Abstract
Tonin, esterase B, antigen ψ and kallikrein from the rat submandibular gland were purified by fast protein liquid chromatography with Mono P or Mono Q columns. The purity of the separated proteins was evaluated by sodium dodecyl sulphate polyacrylamide gel electrophoresis and by isoelectrofocusing in flat-bed polyacrylamide gel. Tonin and esterase B were purified by DE-52 cellulose anion-exchange chromatography and chromatofocusing on Mono P in two and three steps, respectively. Antigen ψ and kallikrein were purified by a two-step procedure using DE-52 cellulose and Mono Q anion-exchange chromatography. The high resolution power of Mono Q revealed the different isoenzymes of kallikrein.
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