N- (3-Oxopentanoyl) -L-homoserine lactone

N- (3-Oxopentanoyl) -L-homoserine lactone is an autoinducer, a kind of chemical signal molecule which passively diffuses across the bacterial envelope and accumulates intracellularly at high bacterial densities. It may bind to a protein related to the LuxR protein of V. fischeri and causes cell density-dependent gene expression. N- (3-Oxopentanoyl) -L-homoserine can be used for research of quorum sensing[1].