View source for 7ejw


==Crystal structure of FleN in complex with FleQ AAA+ doamain==
<StructureSection load='7ejw' size='340' side='right'caption='[[7ejw]], [[Resolution|resolution]] 1.98&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7ejw]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa_PAO1 Pseudomonas aeruginosa PAO1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7EJW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7EJW FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.98&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AGS:PHOSPHOTHIOPHOSPHORIC+ACID-ADENYLATE+ESTER'>AGS</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=7ejw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7ejw OCA], [https://pdbe.org/7ejw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7ejw RCSB], [https://www.ebi.ac.uk/pdbsum/7ejw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7ejw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FLEN_PSEAE FLEN_PSEAE] ATPase that plays an important role in maintaining flagellar number in Pseudomonas aeruginosa (PubMed:10629180, PubMed:28065505). Exhibits anti-activator activity against FleQ, the global transcriptional regulator of flagellar genes (PubMed:22581773, PubMed:28065505).<ref>PMID:10629180</ref> <ref>PMID:22581773</ref> <ref>PMID:28065505</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Diverse sigma factors associate with the RNA polymerase (RNAP) core enzyme to initiate transcription of specific target genes in bacteria. sigma(54)-Mediated transcription uses AAA+ activators that utilize their ATPase activity for transcription initiation. FleQ is a sigma(54)-dependent master transcriptional regulator of flagellar genes in Pseudomonas aeruginosa. The ATPase activity of FleQ is regulated via a P-loop ATPase, FleN, through protein-protein interaction. We report a high-resolution crystal structure of the AAA+ domain of FleQ in complex with antiactivator FleN. The data reveal that FleN allosterically prevents ATP binding to FleQ. Furthermore, FleN remodels the region of FleQ essential for engagement with sigma(54) for transcription initiation. Disruption of the conserved protein-protein interface, by mutation, shows motility and transcription defects in vivo and multiflagellate phenotype. Our study provides a detailed mechanism used by monoflagellate bacteria to fine-tune the expression of flagellar genes to form and maintain a single flagellum.

The antiactivator FleN uses an allosteric mechanism to regulate sigma(54)-dependent expression of flagellar genes in Pseudomonas aeruginosa.,Chanchal, Banerjee P, Raghav S, Goswami HN, Jain D Sci Adv. 2021 Oct 22;7(43):eabj1792. doi: 10.1126/sciadv.abj1792. Epub 2021 Oct , 20. PMID:34669473<ref>PMID:34669473</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7ejw" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pseudomonas aeruginosa PAO1]]
[[Category: Banerjee P]]
[[Category: Chanchal]]
[[Category: Jain D]]
[[Category: Raghav S]]