6VLP:
reference: Crystal structure and physicochemical characterization of a phytocystatin from Humulus lupulus: Insights into its domain-swapped dimer., Moura GT, Souza AA, Garay AV, Freitas SM, Valadares NF, Biochim Biophys Acta Proteins Proteom. 2020 Sep 15;1869(1):140541. doi:, 10.1016/j.bbapap.2020.140541. PMID: 32947025

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