Figure 2
From: Characterization of a chemostable serine alkaline protease from Periplaneta americana
Effect of pH on (A) activity and (B) stability of the purified P. americana protease. The protease activity was evaluated using different buffers (from pHÂ 3 to 12), whereas the pH stability of the enzyme was determined by incubating the enzyme in alkaline buffers for longer time (1Â h). Purified protease showed a significant activity at high alkaline pH range. The error bars show the standard deviation of at least tree replicates.