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. 2008 May 31;36(12):4009–4021. doi: 10.1093/nar/gkn353

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© 2008 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 6. — Changing promoter/operator spacing does not alter optimal loop lengths for repression. Top: repression ratio for WT cells with spacing shown in (C) of Figure 5 (filled circles) versus spacing shown in (B) of Figure 5 (shaded line). Below: reporter gene expression E ′ levels for uninduced (open circles) and induced (filled circles) cells with the promoter/operator arrangements shown in Figure 5C versus those in Figure 5B (curves and filled region). Data are available at NAR Online.