Antigenic analysis of Legionella pneumophila and Tatlockia micdadei (Legionella micdadei) by two-dimensional (crossed) immunoelectrophoresis.

AUTOR(ES)

Joly, J R

RESUMO

The antigens of the six serogroups of Legionella pneumophila were compared by two-dimensional (crossed) immunoelectrophoresis by using rabbit antisera to serogroups 1, 2, 3 and 4. The close relationship among the serogroups was shown by the fact that 27 of the 31 antigens demonstrated so far were common. However, distinctive group-specific antigens with slow electrophoretic mobility were observed for serogroups 1, 2, 3, and 4. When intact serogroup 1 organisms were extracted with EDTA, the group-specific antigen was recovered in a virtually pure form. The group-specific antigen was pronase resistant, heat stable, and amphiphilic and had a surface location, all of which are properties suggestive of lipopolysaccharide. L. pneumophila shared four to five antigens with Tatlockia micdadei (Legionella micdadei). The large number of common antigens in the serogroups of L. pneumophila has important implications for the specific detection of antigens and antibodies by fluorescent and other tagged antibody methods.

Documentos Relacionados

• Application of charge shift electrophoresis to antigenic analysis of mycoplasmic membranes by two-dimensional (crossed) immunoelectrophoresis.
• Characterization of membrane and cytoplasmic antigens of Mycoplasma arginini by two-dimensional (crossed) immunoelectrophoresis.
• Antigenic analysis of coccidioidin and spherulin determined by two-dimensional immunoelectrophoresis.
• Identification and preliminary characterization of a major heat-stable surface antigen of Actinomyces israelii by two-dimensional (crossed) immunoelectrophoresis.
• Common antigens among systemic disease fungi analyzed by two-dimensional immunoelectrophoresis.