ID 2.6.1.126 DE L-aspartate:5-guanidino-3-methyl-2-oxopentanoate transaminase. CA (3R)-5-guanidino-3-methyl-2-oxopentanoate + L-aspartate = (3R)-3-methyl- CA L-arginine + oxaloacetate. CC -!- Requires pyridoxal 5'-phosphate. CC -!- The enzyme, characterized from several bacterial species, CC participates in the biosynthesis of the rare amino acid (3R)-3- CC methyl-L-arginine. CC -!- The enzyme from Streptomyces arginensis also catalyzes the activity CC of EC 2.6.1.125. DR M1T1K4, ARGM_STREL ; D5FKJ2, MRSB_PSESY ; //