2g0h

From Proteopedia

Revision as of 15:27, 21 February 2008

Structure-based drug design of a novel family of PPAR partial agonists: virtual screening, x-ray crystallography and in vitro/in vivo biological activities

Overview

Peroxisome proliferator-activated receptor gamma (PPARgamma) is well-known as the receptor of thiazolidinedione antidiabetic drugs. In this paper, we present a successful example of employing structure-based virtual screening, a method that combines shape-based database search with a docking study and analogue search, to discover a novel family of PPARgamma agonists based upon pyrazol-5-ylbenzenesulfonamide. Two analogues in the family show high affinity for, and specificity to, PPARgamma and act as partial agonists. They also demonstrate glucose-lowering efficacy in vivo. A structural biology study reveals that they both adopt a distinct binding mode and have no H-bonding interactions with PPARgamma. The absence of H-bonding interaction with the protein provides an explanation why both function as partial agonists since most full agonists form conserved H-bonds with the activation function helix (AF-2 helix) which, in turn, enhances the recruitment of coactivators. Moreover, the structural biology and computer docking studies reveal the specificity of the compounds for PPARgamma could be due to the restricted access to the binding pocket of other PPAR subtypes, i.e., PPARalpha and PPARdelta, and steric hindrance upon the ligand binding.

Disease

Known diseases associated with this structure: Abdominal body fat distribution, modifier of OMIM:[601487], Diabetes mellitus, insulin-resistant, with acanthosis nigricans and hypertension OMIM:[601487], Glioblastoma, susceptibility to OMIM:[601487], Insulin resistance, severe, digenic OMIM:[601487], Lipodystrophy, familial partial OMIM:[601487], Obesity, resistance to OMIM:[601487], Obesity, severe OMIM:[601487]

About this Structure

2G0H is a Single protein structure of sequence from Homo sapiens with as ligand. Full crystallographic information is available from OCA.

Reference

Structure-based drug design of a novel family of PPARgamma partial agonists: virtual screening, X-ray crystallography, and in vitro/in vivo biological activities., Lu IL, Huang CF, Peng YH, Lin YT, Hsieh HP, Chen CT, Lien TW, Lee HJ, Mahindroo N, Prakash E, Yueh A, Chen HY, Goparaju CM, Chen X, Liao CC, Chao YS, Hsu JT, Wu SY, J Med Chem. 2006 May 4;49(9):2703-12. PMID:16640330

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