PPIB and infection: Importantly, our data also indicate that all genes in the LMRG_00594-LMRG_00611 operon are part of the σB regulon; this operon encodes all enzymes involved in utilization of carbon compound 1,2-propanediol, which is an important carbon source during infection for bacterial pathogens such as S. enterica (Bobik et al., 1999) and was reported to be degraded by L. innocua (Xue et al., 2008).