Table S1.

E_m values obtained using the post-MD structure and the original MtrF crystal structure for oxidized and reduced MtrF (in millivolts)

Heme	Post-MD structure		Crystal structure
	Oxidized	Reduced	Oxidized	Reduced
1	−112	−231	−113	−231
2	−94	−176	−64	−176
3	−47	−246	−5	−246
4	−141	−290	−132	−290
5	−178	−252	−177	−252
6	−137	−274	−135	−272
7	−169	−185	−169	−185
8	−214	−322	−210	−320
9	−336	−392	−332	−390
10	−296	−277	−297	−277