Studies on the Aminotransferases Participating in the Glycolate Metabolism of the Alga Mougeotia | Zendy

U. Winkler | Zendy; W. Säftel | Zendy; H. Stabenau | Zendy

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

Author(s) -

U. Winkler,

W. Säftel,

H. Stabenau

Publication year - 1982

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.70.2.340

Subject(s) - glyoxylate cycle , serine , glycine , glycine cleavage system , biochemistry , alanine , transferase , biology , chemistry , enzyme , amino acid

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.

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