6U2F:
reference: Design of Organo-Peptides As Bipartite PCSK9 Antagonists., Burdick DJ, Skelton NJ, Ultsch M, Beresini MH, Eigenbrot C, Li W, Zhang Y, Nguyen H, Kong-Beltran M, Quinn JG, Kirchhofer D, ACS Chem Biol. 2020 Jan 30. doi: 10.1021/acschembio.9b00899. PMID: 31962046

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