Table 3.
Best fit EXAFS models
| Sample | Ligand(a) | r (Å) | σ2 (×103 Å2) | %R | χν2 |
|---|---|---|---|---|---|
| WT Ni-HpUreE | 2 NHis10 | 2.15(2) | 3(1) | 3.8 | 36.6 |
| 2 NHis5 | 2.06(1) | 2.5(7) | |||
| 2 N/O | 2.06(1) | 2.5(7) | |||
| H152A Ni-HpUreE | 2 NHis10 | 2.09(1) | 3.7(5) | 5.2 | 32.4 |
| 4 N/O | 2.09(1) | 3.7(5) | |||
| WT Zn-HpUreE | 2 NHis5 | 1.99(2) | 5(1) | 3.78 | 17.3 |
| 2 N/O | 2.07(3) | 12(5) | |||
| 1 Br | 2.38(1) | 4.3(4) | |||
| 2 NHis5 | 2.00(1) | 4(1) | 2.61 | 12.8 | |
| 1 NHis5 | 2.16(1) | 1(1) | |||
| 1 N/O | 2.00(1) | 3(2) | |||
| 1 Br | 2.39(1) | 4.8(5) | |||
| H152A Zn-HpUreE | 2 NHis5 | 2.01(1) | 6.7(5) | 1.85 | 3.96 |
| 2 N/O | 2.01(1) | 6.7(5) | |||
| 1 Br | 2.39(1) | 3.4(2) |
(a)
The superscripted number is the angle α for the His ligands.