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SDS–PAGE analysis of purified recombinant MbPCNA. Approximately 15 µg protein was analyzed on 12% polyacrylamide gel and stained with Coomassie Brilliant Blue. Purified MbPCNA (lane P) is indicated by the arrow and compared against molecular-mass standards (lane M r). The purity of the recombinant protein is observed to be higher than 95%.
