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| <StructureSection load='6o6n' size='340' side='right'caption='[[6o6n]], [[Resolution|resolution]] 1.70Å' scene=''> | | <StructureSection load='6o6n' size='340' side='right'caption='[[6o6n]], [[Resolution|resolution]] 1.70Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
- | <table><tr><td colspan='2'>[[6o6n]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_tuberculosis"_(zopf_1883)_klein_1884 "bacillus tuberculosis" (zopf 1883) klein 1884]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6O6N OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6O6N FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6o6n]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6O6N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6O6N FirstGlance]. <br> |
- | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5F9:ARACHINOYL-COA'>5F9</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7Å</td></tr> |
- | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">kstR2_2, kstR2_1, kstR2_3, kstR2_4, kstR2_5, kstR2_6, kstR2_7, DSI35_30495, ERS007661_03222, ERS007663_03464, ERS007665_00400, ERS007720_01056, ERS007741_00500, ERS023446_00266, ERS027646_02562, ERS027651_00856, ERS027652_02035, ERS027653_03199, ERS027656_00595, ERS027666_01457, ERS124361_00903, SAMEA2682864_03848, SAMEA2683035_03897 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1773 "Bacillus tuberculosis" (Zopf 1883) Klein 1884])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=5F9:ARACHINOYL-COA'>5F9</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene></td></tr> |
- | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6o6n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6o6n OCA], [http://pdbe.org/6o6n PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6o6n RCSB], [http://www.ebi.ac.uk/pdbsum/6o6n PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6o6n ProSAT]</span></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=6o6n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6o6n OCA], [https://pdbe.org/6o6n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6o6n RCSB], [https://www.ebi.ac.uk/pdbsum/6o6n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6o6n ProSAT]</span></td></tr> |
| </table> | | </table> |
- | <div style="background-color:#fffaf0;">
| + | == Function == |
- | == Publication Abstract from PubMed == | + | [https://www.uniprot.org/uniprot/O05858_MYCTU O05858_MYCTU] |
- | Mycobacterium tuberculosis is a pathogen with a unique cell envelope including very long fatty acids, implicated in bacterial resistance and host immune modulation. FasR is a TetR-like transcriptional activator that plays a central role in sensing mycobacterial long-chain fatty acids and regulating lipid biosynthesis. Here we disclose crystal structures of M. tuberculosis FasR in complex with acyl effector ligands and with DNA, uncovering its molecular sensory and switching mechanisms. A long tunnel traverses the entire effector-binding domain, enabling long fatty acyl effectors to bind. Only when the tunnel is entirely occupied, the protein dimer adopts a rigid configuration with its DNA-binding domains in an open state, leading to DNA dissociation. The protein-folding hydrophobic core connects the two domains, and is completed into a continuous spine when the effector binds. Such a transmission spine is conserved in a large number of TetR-like regulators, offering insight into effector-triggered allosteric functional control.
| + | |
| | | |
- | Mycobacterium tuberculosis FasR senses long fatty acyl-CoA through a tunnel and a hydrophobic transmission spine.,Lara J, Diacovich L, Trajtenberg F, Larrieux N, Malchiodi EL, Fernandez MM, Gago G, Gramajo H, Buschiazzo A Nat Commun. 2020 Jul 24;11(1):3703. doi: 10.1038/s41467-020-17504-x. PMID:32710080<ref>PMID:32710080</ref>
| + | ==See Also== |
- | | + | *[[Tetracycline repressor protein 3D structures|Tetracycline repressor protein 3D structures]] |
- | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | *[[Transcriptional activator 3D structures|Transcriptional activator 3D structures]] |
- | </div>
| + | |
- | <div class="pdbe-citations 6o6n" style="background-color:#fffaf0;"></div>
| + | |
- | == References ==
| + | |
- | <references/>
| + | |
| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
- | [[Category: Buschiazzo, A]] | + | [[Category: Mycobacterium tuberculosis]] |
- | [[Category: Gramajo, H]] | + | [[Category: Buschiazzo A]] |
- | [[Category: Lara, J]] | + | [[Category: Gramajo H]] |
- | [[Category: Larrieux, N]] | + | [[Category: Lara J]] |
- | [[Category: Trajtenberg, F]] | + | [[Category: Larrieux N]] |
- | [[Category: Fatty acid biosynthesis regulation]]
| + | [[Category: Trajtenberg F]] |
- | [[Category: Tetr-like transcription factor]]
| + | |
- | [[Category: Transcription]]
| + | |