Analysis of interatomic Contacts of Structural Units in PDB entry:
4I3T

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 4I3T entry

There are 8 chains in PDB entry 4I3T (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ARG 11	TRP 484
B	ARG 11	TRP 484
C	ARG 11	TRP 484
D	ARG 11	TRP 484
E	ARG 11	TRP 484
F	ARG 11	TRP 484
G	ARG 11	TRP 484
H	ARG 11	TRP 484

There are141 helices in PDB entry 4I3T. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	46	60	Right-handed alpha
Helix 2	2	A	65	83	Right-handed alpha
Helix 3	3	A	83	96	Right-handed alpha
Helix 4	4	A	98	120	Right-handed alpha
Helix 5	5	A	161	174	Right-handed alpha
Helix 6	6	A	187	200	Right-handed alpha
Helix 7	7	A	203	205	Right-handed 310
Helix 8	8	A	213	224	Right-handed alpha
Helix 9	9	A	235	246	Right-handed alpha
Helix 10	10	A	268	285	Right-handed alpha
Helix 11	11	A	286	289	Right-handed 310
Helix 12	12	A	301	317	Right-handed alpha
Helix 13	13	A	335	352	Right-handed alpha
Helix 14	14	A	379	384	Right-handed alpha
Helix 15	15	A	399	408	Right-handed alpha
Helix 16	16	A	422	433	Right-handed alpha
Helix 17	17	A	466	474	Right-handed alpha
Helix 18	18	B	46	60	Right-handed alpha
Helix 19	19	B	65	83	Right-handed alpha
Helix 20	20	B	83	96	Right-handed alpha
Helix 21	21	B	98	120	Right-handed alpha
Helix 22	22	B	161	174	Right-handed alpha
Helix 23	23	B	187	200	Right-handed alpha
Helix 24	24	B	203	205	Right-handed 310
Helix 25	25	B	213	224	Right-handed alpha
Helix 26	26	B	235	246	Right-handed alpha
Helix 27	27	B	268	285	Right-handed alpha
Helix 28	28	B	286	289	Right-handed 310
Helix 29	29	B	301	318	Right-handed alpha
Helix 30	30	B	335	352	Right-handed alpha
Helix 31	31	B	379	384	Right-handed alpha
Helix 32	32	B	399	408	Right-handed alpha
Helix 33	33	B	422	433	Right-handed alpha
Helix 34	34	B	466	474	Right-handed alpha
Helix 35	35	C	46	60	Right-handed alpha
Helix 36	36	C	65	83	Right-handed alpha
Helix 37	37	C	83	96	Right-handed alpha
Helix 38	38	C	98	120	Right-handed alpha
Helix 39	39	C	161	174	Right-handed alpha
Helix 40	40	C	187	200	Right-handed alpha
Helix 41	41	C	203	205	Right-handed 310
Helix 42	42	C	213	224	Right-handed alpha
Helix 43	43	C	235	246	Right-handed alpha
Helix 44	44	C	268	285	Right-handed alpha
Helix 45	45	C	286	289	Right-handed 310
Helix 46	46	C	301	318	Right-handed alpha
Helix 47	47	C	335	352	Right-handed alpha
Helix 48	48	C	379	384	Right-handed alpha
Helix 49	49	C	399	408	Right-handed alpha
Helix 50	50	C	422	433	Right-handed alpha
Helix 51	51	C	466	474	Right-handed alpha
Helix 52	52	D	46	60	Right-handed alpha
Helix 53	53	D	65	83	Right-handed alpha
Helix 54	54	D	83	96	Right-handed alpha
Helix 55	55	D	98	120	Right-handed alpha
Helix 56	56	D	161	174	Right-handed alpha
Helix 57	57	D	187	200	Right-handed alpha
Helix 58	58	D	203	205	Right-handed 310
Helix 59	59	D	213	218	Right-handed alpha
Helix 60	60	D	219	224	Right-handed alpha
Helix 61	61	D	235	246	Right-handed alpha
Helix 62	62	D	268	285	Right-handed alpha
Helix 63	63	D	286	289	Right-handed 310
Helix 64	64	D	301	318	Right-handed alpha
Helix 65	65	D	335	352	Right-handed alpha
Helix 66	66	D	379	384	Right-handed alpha
Helix 67	67	D	399	408	Right-handed alpha
Helix 68	68	D	422	433	Right-handed alpha
Helix 69	69	D	466	474	Right-handed alpha
Helix 70	70	E	46	60	Right-handed alpha
Helix 71	71	E	65	83	Right-handed alpha
Helix 72	72	E	83	96	Right-handed alpha
Helix 73	73	E	98	120	Right-handed alpha
Helix 74	74	E	161	174	Right-handed alpha
Helix 75	75	E	187	200	Right-handed alpha
Helix 76	76	E	203	205	Right-handed 310
Helix 77	77	E	213	218	Right-handed alpha
Helix 78	78	E	219	224	Right-handed alpha
Helix 79	79	E	235	246	Right-handed alpha
Helix 80	80	E	268	285	Right-handed alpha
Helix 81	81	E	286	289	Right-handed 310
Helix 82	82	E	301	318	Right-handed alpha
Helix 83	83	E	335	352	Right-handed alpha
Helix 84	84	E	379	384	Right-handed alpha
Helix 85	85	E	399	408	Right-handed alpha
Helix 86	86	E	422	433	Right-handed alpha
Helix 87	87	E	466	474	Right-handed alpha
Helix 88	88	F	46	60	Right-handed alpha
Helix 89	89	F	65	83	Right-handed alpha
Helix 90	90	F	83	96	Right-handed alpha
Helix 91	91	F	98	120	Right-handed alpha
Helix 92	92	F	161	174	Right-handed alpha
Helix 93	93	F	187	200	Right-handed alpha
Helix 94	94	F	203	205	Right-handed 310
Helix 95	95	F	213	218	Right-handed alpha
Helix 96	96	F	219	224	Right-handed alpha
Helix 97	97	F	235	246	Right-handed alpha
Helix 98	98	F	268	285	Right-handed alpha
Helix 99	99	F	286	289	Right-handed 310
Helix 100	100	F	301	318	Right-handed alpha
Helix 101	101	F	335	352	Right-handed alpha
Helix 102	102	F	379	384	Right-handed alpha
Helix 103	103	F	399	408	Right-handed alpha
Helix 104	104	F	422	433	Right-handed alpha
Helix 105	105	F	466	474	Right-handed alpha
Helix 106	106	G	46	60	Right-handed alpha
Helix 107	107	G	65	83	Right-handed alpha
Helix 108	108	G	83	96	Right-handed alpha
Helix 109	109	G	98	120	Right-handed alpha
Helix 110	110	G	161	174	Right-handed alpha
Helix 111	111	G	187	200	Right-handed alpha
Helix 112	112	G	203	205	Right-handed 310
Helix 113	113	G	213	218	Right-handed alpha
Helix 114	114	G	219	224	Right-handed alpha
Helix 115	115	G	235	246	Right-handed alpha
Helix 116	116	G	268	285	Right-handed alpha
Helix 117	117	G	286	289	Right-handed 310
Helix 118	118	G	301	318	Right-handed alpha
Helix 119	119	G	335	352	Right-handed alpha
Helix 120	120	G	379	384	Right-handed alpha
Helix 121	121	G	399	408	Right-handed alpha
Helix 122	122	G	422	433	Right-handed alpha
Helix 123	123	G	466	474	Right-handed alpha
Helix 124	124	H	46	60	Right-handed alpha
Helix 125	125	H	65	83	Right-handed alpha
Helix 126	126	H	83	96	Right-handed alpha
Helix 127	127	H	98	120	Right-handed alpha
Helix 128	128	H	161	174	Right-handed alpha
Helix 129	129	H	187	200	Right-handed alpha
Helix 130	130	H	203	205	Right-handed 310
Helix 131	131	H	213	218	Right-handed alpha
Helix 132	132	H	219	224	Right-handed alpha
Helix 133	133	H	235	246	Right-handed alpha
Helix 134	134	H	268	285	Right-handed alpha
Helix 135	135	H	286	289	Right-handed 310
Helix 136	136	H	301	318	Right-handed alpha
Helix 137	137	H	335	352	Right-handed alpha
Helix 138	138	H	379	384	Right-handed alpha
Helix 139	139	H	399	408	Right-handed alpha
Helix 140	140	H	422	433	Right-handed alpha
Helix 141	141	H	466	474	Right-handed alpha

There are 38 sheets in PDB entry 4I3T. 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,

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	20	22	first strand
Strand 2	A	15	17	anti-parallel
Strand 3	A	207	209	anti-parallel
Strand 4	A	178	182	parallel
Strand 5	A	151	155	parallel
Strand 6	A	229	233	parallel
Strand 7	A	250	254	parallel

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There are 2 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	27	31	first strand
Strand 2	A	38	43	anti-parallel

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There are 10 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	127	129	first strand
Strand 2	A	139	147	anti-parallel
Strand 3	A	475	483	anti-parallel
Strand 4	F	437	440	parallel
Strand 5	F	417	419	parallel
Strand 6	F	259	263	parallel
Strand 7	F	294	300	parallel
Strand 8	F	391	396	parallel
Strand 9	F	371	373	parallel
Strand 10	F	355	358	anti-parallel

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There are 10 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	355	358	first strand
Strand 2	A	371	373	anti-parallel
Strand 3	A	391	396	parallel
Strand 4	A	294	300	parallel
Strand 5	A	259	263	parallel
Strand 6	A	417	419	parallel
Strand 7	A	437	440	parallel
Strand 8	F	475	483	parallel
Strand 9	F	139	147	anti-parallel
Strand 10	F	127	129	anti-parallel

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There are 2 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	412	413	first strand
Strand 2	A	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	20	22	first strand
Strand 2	B	15	17	anti-parallel
Strand 3	B	207	209	anti-parallel
Strand 4	B	178	182	parallel
Strand 5	B	151	155	parallel
Strand 6	B	229	233	parallel
Strand 7	B	250	254	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	B	27	31	first strand
Strand 2	B	38	43	anti-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	127	129	first strand
Strand 2	B	139	147	anti-parallel
Strand 3	B	475	483	anti-parallel

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There are 7 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	355	358	first strand
Strand 2	B	371	373	anti-parallel
Strand 3	B	391	396	parallel
Strand 4	B	294	300	parallel
Strand 5	B	259	263	parallel
Strand 6	B	417	419	parallel
Strand 7	B	439	440	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	B	412	413	first strand
Strand 2	B	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	20	22	first strand
Strand 2	C	15	17	anti-parallel
Strand 3	C	207	209	anti-parallel
Strand 4	C	178	182	parallel
Strand 5	C	151	155	parallel
Strand 6	C	229	233	parallel
Strand 7	C	250	254	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	C	27	31	first strand
Strand 2	C	38	43	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	127	129	first strand
Strand 2	C	139	147	anti-parallel
Strand 3	C	475	483	anti-parallel
Strand 4	E	437	440	parallel
Strand 5	E	417	419	parallel
Strand 6	E	259	263	parallel
Strand 7	E	294	300	parallel
Strand 8	E	391	396	parallel
Strand 9	E	371	373	parallel
Strand 10	E	355	358	anti-parallel

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There are 10 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	355	358	first strand
Strand 2	C	371	373	anti-parallel
Strand 3	C	391	396	parallel
Strand 4	C	294	300	parallel
Strand 5	C	259	263	parallel
Strand 6	C	417	419	parallel
Strand 7	C	437	440	parallel
Strand 8	E	475	483	parallel
Strand 9	E	139	147	anti-parallel
Strand 10	E	127	129	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	C	412	413	first strand
Strand 2	C	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	15	17	first strand
Strand 2	D	20	22	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	27	31	first strand
Strand 2	D	38	43	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	127	129	first strand
Strand 2	D	139	147	anti-parallel
Strand 3	D	475	483	anti-parallel

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There are 5 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	207	209	first strand
Strand 2	D	178	182	parallel
Strand 3	D	151	155	parallel
Strand 4	D	229	233	parallel
Strand 5	D	250	254	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	D	355	358	first strand
Strand 2	D	371	373	anti-parallel
Strand 3	D	391	396	parallel
Strand 4	D	294	300	parallel
Strand 5	D	259	263	parallel
Strand 6	D	417	419	parallel
Strand 7	D	439	440	parallel

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There are 2 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	412	413	first strand
Strand 2	D	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	20	22	first strand
Strand 2	E	15	17	anti-parallel
Strand 3	E	207	209	anti-parallel
Strand 4	E	178	182	parallel
Strand 5	E	151	155	parallel
Strand 6	E	229	233	parallel
Strand 7	E	250	254	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	27	31	first strand
Strand 2	E	38	43	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	E	412	413	first strand
Strand 2	E	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	15	17	first strand
Strand 2	F	20	22	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	F	27	31	first strand
Strand 2	F	38	43	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	F	207	209	first strand
Strand 2	F	178	182	parallel
Strand 3	F	151	155	parallel
Strand 4	F	229	233	parallel
Strand 5	F	250	254	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	F	412	413	first strand
Strand 2	F	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	20	22	first strand
Strand 2	G	15	17	anti-parallel
Strand 3	G	207	209	anti-parallel
Strand 4	G	178	182	parallel
Strand 5	G	151	155	parallel
Strand 6	G	229	233	parallel
Strand 7	G	250	254	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	G	27	31	first strand
Strand 2	G	38	43	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	G	127	129	first strand
Strand 2	G	139	147	anti-parallel
Strand 3	G	475	483	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	355	358	first strand
Strand 2	G	371	373	anti-parallel
Strand 3	G	391	396	parallel
Strand 4	G	294	300	parallel
Strand 5	G	259	263	parallel
Strand 6	G	417	419	parallel
Strand 7	G	439	440	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	G	412	413	first strand
Strand 2	G	456	457	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	20	22	first strand
Strand 2	H	15	17	anti-parallel
Strand 3	H	207	209	anti-parallel
Strand 4	H	178	182	parallel
Strand 5	H	151	155	parallel
Strand 6	H	229	233	parallel
Strand 7	H	250	254	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	H	27	31	first strand
Strand 2	H	38	43	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	127	129	first strand
Strand 2	H	139	147	anti-parallel
Strand 3	H	475	483	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	355	358	first strand
Strand 2	H	371	373	anti-parallel
Strand 3	H	391	396	parallel
Strand 4	H	294	300	parallel
Strand 5	H	259	263	parallel
Strand 6	H	417	419	parallel
Strand 7	H	439	440	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	H	412	413	first strand
Strand 2	H	456	457	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: 4I3T

Analysis of interatomic Contacts of Structural Units in PDB entry:
4I3T