type	Journal Article
authors	Noguchi, T.; Takada, Y.; Kido, R.
title	Glutamate-glyoxylate aminotransferase in rat liver cytosol. Purification, properties and identity with alanine-2-oxoglutarate aminotransferase
journal	Hoppe Seylers Z Physiol Chem
Activity	2.6.1.4
sel	selected
ui	590935
year	(1977)
volume	358
number	12
pages	1533-42
keywords	Alanine Transaminase/*metabolism
abstract	After cortisone injection, virtually identical increases in rat liver cytosol alanine-2-oxoglutarate aminotransferase and glutamate- glyoxylate aminotransferase activities were observed. The two activities were co-purified to homogeneity from rat liver cytosol. The purified enzyme was specific for L-alanine with 2-oxoglutarate as amino acceptor. With glyoxylate, however, the enzyme utilized various L-amino acids as amino donors in the following order of activity: glutamate greater than alanine greater than glutamine greater than methionine. The ratio of alanine-2-oxoglutarate aminotransferase activity to glutamate-glyoxylate aminotransferase activity remained constant during purification and was unchanged by a variety of treatments of the purified enzyme. These results suggest that glutamate-glyoxylate aminotransferase is identical with alanine-2-oxoglutarate aminotransferase. Evidence was obtained that the two enzyme activities in the cytosol of dog, cat and human liver are also properties of the same protein.
last changed	2009/03/24 16:15