Valine (symbol Val or V) is an α-amino acid that is used in the biosynthesis of proteins. ... IUPAC-IUB Joint Commission on Biochemical Nomenclature.Function: The essential amino acid L-valine (Val) is needed for the synthesis of proteins. It is also used as an energy fuel; its complete oxidation requires thiamin, riboflavin, niacin, vitamin B6, vitamin B12, pantothenate, biotin, lipoate, ubiquinone, magnesium, and iron. 

Valine is a branched-chain essential amino acid that has stimulant activity. It promotes muscle growth and tissue repair. It is a precursor in the penicillin biosynthetic pathway.

Valine is one of three branched-chain amino acids, meaning it has a chain branching off to one side of its molecular structure. Valine helps stimulate muscle growth and regeneration and is involved in energy production

Besides structural function in bacterial cell wall, D-amino acids have been associated to growth fitness and to processes such as biofilm development, spore germination and signaling. Bacteria develop unique metabolic pathways for multiple D-amino acids, such as amino acid racemization or epimerization.

D VALINE FOR BIOCHEMISTRY