homoserine lactone


ho·mo·ser·ine lac·tone

the cyclic ester (that is, the δ-lactone) of homoserine; formed by the reaction of cyanogen bromide on methionyl residues in peptides and proteins.

homoserine lactone

(hō″mō-sĕr′ēn lăk′tō″n) A signaling chemical used by gram-negative bacteria in quorum sensing.