Term Name:	3,3-dimethylcystein-S-yl group
Synonyms:	(1-amino-1-carboxy-2-methylpropan-2-yl)sulfanyl, 3,3-dimethylcystein-S-yl, penicillamin-S-yl, penicillamin-S-yl group
Definition:	A penicillin-derived group formed from benzylpenicillin via cleavage of the beta-lactam and thiazolidine rings to afford a dimethyl-substituted cysteine entity able to link to the thiol group of a protein cysteine residue through a sulfur-sulfur bond.
Ontology:	ChEBI [CHEBI:139233]  ( EBI )