Table 3 Best fit EXAFS models

WT, wild-type.

SampleLigand*r (Å)σ2 (×103 Å2)%Rχν2
WT Ni-HpUreE2 NHis102.15(2)3(1)3.836.6
2 NHis52.06(1)2.5(7)
2 N/O2.06(1)2.5(7)
H152A Ni-HpUreE2 NHis102.09(1)3.7(5)5.232.4
4 N/O2.09(1)3.7(5)
WT Zn-HpUreE2 NHis51.99(2)5(1)3.7817.3
2 N/O2.07(3)12(5)
1 Br2.38(1)4.3(4)
2 NHis52.00(1)4(1)2.6112.8
1 NHis52.16(1)1(1)
1 N/O2.00(1)3(2)
1 Br2.39(1)4.8(5)
H152A Zn-HpUreE2 NHis52.01(1)6.7(5)1.853.96
2 N/O2.01(1)6.7(5)
1 Br2.39(1)3.4(2)
  • * The superscripted number is the angle α for the histidine ligands.