#	Chain	Domain ID	Range	Family	Classification
1	A	e4pd4A1	A:27-239	Peptidase_M16,Peptidase_M16_C	309 → 309.1 → 309.1.1
2	A	e4pd4A2	A:240-457	Peptidase_M16_C	309 → 309.1 → 309.1.1
3	B	e4pd4B1	B:17-218	Peptidase_M16	309 → 309.1 → 309.1.1
4	B	e4pd4B2	B:219-368	309.1.1.0	309 → 309.1 → 309.1.1
5	C	e4pd4C1	C:262-385	Cytochrom_B_C	5068 → 5068.1 → 5068.1.1
6	C	e4pd4C2	C:1-261	Cytochrome_B, Cytochrom_B_N_2	5069 → 5069.1 → 5069.1.1
7	D	e4pd4D1	D:261-309	5013.1.1.0	5013 → 5013.1 → 5013.1.1
8	D	e4pd4D2	D:62-260	Cytochrom_C1	107 → 107.1 → 107.1.1
9	E	e4pd4E1	E:89-156,E:199-215	66.1.1.0	66 → 66.1 → 66.1.1
10	E	e4pd4E2	E:157-198	Rieske	4294 → 4294.1 → 4294.1.1
11	E	e4pd4E3	E:31-88	UCR_TM	5014 → 5014.1 → 5014.1.1
12	F	e4pd4F1	F:74-147	UCR_hinge	5071 → 5071.1 → 5071.1.1
13	G	e4pd4G1	G:2-127	UCR_14kD	5070 → 5070.1 → 5070.1.1
14	H	e4pd4H1	H:2-94	UcrQ	5016 → 5016.1 → 5016.1.1
15	I	e4pd4I1	I:2-58	UCR_UQCRX_QCR9	5017 → 5017.1 → 5017.1.1
16	J	e4pd4J1	J:1-127	V-set	11 → 11.1 → 11.1.1
17	K	e4pd4K1	K:1-107	V-set	11 → 11.1 → 11.1.1

ECOD domains (colored by index)Unclassified protein regionsNucleic acids (RNA/DNA)Ligands/cofactors