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. 2013 Mar 5;8(3):e58393. doi: 10.1371/journal.pone.0058393

Table 3. Comparison of keratinase activity from different source.

Enzyme source Activity(different substrate, U/ml) Reference
α-keratin (keratin azure) β-keratin (feather meal or azokeratin)
B. licheniformis MKU3 55.0 NAa [12]
E. coli pETproK3 74.3 NAa [12]
B. megaterium pWHK3 95.0 NAa [12]
P. pastoris pPICZαA-kerA NAa 285.0 [13]
P. pastoris pPZK3 135.0 NAa [9]
P. pastoris pPICZαA-kerAopti1 320.0 590.0 This study
a

NA, not available.