Table 2. General features of the genomes of two Polynucleobacter strains representing lineages F10 and F17, and examples for differences in gene content between the two genomes.
| Feature/genes | QLW-P1DMWA-1 | MWH-MoK4 |
|---|---|---|
| Origin | Pond-1 | Lake Mondsee |
| RLBH groupa | F10 | F17 |
| Genome size (Mbp) | 2.16 | 2.03 |
| GC content (mol%) | 44.8 | 45.2 |
| Coding bases (% of total) | 93.1 | 93.5 |
| Protein-coding genes | 2088 | 2059 |
| RNA-coding genes | 48 | 48 |
| Replicons | 1 | 1 |
| Ribosomal operons | 1 | 1 |
| Acc. number genome | CP000655 | CP007501 |
| Acc. number 16S rRNA | AJ879783 | AJ550654 |
| Inorganic nutrients | ||
| Phosphate/phosphite/phosphonate ABC transporter | − | + |
| ABC-type Fe3+ transport system | − | + |
| ABC-type Fe3+-hydroxamate transport system/ABC-type cobalamin/Fe3+-siderophores transporter | − | + |
| feoAB genes (uptake of Fe2+) | + | − |
| ABC-type nitrate/nitrite/cyanate transporter | + | − |
| Nitrate reductase (assimilatory) | + | − |
| Nitrite reductase (assimilatory) | + | − |
| Cyanate lyase (releases NH3 and CO2 from cyanate) | + | − |
| Urease and ABC-type urease transporter | + | − |
| Amt family ammonia transporter | 1 gene | 2 genes |
| Regulation of K+ transport (kdpD/kdpE) | + | − |
| Oxidative phosphorylation/energy metabolism | ||
| Cytochrome bd-I terminal oxidase (CydAB) | + | − |
| Fumarate reductase | − | + |
| Carbon monoxide dehydrogenase | − | + |
| Acetate permease actP | + | − |
| Anoxygenic photosynthesis | ||
| Photosynthesis gene cluster | − | + |
| Motility | ||
| Flagella genes | − | + |
| Putative sigma-54 | − | + |
| Oxidative stress | ||
| Catalase | 2 genes | − |
| Other | ||
| Cellulose synthase operon protein C | + | − |
| Cellulose synthase catalytic subunit (UDP-forming) | + | − |
Abbreviations: RLBH, reverse line blot hybridization; rRNA, ribosomal RNA.
a
RLBH group (Jezbera et al., 2011).