Table 7. Available SORs X-ray Crystallographic Structures.
| type | organism | protein | PDB | resolution (Å) | oligomerization | center oxidation State | ref |
|---|---|---|---|---|---|---|---|
| 1Fe-SOR | Pyrococcus furiosus (Archaea) | WT | 1DO6 | 2.0 | tetrameric | 1/2 oxidized, 1/2 reduced | (71b) |
| 1DQI | 1.7 | oxidized | |||||
| 2.0 | reduced | ||||||
| Pyrococcus horikoshii Ot3 (Archaea) | WT | 2HVB | 2.5 | tetrameric | oxidized | structural genomics | |
| Thermotoga maritima (Bacteria) | WT | 2AMU | 2.0 | tetrameric | reduceda | structural genomics | |
| 3QZB | 1.1 | tetrameric | |||||
| Treponema pallidum (Bacteria) | WT | 1Y07 | 1.55 | dimeric | reducedb | (71c) | |
| 2Fe-SOR | Desulfovibrio desulfuricans (Bacteria) | WT | 1DFX | 1.9 | dimeric | reducedc | (71a) |
| Desulfoarculus baarsii (Bacteria) | Glu47Ala | 1VZI | 1.15 | dimeric | reduced | (390) | |
| Glu46Ala | 1VZG | 1.69 | oxidized, ferrocyanide-bound | ||||
| Glu46Ala | 1VZH | 1.69 | oxidized, ferrocyanide-bound | ||||
| WT | 2JI1 | 1.7 | dimeric | reducedc | (370c) | ||
| Glu114Ala | 2JI2 | 1.7 | reduced, NO3-bound | ||||
| Glu114Ala | 2JI3 | 1.95 | oxidized, (hydro)peroxo-bound |
a
The center has the glutamate-residue unbound and thus is considered to be in the reduced form.
b
Some of the residues in the loop containing the motif -EKHVP were not modeled.
c
Assuming reduced state from [Fe(His)4Cys] conformation.