Isoprenoid quinones of the genus Legionella

Abstract
Legionella spp. were examined for isoprenoid quinones by reverse-phase thin-layer chromatography. All strains contained 3 or more ubiquinones (Q9, Q10, Q11, Q12, Q13) which were useful for placing the species into 1 of 3 distinct groups. Group 1 contained L. longbeachae, L. bozemanii, L. dumoffii and L. gormanii; group 2 contained only L. micdadei; and group 3 contained only L. pneumophila. The identities of the quinones were established by UV spectroscopy and mass spectrometry.