TABLE 2.
Presence of nitrogen metabolism-related genes in the genomes of Prochlorococcus strains MED4, MIT9313, and SS120 and Synechococcus strain WH8102
| Gene(s) | Protein(s) | Presencea in strain:
|
|||
|---|---|---|---|---|---|
| MED4 | MIT9313 | SS120 | WH8102 | ||
| nif cluster | Nitrogenase and cofactors | − | − | − | − |
| narB | Nitrate reductase | − | − | − | + |
| nirA | Nitrite reductase | − | + | − | + |
| glnA | Glutamine synthetase | + | + | + | + |
| gdhA | Glutamate dehydrogenase | − | + | − | − |
| glsF | Fd-glutamate synthase | + | + | + | + |
| ure cluster | Urease and cofactors | + | + | − | + |
| amt1 | Ammonium transporter | + | + | + | + |
| Amino acid transporters | − | + | + | + | |
| Oligopeptide transporters | + | + | + | + | |
| cynABD | Cyanate transporter | + | − | − | + |
| cynS | Cyanate lyase | + | − | − | + |
a
+, present; −, absent.