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  • Công bố khoa học và công nghệ Việt Nam

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Các công nghệ xử lý sinh học, xúc tác sinh học; lên men

Nguyễn Thị Hiền Trang, Lê Thị Huệ, Nguyễn Thị Thảo, Đồng Văn Quyền(1), Quyền Đình Thi

Tái cuộn gấp, tinh sạch và đánh giá và đánh giá hoạt tính sinh học của Somatotropin bò (BST) dạng thể vùi biển hiện trong E.Coli

Refolding, purification and characterization of the recombinant bovine somatotropin (bST) expressed in E. coli

Công nghệ Sinh học

2014

3

439-445

1811-4989

Bovine somatotropin (bST) is a protein growth hormone secreted from anterior pituitary gland in response to growth hormone releasing factor. Somatotropin has the potential to increase the efficiency of milk production in cows by 10-15 percent with less than 5 percent on feed intake. On November, 1993, the FDA announced approval of a bST product for increasing milk production in dairy cows. Recombinant bovine somatotropin (rbST) is the first biotechnology product has been widely used to improve milk production in cows to meet the growing needs of nutrition. The authors cloned and expressed bST in E. coli JM109 (DE3). In this report rbST has been expressed and refolded in biologically active form. The inclusion body was solubilized by 8 M urea, and purified through NTA column and Supedex 75. The circular dichroism spectrum of recombinant bST and native bST is similar. The soluble rbST was analyzed for biological activity by Nb2 lymphoma cell. It was found that the rbST had biological activity.

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