Conservation categories are defined: Categories A-E: a nucleotide exists in > 95% of the sequences studied. "Category A": the existing nucleotide is 98%-100% conserved. "Category B": the existing nucleotide is 90%-98% conserved. "Category C": the existing nucleotide is 80%-90% conserved. "Category D": the existing nucleotide is < 80% conserved. "Category E": sum of Categories A-D. "Category N": nucleotide exists in < 95% of the sequences studied. Other abbreviations used: IP: intron position. nt: nucleotide.
Information 16S rRNA 23S rRNA
3DOM ALL 3DOM ALL
General/Overall rRNA Nucleotide Conservation Category A 355 (23.0%) 178 (11.5%) 595 (20.5%) 150 (5.2%)
Category B 156 (10.1%) 175 (11.3%) 349 (12.0%) 203 (7.0%)
Category C 80 (5.2%) 116 (7.5%) 283 (9.7%) 168 (5.8%)
Category D 546 (35.4%) 395 (25.6%) 1204 (41.5%) 647 (22.3%)
Category E 1137 (73.7%) 864 (56.0%) 2431 (83.7%) 1168 (40.2%)
Category N 405 (26.3%) 678 (44.0%) 473 (16.3%) 1736 (59.8%)
TOTAL 1542 (100.0%) 1542 (100.0%) 2904 (100.0%) 2904 (100.0%)
(rRNA) Distance to Nearest "Category A" nt 1 Position 530 (34.4%) 274 (17.8%) 913 (31.4%) 240 (8.3%)
2 Positions 117 (7.6%) 77 (5.0%) 219 (7.5%) 68 (2.3%)
3 Positions 89 (5.8%) 66 (4.3%) 161 (5.5%) 51 (1.8%)
4 or More Positions 806 (52.3%) 1125 (73.0%) 1611 (55.5%) 2545 (87.6%)
(rRNA) Distance to Nearest "Category A" or "B" nt 1 Position 713 (46.2%) 505 (32.7%) 1346 (46.3%) 532 (18.3%)
2 Positions 117 (7.6%) 99 (6.4%) 235 (8.1%) 110 (3.8%)
3 Positions 77 (5.0%) 72 (4.7%) 168 (5.8%) 79 (2.7%)
4 or More Positions 635 (41.2%) 866 (56.2%) 1155 (39.8%) 2183 (75.2%)
Intron Positions (IP) All Introns 94 (100.0%) 94 (100.0%) 84 (100.0%) 84 (100.0%)
Group I Introns 46 (100.0%) 46 (100.0%) 44 (100.0%) 44 (100.0%)
Group II Introns 4 (100.0%) 4 (100.0%) 10 (100.0%) 10 (100.0%)
Archaeal Introns 14 (100.0%) 14 (100.0%) 6 (100.0%) 6 (100.0%)
Spliceosomal Introns 27 (100.0%) 27 (100.0%) 26 (100.0%) 26 (100.0%)
Other Introns 12 (100.0%) 12 (100.0%) 3 (100.0%) 3 (100.0%)
Information 16S rRNA 23S rRNA
3DOM ALL 3DOM ALL
All Introns # of Introns (All Introns) Total 94 (100.0%) 94 (100.0%) 84 (100.0%) 84 (100.0%)
IP Adjacent to at least one "Category A" nt 56 (59.6%) 32 (34.0%) 50 (59.5%) 28 (33.3%)
IP Adjacent to at least one "Category A" or "B" nt 70 (74.5%) 49 (52.1%) 64 (76.2%) 46 (54.8%)
Group I Introns # of Introns (Group I Introns) Total 46 (100.0%) 46 (100.0%) 44 (100.0%) 44 (100.0%)
IP Adjacent to at least one "Category A" nt 31 (67.4%) 20 (43.5%) 25 (56.8%) 13 (29.5%)
IP Adjacent to at least one "Category A" or "B" nt 33 (71.7%) 26 (56.5%) 33 (75.0%) 22 (50.0%)
Group II Introns # of Introns (Group II Introns) Total 4 (100.0%) 4 (100.0%) 10 (100.0%) 10 (100.0%)
IP Adjacent to at least one "Category A" nt 2 (50.0%) 1 (25.0%) 6 (60.0%) 6 (60.0%)
IP Adjacent to at least one "Category A" or "B" nt 3 (75.0%) 2 (50.0%) 9 (90.0%) 7 (70.0%)
Archaeal Introns # of Introns (Archaeal Introns) Total 14 (100.0%) 14 (100.0%) 6 (100.0%) 6 (100.0%)
IP Adjacent to at least one "Category A" nt 11 (78.6%) 7 (50.0%) 5 (83.3%) 4 (66.7%)
IP Adjacent to at least one "Category A" or "B" nt 13 (92.9%) 12 (85.7%) 5 (83.3%) 5 (83.3%)
Spliceosomal Introns # of Introns (Spliceosomal Introns) Total 27 (100.0%) 27 (100.0%) 26 (100.0%) 26 (100.0%)
IP Adjacent to at least one "Category A" nt 12 (44.4%) 3 (11.1%) 16 (61.5%) 7 (26.9%)
IP Adjacent to at least one "Category A" or "B" nt 19 (70.4%) 7 (25.9%) 20 (76.9%) 14 (53.8%)
Other Introns # of Introns (Other Introns) Total 12 (100.0%) 12 (100.0%) 3 (100.0%) 3 (100.0%)
IP Adjacent to at least one "Category A" nt 8 (66.7%) 6 (50.0%) 1 (33.3%) --0 (---%)
IP Adjacent to at least one "Category A" or "B" nt 10 (83.3%) 8 (66.7%) 1 (33.3%) 1 (33.3%)