Journal article
Purification and characterization of group A streptococcal pyrogenic exotoxin type C
Infection and immunity, Vol.16(2), pp.673-679
05/1977
DOI: 10.1128/IAI.16.2.673-679.1977
PMCID: PMC421008
PMID: 324918
Abstract
Group A streptococcal pyrogenic exotoxin (SPE) type C was partially purified by differential solubility in ethanol and acetate-buffered saline. Toxin prepared in this way consisted of protein and hyaluronic acid. After removal of hyaluronic acid, the toxin remained pyrogenic, enhanced susceptibility of rabbits to letahl endotoxin shock, was stable when treated with acid, base, or pepsin, but was inactivated by heat. Toxin further purified by thin-layer isoelectric focusing was pyrogenic and enhanced the susceptibility of rabbits to lethal endotoxin shock. Purified type C toxin appeared homogeneous when tested by Ouchterlony immunodiffusion and migrated as a single protein band in isoelectric focusing polyacrylamide gels (isoelectric point, 6.7) and sodium dodecyl sulfate-polyacrylamide gels (molecular weight, 13,200). The purified toxin was antigenically distinct from A and B SPE, and antisera raised against the purified toxin neutralized pyrogenic activity. The amino acid composition was determined.
Details
- Title: Subtitle
- Purification and characterization of group A streptococcal pyrogenic exotoxin type C
- Creators
- P M SchlievertK M BettinD W Watson
- Resource Type
- Journal article
- Publication Details
- Infection and immunity, Vol.16(2), pp.673-679
- Publisher
- United States
- DOI
- 10.1128/IAI.16.2.673-679.1977
- PMID
- 324918
- PMCID
- PMC421008
- ISSN
- 0019-9567
- eISSN
- 1098-5522
- Language
- English
- Date published
- 05/1977
- Academic Unit
- Microbiology and Immunology; Internal Medicine
- Record Identifier
- 9984002374202771
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