Frequency of Base-pair predictions within a "Suboptimal Population" for selected 16S rRNAs. The frequency of the prediction of each of the base-pairs in the comparative structure model in a set of 750 structure predictions (optimal + top 749 suboptimal) is displayed on the comparative structure model. Base-pairs marked in red are predicted correctly in all 750 structure predictions. Base-pairs marked in blue are predicted correctly in 600 to 749 structure predictions. Base-pairs marked in magenta are predicted correctly in 151 to 599 structure predictions, base-pairs marked in green are predicted correctly in only 1 to 150 structure predictions, and base-pairs marked in black are not predicted in any of the 750 structure predictions (some are non-canonical or occur in pseudo-knots, and thus are not expected to be predicted correctly). Full-sized versions of each annotated structure diagram are available at our website. A: Archaea 16S rRNA Haloferax volcanii. B: Archaea 16S rRNA Methanospirillum hungatei.