摘要
FMDV non-structural protein gene（NSPs） 3ABC, 3AB, 2C and 3D were amplified and cloned into expression plasmid pET-32a（+）. The recombinant NSPs were produced in E.coli and purified using Ni2+ affinity column. Western-blotting indicated that the NSPs were expressed correctly. Using the recombinant NSPs, indirect ELISAs have been set up to distinguish FMDV-infected pigs from vaccinated ones. Experimental results indicate that the immunogenesity of recombinant 3AB protein is strong and can be the ideal antigen for detection; the immunogenecity of 2C is weak and sensitivity of the assay is low; 3D is not an ideal antigen ,for the specificity of assay based on 3D is low.
FMDV non-structural protein gene(NSPs) 3ABC, 3AB, 2C and 3D were amplified and cloned into expression plasmid pET-32a(+). The recombinant NSPs were produced in E.coli and purified using Ni^(2+) affinity column. Western-blotting indicated that the NSPs were expressed correctly. Using the recombinant NSPs, indirect ELISAs have been set up to distinguish FMDV-infected pigs from vaccinated ones. Experimental results indicate that the immunogenesity of recombinant 3AB protein is strong and can be the ideal antigen for detection; the immunogenecity of 2C is weak and sensitivity of the assay is low; 3D is not an ideal antigen ,for the specificity of assay based on 3D is low.
