Ribosomal protein S21

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{{STRUCTURE_3kc4| PDB=3kc4 | SIZE=400| SCENE=Ribosomal_protein_S21/Cv/1 |right|CAPTION=Ribosomal protein S21 from ''Escherichia coli'' [[3kc4]], chain U }}
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<StructureSection load='4v7i' size='350' side='right' caption="Ribosomal protein S21 from Escherichia coli [[4v7i]]' scene='42/424003/Cv/3'>
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[[Ribosomal protein S21]] (RPS21) is one of the 21 proteins which belong to the 30S small subunit of the [http://en.wikipedia.org/wiki/Bacteria bacterial] [[ribosome]] or the 30 proteins which belong to the 40S small subunit of the eukaryotic ribosome. It is found only in eubacteria, plant chloroplasts and mammalian mitochondria. It is involved in the initiation of polypeptide synthesis<ref>PMID:7028483</ref>.
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[[Ribosomal protein S21]] (RPS21) is one of the 22 proteins which belong to the <scene name='Ribosomal_protein_S21/Cv/2'>small subunit</scene> of the [http://en.wikipedia.org/wiki/Bacteria bacterial] [[ribosome]]. It is found only in eubacteria, plant chloroplasts and mammalian mitochondria. It is involved in the initiation of polypeptide synthesis. The images at the left and at the right correspond to one representative RPS21, ''i.e.'' the crystal structure of Ribosomal protein S21 from ''Escherichia coli'' ([[3kc4]], chain U).
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== References ==
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<references/>
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{{TOC limit|limit=2}}
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== 3D Structures of Ribosomal protein S21 ==
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Updated on {{REVISIONDAY2}}-{{MONTHNAME|{{REVISIONMONTH}}}}-{{REVISIONYEAR}}
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=== S21 in small ribosomal subunit ===
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[[3kc4]] – EcRPS21 in 30S ribosomal subunit – ''Escherichia coli''<br />
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[[3i1m]], [[3i1o]], [[3df1]], [[3df3]], [[2vho]], [[2vhp]], [[2avy]], [[2aw7]], [[3ofa]], [[3ofb]], [[3ofx]], [[3ofy]], [[3ofo]], [[3ofp]], [[3or9]], [[3ora]] - EcRPS21 in 30S ribosomal subunit+16S RRNA<br />
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[[3bbn]] - RPS21 in 30S ribosomal subunit+16S RRNA – Cryo-EM – spinach<br />
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===S21 in small ribosomal subunit+ chain release factor===
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[[3uoq]] – EcRPS21 + 16S RRNA + mRNA + chain release factor 3
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=== S21 in small ribosomal subunit+tRNA+mRNA ===
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[[2i2p]], [[2i2u]] - EcRPS21 in 30S ribosomal subunit+16S RRNA+tRNA Phe+mRNA<br />
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[[3j0u]], [[3j0v]], [[3j0x]], [[3j0z]], [[3j10]] – EcRPS21 in 30S ribosomal subunit+ A-site tRNA + P-site tRNA +16S RRNA+mRNA – Cryo-EM<br />
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[[3j13]] – EcRPS21 in 30S ribosomal subunit+ P-site tRNA +16S RRNA+mRNA – Cryo-EM<br />
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=== S21 in small ribosomal subunit+P-site tRNA ===
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[[2wwl]] - EcRPS21 in 30S ribosomal subunit+Poly-Ala chain+P-site tRNA+mRNA +16S RRNA - ''Escherichia coli''<br />
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[[3i1q]] - EcRPS21 in 30S ribosomal subunit+P-site tRNA hairpin+mRNA <br />
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[[3i1s]], [[3i1z]], [[3i21]] - EcRPS21 in 30S ribosomal subunit+P-site tRNA hairpin+mRNA +16S RNA<br />
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=== S21 in small ribosomal subunit+A-site tRNA+P-site tRNA+E-site tRNA ===
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[[3e1a]], [[3e1c]] - EcRPS21 in 30S ribosomal subunit+P-site tRNA+A-site tRNA+E-site tRNA+mRNA +16S RRNA<br />
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=== S21 in small ribosomal subunit + antibiotics ===
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[[2qbb]], [[2qb9]], [[1vs5]], [[1vs7]], [[2qan]], [[2qal]], [[2qou]], [[2qow]], [[2qoy]], [[2qp0]], [[2z4k]], [[2z4m]], [[3oaq]], [[3oar]] - EcRPS21 in 30S ribosomal subunit+16S RRNA+ antibiotic<br />
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[[3sfs]] – EcRPS21 in 30S ribosomal subunit+16S RRNA+ mRNA + RF-3 + antibiotic<br />
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[[4gaq]], [[4gas]] – EcRPS21 in 30S ribosomal subunit+16S RRNA+ mRNA + antibiotic<br />
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=== S21 in small ribosomal subunit + ribosome recycling factor ===
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[[2qbd]], [[2qbf]] – EcRPS21 in 30S ribosomal subunit+16S RRNA+ribosome recycling factor<br />
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[[3r8n]], [[3r8o]], [[4gd1]], [[4gd2]] – EcRPS21 in 30S ribosomal subunit+16S RRNA+ribosome recycling factor + mRNA + tRNA<br />
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[[2qbh]], [[2qbj]] - EcRPS21 in 30S ribosomal subunit+16S RRNA+ribosome recycling factor+gentamicin<br />
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=== S21 in small ribosomal subunit + elongation factor (EF)===
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[[3fih]] - EcRPS21 in 30S ribosomal subunit+A-site tRNA Phe+P-site tRNA+mRNA +16S RRNA+elongation factor TU<br />
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[[3izv]] – EcRPS21 in 30S ribosomal subunit+A/T-site tRNA Phe +16S RRNA+elongation factor TU<br />
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[[3j18]] – EcRPS21 in 30S ribosomal subunit+A/T-site tRNA Phe +16S RRNA+ mRNA + SSRA-binding protein + formyl-Met specific initiator tRNA + elongation factor G – Cryo-EM<br />
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[[3izw]] – EcRPS21 in 30S ribosomal subunit+A-site tRNA Phe +mRNA +16S RRNA+elongation factor TU<br />
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[[4kiy]], [[4kj0]], [[4kj2]], [[4kj4]], [[4kj6]], [[4kj8]], [[4kja]], [[4kjc]] - EcRPS21 in 30S ribosomal subunit +16S RRNA + viomycin + EF-G<br />
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===S21 in small ribosomal subunit + various proteins===
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[[3j00]] – EcRPS21 in 30S ribosomal subunit + 16S RRNA + mRNA + FTSQ + apolipoprotein A-I - Cryo EM<br />
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[[2ykr]] – EcRPS21 + 16S RRNA + GMPPNP + GTPase RSGA<br />
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[[4a2i]] – EcRPS21 + 16S RRNA + GTPase RSGA – Cryo EM<br />
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[[4adv]] - EcRPS21 + 16S RRNA + methyltransferase – Cryo EM<br />
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[[4a2i]] – EcRPS21 + 16S RRNA + GTPase RSGA – Cryo EM<br />
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[[3j36]] - EcRPS21 in 30S ribosomal subunit+ tetracycline resistance protein +16S RRNA + mRNA + P-tRNA – Cryo-EM<br />
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===S21 in small 40S ribosomal subunit + various proteins===
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[[3iz6]] – RPS21 in 40S ribosomal subunit+ RACK1 – yeast - Cryo-EM<br />
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[[3u5c]], [[3u5g]] - yRPS21 in 40S ribosomal subunit+ RACK1 + suppressor protein SMT1<br />
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[[1s1h]] - yRPS21 in 40S ribosomal subunit+18S RRNA+elongation factor 2 – Cryo-EM <br />
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[[3izb]]– yRPS21 in 40S ribosomal subunit +RACK1 – Cryo EM<br />
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[[3j38]] - RPS21 in 40S ribosomal subunit + EF-2 + guanine nucleotide-binding protein – ''Drosophila melanogaster'' – Cryo-EM<br />
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[[3j3a]] - RPS21 in 40S ribosomal subunit + EF-2 + guanine nucleotide-binding protein – human – Cryo-EM<br />
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[[4kzx]] - rRPS21 in 40S ribosomal subunit+ RACK1 + EIF1 – rabbit – Cryo-EM<br />
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[[4kzy]] - rRPS21 in 40S ribosomal subunit+ RACK1 + EIF1 + EIF1A – Cryo-EM<br />
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[[4kzz]] - rRPS21 in 40S ribosomal subunit+ RACK1 + EIF1A + initiator tRNA – Cryo-EM<br />
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</StructureSection>
[[Category:Topic Page]]
[[Category:Topic Page]]

Current revision

PDB ID 4v7i

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Michal Harel, Joel L. Sussman, Alexander Berchansky, Jaime Prilusky

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