Arginine is a proteinogenic amino acid with the formula (H2N) (HN)CN (H) (CH2) 3 CH (NH2)CO 2 H. It is encoded by six codons and has various functions in the body, such as nitric oxide biosynthesis and protein structure. Arginine , or L- arginine , is a semi-essential amino acid that plays a pivotal role in various metabolic pathways and physiological processes. L- arginine is a belonging amino acid belonging to the non-essential amino acid class. L- arginine is also known as (S)-2-Amino-5-guanidinopentanoic acid, Arg and Arginine . L- arginine is a cofactor for several enzymes involved in procedures, including sulphur metabolism and detoxifying certain ... L- arginine is an L-alpha-amino acid that is the L-isomer of arginine . It has a role as a nutraceutical, a biomarker, a micronutrient, an Escherichia coli metabolite and a mouse metabolite. It is a glutamine family amino acid, a proteinogenic amino acid, an arginine and a L-alpha-amino acid. It is a conjugate base of a L-argininium (1+). It is a conjugate acid of a L-argininate. It is an enantiomer of a D- arginine .