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{{STRUCTURE_1b4a|  PDB=1b4a  |  SCENE=  }}
===STRUCTURE OF THE ARGININE REPRESSOR FROM BACILLUS STEAROTHERMOPHILUS===
{{ABSTRACT_PUBMED_10331868}}


==Function==
==STRUCTURE OF THE ARGININE REPRESSOR FROM BACILLUS STEAROTHERMOPHILUS==
[[http://www.uniprot.org/uniprot/ARGR_BACST ARGR_BACST]] Regulates arginine biosynthesis genes.  
<StructureSection load='1b4a' size='340' side='right'caption='[[1b4a]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1b4a]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B4A OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1B4A 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]] 2.5&#8491;</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=1b4a FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b4a OCA], [https://pdbe.org/1b4a PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1b4a RCSB], [https://www.ebi.ac.uk/pdbsum/1b4a PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1b4a ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/ARGR_GEOSE ARGR_GEOSE] Regulates arginine biosynthesis genes.
== 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/b4/1b4a_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=1b4a ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The arginine repressor (ArgR) is a hexameric DNA-binding protein that plays a multifunctional role in the bacterial cell. Here, we present the 2.5 A structure of apo-ArgR from Bacillus stearothermophilus and the 2.2 A structure of the hexameric ArgR oligomerization domain with bound arginine. This first view of intact ArgR reveals an approximately 32-symmetric hexamer of identical subunits, with six DNA-binding domains surrounding a central oligomeric core. The difference in quaternary organization of subunits in the arginine-bound and apo forms provides a possible explanation for poor operator binding by apo-ArgR and for high affinity binding in the presence of arginine.


==About this Structure==
Structure of the arginine repressor from Bacillus stearothermophilus.,Ni J, Sakanyan V, Charlier D, Glansdorff N, Van Duyne GD Nat Struct Biol. 1999 May;6(5):427-32. PMID:10331868<ref>PMID:10331868</ref>
[[1b4a]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B4A OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
<ref group="xtra">PMID:010331868</ref><references group="xtra"/><references/>
</div>
<div class="pdbe-citations 1b4a" style="background-color:#fffaf0;"></div>
 
==See Also==
*[[Arginine repressor 3D structures|Arginine repressor 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Geobacillus stearothermophilus]]
[[Category: Geobacillus stearothermophilus]]
[[Category: Charlier, D.]]
[[Category: Large Structures]]
[[Category: Duyne, G D.Van.]]
[[Category: Charlier D]]
[[Category: Glansdorff, N.]]
[[Category: Glansdorff N]]
[[Category: Ni, J.]]
[[Category: Ni J]]
[[Category: Sakanyan, V.]]
[[Category: Sakanyan V]]
[[Category: Arginine]]
[[Category: Van Duyne GD]]
[[Category: Helix turn helix]]
[[Category: Repressor]]
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