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Time-dependent pH stabilities of CA130 and K198βA. Enzymes are stored at 37°C at pH 7.0, 8.0, 9.0, and 10.0. The relative residual activities of CA130 (▴) and K198βA (▪) were determined after 0, 5, 10, 20, 40, 60, 120, and 240 min. Three independent measurements were taken for each datum point. The data are mean values of replicated experiments.
