Abstract
Ethanol oxidation by nicotinoprotein alcohol dehydrogenase (np-ADH) from the bacterium Amycolatopsis methanolica is inhibited by trans-4-(N,N-dimethylamino)-cinnamaldehyde through direct binding to the catalytic zinc ion in a substrate-like geometry. This binding is accompanied by a characteristic red shift of the aldehyde absorbance from 398 nm to 467 nm. Np-ADH is structurally related to mammalian ADH class I, and a model of np-ADH shows how the cinnamaldehyde derivative can be accommodated in the active site of the nicotinoprotein, correlating the structural and enzymological data.
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Piersma, S.R., Norin, A., de Vries, S. et al. Inhibition of Nicotinoprotein (NAD+-Containing) Alcohol Dehydrogenase by trans-4-(N,N-Dimethylamino)-Cinnamaldehyde Binding to the Active Site. J Protein Chem 22, 457–461 (2003). https://doi.org/10.1023/B:JOPC.0000005461.53788.ee
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DOI: https://doi.org/10.1023/B:JOPC.0000005461.53788.ee