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Type: Artigo de periódico
Title: Allosteric Pathways In The Ppar Gamma-rxr Alpha Nuclear Receptor Complex
Author: Ricci
Clarisse G.; Silveira
Rodrigo L.; Rivalta
Ivan; Batista
Victor S.; Skaf
Munir S.
Abstract: Understanding the nature of allostery in DNA-nuclear receptor (NR) complexes is of fundamental importance for drug development since NRs regulate the transcription of a myriad of genes in humans and other metazoans. Here, we investigate allostery in the peroxisome proliferator-activated/retinoid X receptor heterodimer. This important NR complex is a target for antidiabetic drugs since it binds to DNA and functions as a transcription factor essential for insulin sensitization and lipid metabolism. We find evidence of interdependent motions of Omega-loops and PPAR gamma-DNA binding domain with contacts susceptible to conformational changes and mutations, critical for regulating transcriptional functions in response to sequence-dependent DNA dynamics. Statistical network analysis of the correlated motions, observed in molecular dynamics simulations, shows preferential allosteric pathways with convergence centers comprised of polar amino acid residues. These findings are particularly relevant for the design of allosteric modulators of ligand-dependent transcription factors.
Subject: Proliferator-activated Receptors
Ligand-binding Domain
Signaling Pathways
Energy Landscapes
Backbone Dynamics
Orphan Receptors
Country: LONDON
Rights: aberto
Identifier DOI: 10.1038/srep19940
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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