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Cysteine

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Cysteine is a sulphur-containing amino acids in which the R group in the general formula NH2-CHR-COOH is -CH2-SH. Two cysteine molecules in proximity can react at their sulphydryl groups to form a disulphide cross-bridge. This reaction is important as a determinant of the folding of peptide and polypeptide chains.


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