Analysis of interatomic Contacts of Structural Units in PDB entry:
2XCT

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 2XCT entry

There are 2 chains in PDB entry 2XCT (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
B	LYS 417	GLY 1491
D	LYS 417	GLU 1442

There are118 helices in PDB entry 2XCT. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	B	425	428	Right-handed 310
Helix 2	2	B	437	447	Right-handed alpha
Helix 3	3	B	468	474	Right-handed alpha
Helix 4	4	B	475	486	Right-handed alpha
Helix 5	5	B	489	493	Right-handed 310
Helix 6	6	B	510	528	Right-handed alpha
Helix 7	7	B	528	535	Right-handed alpha
Helix 8	8	B	582	586	Right-handed 310
Helix 9	9	B	587	595	Right-handed alpha
Helix 10	10	B	610	623	Right-handed alpha
Helix 11	11	B	625	637	Right-handed alpha
Helix 12	12	B	1014	1032	Right-handed alpha
Helix 13	13	B	1043	1057	Right-handed alpha
Helix 14	14	B	1067	1078	Right-handed alpha
Helix 15	15	B	1082	1093	Right-handed alpha
Helix 16	16	B	1129	1136	Right-handed 310
Helix 17	17	B	1165	1171	Right-handed alpha
Helix 18	18	B	1187	1201	Right-handed alpha
Helix 19	19	B	1205	1209	Right-handed 310
Helix 20	20	B	1226	1232	Right-handed alpha
Helix 21	21	B	1232	1237	Right-handed alpha
Helix 22	22	B	1269	1282	Right-handed alpha
Helix 23	23	B	1313	1325	Right-handed alpha
Helix 24	24	B	1347	1390	Right-handed alpha
Helix 25	25	B	1390	1400	Right-handed alpha
Helix 26	26	B	1403	1414	Right-handed alpha
Helix 27	27	B	1418	1427	Right-handed alpha
Helix 28	28	B	1430	1434	Right-handed 310
Helix 29	29	B	1435	1460	Right-handed alpha
Helix 30	30	B	1463	1481	Right-handed alpha
Helix 31	31	D	425	429	Right-handed 310
Helix 32	32	D	442	447	Right-handed alpha
Helix 33	33	D	468	473	Right-handed alpha
Helix 34	34	D	475	486	Right-handed alpha
Helix 35	35	D	489	493	Right-handed 310
Helix 36	36	D	510	526	Right-handed alpha
Helix 37	37	D	528	535	Right-handed alpha
Helix 38	38	D	588	596	Right-handed alpha
Helix 39	39	D	610	623	Right-handed alpha
Helix 40	40	D	625	636	Right-handed alpha
Helix 41	41	D	1014	1022	Right-handed alpha
Helix 42	42	D	1022	1033	Right-handed alpha
Helix 43	43	D	1043	1056	Right-handed alpha
Helix 44	44	D	1067	1078	Right-handed alpha
Helix 45	45	D	1082	1093	Right-handed alpha
Helix 46	46	D	1120	1123	Right-handed 310
Helix 47	47	D	1129	1137	Right-handed alpha
Helix 48	48	D	1165	1171	Right-handed alpha
Helix 49	49	D	1187	1200	Right-handed alpha
Helix 50	50	D	1205	1210	Right-handed alpha
Helix 51	51	D	1226	1237	Right-handed alpha
Helix 52	52	D	1269	1283	Right-handed alpha
Helix 53	53	D	1313	1325	Right-handed alpha
Helix 54	54	D	1347	1390	Right-handed alpha
Helix 55	55	D	1390	1400	Right-handed alpha
Helix 56	56	D	1403	1416	Right-handed alpha
Helix 57	57	D	1418	1426	Right-handed alpha
Helix 58	58	D	1430	1433	Right-handed 310
Helix 59	59	D	1434	1460	Right-handed alpha
Helix 60	60	D	1461	1480	Right-handed alpha
Helix 61	61	S	437	445	Right-handed alpha
Helix 62	62	S	463	467	Right-handed 310
Helix 63	63	S	468	473	Right-handed alpha
Helix 64	64	S	475	482	Right-handed alpha
Helix 65	65	S	489	493	Right-handed 310
Helix 66	66	S	512	527	Right-handed alpha
Helix 67	67	S	528	534	Right-handed alpha
Helix 68	68	S	588	596	Right-handed alpha
Helix 69	69	S	610	622	Right-handed alpha
Helix 70	70	S	626	636	Right-handed alpha
Helix 71	71	S	1013	1032	Right-handed alpha
Helix 72	72	S	1043	1055	Right-handed alpha
Helix 73	73	S	1067	1077	Right-handed alpha
Helix 74	74	S	1082	1092	Right-handed alpha
Helix 75	75	S	1132	1137	Right-handed alpha
Helix 76	76	S	1165	1171	Right-handed alpha
Helix 77	77	S	1187	1199	Right-handed alpha
Helix 78	78	S	1205	1213	Right-handed alpha
Helix 79	79	S	1227	1236	Right-handed alpha
Helix 80	80	S	1269	1284	Right-handed alpha
Helix 81	81	S	1313	1320	Right-handed alpha
Helix 82	82	S	1347	1390	Right-handed alpha
Helix 83	83	S	1390	1400	Right-handed alpha
Helix 84	84	S	1403	1414	Right-handed alpha
Helix 85	85	S	1418	1428	Right-handed alpha
Helix 86	86	S	1430	1434	Right-handed 310
Helix 87	87	S	1434	1438	Right-handed 310
Helix 88	88	S	1439	1458	Right-handed alpha
Helix 89	89	S	1461	1481	Right-handed alpha
Helix 90	90	U	437	446	Right-handed alpha
Helix 91	91	U	468	473	Right-handed alpha
Helix 92	92	U	475	486	Right-handed alpha
Helix 93	93	U	489	493	Right-handed 310
Helix 94	94	U	494	498	Right-handed 310
Helix 95	95	U	510	528	Right-handed alpha
Helix 96	96	U	528	535	Right-handed alpha
Helix 97	97	U	587	597	Right-handed alpha
Helix 98	98	U	611	621	Right-handed alpha
Helix 99	99	U	625	636	Right-handed alpha
Helix 100	100	U	1015	1032	Right-handed alpha
Helix 101	101	U	1043	1056	Right-handed alpha
Helix 102	102	U	1067	1078	Right-handed alpha
Helix 103	103	U	1082	1091	Right-handed alpha
Helix 104	104	U	1129	1137	Right-handed alpha
Helix 105	105	U	1165	1171	Right-handed alpha
Helix 106	106	U	1187	1199	Right-handed alpha
Helix 107	107	U	1205	1213	Right-handed alpha
Helix 108	108	U	1227	1237	Right-handed alpha
Helix 109	109	U	1269	1283	Right-handed alpha
Helix 110	110	U	1313	1318	Right-handed alpha
Helix 111	111	U	1318	1324	Right-handed alpha
Helix 112	112	U	1347	1390	Right-handed alpha
Helix 113	113	U	1390	1400	Right-handed alpha
Helix 114	114	U	1403	1416	Right-handed alpha
Helix 115	115	U	1418	1427	Right-handed alpha
Helix 116	116	U	1430	1434	Right-handed 310
Helix 117	117	U	1436	1461	Right-handed alpha
Helix 118	118	U	1461	1480	Right-handed alpha

There are 26 sheets in PDB entry 2XCT. Click on sheet of interest to get list of strands forming it: BA, BB, BC, BD, BE, BF, A, DB, C, DD, DE, DF, G, DH, SA, SB, SC, SD, SE, SF, UA, UB, UC, UD, UE, UF,

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	452	456	first strand
Strand 2	B	430	434	parallel
Strand 3	B	502	506	parallel
Strand 4	B	537	540	parallel
Strand 5	B	603	607	anti-parallel
Strand 6	B	1011	1013	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1065	1066	first strand
Strand 2	B	1125	1127	anti-parallel
Strand 3	B	1105	1107	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1146	1148	first strand
Strand 2	B	1155	1157	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1329	1334	first strand
Strand 2	B	1238	1244	anti-parallel
Strand 3	B	1222	1225	anti-parallel
Strand 4	B	1486	1489	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1247	1251	first strand
Strand 2	B	1257	1261	anti-parallel
Strand 3	B	1304	1308	anti-parallel
Strand 4	B	1289	1294	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1336	1339	first strand
Strand 2	B	1342	1345	anti-parallel

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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	D	453	456	first strand
Strand 2	D	431	434	parallel
Strand 3	D	503	506	parallel
Strand 4	D	537	538	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	605	607	first strand
Strand 2	D	1011	1013	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	1065	1066	first strand
Strand 2	D	1125	1126	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	1146	1148	first strand
Strand 2	D	1155	1157	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	1172	1175	first strand
Strand 2	D	1180	1183	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	1328	1331	first strand
Strand 2	D	1241	1244	anti-parallel
Strand 3	D	1223	1225	anti-parallel
Strand 4	D	1487	1489	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	D	1246	1253	first strand
Strand 2	D	1256	1263	anti-parallel
Strand 3	D	1304	1308	anti-parallel
Strand 4	D	1289	1294	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	1336	1339	first strand
Strand 2	D	1342	1345	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	452	455	first strand
Strand 2	S	430	434	parallel
Strand 3	S	502	506	parallel
Strand 4	S	537	539	parallel
Strand 5	S	604	605	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	1065	1066	first strand
Strand 2	S	1125	1127	anti-parallel
Strand 3	S	1105	1106	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	1146	1148	first strand
Strand 2	S	1155	1157	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	1328	1334	first strand
Strand 2	S	1238	1244	anti-parallel
Strand 3	S	1222	1224	anti-parallel
Strand 4	S	1486	1488	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	1250	1253	first strand
Strand 2	S	1256	1261	anti-parallel
Strand 3	S	1304	1308	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	1338	1339	first strand
Strand 2	S	1342	1343	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	452	456	first strand
Strand 2	U	430	434	parallel
Strand 3	U	502	505	parallel
Strand 4	U	537	539	parallel
Strand 5	U	604	605	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	1065	1066	first strand
Strand 2	U	1125	1127	anti-parallel
Strand 3	U	1105	1107	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	1146	1148	first strand
Strand 2	U	1155	1157	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	1172	1175	first strand
Strand 2	U	1180	1183	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	1222	1223	first strand
Strand 2	U	1486	1487	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	U	1246	1250	first strand
Strand 2	U	1258	1263	anti-parallel
Strand 3	U	1304	1308	anti-parallel
Strand 4	U	1289	1294	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: 2XCT

Analysis of interatomic Contacts of Structural Units in PDB entry:
2XCT