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. 2010 Dec 2;5(12):e14198. doi: 10.1371/journal.pone.0014198

Figure 8. Increase of alkaline phosphatase activity in concentrated supernatants by ElpS overexpression.

Figure 8

(A) Alkaline phosphatase assays on concentrated supernatants. Specific alkaline phosphatase activity was measured by degradation of 5 mg/ml p-nitrophenyl phosphate (PNPP) in 100-fold concentrated supernatants from CB15N (WT), CB15N ΔelpSelpS), CB15N ΔelpS/pMR10 (ΔelpS/pMR10) and CB15N ΔelpS/pMR10-elpSelpS/pMR10-elpS) grown in poor medium. (B) Absence of detection of MreB in concentrated supernatants. Immunoblot with anti-MreB antibodies was done on cellular extracts and 100-fold concentrated supernatants from strains tested in (A) grown in poor medium. Proteins contained in samples tested in (A) were detected by electrophoresis and silver nitrate staining as a loading control for immunoblot.