Figure 4From: The ancient history of the structure of ribonuclease P and the early origins of ArchaeaEvolution of RPR structure. Trees of molecular substructures reconstructed from geometrical characters of RPR structure. Trees of substructures describe the evolution of stems (S) (12,121 steps; CI = 0.790, RI = 0.772; RC = 0.610; g1 = -0.758), bulges and internal loops (B) (1,168 steps; CI = 0.775 and 0.771, with and without uninformative characters, respectively; RI = 0.546, RC = 0.423; g1 = -1.884), hairpin loops (H) (1,949 steps; CI = 0.591, RI = 0.765, RC = 0.452; g1 = -0.556), and unpaired segments that include external segments (free ends) and multiloop regions (U) (5,277 steps; CI = 0.374, RI = 0.634 RC = 0.237; g1 = -0.719). BS >50% are shown for individual nodes. Symbols in terminal leaves describe substructures in domains.Back to article page