3UL5:
reference: X-ray crystallography and NMR studies of domain-swapped canecystatin-1., Valadares NF, de Oliveira-Silva R, Cavini IA, de Almeida Marques I, Pereira HD, Soares-Costa A, Henrique-Silva F, Kalbitzer HR, Munte CE, Garratt RC, FEBS J. 2012 Dec 14. doi: 10.1111/febs.12095. PMID: 23241243

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