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Characterization of the Pro-aminopeptidase from Aeromonas caviae T-64

The pro-aminopeptidase from Aeromonas caviae T-64 (pro-apAC) had maximal activity at 60°C and was more stable than mature apAC at temperature up to 65°C for 1 hour. The pH stability of pro-apAC ranged from 4.0 to 8.0, which is broader than the range for the mature apAC. The kcat/Km of pro-apAC was 1.4% to 24% of that of mature apAC.