#	Chain	Domain ID	Range	Family	Classification
1	A	e3hr4A1	A:511-699	Flavodoxin_1	2007 → 2007.2 → 2007.2.1
2	B	e3hr4B1	B:3-75	EF-hand_1, EF-hand_7	108 → 108.1 → 108.1.1
3	B	e3hr4B2	B:76-147	EF-hand_1, EF-hand_6, EF-hand_7	108 → 108.1 → 108.1.1
4	C	e3hr4C2	C:534-699	Flavodoxin_1	2007 → 2007.2 → 2007.2.1
5	D	e3hr4D1	D:3-75	EF-hand_1, EF-hand_7	108 → 108.1 → 108.1.1
6	D	e3hr4D2	D:76-147	EF-hand_1, EF-hand_6, EF-hand_7	108 → 108.1 → 108.1.1
7	E	e3hr4E2	E:534-699	Flavodoxin_1	2007 → 2007.2 → 2007.2.1
8	F	e3hr4F1	F:3-75	EF-hand_1, EF-hand_7	108 → 108.1 → 108.1.1
9	F	e3hr4F2	F:76-147	EF-hand_1, EF-hand_6, EF-hand_7	108 → 108.1 → 108.1.1
10	G	e3hr4G2	G:534-698	Flavodoxin_1	2007 → 2007.2 → 2007.2.1
11	H	e3hr4H1	H:3-75	EF-hand_1, EF-hand_7	108 → 108.1 → 108.1.1
12	H	e3hr4H2	H:76-147	EF-hand_1, EF-hand_6, EF-hand_7	108 → 108.1 → 108.1.1

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