1h0m

==THREE-DIMENSIONAL STRUCTURE OF THE QUORUM SENSING PROTEIN TRAR BOUND TO ITS AUTOINDUCER AND TO ITS TARGET DNA==

<StructureSection load='1h0m' size='340' side='right' caption='[[1h0m]], [[Resolution|resolution]] 3.00&Aring;' scene=''>

<table><tr><td colspan='2'>[[1h0m]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Agrobacterium_tumefaciens Agrobacterium tumefaciens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H0M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1H0M FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HSL:HOMOSERINE+LACTONE'>HSL</scene>, <scene name='pdbligand=OOA:3-OXOOCTANOIC+ACID'>OOA</scene></td></tr>

<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1l3l|1l3l]]</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1h0m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h0m OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1h0m RCSB], [http://www.ebi.ac.uk/pdbsum/1h0m PDBsum]</span></td></tr>

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h0/1h0m_consurf.spt"</scriptWhenChecked>

</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/chain_selection.php?pdb_ID=2ata ConSurf].

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== Publication Abstract from PubMed ==

The quorum sensing system allows bacteria to sense their cell density and initiate an altered pattern of gene expression after a sufficient quorum of cells has accumulated. In Agrobacterium tumefaciens, quorum sensing controls conjugal transfer of the tumour- inducing plasmid, responsible for plant crown gall disease. The core components of this system are the transcriptional regulator TraR and its inducing ligand N-(3-oxo-octanoyl)-L-homoserine lactone. This complex binds DNA and activates gene expression. We have determined the crystal structure of TraR in complex with its autoinducer and target DNA (PDB code 1h0m). The protein is dimeric, with each monomer composed of an N-terminal domain, which binds the ligand in an enclosed cavity far from the dimerization region, and a C-terminal domain, which binds DNA via a helix-turn-helix motif. The structure reveals an asymmetric homodimer, with one monomer longer than the other. The N-terminal domain resembles GAF/PAS domains, normally fused to catalytic signalling domains. In TraR, the gene fusion is between a GAF/PAS domain and a DNA-binding domain, resulting in a specific transcriptional regulator involved in quorum sensing.

The crystal structure of the quorum sensing protein TraR bound to its autoinducer and target DNA.,Vannini A, Volpari C, Gargioli C, Muraglia E, Cortese R, De Francesco R, Neddermann P, Marco SD EMBO J. 2002 Sep 2;21(17):4393-401. PMID:12198141<ref>PMID:12198141</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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*[[Transcriptional activator|Transcriptional activator]]

[[Category: Cortese, R]]

[[Category: Francesco, R De]]

[[Category: Gargioli, C]]

[[Category: Marco, S Di]]

[[Category: Muraglia, E]]

[[Category: Neddermann, P]]

[[Category: Volpari, C]]

[[Category: Dna-binding protein]]

[[Category: Homoserine lactone]]

[[Category: Luxr-type protein]]

[[Category: Quorum sensing]]

[[Category: Trar]]