Structural determinants of subtype selectivity and functional activity of angiotensin II receptors

Bioorg Med Chem Lett. 2016 Feb 15;26(4):1355-9. doi: 10.1016/j.bmcl.2015.10.084.

Jessica Sallander ¹, Charlotta Wallinder ², Anders Hallberg ², Johan Åqvist ¹, Hugo Gutiérrez-de-Terán ³

Affiliations

1 Department of Cell and Molecular Biology, Uppsala University, Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden.
2 Department of Medicinal Chemistry, Uppsala University, Biomedical Center, Box 574, SE-751 23 Uppsala, Sweden.
3 Department of Cell and Molecular Biology, Uppsala University, Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden. Electronic address: hugo.gutierrez@icm.uu.se.

PMID: 26810314 DOI: 10.1016/j.bmcl.2015.10.084

Abstract

Agonists of the angiotensin II receptor type 2 (AT2), a G-protein coupled receptor, promote tissue protective effects in cardiovascular and renal diseases, while antagonists reduce neuropathic pain. We here report detailed molecular models that explain the AT2 Receptor selectivity of our recent series of non-peptide ligands. In addition, minor structural changes of these ligands that provoke different functional activity are rationalized at a molecular level, and related to the selectivity for the different receptor conformations. These findings should pave the way to structure based drug discovery of AT2 Receptor ligands.

Keywords

Angiotensin receptors; Conformational selection; Homology modeling; Ligand interaction; Molecular docking.

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