Genetic organization of the central control regions located on the IncP-1ε plasmids pSFS26, pSFS52, pKJK5, pAKD25, pAKD16, pSFS12 and pSFW53. Coding regions are marked by arrows indicating direction of transcription. Different putative transcriptional units (klc, kle, korA- incC- korB, kfr) of the stable inheritance and central control regions are presented in different colors. Homologous regions, labeled by orange boxes, were used for cluster analysis.