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CONSTRUCTION OF DNA SEQUENCES AND THEIR USE FOR MICROBIAL PRODUCTION OF PROTEINS, IN PARTICULAR HUMAN SERUM ALBUMIN
CONSTRUCTION OF DNA SEQUENCES AND THEIR USE FOR MICROBIAL PRODUCTION OF PROTEINS, IN PARTICULAR HUMAN SERUM ALBUMIN
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机译:人类特定血清白蛋白DNA序列的构建及其在微生物生产蛋白质中的应用
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摘要
By means of reverse transcription of mRNA coding for a desired polypeptide, there is obtained a set of overlapping fragments of duplex cDNA, which together correspond to the whole mRNA molecule. The fragments have overlapping regions bearing sites for restriction enzymes, such that cutting and ligation gives DNA corresponding to the polypeptide. This is introduced into a vector in reading frame with a promoter. Transformation of a microorganism enables expression of the polypeptide. The construction via fragments enables large molecules to be made. Thus, human serum albumin (HSA) is produced by E. coil transformed with plasmid pHSAI. This includes DNA made from fragments derived from reverse transcription of mRNA from human liver.
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