2f41: Difference between revisions
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==Crystal structure of FapR- a global regulator of fatty acid biosynthesis in B. subtilis== | ==Crystal structure of FapR- a global regulator of fatty acid biosynthesis in B. subtilis== | ||
<StructureSection load='2f41' size='340' side='right' caption='[[2f41]], [[Resolution|resolution]] 2.50Å' scene=''> | <StructureSection load='2f41' size='340' side='right'caption='[[2f41]], [[Resolution|resolution]] 2.50Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2f41]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[2f41]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/"vibrio_subtilis"_ehrenberg_1835 "vibrio subtilis" ehrenberg 1835]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2F41 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2F41 FirstGlance]. <br> | ||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2f3x|2f3x]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2f3x|2f3x]]</div></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">fapR ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">fapR ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1423 "Vibrio subtilis" Ehrenberg 1835])</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2f41 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2f41 OCA], [https://pdbe.org/2f41 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2f41 RCSB], [https://www.ebi.ac.uk/pdbsum/2f41 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2f41 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/FAPR_BACSU FAPR_BACSU]] Transcription factor involved in regulation of membrane lipid biosynthesis by repressing genes involved in fatty acid and phospholipid metabolism. Binds to the 5'-TTAGTANNNNNTANTAA-3' consensus sequence found in the promoter of fabHAF operon (containing fabHA and fabF genes), yhdO and fapR genes and prevents their expression. Its action is probably modulated by malonyl-CoA.<ref>PMID:12737802</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Vibrio subtilis ehrenberg 1835]] | [[Category: Vibrio subtilis ehrenberg 1835]] | ||
[[Category: Large Structures]] | |||
[[Category: Alzari, P M]] | [[Category: Alzari, P M]] | ||
[[Category: Buschiazzo, A]] | [[Category: Buschiazzo, A]] | ||
Revision as of 13:37, 17 February 2021
Crystal structure of FapR- a global regulator of fatty acid biosynthesis in B. subtilisCrystal structure of FapR- a global regulator of fatty acid biosynthesis in B. subtilis
Structural highlights
Function[FAPR_BACSU] Transcription factor involved in regulation of membrane lipid biosynthesis by repressing genes involved in fatty acid and phospholipid metabolism. Binds to the 5'-TTAGTANNNNNTANTAA-3' consensus sequence found in the promoter of fabHAF operon (containing fabHA and fabF genes), yhdO and fapR genes and prevents their expression. Its action is probably modulated by malonyl-CoA.[1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedMalonyl-CoA is an essential intermediate in fatty acid synthesis in all living cells. Here we demonstrate a new role for this molecule as a global regulator of lipid homeostasis in Gram-positive bacteria. Using in vitro transcription and binding studies, we demonstrate that malonyl-CoA is a direct and specific inducer of Bacillus subtilis FapR, a conserved transcriptional repressor that regulates the expression of several genes involved in bacterial fatty acid and phospholipid synthesis. The crystal structure of the effector-binding domain of FapR reveals a homodimeric protein with a thioesterase-like 'hot-dog' fold. Binding of malonyl-CoA promotes a disorder-to-order transition, which transforms an open ligand-binding groove into a long tunnel occupied by the effector molecule in the complex. This ligand-induced modification propagates to the helix-turn-helix motifs, impairing their productive association for DNA binding. Structure-based mutations that disrupt the FapR-malonyl-CoA interaction prevent DNA-binding regulation and result in a lethal phenotype in B. subtilis, suggesting this homeostatic signaling pathway as a promising target for novel chemotherapeutic agents against Gram-positive pathogens. Structural basis of lipid biosynthesis regulation in Gram-positive bacteria.,Schujman GE, Guerin M, Buschiazzo A, Schaeffer F, Llarrull LI, Reh G, Vila AJ, Alzari PM, de Mendoza D EMBO J. 2006 Sep 6;25(17):4074-83. Epub 2006 Aug 24. PMID:16932747[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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