This amino acid is the most common inhibitory neurotransmitter in the central nervous system.
The trimethylated derivative of this species is used to remethylate homocysteine in a reaction catalyzed by betaineÂ­homocysteine SÂ­methyltransferase. The C4, C5, and N7 atoms of the purine ring are derived fromthis compound. Along with glutamic acid and cysteine, this amino acid is found in the antioxidant glutathione. This compound is a byproduct of a reaction that transforms tetrahydrofolate into N5,N10Â­methyleneÂ­THF. In that reaction, a (*) hydroxymethyl group is removed from serine. Strychnine is an antagonist for the ligandÂ­gated chloride channel that binds this compound. Along with proline, this amino acid is found in unstructured loops; it is also abundant in collagen with proline and hydroxyproline. This amino acid is the most common inhibitory neurotransmitter in the central nervous system. For 10 points, name this simplest proteinogenic amino acid, which is achiral.
The trimethylated derivative of this species is used to remethylate homocysteine in a reaction catalyzed by betaineÂ­homocysteine SÂ­methyltransferase.
glycine [accept Gly or G]