- EMDB-22928: Structure of the yeast TRAPPIII-Ypt1(Rab1) complex -
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基本情報
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データベース: EMDB / ID: EMD-22928
タイトル
Structure of the yeast TRAPPIII-Ypt1(Rab1) complex
マップデータ
Unsharpened reconstruction
試料
複合体: TRAPPIII-Ypt1 complex
タンパク質・ペプチド: Trafficking protein particle complex subunit 23
タンパク質・ペプチド: Trafficking protein particle complex subunit 31
タンパク質・ペプチド: Trafficking protein particle complex subunit BET5
タンパク質・ペプチド: Trafficking protein particle complex subunit BET3
タンパク質・ペプチド: Trafficking protein particle complex subunit 33
タンパク質・ペプチド: Trafficking protein particle complex subunit 20
タンパク質・ペプチド: GTP-binding protein YPT1
タンパク質・ペプチド: Trafficking protein particle complex III-specific subunit 85
リガンド: PALMITIC ACID
機能・相同性
機能・相同性情報
pre-mRNA catabolic process / autophagy of peroxisome / Cvt vesicle assembly / Golgi Cisternae Pericentriolar Stack Reorganization / Golgi vesicle docking / regulation of endoplasmic reticulum unfolded protein response / Golgi vesicle budding / RAB geranylgeranylation / TRAPPI protein complex / SNARE complex disassembly ...pre-mRNA catabolic process / autophagy of peroxisome / Cvt vesicle assembly / Golgi Cisternae Pericentriolar Stack Reorganization / Golgi vesicle docking / regulation of endoplasmic reticulum unfolded protein response / Golgi vesicle budding / RAB geranylgeranylation / TRAPPI protein complex / SNARE complex disassembly / RAB GEFs exchange GTP for GDP on RABs / TRAPPII protein complex / TRAPPIII protein complex / TRAPP complex / early endosome to Golgi transport / COPI-dependent Golgi-to-ER retrograde traffic / COPI-mediated anterograde transport / COPII-mediated vesicle transport / COPII-coated vesicle budding / cis-Golgi network membrane / cytoplasm to vacuole targeting by the Cvt pathway / protein localization to phagophore assembly site / phagophore assembly site membrane / intra-Golgi vesicle-mediated transport / piecemeal microautophagy of the nucleus / Golgi stack / protein-containing complex localization / cis-Golgi network / retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum / endocytic recycling / phagophore assembly site / retrograde transport, endosome to Golgi / reticulophagy / SNARE complex assembly / sporulation resulting in formation of a cellular spore / positive regulation of macroautophagy / autophagosome assembly / chromosome organization / endomembrane system / endoplasmic reticulum to Golgi vesicle-mediated transport / Neutrophil degranulation / SNARE binding / meiotic cell cycle / macroautophagy / intracellular protein transport / trans-Golgi network / cytoplasmic vesicle / protein-containing complex assembly / endosome membrane / Golgi membrane / GTPase activity / endoplasmic reticulum membrane / GTP binding / Golgi apparatus / endoplasmic reticulum / mitochondrion / nucleus / plasma membrane / cytoplasm / cytosol 類似検索 - 分子機能
TRAPP III complex, Trs85 / ER-Golgi trafficking TRAPP I complex 85 kDa subunit / Trafficking protein particle complex subunit 2 / Sedlin, N-terminal conserved region / Trafficking protein particle complex subunit / Sybindin-like family / Sybindin-like family / TRAPP I complex, subunit 5 / TRAPP complex, Trs33 subunit / Bet3 family ...TRAPP III complex, Trs85 / ER-Golgi trafficking TRAPP I complex 85 kDa subunit / Trafficking protein particle complex subunit 2 / Sedlin, N-terminal conserved region / Trafficking protein particle complex subunit / Sybindin-like family / Sybindin-like family / TRAPP I complex, subunit 5 / TRAPP complex, Trs33 subunit / Bet3 family / Transport protein particle (TRAPP) component / Transport protein particle (TRAPP) component / NO signalling/Golgi transport ligand-binding domain superfamily / Longin-like domain superfamily / small GTPase Rab1 family profile. / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Small GTP-binding protein domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
GTP-binding protein YPT1 / Trafficking protein particle complex subunit BET3 / Trafficking protein particle complex subunit 20 / Trafficking protein particle complex III-specific subunit 85 / Trafficking protein particle complex subunit 31 / Trafficking protein particle complex subunit BET5 / Trafficking protein particle complex subunit 23 / Trafficking protein particle complex subunit 33 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM116942
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R35GM136258
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM097272
米国
National Institutes of Health/National Institute on Minority Health and Health Disparities (NIH/NIMHD)
R01HD095296
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM124559
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM124559
米国
National Science Foundation (NSF, United States)
DBI-1661380
米国
National Science Foundation (NSF, United States)
DMR-1719875
米国
Medical Research Council (MRC, United Kingdom)
MRC_UP_1201/10
英国
National Science Foundation (NSF, United States)
DGE-1650441
米国
引用
ジャーナル: EMBO J / 年: 2021 タイトル: Structural basis of TRAPPIII-mediated Rab1 activation. 著者: Aaron Mn Joiner / Ben P Phillips / Kumar Yugandhar / Ethan J Sanford / Marcus B Smolka / Haiyuan Yu / Elizabeth A Miller / J Christopher Fromme / 要旨: The GTPase Rab1 is a master regulator of the early secretory pathway and is critical for autophagy. Rab1 activation is controlled by its guanine nucleotide exchange factor, the multisubunit TRAPPIII ...The GTPase Rab1 is a master regulator of the early secretory pathway and is critical for autophagy. Rab1 activation is controlled by its guanine nucleotide exchange factor, the multisubunit TRAPPIII complex. Here, we report the 3.7 Å cryo-EM structure of the Saccharomyces cerevisiae TRAPPIII complex bound to its substrate Rab1/Ypt1. The structure reveals the binding site for the Rab1/Ypt1 hypervariable domain, leading to a model for how the complex interacts with membranes during the activation reaction. We determined that stable membrane binding by the TRAPPIII complex is required for robust activation of Rab1/Ypt1 in vitro and in vivo, and is mediated by a conserved amphipathic α-helix within the regulatory Trs85 subunit. Our results show that the Trs85 subunit serves as a membrane anchor, via its amphipathic helix, for the entire TRAPPIII complex. These findings provide a structural understanding of Rab activation on organelle and vesicle membranes.
凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 277 K / 装置: FEI VITROBOT MARK IV 詳細: Either 0.02% Tween-20 or 0.025% amphipol A8-35 was added before application of the sample to the grid..