Files in this Data Supplement:

• Supplemental file 1 - Fig. S1, CD spectra of UA159sp and TPC3; Fig. S2, DOSY spectrum of TPC3; Fig. S3, TOCSY of UA159sp; Fig. S4, 2D TOCSY of TPC3; Fig. S5, NOESY of UA159sp; Fig. S6, NOESY of TPC3; Fig. S7, type and number of NOEs for each residue; Fig. S8, interresidue NOE constraints, CSI values, and ₃J_H^N_{H<.sub>α values; Table S1, ¹H chemical shift values for UA159sp and TPC3
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