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. 2012 Sep 8;40(21):11139–11154. doi: 10.1093/nar/gks806

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© The Author(s) 2012. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), 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. — Culture growth times correlate with repressor strength. Time to OD₆₀₀ = 1 are plotted against log [β-galactosidase activity] for LLhG/E62K (magenta squares) and LLhX (green circles) variants. Data for LLhG, LLhS and LLhS D62F are indicated with orange squares. Results for wild-type LacI and dimeric LacI-11 are shown with black triangles; as expected, these repressors are quickly induced when lactose is converted to allolactose. Growth times are the average of at least three replicate experiments; error bars show the standard deviations. Black lines were drawn to aid visual inspection of the data.