Nucleotide sequence of plasmid pCNB1 from comamonas strain CNB-1 reveals novel genetic organization and evolution for 4-Chloronitrobenzene degradation

The nucleotide sequence of a new plasmid pCNB1 from Comamonas sp. strain CNB-1 that degrades 4-chloronitrobenzene (4CNB) is determined. It is suggested that the gene deletion and acquisition as well as genetic rearrangement of DNA molecules happened during the evolution of the 4CNB degradation pathway on pCNB1.