View source for 8c00


==Enp1TAP-S21_A population of yeast small ribosomal subunit precursors depleted of rpS21/eS21==
<StructureSection load='8c00' size='340' side='right'caption='[[8c00]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8c00]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8C00 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8C00 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.9&#8491;</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=8c00 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8c00 OCA], [https://pdbe.org/8c00 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8c00 RCSB], [https://www.ebi.ac.uk/pdbsum/8c00 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8c00 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RS5_YEAST RS5_YEAST] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
RpS0/uS2, rpS2/uS5, and rpS21/eS21 form a cluster of ribosomal proteins (S0-cluster) at the head-body junction near the central pseudoknot of eukaryotic small ribosomal subunits (SSU). Previous work in yeast indicated that S0-cluster assembly is required for the stabilisation and maturation of SSU precursors at specific post-nucleolar stages. Here, we analysed the role of S0-cluster formation for rRNA folding. Structures of SSU precursors isolated from yeast S0-cluster expression mutants or control strains were analysed by cryogenic electron microscopy. The obtained resolution was sufficient to detect individual 2'-O-methyl RNA modifications using an unbiased scoring approach. The data show how S0-cluster formation enables the initial recruitment of the pre-rRNA processing factor Nob1 in yeast. Furthermore, they reveal hierarchical effects on the pre-rRNA folding pathway, including the final maturation of the central pseudoknot. Based on these structural insights we discuss how formation of the S0-cluster determines at this early cytoplasmic assembly checkpoint if SSU precursors further mature or are degraded.

Impact of the yeast S0/uS2-cluster ribosomal protein rpS21/eS21 on rRNA folding and the architecture of small ribosomal subunit precursors.,Poll G, Griesenbeck J, Tschochner H, Milkereit P PLoS One. 2023 Mar 30;18(3):e0283698. doi: 10.1371/journal.pone.0283698. , eCollection 2023. PMID:36996028<ref>PMID:36996028</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8c00" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribosome 3D structures|Ribosome 3D structures]]
*[[Ribosome biogenesis protein 3D structures|Ribosome biogenesis protein 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Milkereit P]]
[[Category: Poell G]]