Taurine (a sulfur-containing β-amino acid), creatine (a metabolite of arginine, glycine and
methionine), carnosine (a dipeptide; β-alanyl-l-histidine), and 4-hydroxyproline (an imino …

A protein consists of amino acids (AA) linked by peptide bonds. Dietary protein is hydrolyzed
by proteases and peptidases to generate AA, dipeptides, and tripeptides in the lumen of the …

As a functional amino acid (AA), L-arginine (Arg) serves not only as a building block of
protein but also as an essential substrate for the synthesis of nitric oxide (NO), creatine …

Recent years have witnessed the great advantages of reducing dietary crude protein (CP)
with free amino acids (AA) supplementation for sustainable swine industry, including saving …

A deficiency of dietary protein or amino acids has long been known to impair immune
function and increase the susceptibility of animals and humans to infectious disease …

Arginine is a conditionally essential amino acid. To elucidate the influence of l-arginine on
the activation of endogenous antioxidant defence, male Wistar rats were orally administered …

Based on growth or nitrogen balance, amino acids (AA) had traditionally been classified as
nutritionally essential (indispensable) or non-essential (dispensable) for animals and …

As an essential precursor for the synthesis of proteins and other molecules with enormous
biological importance (including nitric oxide, urea, ornithine, proline, polyamines, glutamate …

L-arginine, an endogenous amino acid, is a safe substance that can be found in food. The
compound is involved in synthesis of various products responsible for regulatory functions in …

▪ Abstract Nitric oxide (NO) is synthesized from L-arginine by NO synthase (NOS). As an
endothelium-derived relaxing factor, a mediator of immune responses, a neurotransmitter, a …