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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Res Microbiol. 2010 Jan 4;161(2):158–167. doi: 10.1016/j.resmic.2009.12.004

Fig. 1.

Fig. 1

Mutation of crp confers a hyperpigment phenotype and prodigiosin production is inhibited by glucose. (Top) Growth and prodigiosin production by WT (fimC-4) and an isogenic crp (crp-1 fimC-2) mutant strain in LB medium. The fimC mutation is used to maintain a homogenous culture, as crp mutants aggregate and form robust biofilms on test tubes that could complicate growth analysis. The average of 4 independent replicates per strain are shown. (Bottom) Growth and prodigiosin production by WT (fimC-4) and an isogenic crp (crp-1 fimC-2) mutant strain in LB medium supplemented with 2% glucose. The averages of 4 independent replicates per strain are shown. These experiments were performed on different days with the same trend.