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B6db references: 3121607

type Journal Article
authors Noguchi, T.; Fujiwara, S.
title Identification of mammalian aminotransferases utilizing glyoxylate or pyruvate as amino acceptor. Peroxisomal and mitochondrial asparagine aminotransferase
journal J Biol Chem
sel selected
ui 3121607
year (1988)
volume 263
number 3
pages 182-6
keywords Alanine Transaminase/*metabolism
abstract The subcellular distribution of asparagine:oxo-acid aminotransferase (EC in rat liver was examined by centrifugation in a sucrose density gradient. About 30% of the homogenate activity after the removal of the nuclear fraction was recovered in the peroxisomes, about 56% in the mitochondria, and the remainder in the soluble fraction from broken peroxisomes. The mitochondrial asparagine aminotransferase had identical immunological properties with the peroxisomal one. Glucagon injection to rats resulted in the increase of its activity in the mitochondria but not in the peroxisomes. Immunological evidence was obtained that the enzyme was identical with alanine:glyoxylate aminotransferase 1 (EC which had been reported to be identical with serine:pyruvate aminotransferase (EC (Noguchi, T. (1987) in Peroxisomes in Biology and Medicine (Fahimi, H. D., and Sies, H., eds) pp. 234-243, Springer-Verlag, Heidelberg). The same results as described above were obtained with mouse liver. All of alanine:glyoxylate aminotransferase 1 in livers of mammals other than rodents, which cross-react with the antibody against rat liver alanine:glyoxylate aminotransferase 1, had no asparagine aminotransferase activity.
last changed 2009/04/28 09:46

B6db references