taurine biosynthesis KEGG:map00270 pathway L-cysteine degradation via taurine pathway GO:0042412 KEGG:map00430 PMID:18219548 UPa:UPA00012 2-aminoethanesulfonic acid biosynthesis KEGG:map01100 PMID:10461879 Biosynthesis of taurine (2-aminoethanesulfonic acid), a sulphur-containing amino acid derivative important in the metabolism of fats. Taurine is a derivative of the sulphur-containing (sulfhydryl) amino acid cysteine. Taurine is abundant in the tissues of many animals (metazoa). It is also found in plants, fungi, and some bacterial species, but at lower levels. organosulfur biosynthesis L-cysteine metabolism