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  • Title: Kinetic properties of rat kidney D-amino acid oxidase associated with peroxisomes.
    Author: Huynh MS, Horiike K, Tojo H, Katagiri M, Yamano T.
    Journal: Comp Biochem Physiol B; 1985; 80(3):425-30. PubMed ID: 2860994.
    Abstract:
    In contrast to hog kidney D-amino acid oxidase, the v vs s plots of D-amino acid oxidase in homogenized rat kidney did not have the form of a rectangular hyperbola, and showed an apparent negative cooperativity. After subcellular fractionation of rat kidney, both of the oxidases in the supernatant fraction and the peroxisomal fraction showed Michaelis-Menten type kinetics. The Km values for D-alanine and D-proline of the peroxisomal fraction were significantly lower than those of the supernatant fraction. The partially purified enzyme from the peroxisomal fraction showed the same kinetic properties as the supernatant fraction. These facts suggest that the two types of rat kidney D-amino acid oxidase were originally identical and that some interaction between the enzyme and peroxisomes is physiologically important for the function of the enzyme.
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