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 Positions117 (7.6%) 77 (5.0%) 219 (7.5%) 68 (2.3%)
3 Positions89 (5.8%) 66 (4.3%) 161 (5.5%) 51 (1.8%)
4 or More Positions806 (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 Positions151 (9.8%) 142 (9.2%) 325 (11.2%) 169 (5.8%)
3 Positions69 (4.5%) 64 (4.2%) 147 (5.1%) 73 (2.5%)
4 or More Positions609 (39.5%) 831 (53.9%) 1086 (37.4%) 2130 (73.3%)
Intron Positions (IP) All Introns 84 (100.0%) 84 (100.0%) 69 (100.0%) 69 (100.0%)
Group I Introns 39 (46.4%) 39 (46.4%) 41 (59.4%) 41 (59.4%)
Group II Introns 3 (3.6%) 3 (3.6%) 8 (11.6%) 8 (11.6%)
Archaeal Introns 14 (16.7%) 14 (16.7%) 6 (8.7%) 6 (8.7%)
Spliceosomal Introns 22 (26.2%) 22 (26.2%) 14 (20.3%) 14 (20.3%)
Other Introns 12 (14.3%) 12 (14.3%) 3 (4.3%) 3 (4.3%)
All Introns # of Introns (All Introns) Total 84 (100.0%) 84 (100.0%) 69 (100.0%) 69 (100.0%)
IP Adjacent to at least one "Category A" nt 50 (59.5%) 30 (35.7%) 38 (55.1%) 22 (31.9%)
IP Adjacent to at least one "Category A" or "B" nt 63 (75.0%) 54 (64.3%) 59 (85.5%) 35 (50.7%)
Group I Introns # of Introns (Group I Introns) Total 39 (100.0%) 39 (100.0%) 41 (100.0%) 41 (100.0%)
IP Adjacent to at least one "Category A" nt 25 (64.1%) 19 (48.7%) 23 (56.1%) 12 (29.3%)
IP Adjacent to at least one "Category A" or "B" nt 27 (69.2%) 23 (59.0%) 30 (73.2%) 19 (46.3%)
Group II Introns # of Introns (Group II Introns) Total 3 (100.0%) 3 (100.0%) 8 (100.0%) 8 (100.0%)
IP Adjacent to at least one "Category A" nt 2 (66.7%) 1 (33.3%) 4 (50.0%) 4 (50.0%)
IP Adjacent to at least one "Category A" or "B" nt 3 (100.0%) 2 (66.7%) 7 (87.5%) 5 (62.5%)
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 22 (100.0%) 22 (100.0%) 14 (100.0%) 14 (100.0%)
IP Adjacent to at least one "Category A" nt 10 (45.5%) 1 (4.5%) 6 (42.9%) 2 (14.3%)
IP Adjacent to at least one "Category A" or "B" nt 16 (72.7%) 5 (22.7%) 10 (71.4%) 5 (35.7%)
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 7 (58.3%) 7 (58.3%) 1 (33.3%) --0 ---
IP Adjacent to at least one "Category A" or "B" nt 9 (75.0%) 8 (66.7%) 1 (33.3%) 1 (33.3%)