In enzymology, a D-ornithine 4,5-aminomutase (EC 5.4.3.5) is an enzyme that catalyzes the chemical reaction We specialize in amino acids and nutritional supplement products. We also offer L-arginine base L-arginine Hcl, L-cystine, L-cysteine base, L-cysteine Hcl anhydrous, L-cysteine Hcl monohydrate, creatine monohydrate, alpha-ketoglutarate acid and L-ornithionine Hcl. Our supplement products ...