- EMDB-14776: Signal peptide mimicry primes Sec61 for client-selective inhibition -
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基本情報
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データベース: EMDB / ID: EMD-14776
タイトル
Signal peptide mimicry primes Sec61 for client-selective inhibition
マップデータ
試料
複合体: Protein conducting Sec61 translocon complex
複合体: Protein conducting Sec61 translocon complex
タンパク質・ペプチド: Protein transport protein Sec61 subunit alpha
タンパク質・ペプチド: Protein transport protein Sec61 subunit gamma
複合体: Signal peptide mimic
タンパク質・ペプチド: Cyclic depsipeptide signal peptide mimic
タンパク質・ペプチド: Protein transport protein Sec61 subunit beta
キーワード
Sec61 Translocon / cryoEM / Membrane Protein / Protein biogenesis
機能・相同性
機能・相同性情報
protein transmembrane transporter activity / protein targeting / intracellular protein transport / protein transport / endoplasmic reticulum membrane 類似検索 - 分子機能
Protein translocase SEC61 complex, gamma subunit / Protein translocase SecE domain superfamily / Translocon Sec61/SecY, plug domain / Plug domain of Sec61p / Protein secE/sec61-gamma signature. / Protein secY signature 1. / Protein secY signature 2. / SecE/Sec61-gamma subunits of protein translocation complex / Protein translocase complex, SecE/Sec61-gamma subunit / SecY/SEC61-alpha family ...Protein translocase SEC61 complex, gamma subunit / Protein translocase SecE domain superfamily / Translocon Sec61/SecY, plug domain / Plug domain of Sec61p / Protein secE/sec61-gamma signature. / Protein secY signature 1. / Protein secY signature 2. / SecE/Sec61-gamma subunits of protein translocation complex / Protein translocase complex, SecE/Sec61-gamma subunit / SecY/SEC61-alpha family / SecY domain superfamily / SecY conserved site / SecY 類似検索 - ドメイン・相同性
Translocon Sec61/SecY plug domain-containing protein / Protein transport protein Sec61 subunit gamma 類似検索 - 構成要素
ジャーナル: Nat Chem Biol / 年: 2023 タイトル: Signal peptide mimicry primes Sec61 for client-selective inhibition. 著者: Shahid Rehan / Dale Tranter / Phillip P Sharp / Gregory B Craven / Eric Lowe / Janet L Anderl / Tony Muchamuel / Vahid Abrishami / Suvi Kuivanen / Nicole A Wenzell / Andy Jennings / ...著者: Shahid Rehan / Dale Tranter / Phillip P Sharp / Gregory B Craven / Eric Lowe / Janet L Anderl / Tony Muchamuel / Vahid Abrishami / Suvi Kuivanen / Nicole A Wenzell / Andy Jennings / Chakrapani Kalyanaraman / Tomas Strandin / Matti Javanainen / Olli Vapalahti / Matthew P Jacobson / Dustin McMinn / Christopher J Kirk / Juha T Huiskonen / Jack Taunton / Ville O Paavilainen / 要旨: Preventing the biogenesis of disease-relevant proteins is an attractive therapeutic strategy, but attempts to target essential protein biogenesis factors have been hampered by excessive toxicity. ...Preventing the biogenesis of disease-relevant proteins is an attractive therapeutic strategy, but attempts to target essential protein biogenesis factors have been hampered by excessive toxicity. Here we describe KZR-8445, a cyclic depsipeptide that targets the Sec61 translocon and selectively disrupts secretory and membrane protein biogenesis in a signal peptide-dependent manner. KZR-8445 potently inhibits the secretion of pro-inflammatory cytokines in primary immune cells and is highly efficacious in a mouse model of rheumatoid arthritis. A cryogenic electron microscopy structure reveals that KZR-8445 occupies the fully opened Se61 lateral gate and blocks access to the lumenal plug domain. KZR-8445 binding stabilizes the lateral gate helices in a manner that traps select signal peptides in the Sec61 channel and prevents their movement into the lipid bilayer. Our results establish a framework for the structure-guided discovery of novel therapeutics that selectively modulate Sec61-mediated protein biogenesis.