Process for purification of crude kallikrein

摘要

A process for purification of crude kallikrein utilizing a specific affinity of kallikrein to p-aminobenzamidine, which comprises bringing a solution, containing kallikrein and contaminated by other undesirable enzymes and proteins, into contact with a water-insoluble carrier combined with p-aminobenzamidine, exclusively eluting out the other enzymes and proteins from the carrier by the use of a buffer solution of lower NaCl concentration and then exclusively eluting out kallikrein by the use of a buffer solution of higher NaCl concentration.