4.1.2.5 additional information - specific activity of 31 units/mg, using L-threonine as substrate, pH and temperature not specified in the publication 713884 4.1.2.5 additional information - the crude extract has a specific activity of 0.02 units/mg, the purified enzyme has a specific activity of 0.32 units/mg, pH and temperature not specified in the publication 713884