Analysis of interatomic Contacts of Structural Units in PDB entry:
4IGL

Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
This page provides analyses of contacts formed by:

chains
helices
sheets
residues

For analysis of ligand-protein contacts, use:

LPC software

3D structure can be seen in additional window with STING software for 4IGL entry

There are 4 chains in PDB entry 4IGL (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLU 6	ASN 1484
B	GLN 4	MET 690
C	MET 7	ASN 1484
D	GLN 4	MET 690

There are 75 helices in PDB entry 4IGL. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	154	158	Right-handed 310
Helix 2	2	A	177	179	Right-handed 310
Helix 3	3	A	220	227	Right-handed alpha
Helix 4	4	A	250	254	Right-handed 310
Helix 5	5	A	259	261	Right-handed 310
Helix 6	6	A	321	326	Right-handed alpha
Helix 7	7	A	382	386	Right-handed 310
Helix 8	8	A	393	396	Right-handed 310
Helix 9	9	A	499	501	Right-handed 310
Helix 10	10	A	509	517	Right-handed alpha
Helix 11	11	A	615	617	Right-handed 310
Helix 12	12	A	726	740	Right-handed alpha
Helix 13	13	A	823	828	Right-handed alpha
Helix 14	14	A	829	834	Right-handed 310
Helix 15	15	A	867	877	Right-handed alpha
Helix 16	16	A	893	898	Right-handed 310
Helix 17	17	A	983	988	Right-handed alpha
Helix 18	18	A	989	993	Right-handed 310
Helix 19	19	A	1032	1034	Right-handed 310
Helix 20	20	A	1040	1046	Right-handed alpha
Helix 21	21	A	1092	1098	Right-handed 310
Helix 22	22	A	1102	1113	Right-handed alpha
Helix 23	23	A	1142	1146	Right-handed 310
Helix 24	24	A	1244	1250	Right-handed alpha
Helix 25	25	A	1273	1282	Right-handed alpha
Helix 26	26	A	1285	1294	Right-handed alpha
Helix 27	27	A	1304	1316	Right-handed alpha
Helix 28	28	A	1318	1328	Right-handed alpha
Helix 29	29	A	1432	1440	Right-handed alpha
Helix 30	30	A	1477	1483	Right-handed alpha
Helix 31	31	B	57	62	Right-handed alpha
Helix 32	32	B	159	165	Right-handed alpha
Helix 33	33	B	216	222	Right-handed alpha
Helix 34	34	B	456	464	Right-handed 310
Helix 35	35	B	624	630	Right-handed 310
Helix 36	36	B	633	637	Right-handed 310
Helix 37	37	B	666	670	Right-handed 310
Helix 38	38	B	676	680	Right-handed 310
Helix 39	39	C	177	179	Right-handed 310
Helix 40	40	C	220	227	Right-handed alpha
Helix 41	41	C	250	254	Right-handed 310
Helix 42	42	C	259	261	Right-handed 310
Helix 43	43	C	321	326	Right-handed alpha
Helix 44	44	C	393	396	Right-handed 310
Helix 45	45	C	499	501	Right-handed 310
Helix 46	46	C	509	517	Right-handed alpha
Helix 47	47	C	615	617	Right-handed 310
Helix 48	48	C	726	740	Right-handed alpha
Helix 49	49	C	823	828	Right-handed alpha
Helix 50	50	C	829	834	Right-handed 310
Helix 51	51	C	867	877	Right-handed alpha
Helix 52	52	C	893	898	Right-handed 310
Helix 53	53	C	983	988	Right-handed alpha
Helix 54	54	C	989	994	Right-handed 310
Helix 55	55	C	1030	1034	Right-handed 310
Helix 56	56	C	1040	1046	Right-handed alpha
Helix 57	57	C	1092	1098	Right-handed 310
Helix 58	58	C	1102	1113	Right-handed alpha
Helix 59	59	C	1142	1146	Right-handed 310
Helix 60	60	C	1244	1250	Right-handed alpha
Helix 61	61	C	1273	1282	Right-handed alpha
Helix 62	62	C	1285	1294	Right-handed alpha
Helix 63	63	C	1304	1316	Right-handed alpha
Helix 64	64	C	1318	1328	Right-handed alpha
Helix 65	65	C	1432	1440	Right-handed alpha
Helix 66	66	C	1477	1482	Right-handed alpha
Helix 67	67	D	57	62	Right-handed alpha
Helix 68	68	D	159	165	Right-handed alpha
Helix 69	69	D	216	222	Right-handed alpha
Helix 70	70	D	428	432	Right-handed 310
Helix 71	71	D	456	464	Right-handed 310
Helix 72	72	D	626	630	Right-handed 310
Helix 73	73	D	633	637	Right-handed 310
Helix 74	74	D	666	670	Right-handed 310
Helix 75	75	D	676	680	Right-handed 310

There are 41 sheets in PDB entry 4IGL. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO,

There are 4 strands in A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	27	28	first strand
Strand 2	A	38	42	anti-parallel
Strand 3	A	56	61	anti-parallel
Strand 4	A	72	73	anti-parallel

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There are 7 strands in B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	78	80	first strand
Strand 2	A	191	200	anti-parallel
Strand 3	A	171	174	anti-parallel
Strand 4	A	161	165	anti-parallel
Strand 5	A	146	152	anti-parallel
Strand 6	A	125	138	anti-parallel
Strand 7	A	116	122	anti-parallel

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There are 7 strands in C sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	104	106	first strand
Strand 2	A	125	138	anti-parallel
Strand 3	A	146	152	anti-parallel
Strand 4	A	161	165	anti-parallel
Strand 5	A	171	174	anti-parallel
Strand 6	A	191	200	anti-parallel
Strand 7	A	181	183	anti-parallel

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There are 19 strands in D sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	181	183	first strand
Strand 2	A	191	200	anti-parallel
Strand 3	A	206	213	anti-parallel
Strand 4	A	234	243	anti-parallel
Strand 5	A	263	270	anti-parallel
Strand 6	A	315	320	anti-parallel
Strand 7	A	336	346	anti-parallel
Strand 8	A	353	362	anti-parallel
Strand 9	A	374	378	anti-parallel
Strand 10	A	708	713	anti-parallel
Strand 11	A	717	726	anti-parallel
Strand 12	A	753	762	anti-parallel
Strand 13	A	768	781	anti-parallel
Strand 14	A	786	800	anti-parallel
Strand 15	A	813	819	anti-parallel
Strand 16	A	883	889	anti-parallel
Strand 17	A	901	912	anti-parallel
Strand 18	A	921	933	anti-parallel
Strand 19	A	140	141	parallel

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There are 9 strands in E sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	78	80	first strand
Strand 2	A	191	200	anti-parallel
Strand 3	A	206	213	anti-parallel
Strand 4	A	234	243	anti-parallel
Strand 5	A	263	270	anti-parallel
Strand 6	A	315	320	anti-parallel
Strand 7	A	336	346	anti-parallel
Strand 8	A	353	362	anti-parallel
Strand 9	A	368	370	anti-parallel

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There are 12 strands in F sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	860	863	first strand
Strand 2	A	848	853	anti-parallel
Strand 3	A	901	912	parallel
Strand 4	A	921	933	anti-parallel
Strand 5	A	942	951	anti-parallel
Strand 6	A	957	964	anti-parallel
Strand 7	A	996	1008	anti-parallel
Strand 8	A	1016	1029	anti-parallel
Strand 9	A	1058	1067	anti-parallel
Strand 10	A	1081	1089	anti-parallel
Strand 11	A	1130	1135	anti-parallel
Strand 12	A	1116	1118	anti-parallel

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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	298	300	first strand
Strand 2	A	307	309	anti-parallel

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There are 4 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	389	391	first strand
Strand 2	A	695	698	anti-parallel
Strand 3	A	683	687	anti-parallel
Strand 4	A	670	674	anti-parallel

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There are 4 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	404	407	first strand
Strand 2	A	416	420	anti-parallel
Strand 3	A	427	429	anti-parallel
Strand 4	A	448	449	anti-parallel

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There are 2 strands in J sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	431	433	first strand
Strand 2	A	442	444	anti-parallel

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There are 3 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	460	463	first strand
Strand 2	A	473	477	anti-parallel
Strand 3	A	493	497	anti-parallel

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There are 6 strands in L sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	522	527	first strand
Strand 2	A	530	534	anti-parallel
Strand 3	A	565	569	anti-parallel
Strand 4	A	578	582	anti-parallel
Strand 5	A	587	590	anti-parallel
Strand 6	A	602	603	anti-parallel

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There are 2 strands in M sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	592	594	first strand
Strand 2	A	597	598	anti-parallel

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There are 4 strands in N sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	619	622	first strand
Strand 2	A	631	635	anti-parallel
Strand 3	A	639	643	anti-parallel
Strand 4	A	655	659	anti-parallel

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There are 2 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	645	646	first strand
Strand 2	A	650	651	anti-parallel

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There are 9 strands in P sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1137	1140	first strand
Strand 2	A	1149	1153	anti-parallel
Strand 3	A	1162	1165	anti-parallel
Strand 4	A	1172	1176	anti-parallel
Strand 5	A	1182	1187	anti-parallel
Strand 6	A	1194	1198	anti-parallel
Strand 7	A	1204	1209	anti-parallel
Strand 8	A	1215	1224	anti-parallel
Strand 9	A	1227	1230	anti-parallel

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There are 14 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1137	1140	first strand
Strand 2	A	1149	1153	anti-parallel
Strand 3	A	1162	1165	anti-parallel
Strand 4	A	1172	1176	anti-parallel
Strand 5	A	1182	1187	anti-parallel
Strand 6	A	1194	1198	anti-parallel
Strand 7	A	1204	1209	anti-parallel
Strand 8	A	1215	1224	anti-parallel
Strand 9	A	1259	1264	anti-parallel
Strand 10	A	1334	1340	anti-parallel
Strand 11	A	1351	1358	anti-parallel
Strand 12	A	1365	1370	anti-parallel
Strand 13	A	1402	1405	anti-parallel
Strand 14	A	1423	1425	anti-parallel

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There are 2 strands in R sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1374	1377	first strand
Strand 2	A	1395	1398	anti-parallel

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There are 36 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1408	1410	first strand
Strand 2	A	1416	1420	anti-parallel
Strand 3	A	1442	1447	anti-parallel
Strand 4	A	1453	1457	anti-parallel
Strand 5	A	1464	1468	anti-parallel
Strand 6	A	1472	1476	anti-parallel
Strand 7	B	11	15	anti-parallel
Strand 8	B	21	28	anti-parallel
Strand 9	B	38	46	anti-parallel
Strand 10	B	52	56	anti-parallel
Strand 11	B	68	72	anti-parallel
Strand 12	B	78	83	anti-parallel
Strand 13	B	87	93	anti-parallel
Strand 14	B	99	106	anti-parallel
Strand 15	B	120	126	anti-parallel
Strand 16	B	135	142	anti-parallel
Strand 17	B	148	155	anti-parallel
Strand 18	B	171	175	anti-parallel
Strand 19	B	179	186	anti-parallel
Strand 20	B	192	199	anti-parallel
Strand 21	B	229	235	anti-parallel
Strand 22	B	241	245	anti-parallel
Strand 23	B	251	256	anti-parallel
Strand 24	B	262	268	anti-parallel
Strand 25	B	275	283	anti-parallel
Strand 26	B	289	294	anti-parallel
Strand 27	B	299	304	anti-parallel
Strand 28	B	311	318	anti-parallel
Strand 29	B	327	336	anti-parallel
Strand 30	B	342	347	anti-parallel
Strand 31	B	363	368	anti-parallel
Strand 32	B	374	381	anti-parallel
Strand 33	B	407	415	anti-parallel
Strand 34	B	421	427	anti-parallel
Strand 35	B	435	441	anti-parallel
Strand 36	B	448	450	anti-parallel

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There are 12 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	478	481	first strand
Strand 2	B	487	493	anti-parallel
Strand 3	B	501	507	anti-parallel
Strand 4	B	513	520	anti-parallel
Strand 5	B	527	534	anti-parallel
Strand 6	B	537	543	anti-parallel
Strand 7	B	550	557	anti-parallel
Strand 8	B	565	572	anti-parallel
Strand 9	B	582	587	anti-parallel
Strand 10	B	596	598	anti-parallel
Strand 11	B	604	610	anti-parallel
Strand 12	B	616	621	anti-parallel

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There are 4 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	638	639	first strand
Strand 2	B	645	646	anti-parallel
Strand 3	B	651	653	anti-parallel
Strand 4	B	658	659	anti-parallel

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There are 4 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	27	28	first strand
Strand 2	C	38	42	anti-parallel
Strand 3	C	56	61	anti-parallel
Strand 4	C	72	73	anti-parallel

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There are 7 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	181	183	first strand
Strand 2	C	191	200	anti-parallel
Strand 3	C	171	174	anti-parallel
Strand 4	C	161	165	anti-parallel
Strand 5	C	146	152	anti-parallel
Strand 6	C	125	138	anti-parallel
Strand 7	C	116	122	anti-parallel

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There are 23 strands in X sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	104	106	first strand
Strand 2	C	125	138	anti-parallel
Strand 3	C	146	152	anti-parallel
Strand 4	C	161	165	anti-parallel
Strand 5	C	171	174	anti-parallel
Strand 6	C	191	200	anti-parallel
Strand 7	C	206	213	anti-parallel
Strand 8	C	234	243	anti-parallel
Strand 9	C	263	270	anti-parallel
Strand 10	C	315	320	anti-parallel
Strand 11	C	336	346	anti-parallel
Strand 12	C	353	362	anti-parallel
Strand 13	C	374	378	anti-parallel
Strand 14	C	708	713	anti-parallel
Strand 15	C	717	726	anti-parallel
Strand 16	C	753	762	anti-parallel
Strand 17	C	768	781	anti-parallel
Strand 18	C	786	800	anti-parallel
Strand 19	C	813	819	anti-parallel
Strand 20	C	883	889	anti-parallel
Strand 21	C	901	912	anti-parallel
Strand 22	C	921	933	anti-parallel
Strand 23	C	140	141	parallel

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There are 10 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	96	97	first strand
Strand 2	C	78	82	anti-parallel
Strand 3	C	191	200	anti-parallel
Strand 4	C	206	213	anti-parallel
Strand 5	C	234	243	anti-parallel
Strand 6	C	263	270	anti-parallel
Strand 7	C	315	320	anti-parallel
Strand 8	C	336	346	anti-parallel
Strand 9	C	353	362	anti-parallel
Strand 10	C	368	370	anti-parallel

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There are 12 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	860	863	first strand
Strand 2	C	848	853	anti-parallel
Strand 3	C	901	912	parallel
Strand 4	C	921	933	anti-parallel
Strand 5	C	942	951	anti-parallel
Strand 6	C	957	964	anti-parallel
Strand 7	C	996	1008	anti-parallel
Strand 8	C	1016	1029	anti-parallel
Strand 9	C	1058	1067	anti-parallel
Strand 10	C	1081	1089	anti-parallel
Strand 11	C	1130	1135	anti-parallel
Strand 12	C	1116	1118	anti-parallel

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There are 2 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	298	300	first strand
Strand 2	C	307	309	anti-parallel

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There are 4 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	390	391	first strand
Strand 2	C	695	698	anti-parallel
Strand 3	C	683	687	anti-parallel
Strand 4	C	670	674	anti-parallel

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There are 4 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	404	407	first strand
Strand 2	C	416	422	anti-parallel
Strand 3	C	425	429	anti-parallel
Strand 4	C	448	449	anti-parallel

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There are 2 strands in AD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	431	433	first strand
Strand 2	C	442	444	anti-parallel

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There are 3 strands in AE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	461	463	first strand
Strand 2	C	473	476	anti-parallel
Strand 3	C	494	497	anti-parallel

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There are 6 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	522	527	first strand
Strand 2	C	530	534	anti-parallel
Strand 3	C	565	569	anti-parallel
Strand 4	C	578	582	anti-parallel
Strand 5	C	587	590	anti-parallel
Strand 6	C	602	603	anti-parallel

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There are 2 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	592	594	first strand
Strand 2	C	597	598	anti-parallel

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There are 4 strands in AH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	619	622	first strand
Strand 2	C	631	635	anti-parallel
Strand 3	C	639	643	anti-parallel
Strand 4	C	655	659	anti-parallel

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There are 2 strands in AI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	645	646	first strand
Strand 2	C	650	651	anti-parallel

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There are 9 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	1137	1140	first strand
Strand 2	C	1149	1153	anti-parallel
Strand 3	C	1162	1165	anti-parallel
Strand 4	C	1172	1176	anti-parallel
Strand 5	C	1182	1187	anti-parallel
Strand 6	C	1194	1198	anti-parallel
Strand 7	C	1204	1209	anti-parallel
Strand 8	C	1215	1224	anti-parallel
Strand 9	C	1227	1230	anti-parallel

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There are 14 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	1137	1140	first strand
Strand 2	C	1149	1153	anti-parallel
Strand 3	C	1162	1165	anti-parallel
Strand 4	C	1172	1176	anti-parallel
Strand 5	C	1182	1187	anti-parallel
Strand 6	C	1194	1198	anti-parallel
Strand 7	C	1204	1209	anti-parallel
Strand 8	C	1215	1224	anti-parallel
Strand 9	C	1259	1264	anti-parallel
Strand 10	C	1334	1340	anti-parallel
Strand 11	C	1351	1358	anti-parallel
Strand 12	C	1365	1370	anti-parallel
Strand 13	C	1402	1405	anti-parallel
Strand 14	C	1423	1425	anti-parallel

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There are 2 strands in AL sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	1374	1377	first strand
Strand 2	C	1395	1398	anti-parallel

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There are 36 strands in AM sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	1408	1410	first strand
Strand 2	C	1416	1420	anti-parallel
Strand 3	C	1442	1447	anti-parallel
Strand 4	C	1453	1457	anti-parallel
Strand 5	C	1464	1468	anti-parallel
Strand 6	C	1472	1476	anti-parallel
Strand 7	D	11	15	anti-parallel
Strand 8	D	21	28	anti-parallel
Strand 9	D	38	46	anti-parallel
Strand 10	D	52	56	anti-parallel
Strand 11	D	68	72	anti-parallel
Strand 12	D	78	83	anti-parallel
Strand 13	D	87	93	anti-parallel
Strand 14	D	99	106	anti-parallel
Strand 15	D	120	126	anti-parallel
Strand 16	D	135	142	anti-parallel
Strand 17	D	148	155	anti-parallel
Strand 18	D	171	175	anti-parallel
Strand 19	D	179	186	anti-parallel
Strand 20	D	192	200	anti-parallel
Strand 21	D	224	235	anti-parallel
Strand 22	D	241	245	anti-parallel
Strand 23	D	251	256	anti-parallel
Strand 24	D	262	268	anti-parallel
Strand 25	D	275	283	anti-parallel
Strand 26	D	289	294	anti-parallel
Strand 27	D	299	304	anti-parallel
Strand 28	D	311	318	anti-parallel
Strand 29	D	327	336	anti-parallel
Strand 30	D	342	347	anti-parallel
Strand 31	D	363	368	anti-parallel
Strand 32	D	374	382	anti-parallel
Strand 33	D	406	415	anti-parallel
Strand 34	D	421	427	anti-parallel
Strand 35	D	435	441	anti-parallel
Strand 36	D	448	450	anti-parallel

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There are 12 strands in AN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	478	481	first strand
Strand 2	D	487	493	anti-parallel
Strand 3	D	501	507	anti-parallel
Strand 4	D	513	520	anti-parallel
Strand 5	D	527	534	anti-parallel
Strand 6	D	537	543	anti-parallel
Strand 7	D	550	557	anti-parallel
Strand 8	D	565	572	anti-parallel
Strand 9	D	582	587	anti-parallel
Strand 10	D	596	598	anti-parallel
Strand 11	D	604	610	anti-parallel
Strand 12	D	616	621	anti-parallel

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There are 3 strands in AO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	638	639	first strand
Strand 2	D	645	646	anti-parallel
Strand 3	D	651	652	anti-parallel

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Analysis of interatomic Contacts of Structural Units in PDB entry: 4IGL

Analysis of interatomic Contacts of Structural Units in PDB entry:
4IGL