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Further characterization and kinetic parameter determination of a milk-clotting protease fromMucor bacilliformis

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Abstract

Further characterization of an aspartyl protease fromMucor bacilliformis with milk-clotting activity was performed. An extinction coefficient, ε278 cm = 1.61 mL/mg/cm, a molecular mass of 35,400 Da and a pI of 5.2 were determined. Proteolytic activity and kinetic parameters were evaluated by using the hexapeptide Leu-Ser-pNO2-Phe-Nle-Ala-Leu-OMe as the substrate. The effect of pH and temperature on peptide cleavage, as well as protease heat stability, was determined. Such properties, taken as a whole, indicate that theM. bacilliformis protease can be considered a potential substitute for bovine chymosin in cheese manufacture.

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Venera, G.D., Machalinski, C., Zum’arraga, H. et al. Further characterization and kinetic parameter determination of a milk-clotting protease fromMucor bacilliformis . Appl Biochem Biotechnol 68, 207–216 (1997). https://doi.org/10.1007/BF02785991

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  • DOI: https://doi.org/10.1007/BF02785991

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