512 results about "Cysteine" patented technology

Cysteine (symbol Cys or C; /ˈsɪstiiːn/) is a semiessential proteinogenic amino acid with the formula HO₂CCH(NH₂)CH₂SH. The thiol side chain in cysteine often participates in enzymatic reactions, as a nucleophile. The thiol is susceptible to oxidation to give the disulfide derivative cystine, which serves an important structural role in many proteins. When used as a food additive, it has the E number E920. It is encoded by the codons UGU and UGC.