|
|
| Line 3: |
Line 3: |
| | <SX load='6c0f' size='340' side='right' viewer='molstar' caption='[[6c0f]], [[Resolution|resolution]] 3.70Å' scene=''> | | <SX load='6c0f' size='340' side='right' viewer='molstar' caption='[[6c0f]], [[Resolution|resolution]] 3.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6c0f]] is a 43 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_by4741 Saccharomyces cerevisiae by4741]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6C0F OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6C0F FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6c0f]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_BY4741 Saccharomyces cerevisiae BY4741]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6C0F OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6C0F FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</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]] 3.7Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/RNA_helicase RNA helicase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.4.13 3.6.4.13] </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=6c0f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6c0f OCA], [https://pdbe.org/6c0f PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6c0f RCSB], [https://www.ebi.ac.uk/pdbsum/6c0f PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6c0f ProSAT]</span></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=6c0f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6c0f OCA], [http://pdbe.org/6c0f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6c0f RCSB], [http://www.ebi.ac.uk/pdbsum/6c0f PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6c0f ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PESC_YEAST PESC_YEAST]] Component of the NOP7 complex, which is required for maturation of the 25S and 5.8S ribosomal RNAs and formation of the 60S ribosome.[HAMAP-Rule:MF_03028]<ref>PMID:11911362</ref> <ref>PMID:12022229</ref> <ref>PMID:12110181</ref> <ref>PMID:18448671</ref> [[http://www.uniprot.org/uniprot/NOG1_YEAST NOG1_YEAST]] Involved in the biogenesis of the 60S ribosomal subunit.<ref>PMID:12808088</ref> [[http://www.uniprot.org/uniprot/MAK16_YEAST MAK16_YEAST]] Its role might be as part of the apparatus concerned with the nuclear events of the cell cycle.<ref>PMID:3045810</ref> [[http://www.uniprot.org/uniprot/RL37A_YEAST RL37A_YEAST]] Binds to the 23S rRNA (By similarity). [[http://www.uniprot.org/uniprot/SSF1_YEAST SSF1_YEAST]] Required for biogenesis of the 60S ribosomal subunit.<ref>PMID:11864607</ref> <ref>PMID:12702244</ref> [[http://www.uniprot.org/uniprot/RRP14_YEAST RRP14_YEAST]] Involved in ribosome biogenesis and cell polarity. Required for the synthesis of both 40S and 60S ribosomal subunits and may also play some direct role in correct positioning of the mitotic spindle during mitosis.<ref>PMID:16544271</ref> <ref>PMID:17272295</ref> <ref>PMID:17804645</ref> [[http://www.uniprot.org/uniprot/HAS1_YEAST HAS1_YEAST]] ATP-dependent RNA helicase involved in 40S ribosomal subunit biogenesis. Required for the processing and cleavage of 35S pre-rRNA at sites A0, A1, and A2, leading to mature 18S rRNA.<ref>PMID:15049817</ref> <ref>PMID:15242642</ref> <ref>PMID:15718299</ref> [[http://www.uniprot.org/uniprot/RPF1_YEAST RPF1_YEAST]] Essential protein. Required for biogenesis of the 60S ribosomal subunit.<ref>PMID:11864606</ref> <ref>PMID:12702244</ref> [[http://www.uniprot.org/uniprot/IF6_YEAST IF6_YEAST]] Binds to the 60S ribosomal subunit and prevents its association with the 40S ribosomal subunit to form the 80S initiation complex in the cytoplasm. Is also involved in ribosome biogenesis. Associates with pre-60S subunits in the nucleus and is involved in its nuclear export. Cytoplasmic release of TIF6 from 60S subunits and nuclear relocalization is promoted by the GTPase RIA1/EFL1 and by SDO1. Also required for pre-rRNA processing.<ref>PMID:10085284</ref> <ref>PMID:11779510</ref> <ref>PMID:11238882</ref> <ref>PMID:17353896</ref> <ref>PMID:18256024</ref> <ref>PMID:11101899</ref> [[http://www.uniprot.org/uniprot/NOP16_YEAST NOP16_YEAST]] Involved in the biogenesis of the 60S ribosomal subunit.<ref>PMID:11583614</ref> [[http://www.uniprot.org/uniprot/RL4A_YEAST RL4A_YEAST]] Participates in the regulation of the accumulation of its own mRNA.<ref>PMID:2065661</ref> [[http://www.uniprot.org/uniprot/RLP24_YEAST RLP24_YEAST]] Involved in the biogenesis of the 60S ribosomal subunit. Ensures the docking of NOG1 to pre-60S particles.<ref>PMID:12808088</ref> [[http://www.uniprot.org/uniprot/RRP15_YEAST RRP15_YEAST]] Constituent of pre-60S ribosomal particles. Required for large subunit rRNA maturation, in particular processing of the 27S pre-rRNA at the A3 and B1 sites to yield 5.8S and 25S rRNA.<ref>PMID:15769876</ref> [[http://www.uniprot.org/uniprot/CIC1_YEAST CIC1_YEAST]] An adapter protein that specifically links the 26S proteasome to its substrate CDC4 which is one of the substrate recognition subunits of the SCF E3 ubiquitin ligase complex. Required for turnover of cell cycle regulatory proteins CDC4 and GRR1. Required for synthesis and nuclear export of 60S ribosomal subunits. Required for vegetative growth.<ref>PMID:11500370</ref> <ref>PMID:14623999</ref> [[http://www.uniprot.org/uniprot/RLP7_YEAST RLP7_YEAST]] Involved in the biogenesis of the 60S ribosomal subunit. May act as a specificity factor that binds precursor rRNAs and tethers the enzymes that carry out the early 5' to 3' exonucleolytic reactions that generate the mature rRNAs.<ref>PMID:11087857</ref> [[http://www.uniprot.org/uniprot/NSA1_YEAST NSA1_YEAST]] Involved in the biogenesis of the 60S ribosomal subunit.<ref>PMID:16544271</ref> [[http://www.uniprot.org/uniprot/NOP15_YEAST NOP15_YEAST]] Involved in the biogenesis of the 60S ribosomal subunit. Required for pre-rRNA processing and cytokinesis. Associates with the precursors of the 25S and 5.8S rRNAs.<ref>PMID:11583614</ref> <ref>PMID:14657029</ref> [[http://www.uniprot.org/uniprot/RRP1_YEAST RRP1_YEAST]] Required for 27S rRNA processing to 25S and 5.8S. | + | [https://www.uniprot.org/uniprot/NSA1_YEAST NSA1_YEAST] Involved in the biogenesis of the 60S ribosomal subunit.<ref>PMID:16544271</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
| Line 23: |
Line 22: |
| | ==See Also== | | ==See Also== |
| | *[[Eukaryotic initiation factor 3D structures|Eukaryotic initiation factor 3D structures]] | | *[[Eukaryotic initiation factor 3D structures|Eukaryotic initiation factor 3D structures]] |
| | + | *[[GTP-binding protein 3D structures|GTP-binding protein 3D structures]] |
| | + | *[[Helicase 3D structures|Helicase 3D structures]] |
| | *[[Ribosome 3D structures|Ribosome 3D structures]] | | *[[Ribosome 3D structures|Ribosome 3D structures]] |
| - | *[[Ribosome biogenesis protein|Ribosome biogenesis protein]] | + | *[[Ribosome biogenesis protein 3D structures|Ribosome biogenesis protein 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| Line 30: |
Line 31: |
| | </SX> | | </SX> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: RNA helicase]]
| + | [[Category: Saccharomyces cerevisiae BY4741]] |
| - | [[Category: Saccharomyces cerevisiae by4741]] | + | [[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: Miller L]] |
| - | [[Category: Miller, L]] | + | [[Category: Sanghai ZA]] |
| - | [[Category: Sanghai, Z A]] | + | |
| - | [[Category: Lsu processome]]
| + | |
| - | [[Category: Pre-60]]
| + | |
| - | [[Category: Ribosome]]
| + | |
| - | [[Category: Ribosome biogenesis]]
| + | |
| Structural highlights
Function
NSA1_YEAST Involved in the biogenesis of the 60S ribosomal subunit.[1]
Publication Abstract from PubMed
Early co-transcriptional events of eukaryotic ribosome assembly result in the formation of precursors of the small (40S) and large (60S) ribosomal subunits(1). A multitude of transient assembly factors regulate and chaperone the systematic folding of pre-ribosomal RNA subdomains. However, due to limited structural information, the role of these factors during early nucleolar 60S assembly is not fully understood. Here we have determined cryo-EM reconstructions of the nucleolar pre-60S ribosomal subunit in different conformational states at resolutions up to 3.4 A. These reconstructions reveal how steric hindrance and molecular mimicry are used to prevent both premature folding states and binding of later factors. This is accomplished by the concerted activity of 21 ribosome assembly factors that stabilize and remodel pre-ribosomal RNA and ribosomal proteins. Among these factors, three Brix-domain proteins and their binding partners form a ring-like structure at rRNA domain boundaries to support the architecture of the maturing particle. Mutually exclusive conformations of these pre-60S particles suggest that the formation of the polypeptide exit tunnel is achieved through different folding pathways during subsequent stages of ribosome assembly. These structures rationalize previous genetic and biochemical data and highlight the mechanisms driving eukaryotic ribosome assembly in a unidirectional manner.
Modular assembly of the nucleolar pre-60S ribosomal subunit.,Sanghai ZA, Miller L, Molloy KR, Barandun J, Hunziker M, Chaker-Margot M, Wang J, Chait BT, Klinge S Nature. 2018 Mar 5. pii: nature26156. doi: 10.1038/nature26156. PMID:29512650[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Wade CH, Umbarger MA, McAlear MA. The budding yeast rRNA and ribosome biosynthesis (RRB) regulon contains over 200 genes. Yeast. 2006 Mar;23(4):293-306. PMID:16544271 doi:http://dx.doi.org/10.1002/yea.1353
- ↑ Sanghai ZA, Miller L, Molloy KR, Barandun J, Hunziker M, Chaker-Margot M, Wang J, Chait BT, Klinge S. Modular assembly of the nucleolar pre-60S ribosomal subunit. Nature. 2018 Mar 5. pii: nature26156. doi: 10.1038/nature26156. PMID:29512650 doi:http://dx.doi.org/10.1038/nature26156
|
