Cysteamine oxidation by lentil seedling amine oxidase. | LitMetric

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Cysteamine oxidation by lentil seedling amine oxidase. | LitMetric

Cysteamine oxidation by lentil seedling amine oxidase.

R Medda A Padiglia A Lorrai C De Marco G Floris

Biochem Mol Biol Int

Institute of Biological Chemistry, University of Cagliari, Italy.

Published: February 1997

Cysteamine is oxidatively deaminated by lentil amine oxidase. It shows saturation kinetic K(m) = 9 x 10(-4) M like other substrates, but the aldehyde produced leads to loss of enzyme activity, which is restored by dialysis. When putrescine is the substrate of the amine oxidase cysteamine behaves like a competitive inhibitor, and shows Ki = 5 x 10(-5) M. The possible involvement of the oxidation of cysteamine and the inhibitory effects of thioacetaldehyde in the cystamine oxidation by amine oxidase is discussed.

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http://dx.doi.org/10.1080/15216549700201411	DOI Listing

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