The orthologous T6SS-2 loci in Pantoea and Erwinia species. Genes encoding proteins with the conserved domains identified by Boyer et al.  are represented by green arrows while the grey arrows indicate other genes conserved among the Pantoea and Erwinia T6SS-2 loci which were not identified as part of the conserved core. White arrows represent the genes not conserved among the Pantoea and Erwinia species.
De Maayer et al. BMC Genomics 2011 12:576 doi:10.1186/1471-2164-12-576