Plant Physiol. Drug Metab Dispos
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Plant Physiology 70:340-343 (1982)
© 1982 American Society of Plant Biologists

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Articles

Studies on the Aminotransferases Participating in the Glycolate Metabolism of the Alga Mougeotia1

U. Winkler, W. Säftel and H. Stabenau

Universität Oldenburg, Fachbereich Biologie, Postfach 2503, D-2900 Oldenburg, West Germany

Microbodies from Mougeotia spec., Strain 168.80 contain aminotransferases for conversion of glyoxylate to glycine and serine to hydroxypyruvate. Formation of glycine is possible at highest rates with alanine and glutamate as amino donors, whereas for deamination of serine, pyruvate and glyoxylate are the most convenient substrates. A serine hydroxymethyl-transferase was found exclusively in the mitochondrial fraction. There are indications that this enzyme is bound to the mitochondrial membranes. The activities of all transferases are increased under culture conditions stimulating the synthesis of glycolate.

1 Supported by the Deutsche Forschungsgemeinschaft.




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K. Iwamoto and T. Ikawa
A Novel Glycolate Oxidase Requiring Flavin Mononucleotide as the Cofactor in the Prasinophycean Alga Mesostigma viride
Plant Cell Physiol., August 1, 2000; 41(8): 988 - 991.
[Abstract] [Full Text] [PDF]


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Copyright © 1982 by the American Society of Plant Biologists