#	Chain	Domain ID	Range	Family	Classification
1	A	e4kprA1	A:171-292	Pyr_redox	2003 → 2003.1 → 2003.1.2
2	A	e4kprA2	A:11-170,A:293-366	FAD_binding_2,Pyr_redox_2	2003 → 2003.1 → 2003.1.2
3	A	e4kprA3	A:367-494	Pyr_redox_dim	244 → 244.2 → 244.2.1
4	B	e4kprB1	B:171-292	Pyr_redox	2003 → 2003.1 → 2003.1.2
5	B	e4kprB2	B:10-170,B:293-366	FAD_binding_2,Pyr_redox_2	2003 → 2003.1 → 2003.1.2
6	B	e4kprB3	B:367-493	Pyr_redox_dim	244 → 244.2 → 244.2.1
7	E	e4kprE1	E:171-292	Pyr_redox	2003 → 2003.1 → 2003.1.2
8	E	e4kprE2	E:10-170,E:293-366	FAD_binding_2,Pyr_redox_2	2003 → 2003.1 → 2003.1.2
9	E	e4kprE3	E:367-493	Pyr_redox_dim	244 → 244.2 → 244.2.1
10	F	e4kprF1	F:171-292	Pyr_redox	2003 → 2003.1 → 2003.1.2
11	F	e4kprF2	F:10-170,F:293-366	FAD_binding_2,Pyr_redox_2	2003 → 2003.1 → 2003.1.2
12	F	e4kprF3	F:367-494	Pyr_redox_dim	244 → 244.2 → 244.2.1

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