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[[Image:1a8v.jpg|left|200px]]<br /><applet load="1a8v" size="350" color="white" frame="true" align="right" spinBox="true"
caption="1a8v, resolution 2.0&Aring;" />
'''STRUCTURE OF THE RNA-BINDING DOMAIN OF THE RHO TRANSCRIPTION TERMINATOR'''<br />


==Overview==
==STRUCTURE OF THE RNA-BINDING DOMAIN OF THE RHO TRANSCRIPTION TERMINATOR==
The E. coli Rho protein disengages newly transcribed RNA from its DNA template, helping terminate certain transcripts. We have determined the X-ray crystal structure of the RNA-binding domain of Rho complexed to an RNA ligand. Filters that screen both ligand size and chemical functionality line the primary nucleic acid-binding site, imparting sequence specificity to a generic single-stranded nucleic acid-binding fold and explaining the preference of Rho for cytosine-rich RNA. The crystal packing reveals two Rho domain protomers bound to a single RNA with a single base spacer, suggesting that the strong RNA-binding sites of Rho may arise from pairing of RNA-binding modules. Dimerization of symmetric subunits on an asymmetric ligand is developed as a model for allosteric control in the action of the intact Rho hexamer.
<StructureSection load='1a8v' size='340' side='right'caption='[[1a8v]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1a8v]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A8V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1A8V 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&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</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=1a8v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1a8v OCA], [https://pdbe.org/1a8v PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1a8v RCSB], [https://www.ebi.ac.uk/pdbsum/1a8v PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1a8v ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RHO_ECOLI RHO_ECOLI] 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. RNA-dependent NTPAse which utilizes all four ribonucleoside triphosphates as substrates.[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/a8/1a8v_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1a8v ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1A8V is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=CU:'>CU</scene> as [http://en.wikipedia.org/wiki/ligand ligand]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1A8V OCA].
*[[Helicase 3D structures|Helicase 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
The structural basis for terminator recognition by the Rho transcription termination factor., Bogden CE, Fass D, Bergman N, Nichols MD, Berger JM, Mol Cell. 1999 Apr;3(4):487-93. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=10230401 10230401]
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Berger, J M.]]
[[Category: Berger JM]]
[[Category: Bogden, C.]]
[[Category: Bogden C]]
[[Category: Fass, D.]]
[[Category: Fass D]]
[[Category: CU]]
[[Category: rho protein]]
[[Category: rna-binding]]
[[Category: terminator]]
[[Category: transcription termination]]
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 11:42:14 2008''

Latest revision as of 06:28, 7 February 2024

STRUCTURE OF THE RNA-BINDING DOMAIN OF THE RHO TRANSCRIPTION TERMINATOR

1a8v, resolution 2.00Å

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