#	Chain	Domain ID	Range	Family	Classification
1	1	e4rku11	1:46-227	Chloroa_b-bind	5077 → 5077.1 → 5077.1.1
2	2	e4rku21	2:63-179,2:217-263	Chloroa_b-bind	5077 → 5077.1 → 5077.1.1
3	3	e4rku31	3:86-130,3:148-265	Chloroa_b-bind	5077 → 5077.1 → 5077.1.1
4	4	e4rku41	4:54-250	Chloroa_b-bind	5077 → 5077.1 → 5077.1.1
5	A	e4rkuA1	A:38-427	PsaA_PsaB	5075 → 5075.1 → 5075.1.1
6	A	e4rkuA2	A:428-758	PsaA_PsaB	5037 → 5037.1 → 5037.1.1
7	B	e4rkuB1	B:405-733	PsaA_PsaB	5037 → 5037.1 → 5037.1.1
8	B	e4rkuB2	B:3-404	PsaA_PsaB	5075 → 5075.1 → 5075.1.1
9	C	e4rkuC1	C:2-81	Fer4, Fer4_21	205 → 205.1 → 205.1.1
10	D	e4rkuD1	D:71-207	PsaD	834 → 834.1 → 834.1.1
11	E	e4rkuE1	E:65-127	PSI_PsaE	4 → 4.1 → 4.1.1
12	F	e4rkuF1	F:80-231	PSI_PsaF	5019 → 5019.1 → 5019.1.1
13	G	e4rkuG1	G:60-143	PSI_PSAK	5063 → 5063.1 → 5063.1.1
14	H	e4rkuH1	H:57-138	PSI_PsaH	6037 → 6037.1 → 6037.1.1
15	I	e4rkuI1	I:5-30	PSI_8	5020 → 5020.1 → 5020.1.1
16	J	e4rkuJ1	J:2-41	PSI_PsaJ	5021 → 5021.1 → 5021.1.1
17	K	e4rkuK1	K:47-118	PSI_PSAK	5063 → 5063.1 → 5063.1.1
18	L	e4rkuL1	L:49-211	PsaL	5064 → 5064.1 → 5064.1.1
19	N	e4rkuN1	N:86-170	PsaN	6036 → 6036.1 → 6036.1.1

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