endoplasmic reticulum Sec complex / pronephric nephron development / cotranslational protein targeting to membrane / endoplasmic reticulum quality control compartment / Ssh1 translocon complex / Sec61 translocon complex / protein targeting to ER / protein insertion into ER membrane / post-translational protein targeting to endoplasmic reticulum membrane / SRP-dependent cotranslational protein targeting to membrane, translocation ...endoplasmic reticulum Sec complex / pronephric nephron development / cotranslational protein targeting to membrane / endoplasmic reticulum quality control compartment / Ssh1 translocon complex / Sec61 translocon complex / protein targeting to ER / protein insertion into ER membrane / post-translational protein targeting to endoplasmic reticulum membrane / SRP-dependent cotranslational protein targeting to membrane, translocation / signal sequence binding / SRP-dependent cotranslational protein targeting to membrane / post-translational protein targeting to membrane, translocation / endoplasmic reticulum organization / epidermal growth factor binding / retrograde protein transport, ER to cytosol / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / SRP-dependent cotranslational protein targeting to membrane / protein transmembrane transporter activity / response to type II interferon / ERAD pathway / guanyl-nucleotide exchange factor activity / calcium channel activity / ribosome binding / ER-Phagosome pathway / endoplasmic reticulum membrane / endoplasmic reticulum / RNA binding / membrane / cytosol 類似検索 - 分子機能
Protein transport Sec61-beta/Sbh / Protein transport protein SecG/Sec61-beta/Sbh / Sec61beta 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. ...Protein transport Sec61-beta/Sbh / Protein transport protein SecG/Sec61-beta/Sbh / Sec61beta 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
Protein transport protein Sec61 subunit gamma / Protein transport protein Sec61 subunit beta / Protein transport protein Sec61 subunit alpha isoform 1 類似検索 - 構成要素
ジャーナル: J Pharmacol Exp Ther / 年: 2025 タイトル: Preclinical characterization of novel multi-client inhibitors of Sec61 with broad antitumor activity. 著者: Eric Lowe / Janet L Anderl / David Bade / Cristina Delgado-Martin / Chengguo Dong / R Andrea Fan / Ying Fang / Jing Jiang / Henry W B Johnson / Aaron Kempema / Phil McGilvray / Dustin McMinn ...著者: Eric Lowe / Janet L Anderl / David Bade / Cristina Delgado-Martin / Chengguo Dong / R Andrea Fan / Ying Fang / Jing Jiang / Henry W B Johnson / Aaron Kempema / Phil McGilvray / Dustin McMinn / Beatriz Millare / Tony Muchamuel / Nicole Poweleit / Yu Qian / Shahid Rehan / Giovanna Scapin / Ajia Sugahara / Dale Tranter / Brian Tuch / Jinhai Wang / Laurie Wang / Jennifer A Whang / Patricia Zuno-Mitchell / Ville O Paavilainen / Eunyong Park / Jack Taunton / Christopher J Kirk / Neel K Anand / 要旨: The Sec61 translocon mediates entry of most secreted and transmembrane proteins into the endoplasmic reticulum, providing a novel therapeutic target to block the expression of protumorigenic factors. ...The Sec61 translocon mediates entry of most secreted and transmembrane proteins into the endoplasmic reticulum, providing a novel therapeutic target to block the expression of protumorigenic factors. Sec61 inhibitors with antitumor activity, mostly derived from natural products, have been reported. However, poor tolerability and suboptimal pharmaceutical properties have precluded their further development. We report here the discovery and characterization of KZR-834 and KZR-261, related small molecule analogs that directly bind to the Sec61 channel to potently inhibit the biogenesis of a subset of Sec61 client proteins. This client inhibition profile includes several tumorigenic factors, results in the activation of an endoplasmic reticulum stress response, and leads to broad anticancer effects in vitro. In vivo, KZR-261 was well tolerated and exhibits antitumor effects across multiple models, both as a single agent and in combination with anti-PD-1 immunotherapy. Based on the strength of this preclinical data, KZR-261 progressed into a phase I clinical trial (NCT05047536) in patients with malignant disease, where it was found to be well tolerated at doses that achieved durable stable disease. These results highlight the potential of Sec61 inhibition as a novel therapeutic target. SIGNIFICANCE STATEMENT: KZR-834 and KZR-261 are novel Sec61 inhibitors with the ability to block multiple Sec61 client proteins, leading to well-tolerated efficacy in in vivo cancer models. This represents a novel mechanism for blocking expression of oncogenic factors, including those not amenable to targeting through conventional methods.
UniProtKB: Protein transport protein Sec61 subunit beta
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分子 #3: Protein transport protein Sec61 subunit alpha isoform 1
分子
名称: Protein transport protein Sec61 subunit alpha isoform 1 タイプ: protein_or_peptide / ID: 3 詳細: Two cytosolic loops (amino acids residues 263-278 and 394-411) are mutated to enable Sec61 to bind to yeast Sec63 コピー数: 1 / 光学異性体: LEVO