Analysis of interatomic Contacts of Structural Units in PDB entry:
1ITW

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 1ITW entry

There are 4 chains in PDB entry 1ITW (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 2	ALA 741
B	SER 2	ALA 741
C	SER 2	LEU 740
D	SER 2	ALA 741

There are136 helices in PDB entry 1ITW. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	12	32	Right-handed alpha
Helix 2	2	A	43	52	Right-handed alpha
Helix 3	3	A	53	56	Right-handed 310
Helix 4	4	A	64	73	Right-handed alpha
Helix 5	5	A	89	103	Right-handed alpha
Helix 6	6	A	116	130	Right-handed alpha
Helix 7	7	A	134	139	Right-handed alpha
Helix 8	8	A	148	158	Right-handed alpha
Helix 9	9	A	180	185	Right-handed alpha
Helix 10	10	A	228	247	Right-handed alpha
Helix 11	11	A	261	275	Right-handed alpha
Helix 12	12	A	275	282	Right-handed alpha
Helix 13	13	A	282	289	Right-handed alpha
Helix 14	14	A	292	295	Right-handed 310
Helix 15	15	A	296	304	Right-handed alpha
Helix 16	16	A	305	307	Right-handed 310
Helix 17	17	A	308	326	Right-handed alpha
Helix 18	18	A	348	359	Right-handed alpha
Helix 19	19	A	379	397	Right-handed alpha
Helix 20	20	A	417	424	Right-handed 310
Helix 21	21	A	462	481	Right-handed alpha
Helix 22	22	A	492	507	Right-handed alpha
Helix 23	23	A	520	534	Right-handed alpha
Helix 24	24	A	543	560	Right-handed alpha
Helix 25	25	A	586	597	Right-handed alpha
Helix 26	26	A	603	621	Right-handed alpha
Helix 27	27	A	623	643	Right-handed alpha
Helix 28	28	A	655	674	Right-handed alpha
Helix 29	29	A	677	694	Right-handed alpha
Helix 30	30	A	694	704	Right-handed alpha
Helix 31	31	A	719	728	Right-handed alpha
Helix 32	32	A	730	737	Right-handed alpha
Helix 33	33	B	12	31	Right-handed alpha
Helix 34	34	B	43	52	Right-handed alpha
Helix 35	35	B	53	56	Right-handed 310
Helix 36	36	B	64	73	Right-handed alpha
Helix 37	37	B	89	103	Right-handed alpha
Helix 38	38	B	116	128	Right-handed alpha
Helix 39	39	B	134	139	Right-handed alpha
Helix 40	40	B	148	158	Right-handed alpha
Helix 41	41	B	180	185	Right-handed alpha
Helix 42	42	B	228	247	Right-handed alpha
Helix 43	43	B	261	275	Right-handed alpha
Helix 44	44	B	275	282	Right-handed alpha
Helix 45	45	B	282	289	Right-handed alpha
Helix 46	46	B	292	295	Right-handed 310
Helix 47	47	B	296	304	Right-handed alpha
Helix 48	48	B	305	307	Right-handed 310
Helix 49	49	B	308	326	Right-handed alpha
Helix 50	50	B	334	337	Right-handed 310
Helix 51	51	B	348	359	Right-handed alpha
Helix 52	52	B	379	397	Right-handed alpha
Helix 53	53	B	417	424	Right-handed 310
Helix 54	54	B	462	481	Right-handed alpha
Helix 55	55	B	492	506	Right-handed alpha
Helix 56	56	B	507	509	Right-handed 310
Helix 57	57	B	520	534	Right-handed alpha
Helix 58	58	B	543	560	Right-handed alpha
Helix 59	59	B	586	597	Right-handed alpha
Helix 60	60	B	603	622	Right-handed alpha
Helix 61	61	B	623	643	Right-handed alpha
Helix 62	62	B	655	674	Right-handed alpha
Helix 63	63	B	677	694	Right-handed alpha
Helix 64	64	B	694	705	Right-handed alpha
Helix 65	65	B	719	728	Right-handed alpha
Helix 66	66	B	730	738	Right-handed alpha
Helix 67	67	B	739	741	Right-handed 310
Helix 68	68	C	12	31	Right-handed alpha
Helix 69	69	C	32	34	Right-handed 310
Helix 70	70	C	43	52	Right-handed alpha
Helix 71	71	C	53	56	Right-handed 310
Helix 72	72	C	64	73	Right-handed alpha
Helix 73	73	C	89	103	Right-handed alpha
Helix 74	74	C	116	128	Right-handed alpha
Helix 75	75	C	134	139	Right-handed alpha
Helix 76	76	C	148	158	Right-handed alpha
Helix 77	77	C	180	185	Right-handed alpha
Helix 78	78	C	228	247	Right-handed alpha
Helix 79	79	C	261	275	Right-handed alpha
Helix 80	80	C	275	282	Right-handed alpha
Helix 81	81	C	282	289	Right-handed alpha
Helix 82	82	C	292	296	Right-handed 310
Helix 83	83	C	297	304	Right-handed alpha
Helix 84	84	C	305	307	Right-handed 310
Helix 85	85	C	308	326	Right-handed alpha
Helix 86	86	C	348	359	Right-handed alpha
Helix 87	87	C	379	397	Right-handed alpha
Helix 88	88	C	417	424	Right-handed 310
Helix 89	89	C	462	481	Right-handed alpha
Helix 90	90	C	492	506	Right-handed alpha
Helix 91	91	C	507	509	Right-handed 310
Helix 92	92	C	520	534	Right-handed alpha
Helix 93	93	C	543	560	Right-handed alpha
Helix 94	94	C	586	597	Right-handed alpha
Helix 95	95	C	603	621	Right-handed alpha
Helix 96	96	C	623	643	Right-handed alpha
Helix 97	97	C	655	674	Right-handed alpha
Helix 98	98	C	677	694	Right-handed alpha
Helix 99	99	C	694	704	Right-handed alpha
Helix 100	100	C	719	728	Right-handed alpha
Helix 101	101	C	730	738	Right-handed alpha
Helix 102	102	D	12	31	Right-handed alpha
Helix 103	103	D	32	34	Right-handed 310
Helix 104	104	D	43	52	Right-handed alpha
Helix 105	105	D	53	56	Right-handed 310
Helix 106	106	D	64	73	Right-handed alpha
Helix 107	107	D	89	103	Right-handed alpha
Helix 108	108	D	116	128	Right-handed alpha
Helix 109	109	D	134	139	Right-handed alpha
Helix 110	110	D	148	158	Right-handed alpha
Helix 111	111	D	180	185	Right-handed alpha
Helix 112	112	D	228	247	Right-handed alpha
Helix 113	113	D	261	275	Right-handed alpha
Helix 114	114	D	275	282	Right-handed alpha
Helix 115	115	D	282	289	Right-handed alpha
Helix 116	116	D	292	296	Right-handed 310
Helix 117	117	D	297	304	Right-handed alpha
Helix 118	118	D	305	307	Right-handed 310
Helix 119	119	D	308	326	Right-handed alpha
Helix 120	120	D	348	359	Right-handed alpha
Helix 121	121	D	379	397	Right-handed alpha
Helix 122	122	D	417	424	Right-handed 310
Helix 123	123	D	462	481	Right-handed alpha
Helix 124	124	D	492	506	Right-handed alpha
Helix 125	125	D	507	509	Right-handed 310
Helix 126	126	D	520	534	Right-handed alpha
Helix 127	127	D	543	560	Right-handed alpha
Helix 128	128	D	586	597	Right-handed alpha
Helix 129	129	D	603	622	Right-handed alpha
Helix 130	130	D	623	643	Right-handed alpha
Helix 131	131	D	655	674	Right-handed alpha
Helix 132	132	D	677	694	Right-handed alpha
Helix 133	133	D	694	704	Right-handed alpha
Helix 134	134	D	719	728	Right-handed alpha
Helix 135	135	D	730	738	Right-handed alpha
Helix 136	136	D	739	741	Right-handed 310

There are 24 sheets in PDB entry 1ITW. 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,

There are 10 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	36	41	first strand
Strand 2	A	5	10	parallel
Strand 3	A	79	82	parallel
Strand 4	A	576	579	parallel
Strand 5	A	566	570	anti-parallel
Strand 6	A	143	146	anti-parallel
Strand 7	A	409	411	anti-parallel
Strand 8	A	539	542	parallel
Strand 9	A	484	487	parallel
Strand 10	A	516	519	parallel

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There are 3 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	249	252	first strand
Strand 2	A	370	376	parallel
Strand 3	A	172	174	parallel

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There are 3 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	249	252	first strand
Strand 2	A	370	376	parallel
Strand 3	A	362	364	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	186	189	first strand
Strand 2	A	221	227	anti-parallel
Strand 3	A	455	461	anti-parallel
Strand 4	A	426	428	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	207	216	first strand
Strand 2	A	194	202	anti-parallel
Strand 3	A	433	439	anti-parallel
Strand 4	A	444	450	anti-parallel

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There are 2 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	331	333	first strand
Strand 2	A	338	339	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	36	41	first strand
Strand 2	B	5	10	parallel
Strand 3	B	79	82	parallel
Strand 4	B	576	579	parallel
Strand 5	B	566	570	anti-parallel
Strand 6	B	143	146	anti-parallel
Strand 7	B	409	411	anti-parallel
Strand 8	B	539	542	parallel
Strand 9	B	484	487	parallel
Strand 10	B	516	519	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	249	252	first strand
Strand 2	B	370	376	parallel
Strand 3	B	172	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	249	252	first strand
Strand 2	B	370	376	parallel
Strand 3	B	362	364	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	186	189	first strand
Strand 2	B	221	227	anti-parallel
Strand 3	B	455	461	anti-parallel
Strand 4	B	426	428	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	207	216	first strand
Strand 2	B	194	202	anti-parallel
Strand 3	B	433	439	anti-parallel
Strand 4	B	444	450	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	B	331	333	first strand
Strand 2	B	338	339	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	36	41	first strand
Strand 2	C	5	10	parallel
Strand 3	C	79	82	parallel
Strand 4	C	576	579	parallel
Strand 5	C	566	570	anti-parallel
Strand 6	C	143	146	anti-parallel
Strand 7	C	409	411	anti-parallel
Strand 8	C	539	542	parallel
Strand 9	C	484	487	parallel
Strand 10	C	516	519	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	249	252	first strand
Strand 2	C	370	376	parallel
Strand 3	C	172	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	249	252	first strand
Strand 2	C	370	376	parallel
Strand 3	C	362	364	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	C	186	189	first strand
Strand 2	C	221	227	anti-parallel
Strand 3	C	455	461	anti-parallel
Strand 4	C	426	428	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	C	207	216	first strand
Strand 2	C	194	202	anti-parallel
Strand 3	C	433	438	anti-parallel
Strand 4	C	444	450	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	C	331	333	first strand
Strand 2	C	338	339	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	36	41	first strand
Strand 2	D	5	10	parallel
Strand 3	D	79	82	parallel
Strand 4	D	576	579	parallel
Strand 5	D	566	570	anti-parallel
Strand 6	D	143	146	anti-parallel
Strand 7	D	409	411	anti-parallel
Strand 8	D	539	542	parallel
Strand 9	D	484	487	parallel
Strand 10	D	516	519	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	249	252	first strand
Strand 2	D	370	376	parallel
Strand 3	D	172	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	249	252	first strand
Strand 2	D	370	376	parallel
Strand 3	D	362	364	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	D	186	189	first strand
Strand 2	D	221	227	anti-parallel
Strand 3	D	455	461	anti-parallel
Strand 4	D	426	428	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	D	207	216	first strand
Strand 2	D	194	202	anti-parallel
Strand 3	D	433	439	anti-parallel
Strand 4	D	444	450	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	331	333	first strand
Strand 2	D	338	339	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: 1ITW

Analysis of interatomic Contacts of Structural Units in PDB entry:
1ITW