Analysis of interatomic Contacts of Structural Units in PDB entry:
3ECQ

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 3ECQ entry

There is 1 chain in PDB entry 3ECQ (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	LYS 119	ALA 1389

There are 61 helices in PDB entry 3ECQ. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	130	134	Right-handed 310
Helix 2	2	A	272	280	Right-handed alpha
Helix 3	3	A	400	403	Right-handed 310
Helix 4	4	A	440	444	Right-handed 310
Helix 5	5	A	521	525	Right-handed 310
Helix 6	6	A	561	565	Right-handed 310
Helix 7	7	A	585	594	Right-handed alpha
Helix 8	8	A	602	607	Right-handed 310
Helix 9	9	A	625	641	Right-handed alpha
Helix 10	10	A	668	671	Right-handed 310
Helix 11	11	A	672	686	Right-handed alpha
Helix 12	12	A	734	741	Right-handed alpha
Helix 13	13	A	742	755	Right-handed alpha
Helix 14	14	A	775	788	Right-handed alpha
Helix 15	15	A	808	813	Right-handed alpha
Helix 16	16	A	826	834	Right-handed alpha
Helix 17	17	A	844	852	Right-handed 310
Helix 18	18	A	866	870	Right-handed 310
Helix 19	19	A	873	891	Right-handed alpha
Helix 20	20	A	942	946	Right-handed 310
Helix 21	21	A	977	980	Right-handed 310
Helix 22	22	A	998	1003	Right-handed alpha
Helix 23	23	A	1077	1079	Right-handed 310
Helix 24	24	A	1163	1167	Right-handed 310
Helix 25	25	A	1270	1274	Right-handed 310
Helix 26	26	A	1345	1349	Right-handed 310
Helix 27	27	A	1396	1404	Right-handed alpha
Helix 28	28	A	1421	1438	Right-handed alpha
Helix 29	29	A	1451	1459	Right-handed alpha
Helix 30	30	A	1465	1476	Right-handed alpha
Helix 31	31	B	130	134	Right-handed 310
Helix 32	32	B	272	280	Right-handed alpha
Helix 33	33	B	400	403	Right-handed 310
Helix 34	34	B	440	444	Right-handed 310
Helix 35	35	B	521	525	Right-handed 310
Helix 36	36	B	561	565	Right-handed 310
Helix 37	37	B	585	594	Right-handed alpha
Helix 38	38	B	602	607	Right-handed 310
Helix 39	39	B	625	641	Right-handed alpha
Helix 40	40	B	668	671	Right-handed 310
Helix 41	41	B	672	686	Right-handed alpha
Helix 42	42	B	708	712	Right-handed 310
Helix 43	43	B	734	741	Right-handed alpha
Helix 44	44	B	742	755	Right-handed alpha
Helix 45	45	B	775	789	Right-handed alpha
Helix 46	46	B	808	813	Right-handed alpha
Helix 47	47	B	826	834	Right-handed alpha
Helix 48	48	B	844	852	Right-handed 310
Helix 49	49	B	872	891	Right-handed alpha
Helix 50	50	B	942	946	Right-handed 310
Helix 51	51	B	977	980	Right-handed 310
Helix 52	52	B	998	1003	Right-handed alpha
Helix 53	53	B	1077	1079	Right-handed 310
Helix 54	54	B	1163	1167	Right-handed 310
Helix 55	55	B	1248	1251	Right-handed 310
Helix 56	56	B	1270	1274	Right-handed 310
Helix 57	57	B	1345	1349	Right-handed 310
Helix 58	58	B	1396	1404	Right-handed alpha
Helix 59	59	B	1421	1438	Right-handed alpha
Helix 60	60	B	1443	1459	Right-handed alpha
Helix 61	61	B	1465	1481	Right-handed alpha

There are 36 sheets in PDB entry 3ECQ. 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,

There are 7 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	125	127	first strand
Strand 2	A	163	167	anti-parallel
Strand 3	A	284	289	anti-parallel
Strand 4	A	195	203	anti-parallel
Strand 5	A	206	213	anti-parallel
Strand 6	A	216	222	anti-parallel
Strand 7	A	228	229	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	136	142	first strand
Strand 2	A	145	151	anti-parallel
Strand 3	A	298	302	anti-parallel
Strand 4	A	178	186	anti-parallel
Strand 5	A	243	250	anti-parallel
Strand 6	A	255	260	anti-parallel
Strand 7	A	263	264	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	136	142	first strand
Strand 2	A	145	151	anti-parallel
Strand 3	A	298	302	anti-parallel
Strand 4	A	178	186	anti-parallel
Strand 5	A	243	250	anti-parallel
Strand 6	A	255	260	anti-parallel
Strand 7	A	269	270	anti-parallel

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There are 4 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	331	335	first strand
Strand 2	A	339	344	anti-parallel
Strand 3	A	350	355	anti-parallel
Strand 4	A	358	361	anti-parallel

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There are 4 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	375	377	first strand
Strand 2	A	370	372	anti-parallel
Strand 3	A	447	449	anti-parallel
Strand 4	A	549	550	anti-parallel

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There are 9 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	380	387	first strand
Strand 2	A	390	399	anti-parallel
Strand 3	A	404	415	anti-parallel
Strand 4	A	418	428	anti-parallel
Strand 5	A	569	575	anti-parallel
Strand 6	A	508	513	anti-parallel
Strand 7	A	499	503	anti-parallel
Strand 8	A	466	470	anti-parallel
Strand 9	A	481	485	anti-parallel

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There are 4 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	456	459	first strand
Strand 2	A	539	546	anti-parallel
Strand 3	A	529	536	anti-parallel
Strand 4	A	494	497	anti-parallel

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There are 2 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	554	555	first strand
Strand 2	A	558	559	anti-parallel

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There are 5 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	609	616	first strand
Strand 2	A	644	650	parallel
Strand 3	A	689	696	parallel
Strand 4	A	760	764	parallel
Strand 5	A	792	795	parallel

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There are 3 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	699	700	first strand
Strand 2	A	729	732	anti-parallel
Strand 3	A	722	725	anti-parallel

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There are 10 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	894	900	first strand
Strand 2	A	918	924	anti-parallel
Strand 3	A	930	935	anti-parallel
Strand 4	A	948	952	anti-parallel
Strand 5	A	955	959	anti-parallel
Strand 6	A	962	967	anti-parallel
Strand 7	A	982	987	anti-parallel
Strand 8	A	1039	1042	anti-parallel
Strand 9	A	1007	1012	anti-parallel
Strand 10	A	1015	1021	anti-parallel

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There are 2 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	904	908	first strand
Strand 2	A	911	915	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	992	996	first strand
Strand 2	A	1028	1032	anti-parallel

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There are 5 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	1073	1075	first strand
Strand 2	A	1102	1107	anti-parallel
Strand 3	A	1192	1197	anti-parallel
Strand 4	A	1131	1136	anti-parallel
Strand 5	A	1141	1146	anti-parallel

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There are 5 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	1081	1085	first strand
Strand 2	A	1091	1095	anti-parallel
Strand 3	A	1204	1213	anti-parallel
Strand 4	A	1116	1125	anti-parallel
Strand 5	A	1176	1183	anti-parallel

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There are 4 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	1230	1232	first strand
Strand 2	A	1407	1418	anti-parallel
Strand 3	A	1284	1289	anti-parallel
Strand 4	A	1257	1261	anti-parallel

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There are 4 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	1230	1232	first strand
Strand 2	A	1407	1418	anti-parallel
Strand 3	A	1313	1322	anti-parallel
Strand 4	A	1365	1372	anti-parallel

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There are 5 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	1244	1246	first strand
Strand 2	A	1296	1301	anti-parallel
Strand 3	A	1379	1385	anti-parallel
Strand 4	A	1328	1334	anti-parallel
Strand 5	A	1350	1353	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	125	127	first strand
Strand 2	B	163	167	anti-parallel
Strand 3	B	284	289	anti-parallel
Strand 4	B	195	203	anti-parallel
Strand 5	B	206	213	anti-parallel
Strand 6	B	216	222	anti-parallel
Strand 7	B	228	229	anti-parallel

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There are 7 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	136	142	first strand
Strand 2	B	145	151	anti-parallel
Strand 3	B	298	302	anti-parallel
Strand 4	B	178	186	anti-parallel
Strand 5	B	243	250	anti-parallel
Strand 6	B	255	260	anti-parallel
Strand 7	B	263	264	anti-parallel

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There are 7 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	136	142	first strand
Strand 2	B	145	151	anti-parallel
Strand 3	B	298	302	anti-parallel
Strand 4	B	178	186	anti-parallel
Strand 5	B	243	250	anti-parallel
Strand 6	B	255	260	anti-parallel
Strand 7	B	269	270	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	B	331	335	first strand
Strand 2	B	339	344	anti-parallel
Strand 3	B	350	355	anti-parallel
Strand 4	B	358	361	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	375	377	first strand
Strand 2	B	370	372	anti-parallel
Strand 3	B	447	449	anti-parallel
Strand 4	B	549	550	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	380	385	first strand
Strand 2	B	390	399	anti-parallel
Strand 3	B	404	415	anti-parallel
Strand 4	B	418	428	anti-parallel
Strand 5	B	569	575	anti-parallel
Strand 6	B	508	513	anti-parallel
Strand 7	B	499	503	anti-parallel
Strand 8	B	466	470	anti-parallel
Strand 9	B	481	485	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	456	459	first strand
Strand 2	B	539	546	anti-parallel
Strand 3	B	529	536	anti-parallel
Strand 4	B	494	497	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	554	555	first strand
Strand 2	B	558	559	anti-parallel

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There are 5 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	609	616	first strand
Strand 2	B	644	650	parallel
Strand 3	B	689	696	parallel
Strand 4	B	760	764	parallel
Strand 5	B	792	795	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	699	700	first strand
Strand 2	B	731	732	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	894	900	first strand
Strand 2	B	918	924	anti-parallel
Strand 3	B	930	935	anti-parallel
Strand 4	B	948	952	anti-parallel
Strand 5	B	955	959	anti-parallel
Strand 6	B	962	967	anti-parallel
Strand 7	B	982	987	anti-parallel
Strand 8	B	1039	1042	anti-parallel
Strand 9	B	1007	1012	anti-parallel
Strand 10	B	1015	1021	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	B	904	908	first strand
Strand 2	B	911	915	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	992	996	first strand
Strand 2	B	1028	1032	anti-parallel

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There are 5 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1073	1075	first strand
Strand 2	B	1102	1107	anti-parallel
Strand 3	B	1192	1197	anti-parallel
Strand 4	B	1131	1136	anti-parallel
Strand 5	B	1141	1146	anti-parallel

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There are 5 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1081	1085	first strand
Strand 2	B	1091	1095	anti-parallel
Strand 3	B	1204	1213	anti-parallel
Strand 4	B	1116	1125	anti-parallel
Strand 5	B	1176	1183	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	B	1230	1232	first strand
Strand 2	B	1407	1418	anti-parallel
Strand 3	B	1284	1289	anti-parallel
Strand 4	B	1257	1261	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1230	1232	first strand
Strand 2	B	1407	1418	anti-parallel
Strand 3	B	1313	1322	anti-parallel
Strand 4	B	1365	1372	anti-parallel

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There are 5 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1244	1246	first strand
Strand 2	B	1296	1301	anti-parallel
Strand 3	B	1379	1385	anti-parallel
Strand 4	B	1328	1334	anti-parallel
Strand 5	B	1350	1353	anti-parallel

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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il

Analysis of interatomic Contacts of Structural Units in PDB entry: 3ECQ

Analysis of interatomic Contacts of Structural Units in PDB entry:
3ECQ