In Anfinsen's experiment, beta-mercaptoethanol reduced this amino acid, causing proteins to unfold reversibly.
Palmitoylation most often occurs on this amino acid in proteins. Proteases that act on this residue include papain and a group of aspartate-directed enzymes that force the proteolytic cascade during apoptosis. PDI oxidizes this amino acid. Zinc fingers are especially rich in histidine and this other amino acid. In Anfinsen's experiment, beta-mercaptoethanol reduced this amino acid, causing proteins to unfold reversibly. This compound can be synthesized from (*) methionine and is nearly equivalent to serine, except its side chain is a thiol, not an alcohol. Tertiary structure of proteins relies on covalent bonds between these amino acids, called disulfide bonds. For 10 points, name this amino acid symbolized by a C.
Palmitoylation most often occurs on this amino acid in proteins.
cysteine [or Cys; or C before it is read]