6.3.3.4 0.28 - L-N2-(2-carboxyethyl)arginine mutant enzyme V446A, pH and temperature not specified in the publication 728238 6.3.3.4 0.34 - (2'S)-methyl-L-N2-(2-carboxyethyl)arginine mutant enzyme V446A, pH and temperature not specified in the publication 728238 6.3.3.4 0.87 - L-N2-(2-carboxyethyl)arginine wild type enzyme, pH and temperature not specified in the publication 728238