Table 2. Overview of the symbiont metagenomes.
| Riftia 1 symbiont | Riftia 2 symbiont | Tevnia symbiont | |
|---|---|---|---|
| Draft genome size (large contigs, Mbp) | 3.68 | 3.71 | 3.64 |
| GC content (%) of large contigs | 58.6 | 58.6 | 58.2 |
| Coverage | 25 × | 13 × | 15 × |
| Number of shotgun reads total | 467 070 | 205 880 | 212 833 |
| Number of large contigs | 316 | 414 | 184 |
| Average size (kb) of large contigs | 11.6 | 9.0 | 19.8 |
| N50 size (kb) of large contigs | 28.4 | 24.6 | 92.7 |
| Size (kb) of largest contig | 95.4 | 76.8 | 248.7 |
| Q40 value (quality of reads, %) | 99.4 | 98.8 | 99.3 |
| Protein-coding genes (CDS) | 3209 | 3515 | 3230 |
| RNA-coding genes | 45 | 51 | 47 |
General features of the 454 genome sequences obtained from endosymbionts of the deep-sea tubeworms Riftia pachyptila and Tevnia jerichonana. For the genomic comparison, Riftia symbiont sequences were obtained for bacteria from two different Riftia tubeworms. Large contigs exhibit a minimum size of 500 kb. Short genomic fragments (<500 bp) were excluded from the sequences and were not used for annotation.