Mr. Liles et Np. Cianciotto, ABSENCE OF SIDEROPHORE-LIKE ACTIVITY IN LEGIONELLA-PNEUMOPHILA SUPERNATANTS, Infection and immunity, 64(5), 1996, pp. 1873-1875
Conflicting reports have been given as to the existence of a Legionell
a pneumophila siderophore. Hence, we rigorously examined the reported
siderophore-like activity using the chrome azurol S indicator. Althoug
h chrome azurol S reactivity was detected in supernatants, control exp
eriments indicated that it was due to cysteine in the media. When bact
eria were cultured in media without cysteine, no siderophores were det
ected.