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| <SX load='5tzs' size='340' side='right' viewer='molstar' caption='[[5tzs]], [[Resolution|resolution]] 5.10Å' scene=''> | | <SX load='5tzs' size='340' side='right' viewer='molstar' caption='[[5tzs]], [[Resolution|resolution]] 5.10Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
- | <table><tr><td colspan='2'>[[5tzs]] is a 57 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_s288c Saccharomyces cerevisiae s288c]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TZS OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5TZS FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5tzs]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TZS OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TZS FirstGlance]. <br> |
- | </td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=N:ANY+5-MONOPHOSPHATE+NUCLEOTIDE'>N</scene>, <scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 5.1Å</td></tr> |
- | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/rRNA_small_subunit_pseudouridine_methyltransferase_Nep1 rRNA small subunit pseudouridine methyltransferase Nep1], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.260 2.1.1.260] </span></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=N:ANY+5-MONOPHOSPHATE+NUCLEOTIDE'>N</scene></td></tr> |
- | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5tzs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tzs OCA], [http://pdbe.org/5tzs PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5tzs RCSB], [http://www.ebi.ac.uk/pdbsum/5tzs PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5tzs ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5tzs FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tzs OCA], [https://pdbe.org/5tzs PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5tzs RCSB], [https://www.ebi.ac.uk/pdbsum/5tzs PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5tzs ProSAT]</span></td></tr> |
| </table> | | </table> |
| == Function == | | == Function == |
- | [[http://www.uniprot.org/uniprot/RS7A_YEAST RS7A_YEAST]] Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly.<ref>PMID:15590835</ref> [[http://www.uniprot.org/uniprot/UTP21_YEAST UTP21_YEAST]] Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly.<ref>PMID:15590835</ref> [[http://www.uniprot.org/uniprot/RCL1_YEAST RCL1_YEAST]] Does not have cyclase activity. Plays a role in 40S-ribosomal-subunit biogenesis in the early pre-rRNA processing steps at sites A0, A1 and A2 that are required for proper maturation of the 18S RNA. Essential for viability. [[http://www.uniprot.org/uniprot/NEP1_YEAST NEP1_YEAST]] S-adenosyl-L-methionine-dependent pseudouridine N(1)-methyltransferase that methylates pseudouridine at position 1189 (Psi1189) in 18S rRNA. Involved the biosynthesis of the hypermodified N1-methyl-N3-(3-amino-3-carboxypropyl) pseudouridine (m1acp3-Psi) conserved in eukaryotic 18S rRNA. N1-methylation is independent on acp-modification at the N3-position of U1191. Has also an essential role in 40S ribosomal subunit biogenesis independent on its methyltransferase activity, facilitating the incorporation of ribosomal protein S19 (RPS19A/RPS19B) during the formation of pre-ribosomes.<ref>PMID:11694595</ref> <ref>PMID:11935223</ref> <ref>PMID:15590835</ref> <ref>PMID:20972225</ref> <ref>PMID:21087996</ref> [[http://www.uniprot.org/uniprot/RRP9_YEAST RRP9_YEAST]] Involved in nucleolar processing of pre-18S ribosomal RNA. Required for efficient pre-rRNA cleavage at sites A0, A1 and A2, and biosynthesis of 18S rRNA.<ref>PMID:11105764</ref> [[http://www.uniprot.org/uniprot/RS9A_YEAST RS9A_YEAST]] Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly.<ref>PMID:15590835</ref> [[http://www.uniprot.org/uniprot/SNU13_YEAST SNU13_YEAST]] Common component of the spliceosome and rRNA processing machinery. In association with the spliceosomal U4/U6.U5 tri-snRNP particle, required for splicing of pre-mRNA. In association with box C/D snoRNPs, required for processing of pre-ribosomal RNA (rRNA) and site-specific 2'-O-methylation of substrate RNAs. Essential for the accumulation and stability of U4 snRNA, U6 snRNA, and box C/D snoRNAs.<ref>PMID:11081632</ref> <ref>PMID:12215523</ref> <ref>PMID:14730029</ref> [[http://www.uniprot.org/uniprot/RS6A_YEAST RS6A_YEAST]] Involved in nucleolar processing of pre-18S ribosomal RNA and ribosome assembly.<ref>PMID:15590835</ref> | + | [https://www.uniprot.org/uniprot/RS4A_YEAST RS4A_YEAST] |
- | <div style="background-color:#fffaf0;">
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- | == Publication Abstract from PubMed ==
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- | The small subunit (SSU) processome, a large ribonucleoprotein particle, organizes the assembly of the eukaryotic small ribosomal subunit by coordinating the folding, cleavage, and modification of nascent pre-ribosomal RNA (rRNA). Here, we present the cryo-electron microscopy structure of the yeast SSU processome at 5.1-angstrom resolution. The structure reveals how large ribosome biogenesis complexes assist the 5' external transcribed spacer and U3 small nucleolar RNA in providing an intertwined RNA-protein assembly platform for the separate maturation of 18S rRNA domains. The strategic placement of a molecular motor at the center of the particle further suggests a mechanism for mediating conformational changes within this giant particle. This study provides a structural framework for a mechanistic understanding of eukaryotic ribosome assembly in the model organism Saccharomyces cerevisiae.
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- | Architecture of the yeast small subunit processome.,Chaker-Margot M, Barandun J, Hunziker M, Klinge S Science. 2017 Jan 13;355(6321). pii: eaal1880. doi: 10.1126/science.aal1880. Epub, 2016 Dec 15. PMID:27980088<ref>PMID:27980088</ref>
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- | | + | |
- | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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- | </div>
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- | <div class="pdbe-citations 5tzs" style="background-color:#fffaf0;"></div>
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| ==See Also== | | ==See Also== |
| *[[Ribosome 3D structures|Ribosome 3D structures]] | | *[[Ribosome 3D structures|Ribosome 3D structures]] |
- | *[[Ribosome biogenesis protein|Ribosome biogenesis protein]] | |
- | == References == | |
- | <references/> | |
| __TOC__ | | __TOC__ |
| </SX> | | </SX> |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
- | [[Category: Saccharomyces cerevisiae s288c]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
- | [[Category: RRNA small subunit pseudouridine methyltransferase Nep1]]
| + | [[Category: Barandun J]] |
- | [[Category: Barandun, J]] | + | [[Category: Chaker-Margot M]] |
- | [[Category: Chaker-Margot, M]] | + | [[Category: Hunziker M]] |
- | [[Category: Hunziker, M]] | + | [[Category: Klinge S]] |
- | [[Category: Klinge, S]] | + | |
- | [[Category: Ribosome assembly]]
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- | [[Category: Translation]]
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