Reference: Brändén CI, et al. (1973) Structure of liver alcohol dehydrogenase at 2.9-angstrom resolution. Proc Natl Acad Sci U S A 70(8):2439-42

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Abstract


The conformation of the polypeptide chain in horse liver alcohol dehydrogenase (EC 1.1.1.1), as well as the binding sites for some inhibitor molecules, have been determined from x-ray crystallographic data to a resolution of 2.9 A. Each subunit of the dimeric molecule is organized into two parts unequal in size and separated by a wide and deep active-site cleft. The adenosine moiety of the coenzyme is bound within the smaller region. Interactions between these coenzyme-binding substructures define the subunit contact area of the molecule. The "catalytic" zinc atoms are bound at the bottom of the clefts about 20 A from the surface of the molecule. The coenzyme binding region has a main-chain conformation very similar to a corresponding region in lactate and malate dehydrogenase. It is suggested that this substructure is a general one for binding of nucleotides and, in particular, the coenzyme NAD(+).

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Journal Article
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Brändén CI, Eklund H, Nordström B, Boiwe T, Söderlund G, Zeppezauer E, Ohlsson I, Akeson A
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