Fig. 6. Preferential population of CYP17A1/abiraterone major conformation upon binding of cytb₅. ¹H–¹⁵N correlations for Asp 139 (C–D loop), Thr 423 (β-meander) and Trp 499 (β5 strand) in the absence (blue) and presence (red) of 0.4 equivalents of cytb₅.