FIG. 3.
Expression of dofA-lacZ and dofB-lacZ translational fusions in M. xanthus. The β-galactosidase activity of M. xanthus MxDAL or MxDBL was determined during vegetative growth (V) and development at 20 h poststarvation (D). The β-galactosidase activities shown represent the averages of three independent experiments. ONP, o-nitrophenol.