+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 3iy9 | ||||||
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タイトル | Leishmania Tarentolae Mitochondrial Large Ribosomal Subunit Model | ||||||
要素 |
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キーワード | RIBOSOME / Leishmania tarentolae / Mitochondrial ribosome / CryoEM / Minimal RNA. / Mitochondrion / Ribonucleoprotein / Ribosomal protein / Transit peptide / Methylation / RNA-binding / rRNA-binding | ||||||
機能・相同性 | 機能・相同性情報 Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / mitochondrial large ribosomal subunit / mitochondrial ribosome / mitochondrial translation / mRNA regulatory element binding translation repressor activity / ribosomal large subunit assembly ...Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / mitochondrial large ribosomal subunit / mitochondrial ribosome / mitochondrial translation / mRNA regulatory element binding translation repressor activity / ribosomal large subunit assembly / mRNA 5'-UTR binding / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / mitochondrial inner membrane / cytoplasmic translation / rRNA binding / negative regulation of translation / ribosome / structural constituent of ribosome / translation / protein domain specific binding / mRNA binding / mitochondrion / RNA binding / zinc ion binding / nucleoplasm / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||
生物種 | Leishmania Tarentolae (真核生物) Homo sapiens (ヒト) Escherichia coli (大腸菌) | ||||||
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: 14.1 Å | ||||||
データ登録者 | Sharma, M.R. / Booth, T.M. / Simpson, L. / Maslov, D.A. / Agrawal, R.K. | ||||||
引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2009 タイトル: Structure of a mitochondrial ribosome with minimal RNA. 著者: Manjuli R Sharma / Timothy M Booth / Larry Simpson / Dmitri A Maslov / Rajendra K Agrawal / 要旨: The Leishmania tarentolae mitochondrial ribosome (Lmr) is a minimal ribosomal RNA (rRNA)-containing ribosome. We have obtained a cryo-EM map of the Lmr. The map reveals several features that have not ...The Leishmania tarentolae mitochondrial ribosome (Lmr) is a minimal ribosomal RNA (rRNA)-containing ribosome. We have obtained a cryo-EM map of the Lmr. The map reveals several features that have not been seen in previously-determined structures of eubacterial or eukaryotic (cytoplasmic or organellar) ribosomes to our knowledge. Comparisons of the Lmr map with X-ray crystallographic and cryo-EM maps of the eubacterial ribosomes and a cryo-EM map of the mammalian mitochondrial ribosome show that (i) the overall structure of the Lmr is considerably more porous, (ii) the topology of the intersubunit space is significantly different, with fewer intersubunit bridges, but more tunnels, and (iii) several of the functionally-important rRNA regions, including the alpha-sarcin-ricin loop, have different relative positions within the structure. Furthermore, the major portions of the mRNA channel, the tRNA passage, and the nascent polypeptide exit tunnel contain Lmr-specific proteins, suggesting that the mechanisms for mRNA recruitment, tRNA interaction, and exiting of the nascent polypeptide in Lmr must differ markedly from the mechanisms deduced for ribosomes in other organisms. Our study identifies certain structural features that are characteristic solely of mitochondrial ribosomes and other features that are characteristic of both mitochondrial and chloroplast ribosomes (i.e., organellar ribosomes). #1: ジャーナル: Science / 年: 2005 タイトル: Structures of the bacterial ribosome at 3.5 A resolution. 著者: Barbara S Schuwirth / Maria A Borovinskaya / Cathy W Hau / Wen Zhang / Antón Vila-Sanjurjo / James M Holton / Jamie H Doudna Cate / 要旨: We describe two structures of the intact bacterial ribosome from Escherichia coli determined to a resolution of 3.5 angstroms by x-ray crystallography. These structures provide a detailed view of the ...We describe two structures of the intact bacterial ribosome from Escherichia coli determined to a resolution of 3.5 angstroms by x-ray crystallography. These structures provide a detailed view of the interface between the small and large ribosomal subunits and the conformation of the peptidyl transferase center in the context of the intact ribosome. Differences between the two ribosomes reveal a high degree of flexibility between the head and the rest of the small subunit. Swiveling of the head of the small subunit observed in the present structures, coupled to the ratchet-like motion of the two subunits observed previously, suggests a mechanism for the final movements of messenger RNA (mRNA) and transfer RNAs (tRNAs) during translocation. #2: ジャーナル: J Mol Biol / 年: 2006 タイトル: A structural model for the large subunit of the mammalian mitochondrial ribosome. 著者: Jason A Mears / Manjuli R Sharma / Robin R Gutell / Amanda S McCook / Paul E Richardson / Thomas R Caulfield / Rajendra K Agrawal / Stephen C Harvey / 要旨: Protein translation is essential for all forms of life and is conducted by a macromolecular complex, the ribosome. Evolutionary changes in protein and RNA sequences can affect the 3D organization of ...Protein translation is essential for all forms of life and is conducted by a macromolecular complex, the ribosome. Evolutionary changes in protein and RNA sequences can affect the 3D organization of structural features in ribosomes in different species. The most dramatic changes occur in animal mitochondria, whose genomes have been reduced and altered significantly. The RNA component of the mitochondrial ribosome (mitoribosome) is reduced in size, with a compensatory increase in protein content. Until recently, it was unclear how these changes affect the 3D structure of the mitoribosome. Here, we present a structural model of the large subunit of the mammalian mitoribosome developed by combining molecular modeling techniques with cryo-electron microscopic data at 12.1A resolution. The model contains 93% of the mitochondrial rRNA sequence and 16 mitochondrial ribosomal proteins in the large subunit of the mitoribosome. Despite the smaller mitochondrial rRNA, the spatial positions of RNA domains known to be involved directly in protein synthesis are essentially the same as in bacterial and archaeal ribosomes. However, the dramatic reduction in rRNA content necessitates evolution of unique structural features to maintain connectivity between RNA domains. The smaller rRNA sequence also limits the likelihood of tRNA binding at the E-site of the mitoribosome, and correlates with the reduced size of D-loops and T-loops in some animal mitochondrial tRNAs, suggesting co-evolution of mitochondrial rRNA and tRNA structures. | ||||||
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 | 3iy9.cif.gz | 127.9 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb3iy9.ent.gz | 67 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 3iy9.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 | 3iy9_validation.pdf.gz | 785.6 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 3iy9_full_validation.pdf.gz | 791.4 KB | 表示 | |
XML形式データ | 3iy9_validation.xml.gz | 39 KB | 表示 | |
CIF形式データ | 3iy9_validation.cif.gz | 60.2 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/iy/3iy9 ftp://data.pdbj.org/pub/pdb/validation_reports/iy/3iy9 | 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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-要素
-RNA鎖 , 1種, 1分子 A
#1: RNA鎖 | 分子量: 327983.906 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Leishmania Tarentolae (真核生物) |
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-39S ribosomal protein ... , 9種, 9分子 BDGISMNOP
#2: タンパク質 | 分子量: 14442.636 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q5T653, UniProt: Q2TA12*PLUS |
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#4: タンパク質 | 分子量: 19707.887 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9BYD3 |
#6: タンパク質 | 分子量: 15606.364 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9Y3B7, UniProt: Q2YDI0*PLUS |
#10: タンパク質 | 分子量: 13107.179 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9NX20 |
#11: タンパク質 | 分子量: 13682.971 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9NRX2, UniProt: Q3T0L3*PLUS |
#14: タンパク質 | 分子量: 12914.133 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9NWU5, UniProt: Q3SZX5*PLUS |
#16: タンパク質 | 分子量: 11010.680 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q96A35, UniProt: Q3SYS0*PLUS |
#17: タンパク質 | 分子量: 7520.631 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: Q9P0M9 |
#20: タンパク質 | 分子量: 6092.276 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Homo sapiens (ヒト) / 参照: UniProt: O75394 |
-50S ribosomal protein ... , 10種, 10分子 CHJKLQRTXY
#3: タンパク質 | 分子量: 22277.535 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P60438 |
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#5: タンパク質 | 分子量: 6580.629 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0A7R1 |
#7: タンパク質 | 分子量: 15822.360 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0AA10 |
#8: タンパク質 | 分子量: 13320.714 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0ADY3 |
#9: タンパク質 | 分子量: 15008.471 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P02413 |
#12: タンパク質 | 分子量: 13396.828 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0A7L3 |
#13: タンパク質 | 分子量: 11586.374 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0AG48 |
#15: タンパク質 | 分子量: 11093.047 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0ADZ0 |
#18: タンパク質 | 分子量: 7286.464 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0A7M6 |
#19: タンパク質 | 分子量: 6423.625 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Escherichia coli (大腸菌) / 参照: UniProt: P0AG51 |
-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: Leishmania Mitochondrial 50S Ribosome / タイプ: RIBOSOME / 詳細: Monomer |
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分子量 | 値: 2.1 MDa / 実験値: YES |
緩衝液 | 名称: 50 mM Tris HCL, pH 7.5, 100mM KCL, 10mM MgCl2, 3mM DTT, 0.1mM EDTA, 0.05% dodecyl maltoside pH: 7.5 詳細: 50 mM Tris HCL, pH 7.5, 100mM KCL, 10mM MgCl2, 3mM DTT, 0.1mM EDTA, 0.05% dodecyl maltoside |
試料 | 濃度: 0.067 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: 50 mM Tris-HCl, pH 7.5, 100 mM KCl, 10 mM MgCl2, 3 mM DTT, 0.1 mM EDTA and 0.05% dodecyl maltoside |
試料支持 | 詳細: Thin film carbon |
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / 湿度: 90 % |
-電子顕微鏡撮影
実験機器 | モデル: Tecnai F20 / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TECNAI F20 |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 50000 X / 倍率(補正後): 50760 X / 最大 デフォーカス(公称値): 4500 nm / 最小 デフォーカス(公称値): 1600 nm / カメラ長: 0 mm |
試料ホルダ | 試料ホルダーモデル: OTHER / 資料ホルダタイプ: eucentric / 温度: 80 K / 傾斜角・最大: 0 ° / 傾斜角・最小: 0 ° |
撮影 | フィルム・検出器のモデル: KODAK SO-163 FILM |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 相対比: 1 |
-解析
EMソフトウェア | 名称: SPIDER / カテゴリ: 3次元再構成 | ||||||||||||
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CTF補正 | 詳細: Each Micrograph | ||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||
3次元再構成 | 手法: Projection Matching / 解像度: 14.1 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 53475 / 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | 空間: REAL | ||||||||||||
精密化ステップ | サイクル: LAST
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