Analysis of interatomic Contacts of Structural Units in PDB entry:
3EK1

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 3EK1 entry

There are 8 chains in PDB entry 3EK1 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLY -1	ARG 483
B	MET 1	ARG 483
C	MET 1	ARG 483
D	MET 1	ARG 483
E	MET 1	ARG 483
F	MET 1	ARG 483
G	LEU 2	ARG 483
H	MET 1	ARG 483

There are153 helices in PDB entry 3EK1. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	6	10	Right-handed 310
Helix 2	2	A	47	68	Right-handed alpha
Helix 3	3	A	69	87	Right-handed alpha
Helix 4	4	A	87	100	Right-handed alpha
Helix 5	5	A	102	125	Right-handed alpha
Helix 6	6	A	161	175	Right-handed alpha
Helix 7	7	A	187	200	Right-handed alpha
Helix 8	8	A	213	224	Right-handed alpha
Helix 9	9	A	235	247	Right-handed alpha
Helix 10	10	A	248	250	Right-handed 310
Helix 11	11	A	270	284	Right-handed alpha
Helix 12	12	A	285	288	Right-handed 310
Helix 13	13	A	300	316	Right-handed alpha
Helix 14	14	A	334	351	Right-handed alpha
Helix 15	15	A	379	383	Right-handed 310
Helix 16	16	A	398	408	Right-handed alpha
Helix 17	17	A	421	432	Right-handed alpha
Helix 18	18	A	454	456	Right-handed 310
Helix 19	19	A	467	470	Right-handed 310
Helix 20	20	B	6	10	Right-handed 310
Helix 21	21	B	47	67	Right-handed alpha
Helix 22	22	B	69	87	Right-handed alpha
Helix 23	23	B	87	100	Right-handed alpha
Helix 24	24	B	102	125	Right-handed alpha
Helix 25	25	B	161	175	Right-handed alpha
Helix 26	26	B	186	200	Right-handed alpha
Helix 27	27	B	213	224	Right-handed alpha
Helix 28	28	B	235	247	Right-handed alpha
Helix 29	29	B	248	250	Right-handed 310
Helix 30	30	B	270	284	Right-handed alpha
Helix 31	31	B	285	288	Right-handed 310
Helix 32	32	B	300	316	Right-handed alpha
Helix 33	33	B	334	351	Right-handed alpha
Helix 34	34	B	379	383	Right-handed 310
Helix 35	35	B	398	408	Right-handed alpha
Helix 36	36	B	421	432	Right-handed alpha
Helix 37	37	B	454	456	Right-handed 310
Helix 38	38	B	467	470	Right-handed 310
Helix 39	39	C	6	10	Right-handed 310
Helix 40	40	C	47	68	Right-handed alpha
Helix 41	41	C	69	87	Right-handed alpha
Helix 42	42	C	87	100	Right-handed alpha
Helix 43	43	C	102	125	Right-handed alpha
Helix 44	44	C	161	175	Right-handed alpha
Helix 45	45	C	186	201	Right-handed alpha
Helix 46	46	C	213	224	Right-handed alpha
Helix 47	47	C	235	247	Right-handed alpha
Helix 48	48	C	248	250	Right-handed 310
Helix 49	49	C	270	284	Right-handed alpha
Helix 50	50	C	285	288	Right-handed 310
Helix 51	51	C	300	316	Right-handed alpha
Helix 52	52	C	334	351	Right-handed alpha
Helix 53	53	C	379	384	Right-handed alpha
Helix 54	54	C	398	407	Right-handed alpha
Helix 55	55	C	421	432	Right-handed alpha
Helix 56	56	C	454	456	Right-handed 310
Helix 57	57	C	467	470	Right-handed 310
Helix 58	58	D	6	10	Right-handed 310
Helix 59	59	D	47	68	Right-handed alpha
Helix 60	60	D	69	87	Right-handed alpha
Helix 61	61	D	87	100	Right-handed alpha
Helix 62	62	D	102	125	Right-handed alpha
Helix 63	63	D	161	175	Right-handed alpha
Helix 64	64	D	186	200	Right-handed alpha
Helix 65	65	D	213	224	Right-handed alpha
Helix 66	66	D	235	247	Right-handed alpha
Helix 67	67	D	248	250	Right-handed 310
Helix 68	68	D	270	284	Right-handed alpha
Helix 69	69	D	285	288	Right-handed 310
Helix 70	70	D	302	316	Right-handed alpha
Helix 71	71	D	334	351	Right-handed alpha
Helix 72	72	D	379	383	Right-handed 310
Helix 73	73	D	398	407	Right-handed alpha
Helix 74	74	D	421	432	Right-handed alpha
Helix 75	75	D	454	456	Right-handed 310
Helix 76	76	D	467	470	Right-handed 310
Helix 77	77	E	6	10	Right-handed 310
Helix 78	78	E	47	68	Right-handed alpha
Helix 79	79	E	69	87	Right-handed alpha
Helix 80	80	E	87	100	Right-handed alpha
Helix 81	81	E	102	125	Right-handed alpha
Helix 82	82	E	161	174	Right-handed alpha
Helix 83	83	E	186	200	Right-handed alpha
Helix 84	84	E	213	224	Right-handed alpha
Helix 85	85	E	235	247	Right-handed alpha
Helix 86	86	E	248	250	Right-handed 310
Helix 87	87	E	270	284	Right-handed alpha
Helix 88	88	E	285	288	Right-handed 310
Helix 89	89	E	302	316	Right-handed alpha
Helix 90	90	E	334	351	Right-handed alpha
Helix 91	91	E	379	383	Right-handed 310
Helix 92	92	E	398	408	Right-handed alpha
Helix 93	93	E	421	432	Right-handed alpha
Helix 94	94	E	454	456	Right-handed 310
Helix 95	95	E	467	470	Right-handed 310
Helix 96	96	F	6	10	Right-handed 310
Helix 97	97	F	47	68	Right-handed alpha
Helix 98	98	F	69	87	Right-handed alpha
Helix 99	99	F	87	100	Right-handed alpha
Helix 100	100	F	102	125	Right-handed alpha
Helix 101	101	F	161	174	Right-handed alpha
Helix 102	102	F	187	201	Right-handed alpha
Helix 103	103	F	213	224	Right-handed alpha
Helix 104	104	F	235	247	Right-handed alpha
Helix 105	105	F	248	250	Right-handed 310
Helix 106	106	F	270	284	Right-handed alpha
Helix 107	107	F	285	288	Right-handed 310
Helix 108	108	F	300	316	Right-handed alpha
Helix 109	109	F	334	351	Right-handed alpha
Helix 110	110	F	379	384	Right-handed alpha
Helix 111	111	F	398	408	Right-handed alpha
Helix 112	112	F	421	432	Right-handed alpha
Helix 113	113	F	454	456	Right-handed 310
Helix 114	114	F	467	470	Right-handed 310
Helix 115	115	G	6	10	Right-handed 310
Helix 116	116	G	47	68	Right-handed alpha
Helix 117	117	G	69	87	Right-handed alpha
Helix 118	118	G	87	100	Right-handed alpha
Helix 119	119	G	102	124	Right-handed alpha
Helix 120	120	G	125	127	Right-handed 310
Helix 121	121	G	161	174	Right-handed alpha
Helix 122	122	G	186	200	Right-handed alpha
Helix 123	123	G	213	224	Right-handed alpha
Helix 124	124	G	235	247	Right-handed alpha
Helix 125	125	G	248	250	Right-handed 310
Helix 126	126	G	270	284	Right-handed alpha
Helix 127	127	G	285	288	Right-handed 310
Helix 128	128	G	302	316	Right-handed alpha
Helix 129	129	G	334	351	Right-handed alpha
Helix 130	130	G	379	383	Right-handed 310
Helix 131	131	G	398	407	Right-handed alpha
Helix 132	132	G	421	432	Right-handed alpha
Helix 133	133	G	454	456	Right-handed 310
Helix 134	134	G	463	470	Right-handed 310
Helix 135	135	H	6	10	Right-handed 310
Helix 136	136	H	47	68	Right-handed alpha
Helix 137	137	H	69	87	Right-handed alpha
Helix 138	138	H	87	100	Right-handed alpha
Helix 139	139	H	102	125	Right-handed alpha
Helix 140	140	H	161	175	Right-handed alpha
Helix 141	141	H	187	201	Right-handed alpha
Helix 142	142	H	213	224	Right-handed alpha
Helix 143	143	H	235	247	Right-handed alpha
Helix 144	144	H	248	250	Right-handed 310
Helix 145	145	H	270	284	Right-handed alpha
Helix 146	146	H	285	288	Right-handed 310
Helix 147	147	H	300	316	Right-handed alpha
Helix 148	148	H	334	351	Right-handed alpha
Helix 149	149	H	379	384	Right-handed alpha
Helix 150	150	H	398	407	Right-handed alpha
Helix 151	151	H	421	432	Right-handed alpha
Helix 152	152	H	454	456	Right-handed 310
Helix 153	153	H	467	470	Right-handed 310

There are 33 sheets in PDB entry 3EK1. 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,

There are 2 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	14	16	first strand
Strand 2	A	19	21	anti-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	28	32	first strand
Strand 2	A	39	44	anti-parallel

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There are 20 strands in C sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	354	357	first strand
Strand 2	B	370	375	anti-parallel
Strand 3	B	390	396	parallel
Strand 4	B	293	299	parallel
Strand 5	B	261	265	parallel
Strand 6	B	414	418	parallel
Strand 7	B	436	439	parallel
Strand 8	C	472	480	parallel
Strand 9	C	139	147	anti-parallel
Strand 10	C	129	132	anti-parallel
Strand 11	A	129	132	anti-parallel
Strand 12	A	139	147	anti-parallel
Strand 13	A	472	480	anti-parallel
Strand 14	D	436	439	parallel
Strand 15	D	414	418	parallel
Strand 16	D	261	265	parallel
Strand 17	D	293	299	parallel
Strand 18	D	390	396	parallel
Strand 19	D	370	375	parallel
Strand 20	D	354	357	anti-parallel

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There are 6 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	207	209	first strand
Strand 2	A	177	181	parallel
Strand 3	A	150	154	parallel
Strand 4	A	229	233	parallel
Strand 5	A	252	256	parallel
Strand 6	A	458	459	anti-parallel

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There are 20 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	354	357	first strand
Strand 2	A	370	375	anti-parallel
Strand 3	A	390	396	parallel
Strand 4	A	293	299	parallel
Strand 5	A	261	265	parallel
Strand 6	A	414	418	parallel
Strand 7	A	436	439	parallel
Strand 8	D	472	480	parallel
Strand 9	D	139	147	anti-parallel
Strand 10	D	129	132	anti-parallel
Strand 11	B	129	132	anti-parallel
Strand 12	B	139	147	anti-parallel
Strand 13	B	472	480	anti-parallel
Strand 14	C	436	439	parallel
Strand 15	C	414	418	parallel
Strand 16	C	261	265	parallel
Strand 17	C	293	299	parallel
Strand 18	C	390	396	parallel
Strand 19	C	370	375	parallel
Strand 20	C	354	357	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	361	363	first strand
Strand 2	A	366	367	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	B	14	16	first strand
Strand 2	B	19	21	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	B	28	32	first strand
Strand 2	B	39	44	anti-parallel

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There are 6 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	207	209	first strand
Strand 2	B	177	181	parallel
Strand 3	B	150	154	parallel
Strand 4	B	227	233	parallel
Strand 5	B	252	256	parallel
Strand 6	B	458	459	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	B	361	363	first strand
Strand 2	B	366	367	anti-parallel

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There are 2 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	14	16	first strand
Strand 2	C	19	21	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	C	28	32	first strand
Strand 2	C	39	44	anti-parallel

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There are 6 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	207	209	first strand
Strand 2	C	177	181	parallel
Strand 3	C	150	154	parallel
Strand 4	C	227	233	parallel
Strand 5	C	252	256	parallel
Strand 6	C	458	459	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	14	16	first strand
Strand 2	D	19	21	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	D	28	32	first strand
Strand 2	D	39	44	anti-parallel

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There are 6 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	207	209	first strand
Strand 2	D	177	181	parallel
Strand 3	D	150	154	parallel
Strand 4	D	227	233	parallel
Strand 5	D	252	256	parallel
Strand 6	D	458	459	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	E	14	16	first strand
Strand 2	E	19	21	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	E	28	32	first strand
Strand 2	E	39	44	anti-parallel

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There are 20 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	354	357	first strand
Strand 2	F	370	375	anti-parallel
Strand 3	F	390	396	parallel
Strand 4	F	293	299	parallel
Strand 5	F	261	265	parallel
Strand 6	F	414	418	parallel
Strand 7	F	436	439	parallel
Strand 8	G	472	480	parallel
Strand 9	G	139	147	anti-parallel
Strand 10	G	129	132	anti-parallel
Strand 11	E	129	132	anti-parallel
Strand 12	E	139	147	anti-parallel
Strand 13	E	472	480	anti-parallel
Strand 14	H	436	439	parallel
Strand 15	H	414	418	parallel
Strand 16	H	261	265	parallel
Strand 17	H	293	299	parallel
Strand 18	H	390	396	parallel
Strand 19	H	370	375	parallel
Strand 20	H	354	357	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	207	209	first strand
Strand 2	E	177	181	parallel
Strand 3	E	150	154	parallel
Strand 4	E	227	233	parallel
Strand 5	E	252	256	parallel
Strand 6	E	458	459	anti-parallel

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There are 20 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	354	357	first strand
Strand 2	E	370	375	anti-parallel
Strand 3	E	390	396	parallel
Strand 4	E	293	299	parallel
Strand 5	E	261	265	parallel
Strand 6	E	414	418	parallel
Strand 7	E	436	439	parallel
Strand 8	H	472	480	parallel
Strand 9	H	139	147	anti-parallel
Strand 10	H	129	132	anti-parallel
Strand 11	F	129	132	anti-parallel
Strand 12	F	139	147	anti-parallel
Strand 13	F	472	480	anti-parallel
Strand 14	G	436	439	parallel
Strand 15	G	414	418	parallel
Strand 16	G	261	265	parallel
Strand 17	G	293	299	parallel
Strand 18	G	390	396	parallel
Strand 19	G	370	375	parallel
Strand 20	G	354	357	anti-parallel

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There are 2 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	361	363	first strand
Strand 2	E	366	367	anti-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	F	14	16	first strand
Strand 2	F	19	21	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	F	28	32	first strand
Strand 2	F	39	44	anti-parallel

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There are 6 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	207	209	first strand
Strand 2	F	177	181	parallel
Strand 3	F	150	154	parallel
Strand 4	F	227	233	parallel
Strand 5	F	252	256	parallel
Strand 6	F	458	459	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	361	363	first strand
Strand 2	F	366	367	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	G	14	16	first strand
Strand 2	G	19	21	anti-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	G	28	32	first strand
Strand 2	G	39	44	anti-parallel

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There are 6 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	207	209	first strand
Strand 2	G	177	181	parallel
Strand 3	G	150	154	parallel
Strand 4	G	227	233	parallel
Strand 5	G	252	256	parallel
Strand 6	G	458	459	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	G	361	363	first strand
Strand 2	G	366	367	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	H	14	16	first strand
Strand 2	H	19	21	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	28	32	first strand
Strand 2	H	39	44	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	207	209	first strand
Strand 2	H	177	181	parallel
Strand 3	H	150	154	parallel
Strand 4	H	227	233	parallel
Strand 5	H	252	256	parallel
Strand 6	H	458	459	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: 3EK1

Analysis of interatomic Contacts of Structural Units in PDB entry:
3EK1