5TYI:
reference: Discovery, Development, and Cellular Delivery of Potent and Selective Bicyclic Peptide Inhibitors of Grb7 Cancer Target., Watson GM, Kulkarni K, Sang J, Ma X, Gunzburg MJ, Perlmutter P, Wilce MCJ, Wilce JA, J Med Chem. 2017 Nov 22;60(22):9349-9359. doi: 10.1021/acs.jmedchem.7b01320. Epub, 2017 Nov 10. PMID: 29083893

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