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Production of a biologically active growth hormone from giant catfish (Pangasianodon gigas) in Escherichia coli

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Abstract

Giant catfish growth hormone (gcGH) cDNA was cloned and expressed in E. coli. The expected 20.5 kDa protein corresponded to the mature gcGH and was efficiently expressed. This protein was produced as inclusion bodies and comprised about 20% of total cellular proteins. The recombinant hormone promoted growth when injected intramuscularly or intraperitoneally into goldfish (Carassius auratus) at 0.1 or 1 μg soluble gcGH per g fish body wt per week. In addition, the recombinant gcGH inclusions had growth-promoting activity similar to that of the soluble form when the fish was received either by intraperitoneal injection or by oral administration.

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Promdonkoy, B., Warit, S. & Panyim, S. Production of a biologically active growth hormone from giant catfish (Pangasianodon gigas) in Escherichia coli . Biotechnology Letters 26, 649–653 (2004). https://doi.org/10.1023/B:BILE.0000023024.27549.6d

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  • DOI: https://doi.org/10.1023/B:BILE.0000023024.27549.6d

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