- EMDB-8149: Cryo-EM structure of a full archaeal ribosomal translation initia... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-8149
タイトル
Cryo-EM structure of a full archaeal ribosomal translation initiation complex in the P-INconformation
マップデータ
None
試料
複合体: 30S archaeal translation initiation complex
複合体: 30S archaeal translation initiation complex
RNA: x 1種
タンパク質・ペプチド: x 28種
複合体: 30S archaeal translation initiation complex
タンパク質・ペプチド: x 5種
複合体: 30S archaeal translation initiation complex
RNA: x 1種
複合体: 30S archaeal translation initiation complex
RNA: x 1種
リガンド: x 4種
キーワード
transcription
機能・相同性
機能・相同性情報
translation reinitiation / selenocysteine metabolic process / selenocysteine incorporation / selenocysteine insertion sequence binding / protein-synthesizing GTPase / formation of cytoplasmic translation initiation complex / formation of translation preinitiation complex / ribonuclease P activity / tRNA 5'-leader removal / translation elongation factor activity ...translation reinitiation / selenocysteine metabolic process / selenocysteine incorporation / selenocysteine insertion sequence binding / protein-synthesizing GTPase / formation of cytoplasmic translation initiation complex / formation of translation preinitiation complex / ribonuclease P activity / tRNA 5'-leader removal / translation elongation factor activity / translation initiation factor binding / translation initiation factor activity / 90S preribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / translational initiation / maturation of SSU-rRNA / positive regulation of apoptotic signaling pathway / ribosome biogenesis / ribosome binding / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / tRNA binding / cytoplasmic translation / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / GTPase activity / mRNA binding / GTP binding / RNA binding / zinc ion binding / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能
Translation factor SUI1 homolog, archaea / Archaeal/bacterial translation initiation factor SUI1 / Translation initiation factor 2, alpha subunit, archaeal / Translation initiation factor 2, beta subunit / Ribosomal protein S27ae / Translation initiation factor 2, gamma subunit / : / Ribosomal protein S9, archaeal / Ribosomal protein S13, archaeal / Ribosomal protein S17, archaeal ...Translation factor SUI1 homolog, archaea / Archaeal/bacterial translation initiation factor SUI1 / Translation initiation factor 2, alpha subunit, archaeal / Translation initiation factor 2, beta subunit / Ribosomal protein S27ae / Translation initiation factor 2, gamma subunit / : / Ribosomal protein S9, archaeal / Ribosomal protein S13, archaeal / Ribosomal protein S17, archaeal / Ribosomal protein S6e, archaeal / Ribosomal protein S4, archaeal / Ribosomal protein S12, archaea / Ribosomal protein S3, archaeal / 30S ribosomal protein S3Ae / Ribosomal protein S7, archaeal / Ribosomal protein S19e, archaeal / Ribosomal protein S11, archaeal / Ribosomal protein S2, archaeal / Ribosomal protein S14, type Z, archaeal / Ribosomal protein S8e, archaeal / SUI1 domain superfamily / Translation initiation factor SUI1 / Translation initiation factor SUI1 family profile. / SUI1 domain / Translation initiation factor IF2/IF5 / Translation initiation factor IF2/IF5 domain / Translation initiation factor IF2/IF5, N-terminal / Translation initiation factor IF2/IF5, zinc-binding / Domain found in IF2B/IF5 / domain present in translation initiation factor eIF2B and eIF5 / Translation initiation factor 1A (eIF-1A), conserved site / Eukaryotic initiation factor 1A signature. / eukaryotic translation initiation factor 1A / Translation initiation factor 1A (eIF-1A) / IF2a, S1-like domain / Translation initiation factor 2, alpha subunit / Translation initiation factor 2, alpha subunit, middle domain superfamily / Translation initiation factor 2, alpha subunit, C-terminal / Eukaryotic translation initiation factor 2 alpha subunit / Initiation factor eIF2 gamma, domain 2 / Initiation factor eIF2 gamma, GTP-binding domain / Initiation factor eIF2 gamma, C-terminal / Initiation factor eIF2 gamma, C terminal / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / Ribosomal protein L7Ae, archaea / Translation elongation factor EF1A/initiation factor IF2gamma, C-terminal / S1 domain profile. / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S19e, conserved site / Ribosomal protein S19e signature. / Ribosomal protein S10, eukaryotic/archaeal / Ribosomal protein S27a / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein S27a / Ribosomal protein S27a / Ribosomal protein S17e, conserved site / Ribosomal protein S17e signature. / 40S ribosomal protein S29/30S ribosomal protein S14 type Z / Ribosomal protein S3, eukaryotic/archaeal / Ribosomal protein S19e / Ribosomal protein S3Ae, conserved site / Ribosomal protein S19e / Ribosomal protein S3Ae signature. / Ribosomal_S19e / Ribosomal protein S27e signature. / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / Ribosomal protein S19A/S15e / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Ribosomal protein S17e / Ribosomal protein S17e-like superfamily / Ribosomal S17 / Ribosomal protein S4e, N-terminal / RS4NT (NUC023) domain / Ribosomal S24e conserved site / Ribosomal protein S24e signature. / Ribosomal protein S4, KOW domain / Ribosomal protein S4e / Ribosomal protein S4e, central region / Ribosomal protein S4e, central domain superfamily / Ribosomal family S4e / Ribosomal protein S27, zinc-binding domain superfamily / Ribosomal protein S24e / Ribosomal protein S23, eukaryotic/archaeal / Ribosomal protein S24e / Ribosomal protein S6/S6e/A/B/2, conserved site / Ribosomal protein S6e signature. / Ribosomal protein S27 / Ribosomal protein S27 / Ribosomal protein S8e / Ribosomal protein S17, archaeal/eukaryotic / Ribosomal protein S3Ae / Ribosomal protein S28e conserved site / Ribosomal S3Ae family / Ribosomal protein S28e signature. / Ribosomal S3Ae family 類似検索 - ドメイン・相同性
Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS12 / Large ribosomal subunit protein eL8 / Protein translation factor SUI1 homolog / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein eS1 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS17 ...Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS12 / Large ribosomal subunit protein eL8 / Protein translation factor SUI1 homolog / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein eS1 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein eS4 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS7 / Small ribosomal subunit protein eS17 / Small ribosomal subunit protein eS28 / Small ribosomal subunit protein eS8 / Small ribosomal subunit protein eS32 / Small ribosomal subunit protein eS6 / Small ribosomal subunit protein eS24 / Small ribosomal subunit protein eS31 / Small ribosomal subunit protein eS27 / Translation initiation factor 2 subunit beta / Translation initiation factor 2 subunit alpha / Translation initiation factor 2 subunit gamma / Small ribosomal subunit protein eS19 / Translation initiation factor 1A 類似検索 - 構成要素
ジャーナル: Nat Commun / 年: 2016 タイトル: Cryo-EM study of start codon selection during archaeal translation initiation. 著者: Pierre-Damien Coureux / Christine Lazennec-Schurdevin / Auriane Monestier / Eric Larquet / Lionel Cladière / Bruno P Klaholz / Emmanuelle Schmitt / Yves Mechulam / 要旨: Eukaryotic and archaeal translation initiation complexes have a common structural core comprising e/aIF1, e/aIF1A, the ternary complex (TC, e/aIF2-GTP-Met-tRNA) and mRNA bound to the small ribosomal ...Eukaryotic and archaeal translation initiation complexes have a common structural core comprising e/aIF1, e/aIF1A, the ternary complex (TC, e/aIF2-GTP-Met-tRNA) and mRNA bound to the small ribosomal subunit. e/aIF2 plays a crucial role in this process but how this factor controls start codon selection remains unclear. Here, we present cryo-EM structures of the full archaeal 30S initiation complex showing two conformational states of the TC. In the first state, the TC is bound to the ribosome in a relaxed conformation with the tRNA oriented out of the P site. In the second state, the tRNA is accommodated within the peptidyl (P) site and the TC becomes constrained. This constraint is compensated by codon/anticodon base pairing, whereas in the absence of a start codon, aIF2 contributes to swing out the tRNA. This spring force concept highlights a mechanism of codon/anticodon probing by the initiator tRNA directly assisted by aIF2.
分子 #32: initiator Met-tRNA fMet from E. coli (A1U72 variant)
分子
名称: initiator Met-tRNA fMet from E. coli (A1U72 variant) タイプ: rna / ID: 32 詳細: tRNA model from Sulfolobus solfataricus (PDB code 3V11) used for fitting コピー数: 1
由来(天然)
生物種: Escherichia coli (大腸菌)
分子量
理論値: 24.488629 KDa
配列
文字列:
GCGGGGUGGA GCAGCCUGG(H2U) AGCUCGUCGG G(OMC)UCAUAACC CGAAGAUCGU CGG(5MU)UCAAAU CCGGCCCC C GCUACCA
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分子 #2: 30S ribosomal protein uS3
分子
名称: 30S ribosomal protein uS3 / タイプ: protein_or_peptide / ID: 2 詳細: 30S ribosomal protein uS3 model from Pyrococcus furiosus (PDB code 4V6U) used for fitting コピー数: 1 / 光学異性体: LEVO