Table 4. Comparative analysis of genes involved in carbohydrate metabolism, ranked according to percentage of the subsystem in the Osedax symbiont Rs1.
| Functional categorya | Osedax symbiont Rs1b | Osedax symbiont Rs2 | Neptuniibacter caesariensis | Neptunomonas japonica | ||||
|---|---|---|---|---|---|---|---|---|
| |
Gene no. |
% |
Gene no. |
% |
Gene no. |
% |
Gene no. |
% |
| Central metabolismc | 116 | 49.2 | 129 | 43.6 | 103 | 61.7 | 126 | 48.6 |
| Fermentation | 32 | 13.6 | 41 | 13.9 | 40 | 24.0 | 62 | 23.9 |
| C1 compounds | 31 | 13.1 | 40 | 13.5 | 5 | 3.0 | 51 | 19.7 |
| Monosaccharides | 24 | 10.2 | 26 | 8.8 | 1 | 0.6 | 1 | 0.4 |
| Organic acids | 18 | 7.6 | 30 | 10.1 | 12 | 7.2 | 10 | 3.9 |
| Sugar alcohols | 11 | 4.7 | 18 | 6.1 | 4 | 2.4 | 5 | 1.9 |
| Amino sugars | 2 | 0.8 | 9 | 3.0 | 0 | 0.0 | 0 | 0.0 |
| Otherd | 2 | 0.8 | 3 | 1.0 | 2 | 1.2 | 4 | 1.5 |
| Total | 236 | 296 | 167 | 260 | ||||
a
Based on SEED subsystems within carbohydrate metabolism.
b
Gene copy numbers based on the Nextera library construction are expected to reflect a relative dedication of the genome to each gene category.
c
This category includes glycolysis/gluconeogenesis, the tricarboxylic acid cycle and pentose phosphate pathway.
d
This category includes di- and oligosaccharides and carbon storage.