Cloning and Prokaryotic Expression of L1 Gene of Bovine Papillomavirus Genotype 13 |
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Authors: | ZHAO Tian-jing JIA Xiao-xiao SHI Qiao-yun GUO Shi-yu PANG Feng ZHU Hua-pei XU Kai-lian LI Ya-ying PENG Dong-mei LI Guo-hua WANG Feng-yang |
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Institution: | Key Laboratory of Animal Genetic Engineering of Haikou City, Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research of Hainan Province, College of Agriculture, Hainan University, Haikou 570228, China |
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Abstract: | This experiment was conducted to clone and express L1 gene of bovine papillomavirus genotype 13 (BPV13).Specific primers were designed according to the published sequences of BPV13, and 1 494 bp L1 gene fragment was amplified by PCR.After digestion by BamHⅠand Hind Ⅲ, the fragment was inserted into the prokaryotic expression vector pET28a(+) to construct the recombinant plasmid pET28a-L1.The recombinant plasmid pET28a-L1 was identified by double enzyme digestion and nucleotide sequencing, and was transformed into E.coli BL21(DE3).The expression of pET28a-L1 was induced by IPTG after selecting the best concentration and time.The results showed that L1 gene was exactly inserted into the prokaryotic expression vector pET28a(+), after induction, the target protein containing His-tag was successfully expressed by expression bacteria which included recombinant plasmid pET28a-L1;SDS-PAGE result showed that the molecular mass of the protein was 60 ku which was consistent with the expected size;After ultrasonic treatment, SDS-PAGE result showed that the protein existed in the precipitation;The target protein was a fusion protein with His-tag verified by Western blotting.This study laid a solid foundation for the research of function of BPV13 L1 gene and the development of effective DNA vaccine of BPV13. |
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Keywords: | bovine papillomavirus genotype 13 (BPV13) L1 clone prokaryotic expression |
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