- EMDB-3495: Structure of the 30S Pre-Initiation Complex 2 (30S IC-2) Stalled ... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-3495
タイトル
Structure of the 30S Pre-Initiation Complex 2 (30S IC-2) Stalled by GE81112
マップデータ
試料
複合体: 30S Pre-Initiation Complex IC-2 Stalled by GE81112
RNA: x 2種
タンパク質・ペプチド: x 24種
リガンド: x 1種
キーワード
Ribosome (リボソーム) / Initiation of Translation
機能・相同性
機能・相同性情報
ribosome disassembly / guanosine tetraphosphate binding / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / ribosomal small subunit binding / misfolded RNA binding / transcription antitermination factor activity, RNA binding / Group I intron splicing / RNA folding / chaperone-mediated protein folding ...ribosome disassembly / guanosine tetraphosphate binding / mRNA base-pairing translational repressor activity / ornithine decarboxylase inhibitor activity / ribosomal small subunit binding / misfolded RNA binding / transcription antitermination factor activity, RNA binding / Group I intron splicing / RNA folding / chaperone-mediated protein folding / negative regulation of translational initiation / translational initiation / regulation of mRNA stability / translation initiation factor activity / response to cold / mRNA regulatory element binding translation repressor activity / positive regulation of RNA splicing / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / maintenance of translational fidelity / DNA-templated transcription termination / mRNA 5'-UTR binding / ribosomal small subunit biogenesis / small ribosomal subunit rRNA binding / ribosomal small subunit assembly / cytosolic small ribosomal subunit / ribosome binding / リボソーム生合成 / regulation of translation / cytoplasmic translation / small ribosomal subunit / tRNA binding / negative regulation of translation / rRNA binding / molecular adaptor activity / リボソーム / structural constituent of ribosome / 翻訳 (生物学) / response to antibiotic / mRNA binding / GTPase activity / GTP binding / RNA binding / zinc ion binding / 生体膜 / 細胞質基質 / 細胞質 類似検索 - 分子機能
Translation initiation factor 3, conserved site / Initiation factor 3 signature. / Initiation factor 2 associated domain, bacterial / Bacterial translation initiation factor IF-2 associated region / Translation initiation factor IF-1 / Translation initiation factor 3, C-terminal / Translation initiation factor IF-3, C-terminal domain / Translation initiation factor IF-2, N-terminal / Translation initiation factor IF-2, N-terminal region / Translation initiation factor 3 ...Translation initiation factor 3, conserved site / Initiation factor 3 signature. / Initiation factor 2 associated domain, bacterial / Bacterial translation initiation factor IF-2 associated region / Translation initiation factor IF-1 / Translation initiation factor 3, C-terminal / Translation initiation factor IF-3, C-terminal domain / Translation initiation factor IF-2, N-terminal / Translation initiation factor IF-2, N-terminal region / Translation initiation factor 3 / Translation initiation factor 3, N-terminal / Translation initiation factor 3 (IF-3), N-terminal domain superfamily / Translation initiation factor 3 (IF-3), C-terminal domain superfamily / Translation initiation factor IF-3, N-terminal domain / Translation initiation factor IF-2, domain II / Initiation factor 2 signature. / Translation initiation factor IF-2, bacterial-like / Translation initiation factor IF- 2, domain 3 / Translation-initiation factor 2 / Translation initiation factor IF- 2 / Translation initiation factor IF-2, domain 3 superfamily / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / Putative DNA-binding domain superfamily / Translation elongation factor EFTu-like, domain 2 / Ribosomal protein S21, conserved site / Ribosomal protein S21 signature. / Elongation factor Tu domain 2 / Ribosomal protein S14, bacterial/plastid / Ribosomal protein S21 superfamily / Ribosomal protein S21 / Ribosomal protein S16, conserved site / Ribosomal protein S16 signature. / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / Ribosomal protein S21 / Ribosomal protein S3, bacterial-type / Ribosomal protein S6, conserved site / Ribosomal protein S6 signature. / Ribosomal protein S19, bacterial-type / Ribosomal protein S7, bacterial/organellar-type / Ribosomal protein S11, bacterial-type / Ribosomal protein S13, bacterial-type / Ribosomal protein S20 / Ribosomal protein S20 superfamily / Ribosomal protein S20 / Ribosomal protein S9, bacterial/plastid / Ribosomal protein S4, bacterial-type / 30S ribosomal protein S17 / Ribosomal protein S5, bacterial-type / Ribosomal protein S6, plastid/chloroplast / Ribosomal protein S2, bacteria/mitochondria/plastid / Ribosomal protein S18, conserved site / Ribosomal protein S18 signature. / Ribosomal protein S16 / Ribosomal protein S16 / Ribosomal protein S16 domain superfamily / Ribosomal protein S15, bacterial-type / Ribosomal protein S2 signature 2. / Ribosomal protein S6 / Ribosomal protein S6 / Ribosomal protein S6 superfamily / Ribosomal protein S12, bacterial-type / Translation elongation factor EF1B/ribosomal protein S6 / Ribosomal protein S18 / Ribosomal protein S18 / Ribosomal protein S18 superfamily / KHドメイン / K homology RNA-binding domain / Ribosomal protein S3, conserved site / Ribosomal protein S14, conserved site / Ribosomal protein S10, conserved site / : / K Homology domain, type 2 / Ribosomal protein S3, C-terminal / Ribosomal protein S3, C-terminal domain superfamily / Ribosomal protein S15/S19, conserved site / KHドメイン / Ribosomal protein S19/S15 / Ribosomal protein S19/S15, superfamily / Ribosomal protein S10 / Ribosomal protein S3, C-terminal domain / Ribosomal protein S3 signature. / Ribosomal protein S10 signature. / Ribosomal protein S14 signature. / Ribosomal protein S7, conserved site / Ribosomal protein S17, conserved site / K homology domain superfamily, prokaryotic type / Ribosomal protein S19 / Ribosomal protein S2 signature 1. / Ribosomal protein S2, conserved site / Ribosomal protein S13, conserved site / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S13 / 30s ribosomal protein S13, C-terminal / Ribosomal protein S2 / Ribosomal protein S4/S9 N-terminal domain 類似検索 - ドメイン・相同性
30S ribosomal protein S16 / Translation initiation factor IF-3 / 30S ribosomal protein S16 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Translation initiation factor IF-3 / Translation initiation factor IF-2 / Translation initiation factor IF-3 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS11 ...30S ribosomal protein S16 / Translation initiation factor IF-3 / 30S ribosomal protein S16 / Small ribosomal subunit protein bS6 / Small ribosomal subunit protein uS7 / Translation initiation factor IF-3 / Translation initiation factor IF-2 / Translation initiation factor IF-3 / Small ribosomal subunit protein uS10 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS13 / Small ribosomal subunit protein bS18 / Small ribosomal subunit protein uS19 / Small ribosomal subunit protein bS20 / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS3 / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS9 / Small ribosomal subunit protein uS15 / Small ribosomal subunit protein uS14 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein bS21 / Translation initiation factor IF-1 類似検索 - 構成要素
ジャーナル: Nucleic Acids Res / 年: 2017 タイトル: Structure of a 30S pre-initiation complex stalled by GE81112 reveals structural parallels in bacterial and eukaryotic protein synthesis initiation pathways. 著者: Jorge P López-Alonso / Attilio Fabbretti / Tatsuya Kaminishi / Idoia Iturrioz / Letizia Brandi / David Gil-Carton / Claudio O Gualerzi / Paola Fucini / Sean R Connell / 要旨: In bacteria, the start site and the reading frame of the messenger RNA are selected by the small ribosomal subunit (30S) when the start codon, typically an AUG, is decoded in the P-site by the ...In bacteria, the start site and the reading frame of the messenger RNA are selected by the small ribosomal subunit (30S) when the start codon, typically an AUG, is decoded in the P-site by the initiator tRNA in a process guided and controlled by three initiation factors. This process can be efficiently inhibited by GE81112, a natural tetrapeptide antibiotic that is highly specific toward bacteria. Here GE81112 was used to stabilize the 30S pre-initiation complex and obtain its structure by cryo-electron microscopy. The results obtained reveal the occurrence of changes in both the ribosome conformation and initiator tRNA position that may play a critical role in controlling translational fidelity. Furthermore, the structure highlights similarities with the early steps of initiation in eukaryotes suggesting that shared structural features guide initiation in all kingdoms of life.
chain_id: A, residue_range: 3-78, source_name: PDB, initial_model_type: experimental model
詳細
The fitting of the model to the EM volume was performed through rigid body fitting. The head and the body of the 30S were treated as independent bodies. Due to the low resolution of the volume, the conformation of the linking bases was not minimized. In addition, some of the clashes of the model are produced by flexible loops or protein side chains that were not refined.
精密化
プロトコル: RIGID BODY FIT
得られたモデル
PDB-5me1: Structure of the 30S Pre-Initiation Complex 2 (30S IC-2) Stalled by GE81112