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-Structure paper
| タイトル | Evolutionarily diverse caveolins share a common structural framework built around amphipathic disks. |
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| ジャーナル・号・ページ | J Cell Biol, Vol. 224, Issue 9, Year 2025 |
| 掲載日 | 2025年9月1日 |
著者 | Bing Han / Sarah M Connolly / Darrin T Schultz / Louis F L Wilson / Alican Gulsevin / Jens Meiler / Erkan Karakas / Melanie D Ohi / Anne K Kenworthy / ![]() |
| PubMed 要旨 | Caveolins are a unique family of membrane remodeling proteins present broadly across animals (Metazoa), and in vertebrates form flask-shaped invaginations known as caveolae. While human caveolin-1 ...Caveolins are a unique family of membrane remodeling proteins present broadly across animals (Metazoa), and in vertebrates form flask-shaped invaginations known as caveolae. While human caveolin-1 assembles into an amphipathic disk composed of 11 spirally packed protomers, the structural basis underlying caveolin function across animals remains elusive. Here, we predicted structures for 73 caveolins spanning animal diversity, as well as a newly identified choanoflagellate caveolin from Salpingoeca rosetta. This analysis revealed seven conserved structural elements and a propensity to assemble into amphipathic disks. Cryo-EM structures of caveolins from S. rosetta choanoflagellate and the purple sea urchin Strongylocentrotus purpuratus exhibit striking structural similarities to human caveolin-1, validating the structural predictions. Lastly, tracing the chromosomal evolutionary history of caveolins revealed its parahoxozoan ancestral chromosome and evolutionary branches on which caveolins translocated and expanded. These results show that caveolins possess an ancient structural framework predating Metazoa and provide a new structural paradigm to explore the molecular basis of caveolin function across diverse evolutionary lineages. |
リンク | J Cell Biol / PubMed:40772930 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.9 - 3.1 Å |
| 構造データ | EMDB-47022, PDB-9dn0: EMDB-47023, PDB-9dn1: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / Membrane-shaping protein / monotopic membrane protein / monotonic membrane protein |
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salpingoeca rosetta (真核生物)
キーワード