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cysteine residue (Cys, C)
Side-chain is -CH2-SH.
Thus Cys contains sulfhydryl (-SH) or thiol group.
Cysteine residues may react via
1) oxidation to form
a) disulfides
b) sulfoxides
c) sulfones
d) sulfates
2) alkylation
3) nitrosylation by nitric oxide
Related
cysteine
General
sulfur residue
Properties
MISC-INFO: SYMBOL C