Table 2.

Distances between the heme iron and the N _ε of the imidazole of the proximal histidine in all available chlorite dismutase structures (www.pdb.org)

PDB code	Protein	Ligand	Resolution	pH	Minimum distance (Å)	Maximum distance (Å)	Average distance (Å)	Subunits per asymmetric unit	Reference
5LOQ	Copro‐LmHemQ	–	1.69	9.0	2.4	3.0	2.64 ± 0.21	5	This work
3NN1	NdCld wild‐type	Imidazole	1.85	7.5	2.1	2.1	2.10	5	30
3NN2	NdCld wild‐type	Cyanide	1.94	7.5	2.2	2.2	2.20	5	30
3NN3	NdCld R173A	–	2.60	4.6	2.2	2.3	2.24 ± 0.05	5	30
3NN4	NdCld R173K	–	2.70	4.0	2.1	2.2	2.18 ± 0.04	5	30
4M05	NdCld R173E	–	2.28	4.5	2.1	2.2	2.16 ± 0.05	5	31
4M06	NdCld W145F	Cyanide	2.60	4.5	2.1	2.2	2.12 ± 0.04	5	31
4M07	NdCld W145F		2.50	4.5	2.1	2.3	2.20 ± 0.06	5	31
4M08	NdCld W145V	Imidazole	2.80	4.0	2.3	2.5	2.44 ± 0.08	5	31
4M09	NdCld W146Y R173Q	Imidazole	2.45	3.5	2.5	2.6	2.58 ± 0.04	5	31
2VXH	AoCld	Thiocyanate	2.10	5.5	2.1	2.2	2.13 ± 0.05	6	32
3Q08	DaCld	Nitrite	3.05	6.5	2.2	2.6	2.33 ± 0.10	20	33
3Q09	DaCld	Nitrite	3.00	9.0	2.0	2.3	2.14 ± 0.08	20	33
5A12	MaCld	Azide	1.40	6.0	2.1	2.2	2.16 ± 0.05	5	34
5A13	MaCld	Thiocyanate	1.75	8.5	2.1	2.2	2.17 ± 0.05	10	34
3QPI	NwCld	–	2.10	7.9	2.1	2.2	2.15 ± 0.05	2	35