Technical Information Amino Acids Threonine

Threonine

Threonine, represented by the symbol Thr or T, is an amino acid essential for protein biosynthesis. It comprises an α-amino group, a carboxyl group, and a side chain that contains a hydroxyl group, rendering it a polar and uncharged amino acid. Bacteria like E. coli synthesize threonine from aspartate. Threonine side chains frequently form hydrogen bonds, leading to the formation of common small motifs involving interactions with serine. These motifs include ST turns, ST motifs often found at the beginning of alpha helices, and ST staples typically located in the middle of alpha helices. Threonine is one of the two proteinogenic amino acids that possess two stereogenic centers, the other being isoleucine. It is encoded by all codons that start with AC (ACU, ACC, ACA, and ACG).

Structure
CAS Number 72-19-5
Classification

Polar amino acids, including

Cysteine

Glycine

Glutamine

Threonine

Tyrosine

Serine

Asparagine
Categories
Threonine Biosynthesis Compounds
56-84-8 3-Phosphonooxypyruvate
22138-53-0 4-Phospho-L-aspartate
L-Aspartate 4-semialdehyde
672-15-1 L-Homoserine
O-Phospho-L-homoserine
72-19-5 L-Threonine

Threonine and Derivatives:

Threonine:

Derivatives: