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Expression of lacZ and LEU2 in strain EGY48[p8op-lacZ] tested for interactions of SulA, RcsA, or RpoH with either subunit of ClpY or ClpQ. The SulA subunit was also tested for its interaction with ClpY derivative mutants. The signals shown in the diagram are as described in the Fig. 3 legend. ✽, blue color on X-Gal plates.
