l glutamine

L-Glutamine (L-Glutamic acid 5-amide), a non-essential amino acid, is synthesized from glutamic acid and ammonia.

L-Alanyl-L-glutamine (Ala-Gln), a dipeptide composed of alanine and Gln, is an alternative supplement to L-glutamine in the production of biopharmaceuticals with better solubility and stability than glutamine (Gln).

Aceglutamide (N2-Acetylglutamine) is an acetyl derivative of the amino acid L-glutamine, used to improve memory.

Phenylacetylglutamine (NSC 203800)is a normal constituent of human urine, but other mammals such as the dog, cat, rat, monkey, sheep, and horse do not excrete this compound. Phenylacetylglutamine is a major nitrogenous metabolite that accumulates in uremia. Phenylacetylglutamine also is a microbial metabolite found in Christensenellaceae, Lachnospiraceae, and Ruminococcaceae.

5'-Guanylic acid disodium salt (GMP-5) is a purine ribonucleoside monophosphate. L-Glutamic acid and guanosine monophosphate are biosynthesized from xanthylic acid and L-glutamine via GMP synthase [glutamine-hydrolyzing]. Guanosine triphosphate and guanosine monophosphate are biosynthesized from diguanosine tetraphosphate via bis(5'-nucleosyl)-tetraphosphatase [asymmetrical]. In humans, guanosine monophosphate is involved in the kanamycin, telithromycin, tobramycin, and erythromycin action pathways, and several metabolic disorders including AICA-ribosiduria, adenosine deaminase deficiency, adenine phosphoribosyltransferase deficiency (aprt), and 2-hydroxyglutric aciduria (D and L form) pathways. Guanosine monophosphate is also found in foods like onion-family vegetables, millet, Chinese water chestnut, and red rice, serving as a potential biomarker for the consumption of these foods.

Histidine (abbreviated as His or H) is an alpha-amino acid. The L-isomer is one of the 22 proteinogenic amino acids, i.e., the building blocks of proteins. It is classified as a charged, polar because of the hydrophilic nature of the imidazole side chain.

L-Pyroglutamic acid (pidolic acid), a cyclized derivative of the L-GLUTAMIC ACID, can elevate blood levels. This function may be associated with problems of GLUTATHIONE or GLUTAMINE metabolism.

L-Citrulline, an amino acid, is derived from ornithine during the catabolism of proline, glutamate, or glutamine, and also from L-arginine via the arginine-citrulline pathway.