Summary
Two pepsin-inhibitors, a peptide produced byStreptomyces EF-44-201 and a peptide produced byActinomycetes have been found to inactivate completely the human group I pepsins, but to have little activity against the group II pepsins.
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Murakami, K., Misaki, F., Sasaki, Z. et al. Specific inhibition of human group I pepsins by two pepsin inhibitors. Gastroenterol Jpn 12, 199–201 (1977). https://doi.org/10.1007/BF02781763
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DOI: https://doi.org/10.1007/BF02781763