1hw1

<StructureSection load='1hw1' size='340' side='right' caption='[[1hw1]], [[Resolution|resolution]] 1.50&Aring;' scene=''>

<table><tr><td colspan='2'>[[1hw1]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1HW1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1HW1 FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1hw2|1hw2]]</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=1hw1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1hw1 OCA], [http://pdbe.org/1hw1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1hw1 RCSB], [http://www.ebi.ac.uk/pdbsum/1hw1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1hw1 ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/FADR_ECOLI FADR_ECOLI]] Multifunctional regulator of fatty acid metabolism. Represses transcription of at least eight genes required for fatty acid transport and beta-oxidation including fadA, fadB, fadD, fadL and fadE. Activates transcription of at least three genes required for unsaturated fatty acid biosynthesis: fabA, fabB and iclR, the gene encoding the transcriptional regulator of the aceBAK operon encoding the glyoxylate shunt enzymes. Binding of FadR is specifically inhibited by long chain fatty acyl-CoA compounds.

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hw/1hw1_consurf.spt"</scriptWhenChecked>

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== Publication Abstract from PubMed ==

In Escherichia coli, the expression of fatty acid metabolic genes is controlled by the transcription factor, FadR. The affinity of FadR for DNA is controlled by long chain acyl-CoA molecules, which bind to the protein and modulate gene expression. The crystal structure of FadR reveals a two domain dimeric molecule where the N-terminal domains bind DNA, and the C-terminal domains bind acyl-CoA. The DNA binding domain has a winged-helix motif, and the C-terminal domain resembles the sensor domain of the Tet repressor. The FadR.DNA complex reveals how the protein interacts with DNA and specifically recognizes a palindromic sequence. Structural and functional similarities to the Tet repressor and the BmrR transcription factors suggest how the binding of the acyl-CoA effector molecule to the C-terminal domain may affect the DNA binding affinity of the N-terminal domain. We suggest that the binding of acyl-CoA disrupts a buried network of charged and polar residues in the C-terminal domain, and the resulting conformational change is transmitted to the N-terminal domain via a domain-spanning alpha-helix.

The FadR.DNA complex. Transcriptional control of fatty acid metabolism in Escherichia coli.,Xu Y, Heath RJ, Li Z, Rock CO, White SW J Biol Chem. 2001 May 18;276(20):17373-9. Epub 2001 Feb 13. PMID:11279025<ref>PMID:11279025</ref>

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

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<div class="pdbe-citations 1hw1" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Heath, R J]]

[[Category: Li, Z]]

[[Category: Rock, C O]]

[[Category: White, S W]]

[[Category: Xu, Y]]

[[Category: Helix bundle]]

[[Category: Helix-turn-helix]]

[[Category: Transcription]]