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-基本情報
登録情報 | データベース: PDB / ID: 7mfm | |||||||||
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タイトル | Glutamate synthase, glutamate dehydrogenase counter-enzyme complex | |||||||||
要素 |
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キーワード | CYTOSOLIC PROTEIN (細胞質基質) / Counter-enzyme complex / glutamate synthase / glutamate dehydrogenae | |||||||||
機能・相同性 | 機能・相同性情報 glutamate synthase activity / oxidoreductase activity, acting on the CH-NH2 group of donors, NAD or NADP as acceptor / glutamate biosynthetic process / glutamate dehydrogenase (NAD+) activity / amino acid metabolic process / 3 iron, 4 sulfur cluster binding / glutamine metabolic process / iron-sulfur cluster binding / nucleotide binding / metal ion binding 類似検索 - 分子機能 | |||||||||
生物種 | Bacillus subtilis (枯草菌) | |||||||||
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: 2.42 Å | |||||||||
データ登録者 | Jayaraman, V. / Lee, D.J. / Elad, N. / Fraser, J.S. / Tawfik, D.S. | |||||||||
資金援助 | イスラエル, 米国, 2件
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引用 | ジャーナル: Nat Chem Biol / 年: 2022 タイトル: A counter-enzyme complex regulates glutamate metabolism in Bacillus subtilis. 著者: Vijay Jayaraman / D John Lee / Nadav Elad / Shay Vimer / Michal Sharon / James S Fraser / Dan S Tawfik / 要旨: Multi-enzyme assemblies composed of metabolic enzymes catalyzing sequential reactions are being increasingly studied. Here, we report the discovery of a 1.6 megadalton multi-enzyme complex from ...Multi-enzyme assemblies composed of metabolic enzymes catalyzing sequential reactions are being increasingly studied. Here, we report the discovery of a 1.6 megadalton multi-enzyme complex from Bacillus subtilis composed of two enzymes catalyzing opposite ('counter-enzymes') rather than sequential reactions: glutamate synthase (GltAB) and glutamate dehydrogenase (GudB), which make and break glutamate, respectively. In vivo and in vitro studies show that the primary role of complex formation is to inhibit the activity of GudB. Using cryo-electron microscopy, we elucidated the structure of the complex and the molecular basis of inhibition of GudB by GltAB. The complex exhibits unusual oscillatory progress curves and is necessary for both planktonic growth, in glutamate-limiting conditions, and for biofilm growth, in glutamate-rich media. The regulation of a key metabolic enzyme by complexing with its counter enzyme may thus enable cell growth under fluctuating glutamate concentrations. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7mfm.cif.gz | 2 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7mfm.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 7mfm.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
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mf/7mfm ftp://data.pdbj.org/pub/pdb/validation_reports/mf/7mfm | HTTPS FTP |
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-関連構造データ
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-集合体
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