View source for 5tnh


==Crystal structure of the E153Q mutant of the CFTR inhibitory factor Cif containing the adducted 17,18-EpETE hydrolysis intermediate==
<StructureSection load='5tnh' size='340' side='right'caption='[[5tnh]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5tnh]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseab Pseab]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TNH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TNH FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=7MS:(5Z,8Z,11Z,14Z,17R,18R)-17,18-dihydroxyicosa-5,8,11,14-tetraenoic+acid'>7MS</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3kd2|3kd2]], [[4dmc|4dmc]]</div></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PA14_26090 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=208963 PSEAB])</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=5tnh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tnh OCA], [https://pdbe.org/5tnh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5tnh RCSB], [https://www.ebi.ac.uk/pdbsum/5tnh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5tnh ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Pseudomonas aeruginosa secretes an epoxide hydrolase with catalytic activity that triggers degradation of the cystic fibrosis transmembrane conductance regulator (CFTR) and perturbs other host defense networks. Targets of this CFTR inhibitory factor (Cif) are largely unknown, but include an epoxy-fatty acid. In this class of signaling molecules, chirality can be an important determinant of physiological output and potency. Here we explore the active-site chemistry of this two-step alpha/beta-hydrolase and its implications for an emerging class of virulence enzymes. In combination with hydrolysis data, crystal structures of 15 trapped hydroxyalkyl-enzyme intermediates reveal the stereochemical basis of Cif's substrate specificity, as well as its regioisomeric and enantiomeric preferences. The structures also reveal distinct sets of conformational changes that enable the active site to expand dramatically in two directions, accommodating a surprising array of potential physiological epoxide targets. These new substrates may contribute to Cif's diverse effects in vivo, and thus to the success of P. aeruginosa and other pathogens during infection.

Active-Site Flexibility and Substrate Specificity in a Bacterial Virulence Factor: Crystallographic Snapshots of an Epoxide Hydrolase.,Hvorecny KL, Bahl CD, Kitamura S, Lee KSS, Hammock BD, Morisseau C, Madden DR Structure. 2017 May 2;25(5):697-707.e4. doi: 10.1016/j.str.2017.03.002. Epub 2017, Apr 6. PMID:28392259<ref>PMID:28392259</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5tnh" style="background-color:#fffaf0;"></div>

==See Also==
*[[CFTR inhibitory factor|CFTR inhibitory factor]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Pseab]]
[[Category: Hvorecny, K L]]
[[Category: Madden, D R]]
[[Category: Epoxide hydrolase]]
[[Category: Hydrolase]]
[[Category: Hydroxyalkyl-enzyme intermediate]]