SUMMARY: Aliphatic dicarboxylic acids, homologous series C to C (except pimelic acid, C), were utilized as sole carbon and energy sources by , wild strain. A spontaneous Pma mutant, able to utilize pimelic acid, was isolated from the wild strain on pimelate agar medium. Utilization of pimelic acid was the only character that differentiated the wild strain from the mutant. Experiments with Tween 80 showed that the ability to utilize pimelic and suberic acids by both strains of depended on cell permeability. These results suggest that the aliphatic dicarboxylic acids are metabolized by inducible enzymes and that the induction is not specific.


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