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Keratinases play an important role in biotechnological applications such as improvement of feather meal, enzymatic dehairing and production of amino acids or peptides from high molecular weight substrates. Bacillus subtilis P13, isolated from Vajreshwari hot spring (45–50°C) near Mumbai, India, produces a neutral serine protease and has an optimum temperature of 65°C. This enzyme preparation was keratinolytic...
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