Gene expression in Drosophila: post-translational modification of aldehyde oxidase and xanthine dehydrogenase.
Maroon-like homozygotes are completely deficient for xanthine dehydrogenase (XDH) and aldehyde oxidase (AO), however, ma-l is not a structural locus for either enzyme. Quantitative immunoelectrophoresis of ma-l and wild type extracts suggests that the ma-l function must be post-translational. To determine whether the ma-l function involves some direct physical changes in XDH and/or AO the enzymes were characterized with respect to temperature sensitivity and behavior in gel sieving electrophoresis. Since the XDH and AO from complementary ma-l heterozygotes is more thermolabile and different in shape from wild type XDH and AO, we conclude that ma-l is involved in a post-translational modification of these enzymes.
D000445:Aldehyde Oxidoreductases / Q000032:analysis / Q000235:genetics*; D000818:Animals; D004330:Drosophila / Q000201:enzymology / Q000235:genetics*; D005816:Genetic Complementation Test; D007122:Immunoelectrophoresis; D007658:Ketone Oxidoreductases / Q000235:genetics*; D009154:Mutation; D011487:Protein Conformation; D014968:Xanthine Dehydrogenase / Q000032:analysis / Q000235:genetics*
D014968:Xanthine Dehydrogenase; D000445:Aldehyde Oxidoreductases; D007658:Ketone Oxidoreductases