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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Areces, L., Biscoglio de Jim’enez Bonino, M. J., Parry, M., Fraile, E. R., Fern’andez, H. M., and Cascone, O. (1992),Appl. Biochem. and Biotechnol. 37, 283–294.
Fern’andez Lahore, H. M., Miranda, M. V., Fraile, E. R., Biscoglio, M. J., and Cascone, O. (1995), ProcessBiochem. 30, 615–621.
Martin, P., Raymond, M. N., Bricas, E., and Ribadeau Dumas, B. (1980),Biochim. Biophys. Acta 612, 410–420.
Sternberg, M. Z. (1971),J. Dairy Sci. 54, 159–167.
Lowry, O. H., Rosembrough, N. J., Farr, A. L., and Randall, R. J. (1951),J. Biol. Chem. 193, 265–275.
Arima, K., Yu, J., and Iwasaki, S. (1970), inMethods in Enzymology, vol. 19, Perlman, G. E. and Lorand L. eds., Academic, New York, pp. 446–459.
Laemmli, U. K. (1970),Nature 227, 680–685.
Raymond, N. M., Bricas, E., Salesse, R., Garnier, J., Garnot, P., and Ribadeau Dumas, B. (1973),J. Dairy Sci. 56, 419–422.
Salesse, R. and Garnier, J. (1976),J. Dairy Sci. 59, 1215–1221.
Umezawa, H. and Aoyagi, T. (1983), inProteinase Inhibitors: Medical and Biological Aspects, Katunuma, N., Umezawa, H., and Holze, H., eds., Springer-Verlag, Berlin, pp. 3–26.
Fruton, J. S. (1987), inHydrolytic Enzymes, Neuberger, A. and Brocklehnst, K., eds., Elsevier, Amsterdam, pp. 1–37.
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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