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. 1977 Jan 1;161(1):177-9.
doi: 10.1042/bj1610177.

Identity of rat kidney histidine-pyruvate aminotransferase with glutamine-oxo acid aminotransferase

T Noguchi, E Okuno, R Kido

Identity of rat kidney histidine-pyruvate aminotransferase with glutamine-oxo acid aminotransferase

T Noguchi et al. Biochem J. .

Abstract

Histidine-pyruvate aminotransferase and glutamine-phenylpyruvate aminotransferase were purified from rat kidney by the same procedure. The ratio of the two activities remained constant during purification and was unchanged by a variety of treatments of the purified enzyme. Glutamine was found to act as a competitive inhibitor of histidine-pyruvate aminotransferase. These results suggest that rat kidney histidine-pyruvate aminotransferase is identical with glutamine-oxo acid aminotransferase. Identity of the two enzymes in other tissues of rats is discussed.

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