Figure 1.

SDS-PAGE analysis of CotA purification. Samples from cell free extracts (CFE), heat incubation (HI), anion exchange chromatography (AEC) and size exclusion chromatography (SEC) were denatured for 20 min at 95°C in SDS loading buffer containing β-mercapthoethanol. Sample SEC* was incubated for 5 min at 95° in SDS loading buffer containing β-mercapthoethanol. M, marker. Specific activity was determined using the standard ABTS oxidation assay.

Reiss et al. BMC Biotechnology 2011 11:9   doi:10.1186/1472-6750-11-9
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