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Plant Physiology 53:440-444 (1974)
© 1974 American Society of Plant Biologists

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Articles

Nicotinamide Adenine Dinucleotide-dependent Proline Dehydrogenase in Chlorella

Alan D. McNamer1 and Cecil R. Stewart

a Department of Botany and Plant Pathology, Iowa State University, Ames, Iowa 50010

An NAD-linked dehydrogenase from Chlorella pyrenoidosa Chick catalyzing the conversion of L-proline to {Delta}1-pyrroline-5-carboxylic acid was partially purified. {Delta}1-Pyrroline-5-carboxylic acid was identified as the product by co-chromatography of it and its o-aminobenzaldehyde derivative with authentic compounds. The enzyme is NAD and L-proline specific and is not an oxidase; NADP is not inhibitory. The Michaelis constant for NAD is 0.08 mM and for proline is 0.73 mM.

1 Present address: Department of Biochemistry, College of Medicine, University of Iowa, Iowa City, Iowa 52240.






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Copyright © 1974 by the American Society of Plant Biologists