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Abstract: The invention provides metRS2 polypeptides and polynucleotides encoding metRS2 polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are preferred methods for utilizing metRS2 polypeptides and polynucleotides as diagnostic reagents and in diagnostic assays to screen for microbial infections in organisms and infections in materials.
Coronaviruses possess three major size classes of polypeptides as judged by molecular weight: approximately 180,000, approximately 50,000, and approximately 23,000. Human coronaviruses 229E and OC43 possess not only three similar size classes of polypeptides but also three distinct antigens, none of which cross-react with the heterologous strain.
Polypeptides separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis were reacted in rocket immunoelectrophoresis with antiserum monospecific to each of the three strain-specific antigens (excised precipitin lines from crossed immunoelectrophoresis profiles were used for immunogens).