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A cDNA coding mutated cecropin CMIV from Bombyx mori was synthesized according to its amino acid sequense using E .coli biased codons .The gene was cloned into the fusion expression vector pEZZ318 and was expressed in E .coli HB101.The fusion protein produced was purified by affinity chromatography to yield 26 mg/L fusion product .The anti-bacterial activities of recombinant cecropin CMIV were recovered after cleavage by chemical method. 相似文献
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