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. 2008 Jul 25;95(9):4228–4240. doi: 10.1529/biophysj.108.132894

FIGURE 1.

FIGURE 1

(a) Model of promoter pS with a single TF that represses the promoter by competitive binding to an operator that overlaps with the promoter. The promoter activity is given in terms of the three-step model of Hawley and McClure (16) and Buc and McClure (17) for transcription initiation, with indicated transition rates for formation of closed complex, that of open complex, and elongation. (b) Same as in panel a, but with addition of a convergent promoter that interferes with both RNAP binding to pS and with binding of TF.