... ferredoxin-NADP+reductase; FNRox,FNR in the oxidized state; FNRrd, FNR in the reduced state;FNRsq, FNR in the semiquinone state; Fd, ferredoxin; Fdox,Fdintheoxidized state; Fdrd, Fd ... in the reduced state; dRf, 5-deazariboflavin;WT, wild-type; E, midpoint reduction potential; ET, electron transfer;Adx, adrenodoxin; Adxrd, adrenodoxin in the reduced state;Adxox, adrenodoxin ... the interactions between Fd and FNR and Adx and AdR, ETfrom FNR to Adx is also detectable. Thus, in both,Fd/FNR and Adx/AdR, systems it has been found that the single replacement of a residue can result...