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. 2010 Jul 15;2010:132148. doi: 10.4061/2010/132148

Table 2.

Effect of inhibitors on activity of keratinase.

S. no. Concentration (mM) Residual activity (%)
PMSF EDTA DTT β-mercaptoethanol
(1) 1 5.00 74.00 120.00 240.00
(2) 5 0.00 70.00 158.00 609.00
(3) 10 0.00 70.00 203.00 876.00

Control without inhibitors was taken as 100% activity corresponded to 720 U/mL on feather keratin as substrate.