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Iron quantification, by a colorimetric assay, of the Dps proteins from N. punctiforme and E. coli (EcDps)
Hemoglobin served as a control. Standard errors were derived from four independent experiments.
| Protein sample | Fe2+ ions/protein dodecamer |
|---|---|
| NpDps1 | 2.5 ± 0.6 |
| NpDps2 | 0.7 ± 0.3 |
| NpDps3 | 15.1 ± 2.5 |
| EcDps | 11.0 ± 1.9 |
| Hemoglobin tetramer | 4.2 ± 0.1 |
