6E5M:
reference: Crystallographic structure of a complex between trypsin and a nonapeptide derived from a Bowman-Birk inhibitor found in Vigna unguiculata seeds., Fernandes JPC, Mehdad A, Valadares NF, Mourao CBF, Ventura MM, Barbosa JARG, Freitas SM, Arch Biochem Biophys. 2019 Feb 25;665:79-86. doi: 10.1016/j.abb.2019.02.013. PMID: 30817908

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