FREE subscriptions for doctors and students... click here
You have 3 more open access pages.

Threonine is a hydroxylated amino acid in which the R group in the general formula NH2-CHR-COOH is -CHOHCH3. Phosphorylation at the hydroxyl group is one means by which hormones and secondary messengers activate proteins.

Threonine is an essential amino acid.

Last reviewed 01/2018