6XTU:
reference: Engineering and application of a biosensor with focused ligand specificity., Della Corte D, van Beek HL, Syberg F, Schallmey M, Tobola F, Cormann KU, Schlicker C, Baumann PT, Krumbach K, Sokolowsky S, Morris CJ, Grunberger A, Hofmann E, Schroder GF, Marienhagen J, Nat Commun. 2020 Sep 25;11(1):4851. doi: 10.1038/s41467-020-18400-0. PMID: 32978386

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