Abstract

The reactivity of native bovine conglutinin (Kg) with antibody against recombinant Kg (rKg), with deletion of the N-terminal and collagen-like regions of the native Kg molecule, was studied by sandwich enzyme-linked immunosorbent assay. With anti-recombinant Kg antibody as the coating antibody, rKg reacted with biotinylated homologous anti-rKg and heterologous anti-Kg antibodies as probing antibodies, while native Kg did not. With anti-native Kg antibody as coating antibody, native Kg reacted with biotinylated homologous antibody as probing antibody, while recombinant Kg reacted weakly with both biotinylated homologous and heterologous antibodies. Consequently the N-terminal and collagen-like regions of native Kg molecule are essential to express the complete immunogenicity and/or antigenicity of the native Kg molecule.

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