This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in


Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

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.

Related pages

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page