Functions: Phase variation associated with changes in virulence.
References: Luneberg E, et al., 1998. Phase-variable expression of lipopolysaccharide contributes to the virulence of Legionella pneumophila. J. Exp. Med. 188(1):49-60.
Luneberg E, et al., 2001. Chromosomal insertion and excision of a 30 kb unstable genetic element is responsible for phase variation of lipopolysaccharide and other virulence determinants in Legionella pneumophila. Mol. Microbiol. 39(5):1259-1271.