Aldose Reductase

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Contents

Function

Aldose Reductase (AldR) is an NADPH-dependent enzyme which reduces aldehydes and carbonyls. It reduces glucose to sorbitol in the glucose metabolism pathway.[1]

Disease

The AldR is implicated in diabetics and causing Iodine Deficiency Disorder (IDD) and its treatment involves the use of IDD inhibitors of AldR.

Structural highlights

AldR structure is of a β/α-barrel. The active site is located in the barrel core.[2]

  • Active site interactions. Water molecules are shown as red spheres.
  • Active site tunnel.

3D Structures of aldose reductase

Aldose reductase 3D structures


Human aldose reductase complex with cofactor NADP (PDB code 1ads)

Drag the structure with the mouse to rotate

References

  1. Rondeau JM, Tete-Favier F, Podjarny A, Reymann JM, Barth P, Biellmann JF, Moras D. Novel NADPH-binding domain revealed by the crystal structure of aldose reductase. Nature. 1992 Jan 30;355(6359):469-72. PMID:1734286 doi:http://dx.doi.org/10.1038/355469a0
  2. Wilson DK, Bohren KM, Gabbay KH, Quiocho FA. An unlikely sugar substrate site in the 1.65 A structure of the human aldose reductase holoenzyme implicated in diabetic complications. Science. 1992 Jul 3;257(5066):81-4. PMID:1621098

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Michal Harel, Alexander Berchansky

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