Table 2.
Some properties of KerBAN in comparison with other characterized bacterial keratinases.
| Microbial source | Max. prod. keratinase (U/mL)* | Optimum pH | Optimum temp. (oC)* | Keratinase type | Mol. Wt. (kDa)* | Ref.* |
|---|---|---|---|---|---|---|
| Bacillus sp. NFH5 | 1879.09 | 8.0 | 90 | Metallo | 39 | This study |
| Fervidobacterium islandicum AW-1 | – | 9 | 100 | – | >200, 97 | [58] |
| Bacillus circulans DZ100 | 15,000 | 12.5 | 85 | Serine | 32 | [59] |
| Pedobacter sp. 3.14.7 | 33.04 | 7.5 | 55 | Metallo | 25 | [61] |
| Pseudomonas aeruginosa KS-1 | 1200 | 9 | 60 | Serine | 45 | [62] |
| Bacillus cereus YQ15 | 925 | 10 | 60 | Serine-metallo | – | [63] |
| Acinetobacter sp. R-1 | 188 | 11 | 50 | Metallo | 25 | [64] |
| Chryseobacterium L99 sp. nov. | 213.8 | 8 | 40 | Serine | 33 | [65] |
| Streptomyces sp. | – | 11 | 45 | Serine-metallo | 44 | [66] |
| Brevibacillus brevis US575 | 7500 | 8 | 40 | Serine | 29.12 | [67] |
| Microbacterium sp. kr10 | – | 7.5 | 50 | Metallo | 42 | [68] |
(*) Max. prod. = Maximum produced; Temp. = Temperature; Mol. Wt. = Molecular weight; Ref. = Reference; (−) Not reported.