Sulfur amino acid

Sulfur amino acid, sulfur-containing amino acid, or SAA is an amino acid containing element sulfur.

Common sulfur amino acids include:

• Proteinogenic amino acids
• Cysteine (Cys, C)
• Methionine (Met or M), an essential amino acid in humans
• Metabolic products:
• Cystine, a cysteine dimer, and an oxidation product of cysteine
• Homocysteine (Hcy)
• Homocystine, a homocysteine dimer, and an oxidation product of homocysteine
• Cystathionine, produced by the transsulfuration pathway
• S-Adenosyl methionine (SAM, SAMe, SAM-e, AdoMet), a common cofactor in methyltransferases
• S-Adenosyl homocysteine (SAH), a side product of biomethylation by methyltransferases

See also

• Homologous series, for homo- prefix
• Cysteine metabolism
• Taurine, sulfur-containing acidic compound with amino group, but not classified as amino acid. The compound is a sulfonic acid, and amino acid definition only allows carboxylic acids.

References