Table 4.

EXAFS Fitting Parameters for [2Fe-2S] Fra2-Grx3. Fits are filtered over the main peaks in the FT and are shown from 1–14 Å⁻¹.

	Atom	CNa	R (Å)b	σ2 × 103c	F′
A	S	4	2.26	7.6	0.669
	Fe	1	2.67	3.9
B	S	2	2.24	3.7	0.454
	S	2	2.33	11.2
	Fe	1	2.68	4.8
C	S	2	2.26	4.4	0.296
	N	2	2.06	4.6
	Fe	1	2.67	4.6
D	S	3	2.26	5.2	0.350
	imidazoled	1	2.05	2.1
	Fe	1	2.68	3.4

^aCN = coordination number

^bR = metal-scatterer distance

^cσ² = Mean square variation in R

^dmultiple scattering paths of imidazole ring are included