FIG 3.

Map of proposed degradation of pyrene (PYR), phenanthrene (PHE), and a mixture of the two chemicals (MIX) by four Mycobacterium species (czh-101, JS19b1, czh-3, and czh-117). Metabolites detected in each strain-chemical treatment combination are indicated by the symbols next to the metabolites. The metabolites in brackets are proposed intermediates. The initial PYR or PHE concentration was 100 ppm (200 ppm total PAH in mixture). Genes monitored by RT-PCR are indicated in italics next to arrows, showing catalytic conversion of metabolites. This map allows for a comparison of the metabolites detected in different strains and treatments.