摘要
The plasmid PE which harbored the whole hexon-encoding gene of egg drop syndrome virus(EDSV) was identified and the hexon protein gene was obtained from it by restriction endonucleases.The gene was then directionally inserted into the PphI/KpnI sites of pQE32 and fused with the 6×His gene.This recombinant plasmid was transformed into E.coli M15 for expression and induced with IPTG.It was demonstrated by SDS-PAGE and Western blot that one expressed protein,110kD in size,could be specifically recognized by polyclonal anti-EDSV serum.The objective product was principally soluble and accounted for 21% of the total cellular proteins.The protein was used to detect the existence of antiEDSV IgG in 41 clinical chicken sera by agar diffusion test,and the result was in accordance with that when EDSV was used as antigen.These results showed that the expressed hexon recombinant protein can be used as diagnostic antigen of EDSV.
The plasmid PE which harbored the whole hexon-encoding gene of egg drop syndrome virus (EDSV) was identified and the hexon protein gene was obtained from it by restriction endonucleases. The gene was then directionally inserted into the Pph I/Kpn I sites of pQE32 and fused with the 6 × His gene. This recombinant plasmid was transformed into E. coli M15 [ pREP4 ]for expression and induced with IPTG. It was demonstrated by SDS-PAGE and Western blot that one expressed protein, 110kD in size, could be specifically recognized by polyclonal anti-EDSV serum. The objective product was principally soluble and accounted for 21% of the total cellular proteins. The protein was used to detect the existence of anti-EDSV IgG in 41 clinical chicken sera by agar diffusion test, and the result was in accordance with that when EDSV was used as antigen. These results showed that the expressed hexon recombinant protein can be used as diagnostic antigen of EDSV.
出处
《病毒学报》
CAS
CSCD
北大核心
2006年第1期58-61,共4页
Chinese Journal of Virology
基金
四川省青年科技基金(980000240075)
四川省重点建设学科项目(SZD0148)
四川省学术带头人培养基金(3200111)
教育部新世纪优秀人材支持计划项目(NCET-04-0906)资助
关键词
减蛋综合征病毒
六邻体蛋白基因
表达
诊断抗原
应用
egg drop syndrome virus
hexon protein gene
expression
diagnostic antigen
application