- EMDB-11607: Saccharomyces cerevisiae Get1/Get2 heterotetramer in complex with... -
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基本情報
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データベース: EMDB / ID: EMD-11607
タイトル
Saccharomyces cerevisiae Get1/Get2 heterotetramer in complex with a Get3 dimer
マップデータ
試料
複合体: Saccharomyces cerevisiae Get1/Get2 heterotetramer in complex with a Get3 dimer
複合体: ATPase Get3
タンパク質・ペプチド: Get3
複合体: Get1 and Get2
タンパク質・ペプチド: Get1
タンパク質・ペプチド: Get2
機能・相同性
機能・相同性情報
establishment of protein localization to endoplasmic reticulum membrane / GET complex / pheromone-dependent signal transduction involved in conjugation with cellular fusion / tail-anchored membrane protein insertion into ER membrane / 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 / retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum / response to arsenic-containing substance / response to metal ion ...establishment of protein localization to endoplasmic reticulum membrane / GET complex / pheromone-dependent signal transduction involved in conjugation with cellular fusion / tail-anchored membrane protein insertion into ER membrane / 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 / retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum / response to arsenic-containing substance / response to metal ion / protein transmembrane transporter activity / mitophagy / protein-membrane adaptor activity / protein folding chaperone / guanyl-nucleotide exchange factor activity / mitochondrial membrane / unfolded protein binding / cellular response to oxidative stress / response to heat / Golgi membrane / endoplasmic reticulum membrane / Golgi apparatus / endoplasmic reticulum / ATP hydrolysis activity / mitochondrion / ATP binding / identical protein binding / metal ion binding / cytosol 類似検索 - 分子機能
Golgi to ER traffic protein 2 / GET complex subunit Get2/sif1 / GET complex subunit GET2 / Get 1, fungi / Get1 family / CHD5-like protein / Arsenical pump ATPase, ArsA/GET3, eukaryotic / Arsenical pump ATPase, ArsA/GET3 / Anion-transporting ATPase-like domain / Anion-transporting ATPase ...Golgi to ER traffic protein 2 / GET complex subunit Get2/sif1 / GET complex subunit GET2 / Get 1, fungi / Get1 family / CHD5-like protein / Arsenical pump ATPase, ArsA/GET3, eukaryotic / Arsenical pump ATPase, ArsA/GET3 / Anion-transporting ATPase-like domain / Anion-transporting ATPase / Helix hairpin bin domain superfamily / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Golgi to ER traffic protein 2 / Golgi to ER traffic protein 1 / ATPase GET3 類似検索 - 構成要素
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.