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  • Title: Isolation from pig lens of two proteins with dihydrodiol dehydrogenase and aldehyde reductase activities.
    Author: Hara A, Harada T, Nakagawa M, Matsuura K, Nakayama T, Sawada H.
    Journal: Biochem J; 1989 Dec 01; 264(2):403-7. PubMed ID: 2690827.
    Abstract:
    Dimeric and monomeric proteins containing dihydrodiol dehydrogenase and aldehyde reductase activities were purified from pig lens. The dimeric enzyme of Mr 65,000 specifically oxidized the trans-dihydrodiols of naphthalene and benzene with NADP+ as a strict cofactor, and reduced alpha-diketones, aromatic aldehydes and glyceraldehyde with NADPH as a cofactor. The monomeric enzyme of Mr 35,000, although identical with aldose reductase, oxidized the trans-dihydrodiol of naphthalene at a pH optimum of 7.6. These results suggest that the two enzymes are involved in the pathogenesis of naphthalene cataract.
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