Threonine

Threonine (Thr or T) is an amino acid present in proteins.

Structure of threonine

Like all of the amino acids, threonine is formed from the COOH group and the NH₂group which are involved in peptide bonds. It has a branched side chain: CH(OH)CH₃. It is a polar amino acid.

Function of threonine

Threonine is an essential amino acid which is not produced by the body and must therefore be obtained from the diet (white cheese, poultry, meat, fish, seeds).

Threonine can be glycosylated and phosphorylated.