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. 2021 Jul 5;4:836. doi: 10.1038/s42003-021-02357-x

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© The Author(s) 2021

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Fig. 3 — a Tryptophan fluorescence trace of NorC in FSEC, shifts to a slightly higher molecular mass when complexed with ICab. b NorB does not display a shift indicating a lack of interaction with ICab (inset). c, d Corresponding MST profiles of NorC and NorB respectively with K_d = 37.5 ± 16 nM for ICab and NorC but no detectable affinity for NorB. n = 2 for NorB vs ICab titration and n = 3 for NorC vs ICab for independent replicates. Source data are provided in the source data file.