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| | <StructureSection load='3qyx' size='340' side='right'caption='[[3qyx]], [[Resolution|resolution]] 3.75Å' scene=''> | | <StructureSection load='3qyx' size='340' side='right'caption='[[3qyx]], [[Resolution|resolution]] 3.75Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3qyx]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Myctu Myctu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QYX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QYX FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3qyx]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis_H37Rv Mycobacterium tuberculosis H37Rv]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3QYX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3QYX FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3qf3|3qf3]], [[3qwg|3qwg]]</div></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]] 3.75Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">espR, MT3964, Rv3849 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83332 MYCTU])</td></tr>
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| | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3qyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qyx OCA], [https://pdbe.org/3qyx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qyx RCSB], [https://www.ebi.ac.uk/pdbsum/3qyx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qyx 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=3qyx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3qyx OCA], [https://pdbe.org/3qyx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3qyx RCSB], [https://www.ebi.ac.uk/pdbsum/3qyx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3qyx ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/ESPR_MYCTU ESPR_MYCTU]] Virulence regulator that has both architectural and regulatory roles. Impacts cell wall functions and pathogenesis through regulation of multiple genes, including the espACD operon, which is a key ESX-1 component. Influences target gene expression positively or negatively, depending on its binding position relative to the genes it controls. Acts by binding directly to the DNA. May play a central role in regulating virulence gene expression.<ref>PMID:18685700</ref> <ref>PMID:22389481</ref> <ref>PMID:22479184</ref> <ref>PMID:21883526</ref>
| + | [https://www.uniprot.org/uniprot/ESPR_MYCTU ESPR_MYCTU] Virulence regulator that has both architectural and regulatory roles. Impacts cell wall functions and pathogenesis through regulation of multiple genes, including the espACD operon, which is a key ESX-1 component. Influences target gene expression positively or negatively, depending on its binding position relative to the genes it controls. Acts by binding directly to the DNA. May play a central role in regulating virulence gene expression.<ref>PMID:18685700</ref> <ref>PMID:22389481</ref> <ref>PMID:22479184</ref> <ref>PMID:21883526</ref> |
| - | <div style="background-color:#fffaf0;">
| + | |
| - | == Publication Abstract from PubMed ==
| + | |
| - | The human pathogen Mycobacterium tuberculosis requires the ESX-1 secretion system for full virulence. EspR plays a key role in ESX-1 regulation via direct binding and transcriptional activation of the espACD operon. Here, we describe the crystal structures of EspR, a C-terminally truncated form, EspRDelta10, as well as an EspR-DNA complex. EspR forms a dimer with each monomer containing an N-terminal helix-turn-helix DNA binding motif and an atypical C-terminal dimerization domain. Structural studies combined with footprinting experiments, atomic force microscopy and molecular dynamic simulations allow us to propose a model in which a dimer of EspR dimers is the minimal functional unit with two subunits binding two consecutive major grooves. The other two DNA binding domains are thus free to form higher-order oligomers and to bridge distant DNA sites in a cooperative way. These features are reminiscent of nucleoid-associated proteins and suggest a more general regulatory role for EspR than was previously suspected.
| + | |
| - | | + | |
| - | Atypical DNA recognition mechanism used by the EspR virulence regulator of Mycobacterium tuberculosis.,Blasco B, Stenta M, Alonso-Sarduy L, Dietler G, Peraro MD, Cole ST, Pojer F Mol Microbiol. 2011 Aug 30. doi: 10.1111/j.1365-2958.2011.07813.x. PMID:21883526<ref>PMID:21883526</ref>
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| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div>
| + | |
| - | <div class="pdbe-citations 3qyx" style="background-color:#fffaf0;"></div>
| + | |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Myctu]] | + | [[Category: Mycobacterium tuberculosis H37Rv]] |
| - | [[Category: Blasco, B]] | + | [[Category: Blasco B]] |
| - | [[Category: Cole, S T]] | + | [[Category: Cole ST]] |
| - | [[Category: Pojer, F]] | + | [[Category: Pojer F]] |
| - | [[Category: C-terminal dimerization domain]]
| + | |
| - | [[Category: Dimer of dimers binding dna]]
| + | |
| - | [[Category: Dna-binding]]
| + | |
| - | [[Category: N-terminal hth motif]]
| + | |
| - | [[Category: Transcription activator]]
| + | |
| - | [[Category: Transcription factor]]
| + | |
| - | [[Category: Transcription-dna complex]]
| + | |
| Structural highlights
Function
ESPR_MYCTU Virulence regulator that has both architectural and regulatory roles. Impacts cell wall functions and pathogenesis through regulation of multiple genes, including the espACD operon, which is a key ESX-1 component. Influences target gene expression positively or negatively, depending on its binding position relative to the genes it controls. Acts by binding directly to the DNA. May play a central role in regulating virulence gene expression.[1] [2] [3] [4]
References
- ↑ Raghavan S, Manzanillo P, Chan K, Dovey C, Cox JS. Secreted transcription factor controls Mycobacterium tuberculosis virulence. Nature. 2008 Aug 7;454(7205):717-21. doi: 10.1038/nature07219. PMID:18685700 doi:http://dx.doi.org/10.1038/nature07219
- ↑ Hunt DM, Sweeney NP, Mori L, Whalan RH, Comas I, Norman L, Cortes T, Arnvig KB, Davis EO, Stapleton MR, Green J, Buxton RS. Long-range transcriptional control of an operon necessary for virulence-critical ESX-1 secretion in Mycobacterium tuberculosis. J Bacteriol. 2012 May;194(9):2307-20. doi: 10.1128/JB.00142-12. Epub 2012 Mar 2. PMID:22389481 doi:http://dx.doi.org/10.1128/JB.00142-12
- ↑ Blasco B, Chen JM, Hartkoorn R, Sala C, Uplekar S, Rougemont J, Pojer F, Cole ST. Virulence regulator EspR of Mycobacterium tuberculosis is a nucleoid-associated protein. PLoS Pathog. 2012;8(3):e1002621. doi: 10.1371/journal.ppat.1002621. Epub 2012 Mar, 29. PMID:22479184 doi:http://dx.doi.org/10.1371/journal.ppat.1002621
- ↑ Blasco B, Stenta M, Alonso-Sarduy L, Dietler G, Peraro MD, Cole ST, Pojer F. Atypical DNA recognition mechanism used by the EspR virulence regulator of Mycobacterium tuberculosis. Mol Microbiol. 2011 Aug 30. doi: 10.1111/j.1365-2958.2011.07813.x. PMID:21883526 doi:10.1111/j.1365-2958.2011.07813.x
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