8hsr: Difference between revisions
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==Thermus thermophilus Rho-engaged RNAP elongation complex== | ==Thermus thermophilus Rho-engaged RNAP elongation complex (composite structure)== | ||
<StructureSection load='8hsr' size='340' side='right'caption='[[8hsr]], [[Resolution|resolution]] 4.00Å' scene=''> | <StructureSection load='8hsr' size='340' side='right'caption='[[8hsr]], [[Resolution|resolution]] 4.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[8hsr]] is a 14 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8HSR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8HSR FirstGlance]. <br> | <table><tr><td colspan='2'>[[8hsr]] is a 14 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8HSR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8HSR FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <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]] 4Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=BEF:BERYLLIUM+TRIFLUORIDE+ION'>BEF</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=8hsr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8hsr OCA], [https://pdbe.org/8hsr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8hsr RCSB], [https://www.ebi.ac.uk/pdbsum/8hsr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8hsr 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=8hsr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8hsr OCA], [https://pdbe.org/8hsr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8hsr RCSB], [https://www.ebi.ac.uk/pdbsum/8hsr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8hsr ProSAT]</span></td></tr> | ||
</table> | </table> | ||
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</div> | </div> | ||
<div class="pdbe-citations 8hsr" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 8hsr" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[RNA polymerase 3D structures|RNA polymerase 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
Latest revision as of 15:42, 17 July 2024
Thermus thermophilus Rho-engaged RNAP elongation complex (composite structure)Thermus thermophilus Rho-engaged RNAP elongation complex (composite structure)
Structural highlights
FunctionQ5SJE9_THET8 Facilitates transcription termination by a mechanism that involves Rho binding to the nascent RNA, activation of Rho's RNA-dependent ATPase activity, and release of the mRNA from the DNA template.[HAMAP-Rule:MF_01884] Publication Abstract from PubMedTranscription termination is an essential step in transcription by RNA polymerase (RNAP) and crucial for gene regulation. For many bacterial genes, transcription termination is mediated by the adenosine triphosphate-dependent RNA translocase/helicase Rho, which causes RNA/DNA dissociation from the RNAP elongation complex (EC). However, the structural basis of the interplay between Rho and RNAP remains obscure. Here, we report the cryo-electron microscopy structure of the Thermus thermophilus RNAP EC engaged with Rho. The Rho hexamer binds RNAP through the carboxyl-terminal domains, which surround the RNA exit site of RNAP, directing the nascent RNA seamlessly from the RNA exit to its central channel. The beta-flap tip at the RNA exit is critical for the Rho-dependent RNA release, and its deletion causes an alternative Rho-RNAP binding mode, which is irrelevant to termination. The Rho binding site overlaps with the binding sites of other macromolecules, such as ribosomes, providing a general basis of gene regulation. Structural basis of the transcription termination factor Rho engagement with transcribing RNA polymerase from Thermus thermophilus.,Murayama Y, Ehara H, Aoki M, Goto M, Yokoyama T, Sekine SI Sci Adv. 2023 Feb 10;9(6):eade7093. doi: 10.1126/sciadv.ade7093. Epub 2023 Feb 8. PMID:36753546[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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