Figure 1From: Rational polynomial representation of ribonucleotide reductase activityQuaternary states of R1. Modulators of RNR activity listed in this figure bind R1 to create higher order quaternary states. Tetramers exist in an equilibrium between low activity states (see k4 in Table 1) and inactive states (kcat = 0). Adapted from Scheme 1 in [4,5].Back to article page