A glutamine transaminase has been purified from the soluble portion of rat kidney homogenate; this enzyme, designated as kidney glutamine transaminase K, has different catalytic and physical properties from those previously found for the purified soluble glutamine transaminase of rat liver (liver glutamine transaminase L). Liver glutamine transaminase L is highly active toward methionine, glyox...

Yeast glutamate-cr-ketoadipate transaminase activity exhibited differences in differential heat inactivation, pH dependence, response to pyridoxal phosphate, ammonium sulfate fractionation, diethylaminoethyl cellulose chromatography, and mutational independence from other known transaminases. Both yeast glutamate-ol-ketoadipate transaminase and glutamate-pyruvate transaminase were found to be p...