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Fig. 7. Regulation of the rblA promoter by glucose and the growth
curve. Stationary-phase wild-type cells bearing the
rblA::
pgal reporter were diluted into fresh normal or
glucose-free medium; reporter activity and the cell concentration were
followed until the cells again reached stationary phase. The promoter activity
is higher in the presence of glucose; however, regardless of glucose, the
activity is highest during the exponential phase.