Abstract
Soluble antigens in culture filtrates of three strains of Petriellidium boydii and three strains of Monosporium apiospermum were examined. Antigens were separated from concentrated crude filtrates by anion-exchange chromatography. A single major peak (Antigen 1), constituting a significant proportion of the total recoverable carbohydrate, was the only product isolated from each of four chromatographed filtrates. Depending on the fungus strain, Antigen 1 consisted of 90–96% carbohydrate, 3–4% protein, and 2–4% nucleic acid. Antigen 1 was found to consist of a population of molecules with a heterogeneous molecular size when assayed by gel filtration chromatography; however, isolated fractions of Antigen 1 proved to be immunologically identical when examined by Ouchterlony immunodiffusion. In addition, Antigen 1 from each strain was immunologically identical to similar preparations of Antigen 1 from the other five fungus strains. Chromatography of culture filtrates from two strains of M. apiospermum revealed a second peak (Antigen 2), which was found to consist of 70% carbohydrate, 16% protein, and 4% nucleic acid. Although Antigen 2 contained four times as much protein as Antigen 1, the two preparations were immunologically identical by immunodiffusion tests. Ion-exchange chromatography proved to be a useful procedure for isolating antigens of P. boydii and M. apiospermum from culture filtrates.
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Lupan, D.M., Cazin, J. Serological diagnosis of petriellidiosis (Allescheriosis). Mycopathologia 58, 31–38 (1976). https://doi.org/10.1007/BF00493591
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DOI: https://doi.org/10.1007/BF00493591