National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35GM128786
米国
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)
R01DK107733
米国
National Science Foundation (NSF, United States)
2047640
米国
Cancer Prevention and Research Institute of Texas (CPRIT)
RP220582
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
U24GM129547
米国
引用
ジャーナル: Nat Commun / 年: 2024 タイトル: Structural basis for Retriever-SNX17 assembly and endosomal sorting. 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 ...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 / 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.
選択した数: 1009886 / 詳細: Blob picking in cryoSPARC Live
初期モデル
モデルのタイプ: INSILICO MODEL In silico モデル: 559719 particles after 2D classification, further classified into 3 classes obtained using ab initio reconstruction.
最終 再構成
解像度のタイプ: BY AUTHOR / 解像度: 3.75 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: cryoSPARC / ソフトウェア - 詳細: Non-uniform Refinement 詳細: Local refined map of the whole particle stack used to generate the consensus volume in the masked region containing VPS29-bound half of VPS35L. 使用した粒子像数: 227973