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Curr Med Chem. 2004 Feb;11(4):465-76.

Sorbitol dehydrogenase: structure, function and ligand design.

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  • 1Department of Medicinal Chemistry, Victorian College of Pharmacy, Monash University (Parkville Campus), Parkville, Victoria 3052, Australia.


Sorbitol dehydrogenase (SDH), a member of the medium-chain dehydrogenase/reductase protein family and the second enzyme of the polyol pathway of glucose metabolism, converts sorbitol to fructose strictly using NAD(+) as coenzyme. SDH is expressed almost ubiquitously in all mammalian tissues. The enzyme has attracted considerable interest due to its implication in the development of diabetic complications and thus its tertiary structure may facilitate the development of drugs for the treatment of diabetes sufferers. Modelling studies suggest that SDH is structurally homologous to mammalian alcohol dehydrogenase with respect to conserved zinc binding motif and a hydrophobic substrate-binding pocket. Recently, the three-dimensional (3-D) structure of a mammalian SDH was solved, and it was found that while the overall 3-D structures of SDH and alcohol dehydrogenase are similar, the zinc coordination in the active sites of the two enzymes is different. The available structural and biochemical information of SDH are currently being utilized in a structure-based approach to develop drugs for the treatment or prevention of the complications of diabetes. This review provides an overview of the recent advances in the structure, function and drug development fields of sorbitol dehydrogenase.

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