+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7to3 | |||||||||
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タイトル | Structure of Enterobacter cloacae Cap2-CdnD02 2:2 complex | |||||||||
要素 |
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キーワード | TRANSFERASE / CBASS / ubiquitin E1/E2 / bacterial anti-phage defense / cGAS | |||||||||
機能・相同性 | 機能・相同性情報 nucleotide metabolic process / nucleotidyltransferase activity / 転移酵素; リンを含む基を移すもの; 核酸を移すもの / defense response to virus / GTP binding / ATP binding / metal ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Enterobacter cloacae (バクテリア) | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.74 Å | |||||||||
データ登録者 | Gu, Y. / Ye, Q. / Ledvina, H.E. / Quan, Y. / Lau, R.K. / Zhou, H. / Whiteley, A.T. / Corbett, K.D. | |||||||||
資金援助 | 米国, 2件
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引用 | ジャーナル: Nature / 年: 2023 タイトル: An E1-E2 fusion protein primes antiviral immune signalling in bacteria. 著者: Hannah E Ledvina / Qiaozhen Ye / Yajie Gu / Ashley E Sullivan / Yun Quan / Rebecca K Lau / Huilin Zhou / Kevin D Corbett / Aaron T Whiteley / 要旨: In all organisms, innate immune pathways sense infection and rapidly activate potent immune responses while avoiding inappropriate activation (autoimmunity). In humans, the innate immune receptor ...In all organisms, innate immune pathways sense infection and rapidly activate potent immune responses while avoiding inappropriate activation (autoimmunity). In humans, the innate immune receptor cyclic GMP-AMP synthase (cGAS) detects viral infection to produce the nucleotide second messenger cyclic GMP-AMP (cGAMP), which initiates stimulator of interferon genes (STING)-dependent antiviral signalling. Bacteria encode evolutionary predecessors of cGAS called cGAS/DncV-like nucleotidyltransferases (CD-NTases), which detect bacteriophage infection and produce diverse nucleotide second messengers. How bacterial CD-NTase activation is controlled remains unknown. Here we show that CD-NTase-associated protein 2 (Cap2) primes bacterial CD-NTases for activation through a ubiquitin transferase-like mechanism. A cryo-electron microscopy structure of the Cap2-CD-NTase complex reveals Cap2 as an all-in-one ubiquitin transferase-like protein, with distinct domains resembling eukaryotic E1 and E2 proteins. The structure captures a reactive-intermediate state with the CD-NTase C terminus positioned in the Cap2 E1 active site and conjugated to AMP. Cap2 conjugates the CD-NTase C terminus to a target molecule that primes the CD-NTase for increased cGAMP production. We further demonstrate that a specific endopeptidase, Cap3, balances Cap2 activity by cleaving CD-NTase-target conjugates. Our data demonstrate that bacteria control immune signalling using an ancient, minimized ubiquitin transferase-like system and provide insight into the evolution of the E1 and E2 machinery across domains of life. | |||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7to3.cif.gz | 333.7 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7to3.ent.gz | 266.6 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7to3.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7to3_validation.pdf.gz | 1.6 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7to3_full_validation.pdf.gz | 1.6 MB | 表示 | |
XML形式データ | 7to3_validation.xml.gz | 67.6 KB | 表示 | |
CIF形式データ | 7to3_validation.cif.gz | 99.8 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/to/7to3 ftp://data.pdbj.org/pub/pdb/validation_reports/to/7to3 | HTTPS FTP |
-関連構造データ
-リンク
-集合体
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域:
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