-EM structure of RS3 (head and neck) of mouse respiratory cilia ![]() EMDB-46492: The cryo-EM structure of RS3 (base and stalk) of mouse respiratory cilia EMDB-46494: 3D structure and atomic structure of RS3 of mouse respiratory cilia |
| 化合物 | ![]() ChemComp-ZN: |
| 由来 |
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キーワード | STRUCTURAL PROTEIN / axoneme / radial spoke |
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