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A high thermostable extracellular protease was purified to homogeneity and characterised fromBacillus thermantarcticus, strain M1. The molecular mass was about 42 kDa. Almost total inhibition of protease by phenyl methyl sulphonylfluoride (PMSF), suggested that the enzyme belonged to the serine protease family. The enzyme was active and stable in a broad range of pH with an optimum at pH 7.0. The...
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