Rapid purification of a 110-kilodalton hemolysin of Actinobacillus pleuropneumoniae by monoclonal antibody-affinity chromatography
1992
Ma, J. | Inzana, T.J.
An efficient, single-step method for purification of the 110-kilodalton (kDa) hemolysin of Actinobacillus pleuropneumoniae was developed. An immunoaffinity column was made by cross-linking murine monoclonal antibody 8C2 to the 110-kDa hemolysin of A pleuropneumoniae strain J45 serotype 5 to protein A-agarose beads. Purified hemolysin with high hemolytic activity was obtained after washing the column with phosphate-buffered saline solution, and eluting the hemolysin with 50 mM diethylamine, pH 11.0. The same column was also used to purify the hemolysin from A pleuropneumoniae strain 4074 serotype 1. The purification procedure could be completed within 5 hours, and almost 50% of the total hemolytic activity and hemolysin protein was recovered in pure form.
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