Common polysaccharide antigens from the cell envelope of Clostridium perfringens type A.
AUTOR(ES)
Dayalu, K I
RESUMO
Soluble antigens were obtained by extracting five serotype strains of Clostridium perfringens type A with water at 100 degrees C. The type-specific polysaccharides were precipitated with ethanol, and the common antigens were recovered from the ethanol supernatants by concentration, dialysis, and lyophilization. Refluxing the water-extracted cell residues with 1% acetic acid followed by concentration, dialysis, and lyophilization gave additional common antigen fractions. A comprehensive, side-by-side comparison of the antigen fractions, the ethanol precipitate, the ethanol supernatant, and the acetic acid supernatant, revealed that common antigens were recovered in all three fractions, and that three distinct entities were responsible for the formation of the observed common immunoprecipitin lines; whereas many fractions possessed all three immunoprecipitin lines, others contained only one or two. The serological homology observed between the various antigen fractions was apparently a consequence of N-acetylglucosamine- and N-acetylmannosamine-containing polymers. The common antigens were presumably associated with the cell envelope and may be the type of markers sought previously by others for the serological identification of C. perfringens.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=351352Documentos Relacionados
- Improved method for purification of enterotoxin from Clostridium perfringens type A.
- Purification and characterization of an extracellular alpha-amylase from Clostridium perfringens type A.
- Characterization of a parasporal inclusion body from sporulating, enterotoxin-positive Clostridium perfringens type A.
- Raffinose increases sporulation and enterotoxin production by Clostridium perfringens type A.
- Influence of starch source on sporulation and enterotoxin production by Clostridium perfringens type A.
