- EMDB-1005: Structure of the Escherichia coli ribosomal termination complex w... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-1005
タイトル
Structure of the Escherichia coli ribosomal termination complex with release factor 2.
マップデータ
E. coli ribosomal termination complex with release factor RF2.
試料
試料: release factor RF2 bound to E. coli ribosomes
複合体: ribosome
タンパク質・ペプチド: release factor 2
機能・相同性
機能・相同性情報
translation release factor activity, codon specific / translational termination / response to radiation / regulation of translation / large ribosomal subunit / transferase activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding ...translation release factor activity, codon specific / translational termination / response to radiation / regulation of translation / large ribosomal subunit / transferase activity / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / 5S rRNA binding / ribosomal large subunit assembly / cytosolic small ribosomal subunit / large ribosomal subunit rRNA binding / small ribosomal subunit rRNA binding / cytosolic large ribosomal subunit / cytoplasmic translation / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / viral translational frameshifting / mRNA binding / zinc ion binding / metal ion binding / cytosol / cytoplasm 類似検索 - 分子機能
Peptide chain release factor 2 / Peptide chain release factor 2 / Ribosomal protein L10e, archaea / Ribosomal protein L3, archaeal / Ribosomal protein L4, archaea / Ribosomal protein L5, archaeal / Peptide chain release factor / PCRF domain / PCRF / Peptide chain release factor class I superfamily ...Peptide chain release factor 2 / Peptide chain release factor 2 / Ribosomal protein L10e, archaea / Ribosomal protein L3, archaeal / Ribosomal protein L4, archaea / Ribosomal protein L5, archaeal / Peptide chain release factor / PCRF domain / PCRF / Peptide chain release factor class I superfamily / Prokaryotic-type class I peptide chain release factors signature. / : / Peptide chain release factor class I / RF-1 domain / Ribosomal protein L1, bacterial-type / 30S ribosomal protein Thx / 30S ribosomal protein Thx / 30S ribosomal protein / Ribosomal L15/L27a, N-terminal / Ribosomal protein L23 / Ribosomal protein S14, type Z / metallochaperone-like domain / TRASH domain / Ribosomal protein L1, conserved site / Ribosomal protein L1 signature. / Ribosomal protein L1 / Ribosomal protein L10e, conserved site / Ribosomal protein L10e signature. / Ribosomal protein L10e / Ribosomal protein L1, 3-layer alpha/beta-sandwich / Ribosomal protein L24e, conserved site / Ribosomal protein L24e signature. / Ribosomal protein L11, bacterial-type / Ribosomal protein L25, short-form / Ribosomal protein L1-like / Ribosomal protein L1/ribosomal biogenesis protein / Ribosomal protein L1p/L10e family / Ribosomal protein L13, eukaryotic/archaeal / Ribosomal protein L5 eukaryotic/L18 archaeal / Ribosomal large subunit proteins 60S L5, and 50S L18 / Ribosomal protein L4/L1e, eukaryotic/archaeal, conserved site / Ribosomal protein L1e signature. / Ribosomal protein L24e-related / Ribosomal protein L24e/L24 superfamily / Ribosomal protein L24e / Ribosomal protein L4, eukaryotic and archaeal type / Ribosomal protein L3, domain 3, archaeal type superfamily / Ribosomal protein L3, archaeal/eukaryotic type / Ribosomal protein L26/L24, eukaryotic/archaeal / Ribosomal proteins L26 eukaryotic, L24P archaeal / Ribosomal protein L11, conserved site / Ribosomal protein L11 signature. / : / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / Ribosomal protein L11, N-terminal / Ribosomal protein L11, N-terminal domain / Ribosomal protein L11/L12 / Ribosomal protein L11, C-terminal / Ribosomal protein L11, C-terminal domain superfamily / Ribosomal protein L11/L12, N-terminal domain superfamily / Ribosomal protein L11/L12 / Ribosomal protein L11, RNA binding domain / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / : / Ribosomal protein S19, bacterial-type / Ribosomal protein S3, bacterial-type / Ribosomal protein L6, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S11, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S4, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein S14/S29 / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L14P, bacterial-type / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein L30, bacterial-type / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S16 / : / Ribosomal protein S15, bacterial-type / Ribosomal protein S12, bacterial-type / Ribosomal protein S18 / Ribosomal protein S18 類似検索 - ドメイン・相同性
Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL14 / Peptide chain release factor RF2 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS8 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein uL4 ...Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL14 / Peptide chain release factor RF2 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein uS8 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein uL5 / Small ribosomal subunit protein uS7 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein uL13 / Large ribosomal subunit protein uL11 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein bL25 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein bS20 / Large ribosomal subunit protein uL2 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS19 / Large ribosomal subunit protein uL22 / Small ribosomal subunit protein uS5 / Large ribosomal subunit protein uL30 / Small ribosomal subunit protein bTHX / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein bS16 / Large ribosomal subunit protein uL1 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein bS18 類似検索 - 構成要素
ジャーナル: Nature / 年: 2003 タイトル: Structure of the Escherichia coli ribosomal termination complex with release factor 2. 著者: Bruno P Klaholz / Tillmann Pape / Andrey V Zavialov / Alexander G Myasnikov / Elena V Orlova / Bente Vestergaard / Måns Ehrenberg / Marin van Heel / 要旨: Termination of protein synthesis occurs when the messenger RNA presents a stop codon in the ribosomal aminoacyl (A) site. Class I release factor proteins (RF1 or RF2) are believed to recognize stop ...Termination of protein synthesis occurs when the messenger RNA presents a stop codon in the ribosomal aminoacyl (A) site. Class I release factor proteins (RF1 or RF2) are believed to recognize stop codons via tripeptide motifs, leading to release of the completed polypeptide chain from its covalent attachment to transfer RNA in the ribosomal peptidyl (P) site. Class I RFs possess a conserved GGQ amino-acid motif that is thought to be involved directly in protein-transfer-RNA bond hydrolysis. Crystal structures of bacterial and eukaryotic class I RFs have been determined, but the mechanism of stop codon recognition and peptidyl-tRNA hydrolysis remains unclear. Here we present the structure of the Escherichia coli ribosome in a post-termination complex with RF2, obtained by single-particle cryo-electron microscopy (cryo-EM). Fitting the known 70S and RF2 structures into the electron density map reveals that RF2 adopts a different conformation on the ribosome when compared with the crystal structure of the isolated protein. The amino-terminal helical domain of RF2 contacts the factor-binding site of the ribosome, the 'SPF' loop of the protein is situated close to the mRNA, and the GGQ-containing domain of RF2 interacts with the peptidyl-transferase centre (PTC). By connecting the ribosomal decoding centre with the PTC, RF2 functionally mimics a tRNA molecule in the A site. Translational termination in eukaryotes is likely to be based on a similar mechanism.
全体 : release factor RF2 bound to E. coli ribosomes
全体
名称: release factor RF2 bound to E. coli ribosomes
要素
試料: release factor RF2 bound to E. coli ribosomes
複合体: ribosome
タンパク質・ペプチド: release factor 2
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超分子 #1000: release factor RF2 bound to E. coli ribosomes
超分子
名称: release factor RF2 bound to E. coli ribosomes / タイプ: sample / ID: 1000 / 集合状態: monomer / Number unique components: 2
分子量
実験値: 2.3 MDa / 手法: sedimentation
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超分子 #1: ribosome
超分子
名称: ribosome / タイプ: complex / ID: 1 / Name.synonym: ribosome 詳細: Proteins L7/L12 of the LSU 50S subunit are not seen in the map 組換発現: No / Ribosome-details: ribosome-prokaryote: LSU 50S
Protocol: rigid body. rigid body of three individual domains keeping the connectivity; linkers betweenn domains defined based on temperature factors of crystal structure, conserved Gly and Pro residues, proteolytic sites, and global domain architecture
精密化
空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: best visual fit using the program O
得られたモデル
PDB-1ml5: Structure of the E. coli ribosomal termination complex with release factor 2
Protocol: rigid body. rigid body of three individual domains keeping the connectivity; linkers betweenn domains defined based on temperature factors of crystal structure, conserved Gly and Pro residues, proteolytic sites, and global domain architecture
精密化
空間: REAL / プロトコル: RIGID BODY FIT 当てはまり具合の基準: best visual fit using the program O
得られたモデル
PDB-1ml5: Structure of the E. coli ribosomal termination complex with release factor 2