Table 3 Comparative account of characteristics of bacterial keratinases.
Bacteria | Optimum | Catalytic type | Activators | Inhibitors | References | |
|---|---|---|---|---|---|---|
pH | Temp. (°C) | |||||
Ochrobactrum intermedium | 9.0 | 40 | Metallo-serine | K+, Na+, Ca2+ and Mg2+ | PMSF, EDTA, Zn2+, Fe2+, Cu2+, and Mn2+ | Sharma and Kango23 |
Bacillus licheniformis ALW1 | 8.0 | 65 | – | – | – | Abdel-Fattah et al.25 |
Bacillus cereus | 7.0–9.0 | 30–45 | Metallo | – | – | Verma et al.28 |
Bacillus sp. | 7–8 | 30–37 | Serine/metallo | – | – | Verma et al.28 |
Laceyella sacchari YNDH | 10.4 | 70 | Mixed Serine/metallo | PMSF, EDTA, DTT | Cu2+, Mn2+, Zn2+, and Co2+ | Goda et al.47 |
Bacillus sp. | 11.0 | 60 | Serine | – | PMSF, H2O2, Ca2+ | Genckal and Tari48 |
Bacillus clausii | 11.0 | 60 | Serine | SDS, H2O2 | PMSF, Leupeptin | Joo et al.52 |
Bacillus subtilis DP1 | 10.0 | 37 | Serine | Ca2+ and Mg2+ | PMSF, EDTA Mn2+ and Zn2+ | Sanghvi et al.58 |
Paenibacillus woosongensis TKB2 | 9.0 | 50 | Serine | Mo+, Fe2+ and Mn2+ | PMSF, SDS, EDTA and β-ME | Paul et al. 60 |
B. velezensis NCIM 5802 | 10.0 | 60 | Metallo-serine | Ca2+ and Mg2+ | EDTA, PMSF, Ag2+ Hg2+ and NaN3 | This study |
