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-Structure paper
| タイトル | Mechanistic basis of teichoic acid transport by a gatekeeper flippase. |
|---|---|
| ジャーナル・号・ページ | bioRxiv, Year 2026 |
| 掲載日 | 2026年2月23日 |
著者 | Gonzalo Cebrero / Amrutha H Chidananda / Eric Cester / Julien Dénéréaz / Elif Sena Demir / Alen T Mathew / D Ryan Bhowmik / Mario de Capitani / Jean-Louis Reymond / Natarajan Kannan / Fikri Y Avci / Jan-Willem Veening / Ahmad Reza Mehdipour / Camilo Perez |
| PubMed 要旨 | The cell wall is a complex structure that protects bacteria from environmental threats. Phosphocholine-containing teichoic acids are key cell wall biopolymers critical for host colonization, immune ...The cell wall is a complex structure that protects bacteria from environmental threats. Phosphocholine-containing teichoic acids are key cell wall biopolymers critical for host colonization, immune evasion, competence, and persistence in . The flippase TacF, a member of the multidrug/oligosaccharide-lipid/polysaccharide (MOP) superfamily, monitors the phosphocholine content of teichoic acids during transport, yet the underlying mechanism of this process remains unknown. We present a cryo-EM structure of TacF in lipid nanodiscs. complementation assays and molecular dynamics simulations reveal key residues involved in teichoic acid recognition and transport, while coevolutionary and conservation analyses delineate common mechanistic elements among MOP flippases, indicating a shared mechanism for polyprenyl-diphosphate-linked oligosaccharide lipid transport. Our findings provide mechanistic insights into an essential flippase involved in pathogenesis and a potential drug target. |
リンク | bioRxiv / PubMed:41808984 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.63 Å |
| 構造データ | EMDB-72367, PDB-9xzn: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / Teichoic acid / Flippase / Transporter / Lipid transport |
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Homo sapiens (ヒト)
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