Immunochemical reactivity of soybean β-conglycinin subunits

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Abstract

The immunochemical reactivity of two polyclonal sera raised against soybean purified αα′ and β subunits was analysed. We show that anti-αα′ serum mainly reacts with αα′ subunits and β′ subunit, but it does not recognize β subunit. In addition, β subunit is not able to compete with αα′ subunit for anti-αα′ serum recognition sites; therefore the main immunogenic region of αα′ subunits is the extension region. Both anti-αα′ and anti-β sera were able to recognize E. coli produced α subunit, consequently glycosylation is apparently not required for antigen-antibody interaction. Anti-β subunit serum shows strong reactivity against soybean produced β-subunit and recombinant α subunit, while it shows weak recognition of soybean purified αα′ subunits. A mutant of α subunit with the N terminal β barrel region and C terminal α helices deleted, failed to be recognized by anti-β serum. For that reason although N and C terminal domains are structurally equivalent, their immunochemical reactivity is different. © 2005 Taylor & Francis Group Ltd.

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APA

Petruccelli, S., Chirdo, F. G., & Añón, M. C. (2005). Immunochemical reactivity of soybean β-conglycinin subunits. Food and Agricultural Immunology, 16(1), 17–28. https://doi.org/10.1080/09540100500054727

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