#	Chain	Domain ID	Range	Family	Classification
1	A	e3sr2A1	A:50-80	101.1.12.0	101 → 101.1 → 101.1.12
2	A	e3sr2A2	A:118-139	XRCC4_CC	3939 → 3939.1 → 3939.1.1
3	A	e3sr2A3	A:1-49,A:81-117	XRCC4	719 → 719.1 → 719.1.1
4	B	e3sr2B1	B:118-140	XRCC4_CC	3939 → 3939.1 → 3939.1.1
5	B	e3sr2B2	B:50-80	101.1.12.0	101 → 101.1 → 101.1.12
6	B	e3sr2B3	B:1-49,B:81-117	XRCC4	719 → 719.1 → 719.1.1
7	C	e3sr2C3	C:127-224	XLF_CC	3939 → 3939.1 → 3939.1.1
8	C	e3sr2C1	C:50-91	101.1.12.0	101 → 101.1 → 101.1.12
9	C	e3sr2C4	C:1-49,C:92-126	XLF	719 → 719.1 → 719.1.1
10	D	e3sr2D1	D:1-44,D:82-115	719.1.1.0	719 → 719.1 → 719.1.1
11	D	e3sr2D2	D:45-81	101.1.12.0	101 → 101.1 → 101.1.12
12	D	e3sr2D3	D:127-224	XLF_CC	3939 → 3939.1 → 3939.1.1
13	E	e3sr2E1	E:118-140	XRCC4_CC	3939 → 3939.1 → 3939.1.1
14	E	e3sr2E2	E:1-49,E:81-117	XRCC4	719 → 719.1 → 719.1.1
15	E	e3sr2E3	E:50-80	101.1.12.0	101 → 101.1 → 101.1.12
16	F	e3sr2F1	F:50-80	101.1.12.0	101 → 101.1 → 101.1.12
17	F	e3sr2F2	F:1-49,F:81-117	XRCC4	719 → 719.1 → 719.1.1
18	F	e3sr2F3	F:118-140	XRCC4_CC	3939 → 3939.1 → 3939.1.1
19	G	e3sr2G2	G:45-79	101.1.12.0	101 → 101.1 → 101.1.12
20	G	e3sr2G3	G:127-224	XLF_CC	3939 → 3939.1 → 3939.1.1
21	G	e3sr2G1	G:1-49,G:92-126	XLF	719 → 719.1 → 719.1.1
22	H	e3sr2H1	H:1-46,H:83-117	719.1.1.0	719 → 719.1 → 719.1.1
23	H	e3sr2H2	H:47-82	101.1.12.0	101 → 101.1 → 101.1.12
24	H	e3sr2H3	H:126-224	XLF_CC	3939 → 3939.1 → 3939.1.1

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