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基本情報
登録情報 | データベース: PDB / ID: 4adx | ||||||
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タイトル | The Cryo-EM Structure of the Archaeal 50S Ribosomal Subunit in Complex with Initiation Factor 6 | ||||||
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![]() | RIBOSOME / PROTEIN SYNTHESIS | ||||||
機能・相同性 | ![]() ribonuclease P activity / tRNA 5'-leader removal / box C/D methylation guide snoRNP complex / translation initiation factor activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA / cytosolic ribosome assembly / ribosomal large subunit biogenesis / maturation of SSU-rRNA / small-subunit processome ...ribonuclease P activity / tRNA 5'-leader removal / box C/D methylation guide snoRNP complex / translation initiation factor activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / maturation of LSU-rRNA / cytosolic ribosome assembly / ribosomal large subunit biogenesis / maturation of SSU-rRNA / small-subunit processome / mRNA splicing, via spliceosome / ribosome binding / 5S rRNA binding / large ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / tRNA binding / cytoplasmic translation / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / DNA repair / nucleotide binding / DNA binding / RNA binding / zinc ion binding / nucleus / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
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: 6.6 Å | ||||||
Model type details | CA ATOMS ONLY, CHAIN Z, H, J, K, L, M, N, O, P, S, V, T, R, X, E, B, C, A, D, F, 3, Q, U, I, W, Y, ...CA ATOMS ONLY, CHAIN Z, H, J, K, L, M, N, O, P, S, V, T, R, X, E, B, C, A, D, F, 3, Q, U, I, W, Y, 1, 2, 4, 5, 6, 7, G ; P ATOMS ONLY, CHAIN 9, 0, 8 | ||||||
![]() | Greber, B.J. / Boehringer, D. / Godinic-Mikulcic, V. / Crnkovic, A. / Ibba, M. / Weygand-Durasevic, I. / Ban, N. | ||||||
![]() | ![]() タイトル: Cryo-EM structure of the archaeal 50S ribosomal subunit in complex with initiation factor 6 and implications for ribosome evolution. 著者: Basil J Greber / Daniel Boehringer / Vlatka Godinic-Mikulcic / Ana Crnkovic / Michael Ibba / Ivana Weygand-Durasevic / Nenad Ban / ![]() 要旨: Translation of mRNA into proteins by the ribosome is universally conserved in all cellular life. The composition and complexity of the translation machinery differ markedly between the three domains ...Translation of mRNA into proteins by the ribosome is universally conserved in all cellular life. The composition and complexity of the translation machinery differ markedly between the three domains of life. Organisms from the domain Archaea show an intermediate level of complexity, sharing several additional components of the translation machinery with eukaryotes that are absent in bacteria. One of these translation factors is initiation factor 6 (IF6), which associates with the large ribosomal subunit. We have reconstructed the 50S ribosomal subunit from the archaeon Methanothermobacter thermautotrophicus in complex with archaeal IF6 at 6.6 Å resolution using cryo-electron microscopy (EM). The structure provides detailed architectural insights into the 50S ribosomal subunit from a methanogenic archaeon through identification of the rRNA expansion segments and ribosomal proteins that are shared between this archaeal ribosome and eukaryotic ribosomes but are mostly absent in bacteria and in some archaeal lineages. Furthermore, the structure reveals that, in spite of highly divergent evolutionary trajectories of the ribosomal particle and the acquisition of novel functions of IF6 in eukaryotes, the molecular binding of IF6 on the ribosome is conserved between eukaryotes and archaea. The structure also provides a snapshot of the reductive evolution of the archaeal ribosome and offers new insights into the evolution of the translation system in archaea. | ||||||
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構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 281 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 77.8 KB | 表示 | |
CIF形式データ | ![]() | 122.9 KB | 表示 | |
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-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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要素
-RNA鎖 , 3種, 3分子 089
#1: RNA鎖 | 分子量: 946407.500 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 細胞内の位置: CYTOPLASM / 株: DELTA H |
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#9: RNA鎖 | 分子量: 43052.668 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 細胞内の位置: CYTOPLASM / 株: DELTA H |
#10: RNA鎖 | 分子量: 39303.402 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 細胞内の位置: CYTOPLASM / 株: DELTA H |
+タンパク質 , 32種, 32分子 134567ABCDEFGHIJKLMNOPQRSTUVWXYZ
-タンパク質・ペプチド , 1種, 1分子 2
#3: タンパク質・ペプチド | 分子量: 6133.090 Da / 分子数: 1 / 由来タイプ: 天然 由来: (天然) ![]() ![]() 細胞内の位置: CYTOPLASM / 株: DELTA H / 参照: UniProt: P22452*PLUS |
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-詳細
配列の詳細 | THE SOURCE ORGANISM FOR THE RIBOSOMES UNDER STUDY EMD-2012 IS METHANOTHERMOBACTER ...THE SOURCE ORGANISM FOR THE RIBOSOMES UNDER STUDY EMD-2012 IS METHANOTHE |
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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 |
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試料調製
構成要素 | 名称: 50S RIBOSOMAL SUBUNIT IN COMPLEX WITH ARCHAEAL IF6 / タイプ: RIBOSOME |
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緩衝液 | 名称: 20 MM TRIS-HCL PH 8.0, 50 MM NH4CL, 20 MM MGCL2 / pH: 8 / 詳細: 20 MM TRIS-HCL PH 8.0, 50 MM NH4CL, 20 MM MGCL2 |
試料 | 濃度: 0.25 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: HOLEY CARBON |
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / 詳細: MANUAL PLUNGING INTO LIQUID ETHANE |
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電子顕微鏡撮影
顕微鏡 | モデル: FEI TECNAI 20 |
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電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 62000 X / 倍率(補正後): 83000 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): 1200 nm |
撮影 | 電子線照射量: 20 e/Å2 フィルム・検出器のモデル: GATAN ULTRASCAN 4000 (4k x 4k) |
画像スキャン | デジタル画像の数: 553 |
放射波長 | 相対比: 1 |
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解析
EMソフトウェア |
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CTF補正 | 詳細: BY CCD FRAME | |||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||||
3次元再構成 | 手法: ANGULAR RECONSTITUTION FOLLOWED BY PROJECTION MATCHING 解像度: 6.6 Å / 粒子像の数: 70364 / ピクセルサイズ(実測値): 1.81 Å 詳細: THIS ENTRY IS A MODEL OF THE METHANOTHERMOBACTER THERMAUTOTROPHICUS 50S-AIF6 COMPLEX AND WAS GENERATED BY RIGID BODY DOCKING OF HIGH RESOLUTION STRUCTURES INTO THE EXPERIMENTAL CRYO-EM MAP EMD-2012. 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / 詳細: METHOD--RIGID BODY REFINEMENT PROTOCOL--X-RAY | |||||||||||||||||||||||||||||||||||
原子モデル構築 |
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精密化 | 最高解像度: 6.6 Å | |||||||||||||||||||||||||||||||||||
精密化ステップ | サイクル: LAST / 最高解像度: 6.6 Å
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