A penicillin-derived group formed from benzylpenicillin via cleavage of the β-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.
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This entity has been manually annotated by the ChEBI Team.
The biological role played by a material entity when bound by a receptor of the adaptive immune system. Specific site on an antigen to which an antibody binds.