8ova

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'''Unreleased structure'''
 
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The entry 8ova is ON HOLD until Paper Publication
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==CRYO-EM STRUCTURE OF TRYPANOSOMA BRUCEI PROCYCLIC FORM 80S RIBOSOME : PARENTAL STRAIN==
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<StructureSection load='8ova' size='340' side='right'caption='[[8ova]], [[Resolution|resolution]] 2.47&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[8ova]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Trypanosoma_brucei_brucei Trypanosoma brucei brucei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8OVA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8OVA FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.47&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=1MA:6-HYDRO-1-METHYLADENOSINE-5-MONOPHOSPHATE'>1MA</scene>, <scene name='pdbligand=5MC:5-METHYLCYTIDINE-5-MONOPHOSPHATE'>5MC</scene>, <scene name='pdbligand=7MG:7N-METHYL-8-HYDROGUANOSINE-5-MONOPHOSPHATE'>7MG</scene>, <scene name='pdbligand=A2M:2-O-METHYLADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>A2M</scene>, <scene name='pdbligand=B8N:(2~{R})-2-azanyl-4-[5-[(2~{S},3~{R},4~{S},5~{R})-3,4-bis(oxidanyl)-5-(phosphonooxymethyl)oxolan-2-yl]-3-methyl-2,6-bis(oxidanylidene)pyrimidin-1-yl]butanoic+acid'>B8N</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=MA6:6N-DIMETHYLADENOSINE-5-MONOPHOSHATE'>MA6</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=OMC:O2-METHYLYCYTIDINE-5-MONOPHOSPHATE'>OMC</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=OMU:O2-METHYLURIDINE+5-MONOPHOSPHATE'>OMU</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8ova FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8ova OCA], [https://pdbe.org/8ova PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8ova RCSB], [https://www.ebi.ac.uk/pdbsum/8ova PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8ova ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/Q382D5_TRYB2 Q382D5_TRYB2]
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Trypanosomes are protozoan parasites that cycle between insect and mammalian hosts and are the causative agent of sleeping sickness. Here, we describe the changes of pseudouridine (Psi) modification on rRNA in the two life stages of the parasite using four different genome-wide approaches. CRISPR-Cas9 knock-outs of all four snoRNAs guiding Psi on helix 69 (H69) of the large rRNA subunit were lethal. A single knock-out of a snoRNA guiding Psi530 on H69 altered the composition of the 80S monosome. These changes specifically affected the translation of only a subset of proteins. This study correlates a single site Psi modification with changes in ribosomal protein stoichiometry, supported by a high-resolution cryo-EM structure. We propose that alteration in rRNA modifications could generate ribosomes preferentially translating state-beneficial proteins.
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Authors: Rajan, K.S., Yonath, A.
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A single pseudouridine on rRNA regulates ribosome structure and function in the mammalian parasite Trypanosoma brucei.,Rajan KS, Madmoni H, Bashan A, Taoka M, Aryal S, Nobe Y, Doniger T, Galili Kostin B, Blumberg A, Cohen-Chalamish S, Schwartz S, Rivalta A, Zimmerman E, Unger R, Isobe T, Yonath A, Michaeli S Nat Commun. 2023 Nov 20;14(1):7462. doi: 10.1038/s41467-023-43263-6. PMID:37985661<ref>PMID:37985661</ref>
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Description: CRYO-EM STRUCTURE OF TRYPANOSOMA BRUCEI PROCYCLIC FORM 80S RIBOSOME : PARENTAL STRAIN
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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[[Category: Yonath, A]]
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<div class="pdbe-citations 8ova" style="background-color:#fffaf0;"></div>
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[[Category: Rajan, K.S]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
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[[Category: Trypanosoma brucei brucei]]
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[[Category: Rajan KS]]
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[[Category: Yonath A]]

Revision as of 14:02, 29 November 2023

CRYO-EM STRUCTURE OF TRYPANOSOMA BRUCEI PROCYCLIC FORM 80S RIBOSOME : PARENTAL STRAIN

PDB ID 8ova

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