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Immunoblot analysis of RhsI-HAmain or RhsI-HAorphan protein (11.6 and 18.5 kDa respectively) stability in the presence (Sty wt) and absence (Sty Δlon) of Lon protease before and after A) SHX or B) Erythromycin treatment for 1 h. Levels of the RNA polymerase β-subunit are shown as control.
