Figure 3.

Screen shot of UCSC Genome Browser indicating binding sites found in genome scans using different information weight matrices. Binding sites in the promoter of the CYP3A4 gene found with PXR/RXRα weight matrices are indicated by color-coded custom tracks. Sites uniquely identified with the weight matrices from Models 1 and 2 are respectively indicated with brown and blue tracks. The grey track shows binding sites with significantly different binding strengths that were identified by scanning with both of the matrices. The Custom tracks were generated by the scandiff program and uploaded to the Genome Browser.