6DHR:
reference: Discovery and Characterization of Cyclotides from Rinorea Species., Niyomploy P, Chan LY, Harvey PJ, Poth AG, Colgrave ML, Craik DJ, J Nat Prod. 2018 Nov 26;81(11):2512-2520. doi: 10.1021/acs.jnatprod.8b00572. Epub, 2018 Nov 2. PMID: 30387611

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