Lipase activity in Mycobacterium leprae--an indicator of metabolic function.

Presence of lipase, in Mycobacterium leprae obtained from human nodules and infected armadillo tissues, has been detected by demonstrating the ability of the bacteria to hydrolyze tributyrin. This capacity is expressed during incubation of the bacteria with the substrate and needs a source of carbon and other energy metabolites. The activity is blocked by anti M. leprae drug rifampicin. It is concluded that expression of lipase activity is a metabolic event of M. leprae, while they are maintained in an energy providing medium.