title: Rapid purification of a 110-kilodalton hemolysin of Actinobacillus pleuropneumoniae by monoclonal antibody-affinity chromatography.
abstract: 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.
authors.affiliation: Department of Pathobiology, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg 24061.
authors.forename: J
authors.initials: J
authors.lastname: Ma
authors.forename: T J
authors.initials: TJ
authors.lastname: Inzana
mesh_terms: D016977:Actinobacillus pleuropneumoniae / Q000737:chemistry*; D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology*; D002846:Chromatography, Affinity; D004591:Electrophoresis, Polyacrylamide Gel; D006460:Hemolysin Proteins / Q000302:isolation & purification*; D008863:Microspheres
chemical_list: D000911:Antibodies, Monoclonal; D006460:Hemolysin Proteins