Acta Crystallographica Section D

Biological Crystallography

Volume 58, Part 4 (April 2002)



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Acta Cryst. (2002). D58, 622-626    [doi:10.1107/S0907444902002378]

The structure of human recombinant aldose reductase complexed with the potent inhibitor zenarestat

T. Kinoshita, H. Miyake, T. Fujii, S. Takakura and T. Goto

Abstract: The crystal structure of the complex of human recombinant aldose reductase (AR) with zenarestat, one of its potent inhibitors, has been solved at 2.5  Å resolution. Zenarestat fits neatly in the hydrophobic active site and induces unique and dramatic conformational changes. For example, the benzene ring of zenarestat occupies a gap in the side chains of Leu300 and Trp111 that interact directly and forms a CH-[bold pi] interaction in the native holoenzyme. As a result, the benzene ring of the inhibitor and these side chains form a CH-[bold pi]-[bold pi] interaction. Such structural information is key to understanding the mode of action of this class of inhibitors and for rational design of better therapeutics.

PDB reference: 1iei

Online 22 March 2002


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