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In order to study the properties of a thermostable uricase produced by Microbacterium sp. strain ZZJ4-1, the enzyme was purified by ammonium sulfate precipitation and DEAE-cellulose ion exchange, hydrophobic and molecular sieve chromatography. The molecular mass of the purified enzyme was estimated to be 34 kDa by SDS-PAGE. The enzyme was stable between pH 7.0 and 10.00. The optimal reaction temperature...
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