7x9s: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[7x9s]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Listeria_monocytogenes Listeria monocytogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7X9S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7X9S FirstGlance]. <br> | <table><tr><td colspan='2'>[[7x9s]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Listeria_monocytogenes Listeria monocytogenes]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7X9S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7X9S FirstGlance]. <br> | ||
</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=7x9s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7x9s OCA], [https://pdbe.org/7x9s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7x9s RCSB], [https://www.ebi.ac.uk/pdbsum/7x9s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7x9s ProSAT]</span></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]] 3.11Å</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=7x9s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7x9s OCA], [https://pdbe.org/7x9s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7x9s RCSB], [https://www.ebi.ac.uk/pdbsum/7x9s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7x9s ProSAT]</span></td></tr> | |||
</table> | </table> | ||
== Function == | == Function == | ||
Latest revision as of 20:49, 29 November 2023
Crystal structure of a complex between the antirepressor GmaR and the transcriptional repressor MogRCrystal structure of a complex between the antirepressor GmaR and the transcriptional repressor MogR
Structural highlights
FunctionPublication Abstract from PubMedThe pathogenic Listeria monocytogenes bacterium produces the flagellum as a locomotive organelle at or below 30 degrees C outside the host, but it halts flagellar expression at 37 degrees C inside the human host to evade the flagellum-induced immune response. Listeria monocytogenes GmaR is a thermosensor protein that coordinates flagellar expression by binding the master transcriptional repressor of flagellar genes (MogR) in a temperature-responsive manner. To understand the regulatory mechanism whereby GmaR exerts the antirepression activity on flagellar expression, we performed structural and mutational analyses of the GmaR-MogR system. At or below 30 degrees C, GmaR exists as a functional monomer and forms a circularly enclosed multidomain structure via an interdomain interaction. GmaR in this conformation recognizes MogR using the C-terminal antirepressor domain in a unique dual binding mode and mediates the antirepressor function through direct competition and spatial restraint mechanisms. Surprisingly, at 37 degrees C, GmaR rapidly forms autologous aggregates that are deficient in MogR neutralization capabilities. Structural basis of flagellar motility regulation by the MogR repressor and the GmaR antirepressor in Listeria monocytogenes.,Cho SY, Na HW, Oh HB, Kwak YM, Song WS, Park SC, Jeon WJ, Cho H, Oh BC, Park J, Kang SG, Lee GS, Yoon SI Nucleic Acids Res. 2022 Oct 28;50(19):11315-11330. doi: 10.1093/nar/gkac815. PMID:36283692[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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