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-Structure paper
| タイトル | Structural basis for Retriever-SNX17 assembly and endosomal sorting. |
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| ジャーナル・号・ページ | Nat Commun, Vol. 15, Issue 1, Page 10193, Year 2024 |
| 掲載日 | 2024年11月25日 |
著者 | Amika Singla / Daniel J Boesch / Ho Yee Joyce Fung / Chigozie Ngoka / Avery S Enriquez / Ran Song / Daniel A Kramer / Yan Han / Esther Banarer / Andrew Lemoff / Puneet Juneja / Daniel D Billadeau / Xiaochen Bai / Zhe Chen / Emre E Turer / Ezra Burstein / Baoyu Chen / ![]() |
| PubMed 要旨 | During endosomal recycling, Sorting Nexin 17 (SNX17) facilitates the transport of numerous membrane cargo proteins by tethering them to the Retriever complex. Despite its importance, the mechanisms ...During endosomal recycling, Sorting Nexin 17 (SNX17) facilitates the transport of numerous membrane cargo proteins by tethering them to the Retriever complex. Despite its importance, the mechanisms underlying this interaction have remained elusive. Here, we provide biochemical, structural, cellular, and proteomic analyses of the SNX17-Retriever interaction. Our data reveal that SNX17 adopts an autoinhibited conformation in the basal state, with its FERM domain sequestering its C-terminal tail. The binding of cargo proteins to the FERM domain displaces the C-terminal tail through direct competition. The released tail engages with Retriever by binding to a highly conserved interface between its VPS35L and VPS26C subunits, as revealed by cryogenic electron microscopy (cryo-EM). Disrupting this interface impairs the Retriever-SNX17 interaction, subsequently affecting the recycling of SNX17-dependent cargoes and altering the composition of the plasma membrane proteome. Intriguingly, the SNX17-binding pocket on Retriever can be utilized by other ligands containing a consensus acidic C-terminal tail motif. Together, our findings uncover a mechanism underlying endosomal trafficking of critical cargo proteins and reveal how Retriever can potentially engage with other regulatory factors or be exploited by pathogens. |
リンク | Nat Commun / PubMed:39587083 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.35 - 3.75 Å |
| 構造データ | ![]() EMDB-43870: Local refined map of VPS35L(partial)-VPS26C-SNX17 ![]() EMDB-43871: Local refined map of VPS35L(partial)-VPS29 EMDB-43872, PDB-9au7: ![]() EMDB-43873: Human Retriever VPS35L/VPS29/VPS26C complex bound to SNX17 peptide (Consensus map) |
| 由来 |
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キーワード | PROTEIN TRANSPORT / Retreiver / CCC / Endosomal recycling / Sorting Nexin |
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