Doğru M, Baysal Z, Aytekin C, Aydin H. Use of Natural Dye‐Casein Complexes: Effect of Proteolytic Treatment.
Prep Biochem Biotechnol 2006;
36:165-74. [PMID:
16513560 DOI:
10.1080/10826060500533984]
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Abstract
The activity of proteolytic enzymes is commonly measured using casein as a substrate. A modified caseinolysis assay was developed with natural dyes such as juglone, lawsone, berberine, and quercetin for Subtilisin carlsberg, protease type XVI, and trypsin, respectively. The pH dependence and incubation time were determined. K(m), V(max), and k(cat)/K(m) values were also determined for these enzymes. Lawsone was found to be a better substrate than the others.
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