6xhv
From Proteopedia
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| - | ==== | + | ==Crystal structure of the A2058-dimethylated Thermus thermophilus 70S ribosome in complex with mRNA, aminoacylated A- and P-site tRNAs, and deacylated E-site tRNA at 2.40A resolution== |
| - | <StructureSection load='6xhv' size='340' side='right'caption='[[6xhv]]' scene=''> | + | <StructureSection load='6xhv' size='340' side='right'caption='[[6xhv]], [[Resolution|resolution]] 2.40Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id= OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol= FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6xhv]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6XHV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6XHV FirstGlance]. <br> |
| - | </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=6xhv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6xhv OCA], [https://pdbe.org/6xhv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6xhv RCSB], [https://www.ebi.ac.uk/pdbsum/6xhv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6xhv ProSAT]</span></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0TD:(3S)-3-(METHYLSULFANYL)-L-ASPARTIC+ACID'>0TD</scene>, <scene name='pdbligand=2MA:2-METHYLADENOSINE-5-MONOPHOSPHATE'>2MA</scene>, <scene name='pdbligand=2MG:2N-METHYLGUANOSINE-5-MONOPHOSPHATE'>2MG</scene>, <scene name='pdbligand=2MU:2,5-DIMETHYLURIDINE-5-MONOPHOSPHATE'>2MU</scene>, <scene name='pdbligand=31H:3-DEOXY-3-[(N-FORMYL-L-METHIONYL)AMINO]ADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>31H</scene>, <scene name='pdbligand=4OC:4N,O2-METHYLCYTIDINE-5-MONOPHOSPHATE'>4OC</scene>, <scene name='pdbligand=4SU:4-THIOURIDINE-5-MONOPHOSPHATE'>4SU</scene>, <scene name='pdbligand=5MC:5-METHYLCYTIDINE-5-MONOPHOSPHATE'>5MC</scene>, <scene name='pdbligand=5MU:5-METHYLURIDINE+5-MONOPHOSPHATE'>5MU</scene>, <scene name='pdbligand=7MG:7N-METHYL-8-HYDROGUANOSINE-5-MONOPHOSPHATE'>7MG</scene>, <scene name='pdbligand=F3N:3-DEOXY-3-(L-PHENYLALANYLAMINO)ADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>F3N</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=M2G:N2-DIMETHYLGUANOSINE-5-MONOPHOSPHATE'>M2G</scene>, <scene name='pdbligand=MA6:6N-DIMETHYLADENOSINE-5-MONOPHOSHATE'>MA6</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MIA:2-METHYLTHIO-N6-ISOPENTENYL-ADENOSINE-5-MONOPHOSPHATE'>MIA</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=UR3:3-METHYLURIDINE-5-MONOPHOSHATE'>UR3</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=6xhv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6xhv OCA], [https://pdbe.org/6xhv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6xhv RCSB], [https://www.ebi.ac.uk/pdbsum/6xhv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6xhv ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/RL3_THET8 RL3_THET8] One of the primary rRNA binding proteins, it binds directly near the 3'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit (By similarity).[HAMAP-Rule:MF_01325_B] | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Many antibiotics inhibit bacterial growth by binding to the ribosome and interfering with protein biosynthesis. Macrolides represent one of the most successful classes of ribosome-targeting antibiotics. The main clinically relevant mechanism of resistance to macrolides is dimethylation of the 23S rRNA nucleotide A2058, located in the drug-binding site, a reaction catalyzed by Erm-type rRNA methyltransferases. Here, we present the crystal structure of the Erm-dimethylated 70S ribosome at 2.4 A resolution, together with the structures of unmethylated 70S ribosome functional complexes alone or in combination with macrolides. Altogether, our structural data do not support previous models and, instead, suggest a principally new explanation of how A2058 dimethylation confers resistance to macrolides. Moreover, high-resolution structures of two macrolide antibiotics bound to the unmodified ribosome reveal a previously unknown role of the desosamine moiety in drug binding, laying a foundation for the rational knowledge-based design of macrolides that can overcome Erm-mediated resistance. | ||
| + | |||
| + | Structure of Erm-modified 70S ribosome reveals the mechanism of macrolide resistance.,Svetlov MS, Syroegin EA, Aleksandrova EV, Atkinson GC, Gregory ST, Mankin AS, Polikanov YS Nat Chem Biol. 2021 Apr;17(4):412-420. doi: 10.1038/s41589-020-00715-0. Epub 2021 , Jan 18. PMID:33462493<ref>PMID:33462493</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6xhv" style="background-color:#fffaf0;"></div> | ||
| + | |||
| + | ==See Also== | ||
| + | *[[Ribosomal protein THX 3D structures|Ribosomal protein THX 3D structures]] | ||
| + | *[[Ribosome 3D structures|Ribosome 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
| - | [[Category: | + | [[Category: Thermus thermophilus HB8]] |
| + | [[Category: Aleksandrova EV]] | ||
| + | [[Category: Atkinson GC]] | ||
| + | [[Category: Gregory ST]] | ||
| + | [[Category: Mankin AS]] | ||
| + | [[Category: Polikanov YS]] | ||
| + | [[Category: Svetlov MS]] | ||
| + | [[Category: Syroegin EA]] | ||
Revision as of 14:52, 18 October 2023
Crystal structure of the A2058-dimethylated Thermus thermophilus 70S ribosome in complex with mRNA, aminoacylated A- and P-site tRNAs, and deacylated E-site tRNA at 2.40A resolution
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