Immunochemistry of Diphtheria-azo-toxins

The Immunochemistry of Toxins and Toxoids

Methods for the purification and crystallization of tetanal toxin are described. The methods consist of the multiphase fractionation system involving methanol as the organic precipitating agent under controlled conditions of pH, ionic strength, protein concentration, and temperature. Crystalline tetanal toxin has an electrophoretic mobility of 2.8 x 10(-5) in veronal buffer of 0.1 ionic strengt...

Comparative Studies on the Purification of Tetanus and Diphtheria Toxins.

Diphtheria toxin has been identified as a typical heat-coagulable protein (Eaton 1936 a, 1937; Pappenheimer 1937). If other toxins have chemical properties similar to diphtheria toxin, they might be isolated by similar methods. Using a gelatin hydrolysate medium, Pappenheimer and Johnson (1936, 1937) have produced diphtheria toxin which may be obtained in a relatively pure state by simple fract...

Immunochemistry.

Immunochemistry.

Diphtheria toxin, diphtheria-related fusion protein toxins, and the molecular mechanism of their action against eukaryotic cells

Diphtheria toxin remains one of the most successfully studied of the bacterial protein toxins. A detailed understanding of the structure function relationships of the toxin and the role of each domain in the intoxication process is well understood. This understanding has led to the development of diphtheria toxin-related fusion protein toxins which are targeted toward specific cell surface rece...