Journal
BIOORGANIC & MEDICINAL CHEMISTRY
Volume 16, Issue 15, Pages 7504-7509Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2008.06.008
Keywords
docking; lactones; lactonization; modeling; paraoxonase1
Funding
- Israel Science Foundation (ISF)
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Paraoxonase1 (PON1) is a HDL bound enzyme and many of the anti-atherogenic properties of HDL are attributed to PON1. The enzyme precise mechanism of protective action and its endogenous substrate remain elusive. PON1 hydrolyzes organophosphates, arylesters and lactones, whereas the lactones activity is assumed as the physio/pathological one. This study is aimed to predict the location of the PON1 active site within PON1 crystal structure, and the lactone structure suitability as PON1 ligand, by employing modeling techniques. Based on such calculations the ligands -PON1 interactions were characterized, and relating lactones rate of hydrolysis revealed an inverse correlation with the docking energy of the ligands -PON1 complex, and a direct correlation with the lactone side chain length. In conclusion, this study characterized the PON1 possible active site and proposes a tool which may make it possible to envisage the structure of potential endogenous and exogenous lactones such as the PON1 ligand. (C) 2008 Elsevier Ltd. All rights reserved.
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