Maps of the Providencia alcalifaciens genome and plasmid. (A) P. alcalifaciens genome. The scaffolds are ordered and oriented for maximum synteny with P. rettgeri. The scaffolds are not positioned in a complete circle because the order and orientation of the scaffolds are not empirically known. The size of the gaps between scaffolds is unknown. Rings from the outermost to the center: 1) genes on the forward strand (purple), 2) genes on the reverse strand (purple), 3) tRNA and rRNA genes (black), 4) genes unique to P. alcalifaciens when comparing all 8 Dmel and HMP Providencia genomes (orange), 5) individual scaffolds (alternating shades of grey), 6) GC skew. (B) pPALC1. The plasmid has the genes on the forward strand on the outermost ring and genes on the reverse strand on the inner ring.