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DNA Sequencing> | ... The pET28a-tri-ORF1 plasmid was then constructed similarly and used to transform competent E. coli DH5α cells (Fig. 1). Clones containing the recombinant plasmid were identified with restriction enzyme digestion and DNA sequencing (GenScript Corporation, China). Fig. 1 ... | Get A Quote |
BACKGROUND: Porcine circovirus-like virus P1 is a newly discovered virus. To date, there has been no specific serological assay for use in the diagnosis of P1 infection. RESULTS: Because P1 has high homology to porcine circovirus type 2 (PCV2) at the nucleotide level, the C-terminal portion of the capsid protein (amino acids 73-114), a discriminative antigen, was expressed in a prokaryotic expression system. The recombinant product (rctCap), composed of three identical repeated domains, was shown to be strongly immunoreactive to P1-specific serum. This assay was validated by comparison with an indirect immunofluorescence assay (IFA). The diagnostic sensitivity and specificity of the rctCap enzyme-linked immun... More