Acinetobacter sp. strain YAA is able to use aniline and o-toluidine as the sole carbon and energy source. This strain has several different plasmids and acridine orange curing suggested that aniline utilization in strain YAA was Sall fragment from the insert in E. coli resulted in the accumulation of catechol. Southern hybridization studies indicated that the aniline oxygenase gene (atdA) was present on one of the plasmids, pYA1. These results suggest that in strain YAA aniline is degraded via catechol through a pathway involving meta-cleavage of the benzene-ring by plasmid-encoded genes including atdA.

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