TABLE 2.
GC content of helix 9 of 23S rRNA in comparison with the overall GC content of complete rrn operons or 23S rRNA
| Strain | % GC contenta of:
|
|||
|---|---|---|---|---|
| rrn operon-23S rRNA | Helix 9 | First 30 bp of helix 9 | Apical part of helix 9 | |
| R. sphaeroides WS8 | 571 | 50 | 50 | 50 |
| R. sphaeroides 17023 | 571 | 45 | 45 | |
| R. capsulatus B10 | 552 | 45 | 45 | |
| R. capsulatus 37b4 | 552 | 64 | 45 | 83 |
| R. palustris 5D | 533 | 50 | 50 | 50 |
| B. japonicum 110 | 543 | 46 | 44 | 48 |
| B. henselae ATCC 49882 | 484 | 27 | 27 | |
| B. bacilliformis KC 584 | 484 | 35 | 35 | |
| S. fredii MSDJ 1536 | 535 | 42 | 42 | |
| R. giardinii H152 | 535 | 40 | 40 | |
| R. etli CFN42 | 535 | 44 | 45 | 43 |
| R. etli Viking I | 535 | 47 | 45 | 50 |
| R. gallicum R602 | 535 | 55 | 40 | 70 |
| R. leguminosarum ATCC 10004 | 535 | 50 | 30 | 70 |
a
The values marked in bold letters illustrate the mosaic structure of certain helices 9. Superscript numbers: 1, complete R. sphaeroides rrnA operon (7); 2, 23S rRNA of R. capsulatus (11); 3, 23S rRNA of R. palustris and B. japonicum (34); 4, 23S rRNA of B. bacilliformis (22); 5, complete rrn operon of Agrobacterium vitis (25).