Abstract
1. 1. Homoserine dehydrogenase I (l-homoserine:NADP+ oxidoreductase, EC 1.1.1.3) of Escherichia coli is inactivated with apparent first-order kinetics by exposure at pH 9 in Tris buffer. This inactivation is accompanied by desensitization of the enzyme towards threonine. 2. 2. L-Aspartate and ATP, the substrates of the associated activity, β-aspartokinase I (ATP:L-aspartate 4-phosphotransferase, EC 2.7.2.4) protect against the desensitization of homoserine dehydrogenase.
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Schedule a callMore From: Biochimica et Biophysica Acta (BBA) - Enzymology and Biological Oxidation
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