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A novel pullulanase gene (PbPulA) from Paenibacillus barengoltzii was cloned. PbPulA has an open reading frame of 2028 bp encoding 675 amino acids. It was heterologously expressed in Escherichia coli as an intracellular soluble protein. The recombinant pullulanase (PbPulA) was purified to homogeneity with a molecular mass of about 75 kDa on SDS-PAGE. PbPulA was optimally active at pH 5.5 and 50 °C...
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