3l0o: Difference between revisions
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==Structure of RNA-free Rho transcription termination factor from Thermotoga maritima== | |||
<StructureSection load='3l0o' size='340' side='right'caption='[[3l0o]], [[Resolution|resolution]] 2.35Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3l0o]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3L0O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3L0O FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.35Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IUM:URANYL+(VI)+ION'>IUM</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=3l0o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3l0o OCA], [https://pdbe.org/3l0o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3l0o RCSB], [https://www.ebi.ac.uk/pdbsum/3l0o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3l0o ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/RHO_THEMA RHO_THEMA] 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] | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/l0/3l0o_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3l0o ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The Rho factor is a ring-shaped ATP-dependent helicase that mediates transcription termination in most prokaryotic cells by disengaging the transcription elongation complex formed by the RNA polymerase, DNA, and the nascent RNA transcript. The crystal structures of key intermediates along the kinetic pathway of RNA binding to Rho unveiled an unprecedented mode of helicase loading and provided a model for the ATP turnover coupled to coordinated strand movement. Here we report the structure of the early RNA-free state of Rho, which had eluded crystallization for many years but now completes the series. The structure allows the characterization of the apo-form Rho from Thermotoga maritima to 2.3 A resolution, reveals an RNA-recruiting site that becomes hidden after occupancy of the adjacent specific primary RNA-binding site, and suggests an enriched model for mRNA capture that is consistent with previous data. | |||
The structure of RNA-free Rho termination factor indicates a dynamic mechanism of transcript capture.,Canals A, Uson I, Coll M J Mol Biol. 2010 Jul 2;400(1):16-23. Epub 2010 May 7. PMID:20452362<ref>PMID:20452362</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3l0o" style="background-color:#fffaf0;"></div> | |||
==See Also== | ==See Also== | ||
*[[Helicase|Helicase]] | *[[Helicase 3D structures|Helicase 3D structures]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Thermotoga maritima]] | [[Category: Thermotoga maritima]] | ||
[[Category: Canals | [[Category: Canals A]] | ||
[[Category: Coll | [[Category: Coll M]] | ||
[[Category: Uson | [[Category: Uson I]] | ||
Latest revision as of 09:37, 13 August 2026
Structure of RNA-free Rho transcription termination factor from Thermotoga maritima
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