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  • Title: Some properties of pig kidney-cortex aldehyde reductase.
    Author: Morpeth FF, Dickinson FM.
    Journal: Biochem J; 1980 Nov 01; 191(2):619-26. PubMed ID: 7016111.
    Abstract:
    Aldehyde reductase was purified from pig kidney cortex to homogeneity by a new procedure. The molecular weight of the enzyme was estimated by sedimentation equilibrium to be 43 700 and by gel electrophoresis in the presence of sodium dodecyl sulphate to be 41 700. The enzyme is clearly a monomer. The enzyme preparation contained no significant quantities of zinc, manganese or copper and had no essential histidine or thiol groups. Changes in the absorption and fluorescence spectra of NADPH were observed on formation of the enzyme-NADPH complexes. Large changes in the fluorescence spectra were also observed in the presence of sodium barbitone or Warfarin. These changes were used as the basis of active-site titrations, which showed that the enzyme had one active site per molecule. The dissociation constants of NADPH and NADP+ from binary complexes with the enzyme were estimated in spectrophotometric titrations.
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