plastid / 90S preribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / small-subunit processome / rRNA processing / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation ...plastid / 90S preribosome / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / small-subunit processome / rRNA processing / ribosomal small subunit biogenesis / ribosomal small subunit assembly / small ribosomal subunit rRNA binding / cytosolic small ribosomal subunit / cytoplasmic translation / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / mRNA binding / nucleolus / RNA binding / metal ion binding / cytosol Similarity search - Function
: / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S5, eukaryotic/archaeal ...: / Ribosomal protein S26e signature. / Ribosomal protein L41 / Ribosomal protein L41 / Ribosomal protein S26e / Ribosomal protein S26e superfamily / Ribosomal protein S26e / Ribosomal protein S21e, conserved site / Ribosomal protein S21e signature. / Ribosomal protein S5, eukaryotic/archaeal / Ribosomal protein S2, eukaryotic / Ribosomal protein S21e / Ribosomal protein S21e superfamily / Ribosomal protein S21e / Ribosomal protein S2, eukaryotic/archaeal / : / Ribosomal protein S30 / Ribosomal protein S30 / Ribosomal protein S7e signature. / Ribosomal protein S3Ae, conserved site / Ribosomal protein S3Ae signature. / Ribosomal protein S27e signature. / Ribosomal protein S4e, N-terminal, conserved site / Ribosomal protein S4e signature. / 40S ribosomal protein S4, C-terminal domain / 40S ribosomal protein S4 C-terminus / Ribosomal protein S8e, conserved site / Ribosomal protein S8e signature. / Ribosomal protein S17e / Ribosomal protein S17e-like superfamily / Ribosomal S17 / Ribosomal protein S6, eukaryotic / 40S ribosomal protein S1/3, eukaryotes / Ribosomal protein S4e, N-terminal / RS4NT (NUC023) domain / Ribosomal S24e conserved site / Ribosomal protein S24e signature. / 40S ribosomal protein S11, N-terminal / Ribosomal_S17 N-terminal / Ribosomal protein S7e / Ribosomal protein S7e / 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 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 / Ribosomal protein S8e/ribosomal biogenesis NSA2 / Ribosomal protein S8e / Ribosomal protein S2 signature 2. / : / Ribosomal protein S2, conserved site / Ribosomal protein S5, N-terminal, conserved site / Ribosomal protein S5 signature. / Ribosomal protein S2 / Ribosomal protein S2, flavodoxin-like domain superfamily / Ribosomal protein S2 / Ribosomal protein S17, conserved site / Ribosomal protein S17 signature. / S5 double stranded RNA-binding domain profile. / Ribosomal protein S5 / Ribosomal protein S5, N-terminal / Ribosomal protein S5, N-terminal domain / Ribosomal protein S5, C-terminal / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S5, C-terminal domain / Ribosomal protein S8 signature. / Ribosomal protein S4/S9 N-terminal domain / Ribosomal protein S4/S9, N-terminal / Ribosomal protein S4, conserved site / Ribosomal protein S4 signature. / Ribosomal protein S15 signature. / Ribosomal protein S4/S9 / Ribosomal protein S8 / Ribosomal protein S8 superfamily / Ribosomal protein S8 / S4 RNA-binding domain profile. / Ribosomal S11, conserved site / Ribosomal protein S11 signature. / Ribosomal protein S11 Similarity search - Domain/homology
40S ribosomal protein S4 / 40S ribosomal protein S8 / 40S ribosomal protein S27 / 40S ribosomal protein S17 / Small ribosomal subunit protein eS1 / 40S ribosomal protein S26 / S5 DRBM domain-containing protein / 40S ribosomal protein S24 / 40S ribosomal protein S30 / 30S ribosomal protein S11, chloroplastic ...40S ribosomal protein S4 / 40S ribosomal protein S8 / 40S ribosomal protein S27 / 40S ribosomal protein S17 / Small ribosomal subunit protein eS1 / 40S ribosomal protein S26 / S5 DRBM domain-containing protein / 40S ribosomal protein S24 / 40S ribosomal protein S30 / 30S ribosomal protein S11, chloroplastic / Genome assembly, chromosome: II / Small ribosomal subunit protein uS8c / Large ribosomal subunit protein eL41z/eL41y/eL41x/eL41w/eL41v / 40S ribosomal protein S7 / Small ribosomal subunit protein uS17 N-terminal domain-containing protein / 40S ribosomal protein S6 / Small ribosomal subunit protein uS2 / 30S ribosomal protein S4, chloroplastic / 40S ribosomal protein S23 / Small ribosomal subunit protein uS15 N-terminal domain-containing protein Similarity search - Component
Biological species
Triticum aestivum (bread wheat)
Method
single particle reconstruction / cryo EM / Resolution: 2.34 Å
Journal: Int J Mol Sci / Year: 2023 Title: High-Resolution Structure and Internal Mobility of a Plant 40S Ribosomal Subunit. Authors: Olesya V Kravchenko / Timur N Baymukhametov / Zhanna A Afonina / Konstantin S Vassilenko / Abstract: Ribosome is a major part of the protein synthesis machinery, and analysis of its structure is of paramount importance. However, the structure of ribosomes from only a limited number of organisms has ...Ribosome is a major part of the protein synthesis machinery, and analysis of its structure is of paramount importance. However, the structure of ribosomes from only a limited number of organisms has been resolved to date; it especially concerns plant ribosomes and ribosomal subunits. Here, we report a high-resolution cryo-electron microscopy reconstruction of the small subunit of the (common wheat) cytoplasmic ribosome. A detailed atomic model was built that includes the majority of the rRNA and some of the protein modifications. The analysis of the obtained data revealed structural peculiarities of the 40S subunit in the monocot plant ribosome. We applied the 3D Flexible Refinement approach to analyze the internal mobility of the 40S subunit and succeeded in decomposing it into four major motions, describing rotations of the head domain and a shift in the massive rRNA expansion segment. It was shown that these motions are almost uncorrelated and that the 40S subunit is flexible enough to spontaneously adopt any conformation it takes as a part of a translating ribosome or ribosomal complex. Here, we introduce the first high-resolution structure of an isolated plant 40S subunit and the first quantitative analysis of the flexibility of small ribosomal subunits, hoping that it will help in studying various aspects of ribosome functioning.
Macromolecule #4: 30S ribosomal protein S11, chloroplastic
Macromolecule
Name: 30S ribosomal protein S11, chloroplastic / type: protein_or_peptide / ID: 4 Details: IAS - BETA-L-ASPARTIC ACID post-translational modification in the protein Number of copies: 1 / Enantiomer: LEVO
Macromolecule #17: Small ribosomal subunit protein uS17 N-terminal domain-containing...
Macromolecule
Name: Small ribosomal subunit protein uS17 N-terminal domain-containing protein type: protein_or_peptide / ID: 17 / Number of copies: 1 / Enantiomer: LEVO
UniProtKB: Small ribosomal subunit protein uS17 N-terminal domain-containing protein
+
Macromolecule #18: Small ribosomal subunit protein uS15 N-terminal domain-containing...
Macromolecule
Name: Small ribosomal subunit protein uS15 N-terminal domain-containing protein type: protein_or_peptide / ID: 18 / Number of copies: 1 / Enantiomer: LEVO
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