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Although D-amino acids can be found in nature, only the L-isomers are used to form proteins. The D-isomers are most often found attached to the cell walls of bacteria and in antibiotics that attack bacteria. The presence of D-isomers protects the bacteria from enzymes. These enzymes are generated by the host organism to protect itself from bacterial infection by hydrolyzing the proteins in the bacterial cell wall.
D-Asparagine
D-Aspartic Acid, also known as Aminosuccinic acid or asparagic acid, is an alpha-amino acid and produced in mammals from oxaloacetate by transamination and can be generated from citrulline ...
D-Glutamic Acid, also known as 2-Aminoglutaric acid, is a proteinogenic amino acid and a non-essential amino acid, and it plays an important role in neural activation. Ungraded products ...
D-Glutamine, also known as 2-Amino-4-carbamoylbutanoic acid, is a conditionally essential amino acid and used to reverse cachexia in patients with advanced cancer or AIDS. Ungraded products ...
D-Histidine Hydrochloride, Monohydrate
D-Lysine Hydrochloride
D-Ornithine Hydrochloride
D-Phenylalanine
D-Threonine, also known as 2-Amino-3-hydroxybutanoic acid, is an essential amino acid that is classified as polar. It bears a chiral side chain, as well as the amino acid, isoleucine. ...
D-Tryptophan, also known as 2-Amino-3-(1H-indol-3-yl)propanoic acid, is considered an essential amino acid in the human diet and can be used in structural or enzyme proteins. Ungraded ...
D-Tyrosine - Ungraded products supplied by Spectrum are indicative of a grade suitable for general industrial use or research purposes and typically are not suitable for human consumption ...