+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7tzb | ||||||
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タイトル | Crystal structure of the human mitochondrial seryl-tRNA synthetase (mt SerRS) bound with a seryl-adenylate analogue | ||||||
要素 | Serine--tRNA ligase, mitochondrial | ||||||
キーワード | LIGASE / Seryl-tRNA synthetase / mitochondria / aminoacylation / translation / tRNA / class II / alpha-beta domain | ||||||
機能・相同性 | 機能・相同性情報 mitochondrial seryl-tRNA aminoacylation / Mitochondrial tRNA aminoacylation / serine-tRNA ligase / serine-tRNA ligase activity / seryl-tRNA aminoacylation / tRNA binding / mitochondrial matrix / mitochondrion / RNA binding / ATP binding 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
手法 | X線回折 / シンクロトロン / 分子置換 / 解像度: 2.95 Å | ||||||
データ登録者 | Kuhle, B. / Hirschi, M. / Doerfel, L. / Lander, G. / Schimmel, P. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2022 タイトル: Structural basis for shape-selective recognition and aminoacylation of a D-armless human mitochondrial tRNA. 著者: Bernhard Kuhle / Marscha Hirschi / Lili K Doerfel / Gabriel C Lander / Paul Schimmel / 要旨: Human mitochondrial gene expression relies on the specific recognition and aminoacylation of mitochondrial tRNAs (mtRNAs) by nuclear-encoded mitochondrial aminoacyl-tRNA synthetases (mt-aaRSs). ...Human mitochondrial gene expression relies on the specific recognition and aminoacylation of mitochondrial tRNAs (mtRNAs) by nuclear-encoded mitochondrial aminoacyl-tRNA synthetases (mt-aaRSs). Despite their essential role in cellular energy homeostasis, strong mutation pressure and genetic drift have led to an unparalleled sequence erosion of animal mtRNAs. The structural and functional consequences of this erosion are not understood. Here, we present cryo-EM structures of the human mitochondrial seryl-tRNA synthetase (mSerRS) in complex with mtRNA. These structures reveal a unique mechanism of substrate recognition and aminoacylation. The mtRNA is highly degenerated, having lost the entire D-arm, tertiary core, and stable L-shaped fold that define canonical tRNAs. Instead, mtRNA evolved unique structural innovations, including a radically altered T-arm topology that serves as critical identity determinant in an unusual shape-selective readout mechanism by mSerRS. Our results provide a molecular framework to understand the principles of mito-nuclear co-evolution and specialized mechanisms of tRNA recognition in mammalian mitochondrial gene expression. | ||||||
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 | 7tzb.cif.gz | 388.9 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7tzb.ent.gz | 319.1 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7tzb.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 | 7tzb_validation.pdf.gz | 1.1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7tzb_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | 7tzb_validation.xml.gz | 34.1 KB | 表示 | |
CIF形式データ | 7tzb_validation.cif.gz | 46 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/tz/7tzb ftp://data.pdbj.org/pub/pdb/validation_reports/tz/7tzb | 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:
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