Structural insights into the mechanism and inhibition of the beta-Hydroxydecanoyl-Acyl carrier protein dehydratase from pseudomonas aeruginosa
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Fatty acid biosynthesis is an essential component of metabolism in both eukaryotes and prokaryotes. The fatty acid biosynthetic pathway of Gram-negative bacteria is an established therapeutic target. Two homologous enzymes FabA and FabZ catalyze a key step in fatty acid biosynthesis; both dehydrate hydroxyacyl fatty acids that are coupled via a phosphopantetheine to an acyl carrier protein (ACP). The resulting trans-2-enoyl-ACP is further polymerized in a processive manner. FabA, however, carries out a second reaction involving isomerization of trans-2-enoyl fatty acid to cis-3-enoyl fatty acid. We have solved the structure of Pseudomonas aeruginosa FabA with a substrate allowing detailed molecular insight into the interactions of the active site. This has allowed a detailed examination of the factors governing the second catalytic step. We have also determined the structure of FabA in complex with small molecules (so-called fragments). These small molecules occupy distinct regions of the active site and form the basis for a rational inhibitor design program. (C) 2012 Elsevier Ltd. All rights reserved.
Moynie , L , Leckie , S M , McMahon , S A , Duthie , F G , Koehnke , A , Taylor , J W , Alphey , M S , Brenk , R , Smith , A D & Naismith , J H 2013 , ' Structural insights into the mechanism and inhibition of the beta-Hydroxydecanoyl-Acyl carrier protein dehydratase from pseudomonas aeruginosa ' Journal of Molecular Biology , vol. 425 , no. 2 , pp. 365-377 . DOI: 10.1016/j.jmb.2012.11.017
Journal of Molecular Biology
(c) The authors. This is an open access article, available from http://www.sciencedirect.com
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