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Molecular Cloning of Grass Carp Growth Hormone Receptor and Its Functional Interaction with Silver Carp Growth Hormone

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A novel grass carp growth hormone receptor (gcGHR) cDNA was cloned by RT-PCR method. CHO-K1 cells were transfected with eukaryotic expression vector pcDNA3.0 containing gcGHR entire coding region, resulting in a stable CHO cell line expressing gcGHR (CHO-gcGHR). Bioactivity assay revealed that silver carp growth hormone (scGH) bound gcGHR with dissociation constant (Kd) value of 1.96 nM and stimulated CHO-gcGHR cells proliferation with the sensitivity of 20 ng/ml. The cells proliferation assay was also provided to measure fish growth hormone levels of pituitary and refolded protein.

Keywords: CHO-K1 cell; cell proliferation; grass carp; growth hormone level; growth hormone receptor

Document Type: Research Article


Publication date: March 1, 2009

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.

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