+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8cbl | ||||||
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タイトル | Structure of human mitochondrial RNase Z in complex with mitochondrial pre-tRNA-His(0,Ser) | ||||||
要素 |
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キーワード | RNA BINDING PROTEIN / RNA maturation / RNA modification / mitochondrial tRNA / RNA methyltransferase / MRPP1 / MRPP2 / MRPP3 / m6A / RNA binding / RNA recognition | ||||||
機能・相同性 | 機能・相同性情報 tRNase Z / mitochondrial tRNA processing / tRNA-specific ribonuclease activity / mitochondrial RNA 5'-end processing / brexanolone metabolic process / isoursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / ursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase activity / mitochondrial tRNA methylation ...tRNase Z / mitochondrial tRNA processing / tRNA-specific ribonuclease activity / mitochondrial RNA 5'-end processing / brexanolone metabolic process / isoursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / ursodeoxycholate 7-beta-dehydrogenase (NAD+) activity / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase / 3-hydroxy-2-methylbutyryl-CoA dehydrogenase activity / mitochondrial tRNA methylation / rRNA processing in the mitochondrion / tRNA (adenine9-N1)-methyltransferase / tRNA (adenine(9)-N1)-methyltransferase activity / tRNA processing in the mitochondrion / tRNA (guanine9-N1)-methyltransferase / mitochondrial ribonuclease P complex / tRNA (guanosine(9)-N1)-methyltransferase activity / mitochondrial tRNA 5'-end processing / chenodeoxycholate 7-alpha-dehydrogenase (NAD+) activity / mitochondrial tRNA 3'-end processing / tRNA modification in the mitochondrion / 7alpha-hydroxysteroid dehydrogenase / 17-beta-hydroxysteroid dehydrogenase (NAD+) activity / cholate 7-alpha-dehydrogenase activity / C21-steroid hormone metabolic process / 3'-tRNA processing endoribonuclease activity / testosterone dehydrogenase [NAD(P)+] activity / tRNA methyltransferase complex / tRNA 3'-end processing / 3-hydroxyacyl-CoA dehydrogenase / isoleucine catabolic process / 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+) / tRNA-derived small RNA (tsRNA or tRNA-related fragment, tRF) biogenesis / 3-hydroxyacyl-CoA dehydrogenase activity / tRNA decay / 3alpha(or 20beta)-hydroxysteroid dehydrogenase / androstan-3-alpha,17-beta-diol dehydrogenase activity / bile acid biosynthetic process / testosterone dehydrogenase (NAD+) activity / Branched-chain amino acid catabolism / 17beta-estradiol 17-dehydrogenase / estradiol 17-beta-dehydrogenase [NAD(P)+] activity / positive regulation of mitochondrial translation / tRNA processing in the nucleus / estrogen metabolic process / fatty acid beta-oxidation / mitochondrial nucleoid / androgen metabolic process / Mitochondrial protein degradation / RNA endonuclease activity / 転移酵素; 一炭素原子の基を移すもの; メチル基を移すもの / fatty acid metabolic process / mitochondrion organization / lipid metabolic process / mRNA processing / protein homotetramerization / tRNA binding / mitochondrial matrix / mitochondrion / RNA binding / nucleoplasm / identical protein binding / nucleus / metal ion binding / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
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: 2.79 Å | ||||||
データ登録者 | MEYNIER, V. / HARDWICK, S. / CATALA, M. / ROSKE, J. / OERUM, S. / CHIRGADZE, D. / BARRAUD, P. / YU, W. / LUISI, B. / TISNE, C. | ||||||
資金援助 | フランス, 1件
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引用 | ジャーナル: Nat Commun / 年: 2024 タイトル: Structural basis for human mitochondrial tRNA maturation. 著者: Vincent Meynier / Steven W Hardwick / Marjorie Catala / Johann J Roske / Stephanie Oerum / Dimitri Y Chirgadze / Pierre Barraud / Wyatt W Yue / Ben F Luisi / Carine Tisné / 要旨: The human mitochondrial genome is transcribed into two RNAs, containing mRNAs, rRNAs and tRNAs, all dedicated to produce essential proteins of the respiratory chain. The precise excision of tRNAs by ...The human mitochondrial genome is transcribed into two RNAs, containing mRNAs, rRNAs and tRNAs, all dedicated to produce essential proteins of the respiratory chain. The precise excision of tRNAs by the mitochondrial endoribonucleases (mt-RNase), P and Z, releases all RNA species from the two RNA transcripts. The tRNAs then undergo 3'-CCA addition. In metazoan mitochondria, RNase P is a multi-enzyme assembly that comprises the endoribonuclease PRORP and a tRNA methyltransferase subcomplex. The requirement for this tRNA methyltransferase subcomplex for mt-RNase P cleavage activity, as well as the mechanisms of pre-tRNA 3'-cleavage and 3'-CCA addition, are still poorly understood. Here, we report cryo-EM structures that visualise four steps of mitochondrial tRNA maturation: 5' and 3' tRNA-end processing, methylation and 3'-CCA addition, and explain the defined sequential order of the tRNA processing steps. The methyltransferase subcomplex recognises the pre-tRNA in a distinct mode that can support tRNA-end processing and 3'-CCA addition, likely resulting from an evolutionary adaptation of mitochondrial tRNA maturation complexes to the structurally-fragile mitochondrial tRNAs. This subcomplex can also ensure a tRNA-folding quality-control checkpoint before the sequential docking of the maturation enzymes. Altogether, our study provides detailed molecular insight into RNA-transcript processing and tRNA maturation in human mitochondria. | ||||||
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 | 8cbl.cif.gz | 438.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8cbl.ent.gz | 347 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8cbl.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 | 8cbl_validation.pdf.gz | 1.2 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8cbl_full_validation.pdf.gz | 1.2 MB | 表示 | |
XML形式データ | 8cbl_validation.xml.gz | 58.5 KB | 表示 | |
CIF形式データ | 8cbl_validation.cif.gz | 89.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/cb/8cbl ftp://data.pdbj.org/pub/pdb/validation_reports/cb/8cbl | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 3種, 6分子 ABCDEF
#1: タンパク質 | 分子量: 26947.021 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) 遺伝子: HSD17B10, ERAB, HADH2, MRPP2, SCHAD, SDR5C1, XH98G2 プラスミド: pET28a-LIC / 発現宿主: Escherichia coli (大腸菌) 参照: UniProt: Q99714, 3-hydroxyacyl-CoA dehydrogenase, 17beta-estradiol 17-dehydrogenase, 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+), 3-hydroxy-2-methylbutyryl-CoA dehydrogenase, 3alpha(or ...参照: UniProt: Q99714, 3-hydroxyacyl-CoA dehydrogenase, 17beta-estradiol 17-dehydrogenase, 3alpha(17beta)-hydroxysteroid dehydrogenase (NAD+), 3-hydroxy-2-methylbutyryl-CoA dehydrogenase, 3alpha(or 20beta)-hydroxysteroid dehydrogenase, 7alpha-hydroxysteroid dehydrogenase #2: タンパク質 | | 分子量: 92281.047 Da / 分子数: 1 / Mutation: H548A / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ELAC2, HPC2 / 発現宿主: Escherichia coli (大腸菌) / 参照: UniProt: Q9BQ52, tRNase Z #3: タンパク質 | | 分子量: 48007.793 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: TRMT10C, MRPP1, RG9MTD1 / 発現宿主: Escherichia coli (大腸菌) 参照: UniProt: Q7L0Y3, 転移酵素; 一炭素原子の基を移すもの; メチル基を移すもの, tRNA (adenine9-N1)-methyltransferase, tRNA (guanine9-N1)-methyltransferase |
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-RNA鎖 , 1種, 1分子 T
#4: RNA鎖 | 分子量: 40867.301 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) 発現宿主: in vitro transcription vector pT7-TP(deltai) (その他) |
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-非ポリマー , 3種, 6分子
#5: 化合物 | ChemComp-NAD / #6: 化合物 | ChemComp-ZN / | #7: 化合物 | ChemComp-SAH / | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: Human mitochondrial RNase P in complex with mitochondrial pre-tRNA-His(0,Ser) タイプ: COMPLEX / Entity ID: #1, #3-#4 / 由来: RECOMBINANT | ||||||||||||||||||||
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分子量 | 値: 0.300 MDa / 実験値: NO | ||||||||||||||||||||
由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||
由来(組換発現) | 生物種: Escherichia coli (大腸菌) | ||||||||||||||||||||
緩衝液 | pH: 8 | ||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: This sample was monodisperse | ||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil | ||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: OTHER |
電子レンズ | モード: DIFFRACTION / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 900 nm |
撮影 | 電子線照射量: 48.9 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING ONLY | |||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 2.79 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 74166 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / Target criteria: Cross-correllation coefficient |