Abstract
A method for rapid screening of polyclonal and monoclonal antibodies using micropolyacrylamide gels is described. Antibodies, labeled directly in vitro or in vivo or indirectly by conjugate formation with 125I-labeled protein A, are dissolved in low-melting-temperature agarose and drawn into microcapillary tubes. After gelling, tube contents are applied to the gel surface in “lanes.” Following a brief incubation, antibody strips are removed and destaining is achieved by electrotransfer onto DE-81 or by washing. The technique is illustrated by screening of multiple polyclonal and monoclonal antibodies against Chlamydomonas flagellar proteins. A potential use for mapping of antigenic determinants is also demonstrated using antisera to the 60K gelatin-binding peptide of human plasma fibronectin, released by leukocyte elastase, to probe subfragments generated by limited CNBr digestion.
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