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  • Title: Molecular cloning, heterologous expression, and characterization of human glyoxalase II.
    Author: Ridderström M, Saccucci F, Hellman U, Bergman T, Principato G, Mannervik B.
    Journal: J Biol Chem; 1996 Jan 05; 271(1):319-23. PubMed ID: 8550579.
    Abstract:
    A clone encoding glyoxalase II has been isolated from a human adult liver cDNA library. The sequence of 1011 base pairs consists of a full-length coding region of 780 base pairs, corresponding to a protein with a calculated molecular mass of 28,861 daltons. Identities (50-60%) were found to partial 5' and 3' cDNA sequences from Arabidopsis thaliana as well as within a limited region of glutathione transferase I cDNA from corn. A vector was constructed for heterologous expression of glyoxalase II in Escherichia coli. For optimal yield of enzyme, silent random mutations were introduced in the 5' coding region of the cDNA. A yield of 25 mg of glyoxalase II per liter of culture medium was obtained after affinity purification with immobilized glutathione. The recombinant enzyme had full catalytic activity and kinetic parameters indistinguishable from those of the native enzyme purified from human erythrocytes.
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