1lbh

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[[Image:1lbh.png|left|200px]]
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==INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG==
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<StructureSection load='1lbh' size='340' side='right' caption='[[1lbh]], [[Resolution|resolution]] 3.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1lbh]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LBH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1LBH FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IPT:ISOPROPYL-1-BETA-D-THIOGALACTOSIDE'>IPT</scene><br>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LAC I ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1lbh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lbh OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1lbh RCSB], [http://www.ebi.ac.uk/pdbsum/1lbh PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lb/1lbh_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The lac operon of Escherichia coli is the paradigm for gene regulation. Its key component is the lac repressor, a product of the lacI gene. The three-dimensional structures of the intact lac repressor, the lac repressor bound to the gratuitous inducer isopropyl-beta-D-1-thiogalactoside (IPTG) and the lac repressor complexed with a 21-base pair symmetric operator DNA have been determined. These three structures show the conformation of the molecule in both the induced and repressed states and provide a framework for understanding a wealth of biochemical and genetic information. The DNA sequence of the lac operon has three lac repressor recognition sites in a stretch of 500 base pairs. The crystallographic structure of the complex with DNA suggests that the tetrameric repressor functions synergistically with catabolite gene activator protein (CAP) and participates in the quaternary formation of repression loops in which one tetrameric repressor interacts simultaneously with two sites on the genomic DNA.
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{{STRUCTURE_1lbh| PDB=1lbh | SCENE= }}
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Crystal structure of the lactose operon repressor and its complexes with DNA and inducer.,Lewis M, Chang G, Horton NC, Kercher MA, Pace HC, Schumacher MA, Brennan RG, Lu P Science. 1996 Mar 1;271(5253):1247-54. PMID:8638105<ref>PMID:8638105</ref>
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===INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_8638105}}
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==About this Structure==
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[[1lbh]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LBH OCA].
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==See Also==
==See Also==
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*[[Lac repressor|Lac repressor]]
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*[[Lac repressor 3D structures|Lac repressor 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:008638105</ref><ref group="xtra">PMID:015048824</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Chang, G.]]
[[Category: Chang, G.]]

Revision as of 13:15, 28 September 2014

INTACT LACTOSE OPERON REPRESSOR WITH GRATUITOUS INDUCER IPTG

1lbh, resolution 3.20Å

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