Table 1.
Organisma | N. adriaticus NF5 | N. piranensis D3C | N. maritimus SCM1 | N. koreensis AR1 | N. sediminis AR2 | C. symbiosum A | N. brevis CN25 |
---|---|---|---|---|---|---|---|
Habitat | Surface water | Surface water | Aquarium gravel | Arctic sediment | Arctic sediment | Sponge symbiont | Open ocean |
Genome size (Mb) | 1.80 | 1.71 | 1.65 | 1.64 | 1.69 | 2.05 | 1.23 |
G+C content (%) | 33.4 | 33.8 | 34.2 | 34.2 | 33.6 | 57.4 | 33.2 |
CDSb | 2,184 | 2,161 | 1,796 | 1,890 | 1,974 | 2,014 | 1,445 |
16S-23S rRNA genes | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Number of tRNAsc | 43 (45) | 43 (44) | 44 | 38 | 37 | 45 | 42 |
Nitrite reductase genes (nirK) | 2 | 1 | 2 | 1 | 1 | 0 | 1 |
Urease | − | + | − | − | + | + | − |
Flagellad | + | − | − | − | − | − | − |
Photolyased | + | + | − | − | − | − | + |
“Ca. Nitrosopumilus maritimus” SCM1 (CP000866), “Ca. Nitrosopumilus koreensis” AR1 (CP003842), “Ca. Nitrosopumilus sediminis” AR2 (CP003843), “Ca. Cenarchaeum symbiosum” A (DP000238), “Ca. Nitrosopelagicus brevis” CN25 (CP007026)
Coding DNA sequences
Number in brackets includes putative tRNAs. It should be noted that the number of tRNAs might be underrepresented as archaeal tRNAs sometimes possess non-canonical introns.
Present in the incomplete genomes of “Ca. Nitrosoarchaeum limnia” strains SFB1 and BG20.