Copper and zinc superoxide dismutase from the liver of bullfrog Rana catesbeiana
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説明
Abstract 1. 1. A copper-zinc superoxide dismutase was purified to electrophoretic homogeneity from the liver of bullfrog, Rana catesbeiana. The enzyme has a mol. wt of 32,000 and is composed of two identical subunits, each containing one copper and one zinc atom. 2. 2. The amino acid composition of the enzyme differs in the contents of glutamic acid, glycine, alanine and valine from that of the enzymes from other species. The N-terminal amino acid is methionine. The sequence of 24 residues in the N-terminal region shows a good homology with that of the human, bovine and yeast enzymes. 3. 3. As judged by a double immunodiffusion test with the antibody prepared against the frog liver enzyme, the enzymes of the frog erythrocyte and tadpole liver and erythrocyte are immunologically the same as that of the frog liver enzyme.
収録刊行物
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- Comparative Biochemistry and Physiology Part B: Comparative Biochemistry
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Comparative Biochemistry and Physiology Part B: Comparative Biochemistry 77 125-130, 1984-01-01
Elsevier BV
