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. 2004 Oct 21;23(22):4473–4483. doi: 10.1038/sj.emboj.7600423

Figure 3.

Figure 3

Growth rate-dependent control of B. subtilis rRNA promoters (rrnB P1: −39 to +1, RLG7554; rrnB P2: −38 to +1, RLG7553). Promoter activity (arbitrary units) was measured by primer extension from RNA extracted from cells grown in different media. Slowest to fastest growth rate: (i) MOPS, 1% glucose, phenylalanine and tryptophan; (ii) MOPS, 1% glucose, 20 amino acids; (iii) LB. To facilitate comparison of slopes, promoter activities were normalized to the activity of its own promoter at the lowest growth rate.