cysteine
cysteine A non‐essential amino acid, but nutritionally important since it spares the essential amino acid methionine. In addition to its role in protein synthesis, cysteine is important as the precursor of taurine, in formation of coenzyme A from the vitamin pantothenic acid and in formation of the tripeptide glutathione. It is used as a dough ‘improver’ in baking. See also cystine.
cysteine
cysteine An aliphatic, polar (see POLAR MOLECULE), alpha-amino acid that contains a sulphydryl group.
cysteine
cysteine
cysteine (sis-ti-een) n. a sulphur-containing amino acid that is an important constituent of many enzymes.
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