Table 1. UV–vis of active centers in XO, AO, SO, mARC, cyt b5, and cyt b5R.
| Mo center | Heme center | [2Fe–2S] | FAD/FADH | Others | |||
|---|---|---|---|---|---|---|---|
| Oxidized | Reduced | Oxidized | Reduced | ||||
| XO | — | — | — | — | 450 (br) | 550 (sh) | — |
| AO | — | — | — | — | 450 (br) | 550 (sh) | — |
| mARC | 450 (sh) 370–400 (br, sh) | 350 (sh) | — | — | — | — | — |
| SO | 360, 480 (sh) | 400 (sh) | 413, 520, 560 | 424, 527, 557 | — | — | — |
| cyt b5 | — | — | 413, 520, 560 | 423, 527, 557 | — | — | — |
| cyt b5R (oxidized) | — | — | — | — | — | — | 391, 462, 480 (sh) |
| cyt b5R (reduced) | — | — | — | — | — | — | 320 (br) 520 (br) |
cyt b5, Cytochrome b5; cyt b5R, cytochrome b5 reductase; br, broad; sh, shoulder.