Summary
Cathepsin B1 was purified from human placentas of different gestational ages and analyzed by isoelectric focusing on polyacrylamide gel. The enzyme was shown to consist of 3 or 4 isozymes with pI values between 5.1 and 5.7.
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Warwas, M. Isozymes of cathepsin B1 in developing human placenta. Experientia 37, 966–967 (1981). https://doi.org/10.1007/BF01971782
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DOI: https://doi.org/10.1007/BF01971782