Position and number of RCRRs, projected on a linear representation of the α/β fold. α-helices and β-strands are depicted as cylinders and arrows, respectively, the linking loops are not shown. Predicted RCRRs are represented by coloured triangles. Each triangle represents a RCRR in one distinct homologous protein family. Triangles are coloured by the respective window score W (light green 1.8 ≤ W ≤ 2.7, dark green 2.8 ≤ W ≤ 3.7, orange 3.8 ≤ W ≤ 4.7, red 4.8 ≤ W).