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. 2001 Nov;183(21):6305–6314. doi: 10.1128/JB.183.21.6305-6314.2001

FIG. 3.

FIG. 3

Both the UP element and the core promoter sequence determine the extent of activation by UP elements. The sources of the UP element and core promoter regions are indicated below each bar. The fold activation is the ratio of the β-galactosidase activity of the UP element-containing promoter (−61 or −60 to +1) to that same promoter lacking a UP element (−41 to +1). Means and standard deviations are derived from at least three independent assays.