translation initiation factor activity / ribosomal small subunit biogenesis / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex ...translation initiation factor activity / ribosomal small subunit biogenesis / small ribosomal subunit / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / rRNA binding / structural constituent of ribosome / ribosome / translation / ribonucleoprotein complex / RNA binding / zinc ion binding 類似検索 - 分子機能
Ribosomal protein S27 / Small zinc finger protein HVO_2753-like, zinc-binding pocket / Small zinc finger protein HVO_2753-like / Small zinc finger protein HVO_2753-like, Zn-binding pocket / Ribosomal protein S17, archaeal / Ribosomal protein S6e, archaeal / Ribosomal protein S4, archaeal / Ribosomal protein S12, archaea / 30S ribosomal protein S3Ae / : ...Ribosomal protein S27 / Small zinc finger protein HVO_2753-like, zinc-binding pocket / Small zinc finger protein HVO_2753-like / Small zinc finger protein HVO_2753-like, Zn-binding pocket / Ribosomal protein S17, archaeal / Ribosomal protein S6e, archaeal / Ribosomal protein S4, archaeal / Ribosomal protein S12, archaea / 30S ribosomal protein S3Ae / : / Ribosomal protein S11, archaeal / Ribosomal protein S2, archaeal / Ribosomal protein S8e, archaeal / Translation initiation factor 1A (eIF-1A), conserved site / Eukaryotic initiation factor 1A signature. / eukaryotic translation initiation factor 1A / Translation initiation factor 1A (eIF-1A) / Ribosomal Protein S8; Chain: A, domain 1 - #30 / Dna Ligase; domain 1 - #10 / Ribosomal protein S11/S14 / S15/NS1, RNA-binding / RNA-binding domain, S1, IF1 type / Translation initiation factor 1A / IF-1 / S1 domain IF1 type profile. / Glucose-6-phosphate isomerase like protein; domain 1 / Ribosomal Protein S8; Chain: A, domain 1 / N-terminal domain of TfIIb / Ribosomal Protein S5; domain 2 - #10 / Ribosomal Protein S5; domain 2 / RRM (RNA recognition motif) domain / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S3Ae, conserved site / Ribosomal protein S3Ae signature. / Ribosomal protein S2, eukaryotic/archaeal / Ribosomal protein S27e signature. / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Single Sheet / Ribosomal S24e conserved site / Ribosomal protein S24e signature. / Ribosomal protein S4e, N-terminal / RS4NT (NUC023) domain / Ribosomal protein S4, KOW domain / Ribosomal protein S4e / Ribosomal protein S4e, central region / Ribosomal protein S4e, central domain superfamily / Ribosomal family S4e / Ribosomal protein S23, eukaryotic/archaeal / Ribosomal protein S6/S6e/A/B/2, conserved site / Ribosomal protein S6e signature. / Ribosomal protein S24e / Ribosomal protein S24e / Ribosomal protein S27 / Ribosomal protein S27, zinc-binding domain superfamily / Ribosomal protein S27 / Ribosomal protein S17, archaeal/eukaryotic / Ribosomal protein S8e / Ribosomal protein S3Ae / Ribosomal S3Ae family / Ribosomal S3Ae family / Ribosomal protein S6e / Ribosomal protein S6e / Ribosomal protein S6e / Ribosomal protein S13/S15, N-terminal / Ribosomal protein S15P / Ribosomal S13/S15 N-terminal domain / Ribosomal S13/S15 N-terminal domain / Ribosomal protein S4/S9, eukaryotic/archaeal / Nucleic acid-binding proteins / Dna Ligase; domain 1 / Ribosomal protein S8e/ribosomal biogenesis NSA2 / Ribosomal protein S8e / Ribosomal protein S2 signature 2. / OB fold (Dihydrolipoamide Acetyltransferase, E2P) / Ribosomal protein S2 signature 1. / Nucleotidyltransferase; domain 5 / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / : / Ribosomal protein S2, conserved site / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / Ribosomal protein S17, conserved site / Ribosomal protein S17 signature. / Ribosomal protein S5 / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5, N-terminal / Ribosomal protein S5, C-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal domain / Ribosomal protein S8 signature. / Helix Hairpins / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S4, conserved site / Ribosomal protein S15 signature. / Ribosomal protein S4 signature. / Ribosomal protein S4/S9 N-terminal domain 類似検索 - ドメイン・相同性
RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Zn-ribbon RNA-binding protein involved in translation / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein eS32 / Small ribosomal subunit protein eS27 ...RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Zn-ribbon RNA-binding protein involved in translation / Small ribosomal subunit protein uS4 / Small ribosomal subunit protein uS12 / Small ribosomal subunit protein uS11 / Small ribosomal subunit protein eS32 / Small ribosomal subunit protein eS27 / Small ribosomal subunit protein eS24 / Small ribosomal subunit protein eS6 / Small ribosomal subunit protein eS8 / Translation initiation factor 1A / Small ribosomal subunit protein uS2 / Small ribosomal subunit protein uS17 / Small ribosomal subunit protein eS4 / Small ribosomal subunit protein uS8 / Small ribosomal subunit protein uS5 / Small ribosomal subunit protein eS1 / Small ribosomal subunit protein uS15 類似検索 - 構成要素
ジャーナル: Commun Biol / 年: 2020 タイトル: Cryo-EM study of an archaeal 30S initiation complex gives insights into evolution of translation initiation. 著者: Pierre-Damien Coureux / Christine Lazennec-Schurdevin / Sophie Bourcier / Yves Mechulam / Emmanuelle Schmitt / 要旨: Archaeal translation initiation occurs within a macromolecular complex containing the small ribosomal subunit (30S) bound to mRNA, initiation factors aIF1, aIF1A and the ternary complex aIF2:GDPNP: ...Archaeal translation initiation occurs within a macromolecular complex containing the small ribosomal subunit (30S) bound to mRNA, initiation factors aIF1, aIF1A and the ternary complex aIF2:GDPNP:Met-tRNA. Here, we determine the cryo-EM structure of a 30S:mRNA:aIF1A:aIF2:GTP:Met-tRNA complex from Pyrococcus abyssi at 3.2 Å resolution. It highlights archaeal features in ribosomal proteins and rRNA modifications. We find an aS21 protein, at the location of eS21 in eukaryotic ribosomes. Moreover, we identify an N-terminal extension of archaeal eL41 contacting the P site. We characterize 34 N-acetylcytidines distributed throughout 16S rRNA, likely contributing to hyperthermostability. Without aIF1, the 30S head is stabilized and initiator tRNA is tightly bound to the P site. A network of interactions involving tRNA, mRNA, rRNA modified nucleotides and C-terminal tails of uS9, uS13 and uS19 is observed. Universal features and domain-specific idiosyncrasies of translation initiation are discussed in light of ribosomal structures from representatives of each domain of life.
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