TABLE 1.
Strain | Flavin concn. measured as: |
|
---|---|---|
μM (in culture) | μmol/mg protein | |
S. oneidensis MR-1 | 1.31 ± 0.20 | 2.8 ± 0.4 |
S. frigidimarina NCIMB 400 | 1.01 ± 0.10 | 2.4 ± 0.2 |
S. loihica PV-4 | 1.05 ± 0.16 | 5.3 ± 0.8 |
S. baltica OS155 | 0.56 ± 0.04 | 2.8 ± 0.2 |
S. amazonensis SB2B | 0.87 ± 0.28 | 1.9 ± 0.6 |
S. denitrificans OS217T | 0.54 ± 0.03 | 3.0 ± 0.2 |
Strains were grown for 16 h aerobically, and supernatant fluorescence was quantified to determine total flavin excreted. PV-4, OS155, NCIMB 400, and OS217T were grown for 30 h to reach optical densities similar to those of other strains.