Fig. 3

The triplet interface propensities for residues in protein 1QTQ_A (a and b) and 2ZZM_A (c and d). In A and C, the residues colored from white to blue (stands for propensity values from −0.0149 to 3.1023), and the darker the blue color of the residues, the more likely the residues are involved in RNA-protein interactions. In B and D, the residues having triplet interface propensities larger than the average propensity value are colored blue, the residues interacting with RNA is colored red, those residues colored yellow are the overlaps of the residues colored blue and red. All of the RNA molecules are colored orange