Table 4.

Comparisons of Selected Structural Metrics for Synthetic and Protein-Bound [Fe₄S₄] Clusters

			[L]y/ z b				proteinb
metrica		[SAlk]−/ 1+	[SAlk]−/ 2+	[SAr−]/ 1+	[SAr−]/ 2+	[SAr−]/ 3+	Fd	HP
	min	2.27	2.23	2.24	2.22	2.22	2.18	2.18
Fe-S (Å)	max	2.34	2.34	2.37	2.33	2.31	2.35	2.36
	avg	2.32	2.29	2.31	2.28	2.27	2.28	2.29
	min	102.5	100.6	102.5	101.8	100.6	99.2	101.6
S-Fe-S (°)	max	106.5	107.8	107.5	107.3	105.6	109.0	107.7
	avg	104.4	104.1	104.8	104.3	103.3	104.3	104.8
	min	2.45	2.37	2.38	2.38	2.42	2.34	2.34
Fe4 (Å3)	max	2.51	2.55	2.46	2.47	2.50	2.48	2.37
	avg	2.49	2.44	2.42	2.41	2.46	2.40	2.36
	min	5.71	5.46	5.70	5.44	5.27	5.24	5.44
S4 (Å3)	max	5.81	5.59	5.76	5.61	5.28	5.67	5.85
	avg	5.77	5.52	5.74	5.51	5.28	5.52	5.60
	min	9.75	9.39	9.57	9.42	9.42	9.34	9.38
Fe4S4 (Å3)	max	9.97	9.88	9.76	9.69	9.61	9.72	9.52
	avg	9.88	9.61	9.68	9.52	9.52	9.51	9.44

^amin, max, and avg refer to the minimum, maximum, and average values of all observations for members of that type.

^bData and citations are available in Supporting Information.