*Details for Individual Sequences in the Dataset are Available Under the Respective Links

  Overall Archaea Bacteria Eukaryotic Chloroplast Eukaryotic Mitochondrion Eukaryotic Nuclear
16S rRNA            
Sequences 496 23 195 33 112 133
Average Optimal Accuracy1,2 40% 62% 48% 42% 30% 34%
Total Suboptimals            
Count 370,848 17,227 146,055 24,717 83,232 99,617
Average 748 749 749 749 743 749
% of Total Subopts - 5 39 7 22 27
Better Than Optimal3            
Count 137,420 4,791 58,537 10,848 27,753 35,491
Average 277 208 300 329 248 267
% of Total Subopts 37 28 40 44 33 36
Worse Than Optimal3            
Count 174,170 10,991 72,771 11,168 36,116 43,124
Average 351 478 373 338 322 324
% of Total Subopts 47 64 50 45 44 43
Same as Optimal3            
Count 59,258 1,445 14,747 2,701 19,363 21,002
Average 119 63 76 82 173 158
% of Total Subopts 16 8 10 11 23 21
  1. Only canonical base pairs (G-C,C-G,A-U,U-A,G-U,U-G) are considered.
  2. Accuracy values are determined by averaging the calculated accuracy values (number of comparatively predicted base-pairs that appear in the optimal structure prediction for a given sequence) for each individual sequence within a particular phylogenetic category.
  3. Number of suboptimal structure predictions within 12 kcal/mol of the optimal structure prediction with an accuracy higher, lower or equal to the optimal structure prediction for their respective sequence. Accuracy of a suboptimal structure prediction is calculated in the same manner as the accuracy for the optimal structure prediction. See RNA Secondary Structure Prediction and Prediction Accuracy Calculations in Methods.