登録情報 データベース : EMDB / ID : EMD-73221 ダウンロードとリンクタイトル Cryo-EM structure of Escherichia coli transcription initiation complex with GpA and des-hydroxy pseudouridimycin (des-hydroxy PUM) マップデータ 詳細 試料複合体 : Escherichia coli transcription initiation complex with GpA and des-hydroxy pseudouridimycin (des-hydroxy PUM)タンパク質・ペプチド : x 5種DNA : x 2種RNA : x 1種リガンド : x 3種 詳細 キーワード Transcription / Transcription initiation complex / Des-hydroxy pseudouridimycin (des-hydroxy PUM) / Inhibitor / Antibacterial agent / TRANSFERASE-DNA-RNA-INHIBITOR complex機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
sigma factor antagonist complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility ... sigma factor antagonist complex / RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type RNA polymerase core enzyme binding / cytosolic DNA-directed RNA polymerase complex / bacterial-type flagellum-dependent cell motility / nitrate assimilation / regulation of DNA-templated transcription elongation / transcription elongation factor complex / DNA-directed RNA polymerase complex / transcription antitermination / DNA-templated transcription initiation / cell motility / ribonucleoside binding / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / response to heat / protein-containing complex assembly / intracellular iron ion homeostasis / protein dimerization activity / transcription cis-regulatory region binding / response to antibiotic / negative regulation of DNA-templated transcription / regulation of DNA-templated transcription / DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / membrane / cytoplasm / cytosol 類似検索 - 分子機能 RNA polymerase sigma factor 70, non-essential domain / Sigma-70, non-essential region / RNA polymerase sigma factor 70, region 1.1 / Sigma-70 factor, region 1.1 superfamily / Sigma-70 factor, region 1.1 / Sigma-70 factors family signature 1. / RNA polymerase sigma factor RpoD, C-terminal / RNA polymerase sigma factor RpoD / : / RNA polymerase sigma-70 region 1.2 ... RNA polymerase sigma factor 70, non-essential domain / Sigma-70, non-essential region / RNA polymerase sigma factor 70, region 1.1 / Sigma-70 factor, region 1.1 superfamily / Sigma-70 factor, region 1.1 / Sigma-70 factors family signature 1. / RNA polymerase sigma factor RpoD, C-terminal / RNA polymerase sigma factor RpoD / : / RNA polymerase sigma-70 region 1.2 / Sigma-70 factor, region 1.2 / RNA polymerase sigma-70 region 3 / Sigma-70 region 3 / Sigma-70 factors family signature 2. / RNA polymerase sigma-70 / RNA polymerase sigma-70 region 4 / Sigma-70, region 4 / RNA polymerase sigma-70 region 2 / RNA polymerase sigma-70 like domain / Sigma-70 region 2 / RNA polymerase sigma factor, region 2 / RNA polymerase sigma factor, region 3/4-like / DNA-directed RNA polymerase, omega subunit / DNA-directed RNA polymerase, subunit beta-prime, bacterial type / DNA-directed RNA polymerase, beta subunit, external 1 domain superfamily / DNA-directed RNA polymerase, beta subunit, external 1 domain / RNA polymerase beta subunit external 1 domain / RNA polymerase, alpha subunit, C-terminal / Bacterial RNA polymerase, alpha chain C terminal domain / DNA-directed RNA polymerase beta subunit, bacterial-type / DNA-directed RNA polymerase, alpha subunit / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb6 / RNA polymerase Rpb2, domain 2 superfamily / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / DNA-directed RNA polymerase, insert domain / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb1, domain 2 / RNA polymerase Rpb1, domain 5 / RNA polymerase Rpb1, domain 4 / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, N-terminal / RNA polymerase Rpb1, funnel domain superfamily / RNA polymerase I subunit A N-terminus / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase, RBP11-like subunit / RNA polymerase, beta subunit, conserved site / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerase Rpb2, OB-fold / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerases beta chain signature. / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain / DNA-directed RNA polymerase, subunit 2 / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily / RNA polymerase Rpb2, domain 6 / Winged helix-like DNA-binding domain superfamily 類似検索 - ドメイン・相同性 RNA polymerase sigma factor RpoD / DNA-directed RNA polymerase subunit alpha / DNA-directed RNA polymerase subunit omega / DNA-directed RNA polymerase subunit beta' / DNA-directed RNA polymerase subunit beta 類似検索 - 構成要素生物種 Escherichia coli str. K-12 substr. MG1655 (大腸菌)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.32 Å 詳細 データ登録者You LL / Ebright RH 資金援助 米国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 米国
引用ジャーナル : ACS Med Chem Lett / 年 : 2026タイトル : Solid-phase synthesis and biological evaluation of des-hydroxy pseudouridimycin analogs.著者 : Avraz F Anwar / Linlin You / David Degen / Katie J Burns / Michael J Garza / Richard H Ebright / Juan R Del Valle / 要旨 : Pseudouridimycin (PUM) is a C-nucleoside/peptide antibiotic that selectively inhibits bacterial RNA polymerase (RNAP) and exhibits potent activity against drug-resistant pathogens. However, PUM ... Pseudouridimycin (PUM) is a C-nucleoside/peptide antibiotic that selectively inhibits bacterial RNA polymerase (RNAP) and exhibits potent activity against drug-resistant pathogens. However, PUM suffers from chemical instability due to self-immolative cleavage of its central hydroxamate bond. Here, we employed cryo-electron microscopy to determine structures of PUM () and a chemically stabilized des-hydroxy analog of PUM () bound to an RNAP transcription complex. Guided by the observed bound conformation, we developed an efficient solid-phase synthesis of 50 des-hydroxy PUM analogs modified at the Gln residue and Gdn-Gly tail. Several analogs retained low-micromolar RNAP-inhibitory activity, with a -substituted phenyl amidine analog () emerging as the most potent inhibitor (IC = 0.95 μM). These results establish a versatile synthetic platform and structural framework for optimizing stabilized PUM derivatives and provide a foundation for the development of RNAP-targeted therapeutics against resistant bacterial pathogens. 履歴 登録 2025年10月11日 - ヘッダ(付随情報) 公開 2026年4月8日 - マップ公開 2026年4月8日 - 更新 2026年4月22日 - 現状 2026年4月22日 処理サイト : RCSB / 状態 : 公開
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