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Purification and characterization of keratinase from Meiothermus sp. I40, a newly identified strain isolated from hot springs, was carried out and reported. Crude enzyme was obtained from culture medium after incubation of I40 for 2 days and was purified by 20–80% precipitation with (NH 4 ) 2 SO 4 , and separated by hydroxyapatite and Superdex pg 200 gel filtration chromatography...
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