Antibodies Raised Against Synthetic Peptides React with Choline Acetyltransferase in Various Immunoassays and in Immunohistochemistry |
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| Authors: | Silke Benecke Christel Ostermann-Latif Michael Mader Bernhard Schmidt Jürgen W Unger † Martin E Westarp ‡ Klaus Felgenhauer |
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| Institution: | Neurologische Klinik der Universität, Göttingen, F.R.G.;Biochemisches Institut II der Universität, Göttingen, F.R.G.;Anatomische Anstalt der Universität, München;Abteilung für Neurologic der Universität, Vlm, F.R.G. |
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| Abstract: | Abstract: Antisera were raised in rabbits against five synthetic peptides. These peptides have been identified as potentially antigenic epitopes from the sequence of porcine choline acetyltransferase (ChAT) using primary and secondary structure analysis. All five antisera recognized immunoaffinity-purified antigen from porcine brain in an ELISA and on western blots. Four antisera recognized ChAT on dot blots, and another four antisera reacted with native and degraded enzyme in a sandwich ELISA using monoclonal antibodies as the capture antibody. One peptide antiserum was of similar avidity in this sandwich ELISA as a polyclonal antibody raised against immunoaffinity-purified ChAT. The same antiserum reacted with the enzyme from human placenta in an ELISA and on western and dot blots and recognized ChAT in rat, primate, and human neurons. Thus, a single peptide (amino acids 168- 189) provides the means for easy, reliable, and reproducible generation of antibodies against ChAT suitable for replacing conventional polyclonal and monoclonal antibodies. |
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| Keywords: | Choline acetyltransferase Antibodies Peptides Porcine brain Human placenta Human brain |
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