4Y5D:
reference: Artificial Ligands of Streptavidin (ALiS): Discovery, Characterization, and Application for Reversible Control of Intracellular Protein Transport., Terai T, Kohno M, Boncompain G, Sugiyama S, Saito N, Fujikake R, Ueno T, Komatsu T, Hanaoka K, Okabe T, Urano Y, Perez F, Nagano T, J Am Chem Soc. 2015 Aug 26;137(33):10464-7. doi: 10.1021/jacs.5b05672. Epub 2015 , Aug 11. PMID: 26261872

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