- EMDB-16801: Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer -
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基本情報
登録情報
データベース: EMDB / ID: EMD-16801
タイトル
Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer
マップデータ
試料
複合体: Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer
複合体: Tail-anchored protein insertion receptor Get1 and Get2/CAML
タンパク質・ペプチド: Guided entry of tail-anchored proteins factor CAMLG,Guided entry of tail-anchored proteins factor 1,GET2-GET1
複合体: Dimeric ATPase Get3
タンパク質・ペプチド: ATPase ASNA1
リガンド: ZINC ION
キーワード
membrane protein insertion / GET pathway / tail anchored membrane protein / MEMBRANE PROTEIN
機能・相同性
機能・相同性情報
arsenite transmembrane transporter activity / membrane insertase activity / GET complex / tail-anchored membrane protein insertion into ER membrane / receptor recycling / 加水分解酵素; 酸無水物に作用 / protein insertion into ER membrane / post-translational protein targeting to endoplasmic reticulum membrane / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / B cell homeostasis ...arsenite transmembrane transporter activity / membrane insertase activity / GET complex / tail-anchored membrane protein insertion into ER membrane / receptor recycling / 加水分解酵素; 酸無水物に作用 / protein insertion into ER membrane / post-translational protein targeting to endoplasmic reticulum membrane / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / B cell homeostasis / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / protein-membrane adaptor activity / vesicle-mediated transport / negative regulation of protein ubiquitination / epidermal growth factor receptor signaling pathway / defense response / protein stabilization / ubiquitin protein ligase binding / endoplasmic reticulum membrane / nucleolus / endoplasmic reticulum / signal transduction / ATP hydrolysis activity / extracellular exosome / nucleoplasm / ATP binding / membrane / nucleus / metal ion binding / cytoplasm 類似検索 - 分子機能
ジャーナル: Mol Cell / 年: 2020 タイトル: Structural Basis of Tail-Anchored Membrane Protein Biogenesis by the GET Insertase Complex. 著者: Melanie A McDowell / Michael Heimes / Francesco Fiorentino / Shahid Mehmood / Ákos Farkas / Javier Coy-Vergara / Di Wu / Jani Reddy Bolla / Volker Schmid / Roger Heinze / Klemens Wild / Dirk ...著者: Melanie A McDowell / Michael Heimes / Francesco Fiorentino / Shahid Mehmood / Ákos Farkas / Javier Coy-Vergara / Di Wu / Jani Reddy Bolla / Volker Schmid / Roger Heinze / Klemens Wild / Dirk Flemming / Stefan Pfeffer / Blanche Schwappach / Carol V Robinson / Irmgard Sinning / 要旨: Membrane protein biogenesis faces the challenge of chaperoning hydrophobic transmembrane helices for faithful membrane insertion. The guided entry of tail-anchored proteins (GET) pathway targets and ...Membrane protein biogenesis faces the challenge of chaperoning hydrophobic transmembrane helices for faithful membrane insertion. The guided entry of tail-anchored proteins (GET) pathway targets and inserts tail-anchored (TA) proteins into the endoplasmic reticulum (ER) membrane with an insertase (yeast Get1/Get2 or mammalian WRB/CAML) that captures the TA from a cytoplasmic chaperone (Get3 or TRC40, respectively). Here, we present cryo-electron microscopy reconstructions, native mass spectrometry, and structure-based mutagenesis of human WRB/CAML/TRC40 and yeast Get1/Get2/Get3 complexes. Get3 binding to the membrane insertase supports heterotetramer formation, and phosphatidylinositol binding at the heterotetramer interface stabilizes the insertase for efficient TA insertion in vivo. We identify a Get2/CAML cytoplasmic helix that forms a "gating" interaction with Get3/TRC40 important for TA insertion. Structural homology with YidC and the ER membrane protein complex (EMC) implicates an evolutionarily conserved insertion mechanism for divergent substrates utilizing a hydrophilic groove. Thus, we provide a detailed structural and mechanistic framework to understand TA membrane insertion.
全体 : Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer
全体
名称: Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer
要素
複合体: Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer
複合体: Tail-anchored protein insertion receptor Get1 and Get2/CAML
タンパク質・ペプチド: Guided entry of tail-anchored proteins factor CAMLG,Guided entry of tail-anchored proteins factor 1,GET2-GET1
複合体: Dimeric ATPase Get3
タンパク質・ペプチド: ATPase ASNA1
リガンド: ZINC ION
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超分子 #1: Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer
超分子
名称: Homo sapiens Get1/Get2 heterotetramer in complex with a Get3 dimer タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 詳細: Get2-Get1 was expressed as a fusion protein in S. frugiperda and Get3 was expressed in E. coli. The complex components were purified and reconstituted in vitro.
分子量
理論値: 150 KDa
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超分子 #2: Tail-anchored protein insertion receptor Get1 and Get2/CAML
超分子
名称: Tail-anchored protein insertion receptor Get1 and Get2/CAML タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #2