2qo8

From Proteopedia

Revision as of 16:40, 21 February 2008

Crystal structure of the complex of hcaii with an indane-sulfonamide inhibitor

Overview

Indanesulfonamides are interesting lead compounds for designing selective inhibitors of the different isoforms of the zinc enzyme Carbonic Anhydrase (CA). Herein, we report for the first time the X-ray crystal structure of two such derivatives, namely indane-5-sulfonamide and indane-2-valproylamido-5-sulfonamide, in complex with the physiologically dominant human isoform II. The structural analysis reveals that, although these two inhibitors have quite similar chemical structures, the arrangement of their indane ring within the enzyme active site is significantly diverse. Thus, our findings suggest that the introduction of bulky substituents on the indane-sulfonamide ring may alter the binding mode of this potent class of CA inhibitors, although retaining good inhibitory properties. Accordingly, the introduction of bulky tail moieties on the indane-sulfonamide scaffold may represent a powerful strategy to induce a desired physicochemical property to an aromatic sulfonamide or to obtain inhibitors with diverse inhibition profiles and selectivity for various mammalian CAs.

About this Structure

2QO8 is a Single protein structure of sequence from Homo sapiens with , , and as ligands. Active as Carbonate dehydratase, with EC number 4.2.1.1 Full crystallographic information is available from OCA.

Reference

Carbonic Anhydrase Inhibitors: Binding of Indanesulfonamides to the Human Isoform II., D'Ambrosio K, Masereel B, Thiry A, Scozzafava A, Supuran CT, De Simone G, ChemMedChem. 2007 Dec 27;. PMID:18161740

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