- EMDB-24704: Metazoan pre-targeting GET complex with SGTA (partly masked) -
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基本情報
登録情報
データベース: EMDB / ID: EMD-24704
タイトル
Metazoan pre-targeting GET complex with SGTA (partly masked)
マップデータ
sharpened partly masked cBUGGS
試料
複合体: metazoan pre-targeting GET complex cBUGG-in
機能・相同性
機能・相同性情報
BAT3 complex / immune response-activating cell surface receptor signaling pathway / NK T cell activation / GET complex / ubiquitin-like protein transferase activity / maintenance of unfolded protein / tail-anchored membrane protein insertion into ER membrane / protein carrier chaperone / positive regulation of ERAD pathway / synaptonemal complex assembly ...BAT3 complex / immune response-activating cell surface receptor signaling pathway / NK T cell activation / GET complex / ubiquitin-like protein transferase activity / maintenance of unfolded protein / tail-anchored membrane protein insertion into ER membrane / protein carrier chaperone / positive regulation of ERAD pathway / synaptonemal complex assembly / protein insertion into ER membrane / post-translational protein targeting to endoplasmic reticulum membrane / internal peptidyl-lysine acetylation / misfolded protein binding / endoplasmic reticulum stress-induced pre-emptive quality control / natural killer cell activation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / proteasome binding / ubiquitin-specific protease binding / regulation of embryonic development / intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress / polyubiquitin modification-dependent protein binding / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / proteasomal protein catabolic process / synapse assembly / ERAD pathway / negative regulation of proteolysis / Hsp70 protein binding / negative regulation of proteasomal ubiquitin-dependent protein catabolic process / lung development / molecular function activator activity / kidney development / brain development / regulation of protein stability / protein modification process / 加水分解酵素; 酸無水物に作用; 酸無水物に作用・細胞または細胞小器官の運動に関与 / protein-folding chaperone binding / ribosome binding / chromosome / chromatin organization / ubiquitin-dependent protein catabolic process / spermatogenesis / molecular adaptor activity / proteasome-mediated ubiquitin-dependent protein catabolic process / cell differentiation / protein stabilization / receptor ligand activity / signaling receptor binding / intracellular membrane-bounded organelle / apoptotic process / ubiquitin protein ligase binding / negative regulation of apoptotic process / nucleolus / ATP hydrolysis activity / extracellular exosome / nucleoplasm / ATP binding / metal ion binding / identical protein binding / nucleus / membrane / cytosol / cytoplasm 類似検索 - 分子機能
Ubl4, C-terminal TUGS domain / UBL4A-like, ubiquitin-like domain / Tethering Ubl4a to BAGS domain / Large proline-rich protein BAG6 / : / BCL2-associated athanogene 6 / Bag6, BAG-similar domain / Golgi to ER traffic protein 4 / Golgi to ER traffic protein 4 / : ...Ubl4, C-terminal TUGS domain / UBL4A-like, ubiquitin-like domain / Tethering Ubl4a to BAGS domain / Large proline-rich protein BAG6 / : / BCL2-associated athanogene 6 / Bag6, BAG-similar domain / Golgi to ER traffic protein 4 / Golgi to ER traffic protein 4 / : / Arsenical pump ATPase, ArsA/GET3, eukaryotic / Arsenical pump ATPase, ArsA/GET3 / Anion-transporting ATPase-like domain / Anion-transporting ATPase / Ubiquitin domain signature. / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin family / Ubiquitin homologues / Ubiquitin domain profile. / Tetratricopeptide-like helical domain superfamily / Ubiquitin-like domain / Ubiquitin-like domain superfamily / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Ubiquitin-like protein 4A / Large proline-rich protein BAG6 / ATPase GET3 / Golgi to ER traffic protein 4 homolog 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
DP2GM137415
米国
American Heart Association
287375208
米国
引用
ジャーナル: Nat Struct Mol Biol / 年: 2021 タイトル: Structural insights into metazoan pretargeting GET complexes. 著者: Alexander F A Keszei / Matthew C J Yip / Ta-Chien Hsieh / Sichen Shao / 要旨: Close coordination between chaperones is essential for protein biosynthesis, including the delivery of tail-anchored (TA) proteins containing a single C-terminal transmembrane domain to the ...Close coordination between chaperones is essential for protein biosynthesis, including the delivery of tail-anchored (TA) proteins containing a single C-terminal transmembrane domain to the endoplasmic reticulum (ER) by the conserved GET pathway. For successful targeting, nascent TA proteins must be promptly chaperoned and loaded onto the cytosolic ATPase Get3 through a transfer reaction involving the chaperone SGTA and bridging factors Get4, Ubl4a and Bag6. Here, we report cryo-electron microscopy structures of metazoan pretargeting GET complexes at 3.3-3.6 Å. The structures reveal that Get3 helix 8 and the Get4 C terminus form a composite lid over the Get3 substrate-binding chamber that is opened by SGTA. Another interaction with Get4 prevents formation of Get3 helix 4, which links the substrate chamber and ATPase domain. Both interactions facilitate TA protein transfer from SGTA to Get3. Our findings show how the pretargeting complex primes Get3 for coordinated client loading and ER targeting.