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

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 1ECB entry

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

Chain ID	Initial residue	Terminal residue
A	CYS 1	LEU 481
B	CYS 1	LEU 478
C	CYS 1	ARG 482
D	CYS 1	LEU 481

There are 70 helices in PDB entry 1ECB. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	13	26	Right-handed alpha
Helix 2	2	A	51	54	Right-handed alpha
Helix 3	3	A	57	62	Right-handed alpha
Helix 4	4	A	107	118	Right-handed alpha
Helix 5	5	A	127	141	Right-handed alpha
Helix 6	6	A	149	162	Right-handed alpha
Helix 7	7	A	210	216	Right-handed alpha
Helix 8	8	A	253	257	Right-handed alpha
Helix 9	9	A	266	268	Right-handed 310
Helix 10	10	A	271	290	Right-handed alpha
Helix 11	11	A	304	316	Right-handed 310
Helix 12	12	A	346	349	Right-handed alpha
Helix 13	13	A	354	356	Right-handed 310
Helix 14	14	A	373	384	Right-handed alpha
Helix 15	15	A	422	429	Right-handed alpha
Helix 16	16	A	439	449	Right-handed alpha
Helix 17	17	A	459	462	Right-handed alpha
Helix 18	18	A	468	478	Right-handed alpha
Helix 19	19	B	13	26	Right-handed alpha
Helix 20	20	B	51	54	Right-handed alpha
Helix 21	21	B	57	62	Right-handed alpha
Helix 22	22	B	107	118	Right-handed alpha
Helix 23	23	B	127	141	Right-handed alpha
Helix 24	24	B	149	162	Right-handed alpha
Helix 25	25	B	210	216	Right-handed alpha
Helix 26	26	B	254	257	Right-handed alpha
Helix 27	27	B	266	268	Right-handed 310
Helix 28	28	B	271	289	Right-handed alpha
Helix 29	29	B	304	316	Right-handed 310
Helix 30	30	B	354	356	Right-handed 310
Helix 31	31	B	373	384	Right-handed alpha
Helix 32	32	B	422	428	Right-handed alpha
Helix 33	33	B	439	449	Right-handed alpha
Helix 34	34	B	459	462	Right-handed alpha
Helix 35	35	B	472	476	Right-handed alpha
Helix 36	36	C	13	26	Right-handed alpha
Helix 37	37	C	51	54	Right-handed alpha
Helix 38	38	C	57	62	Right-handed alpha
Helix 39	39	C	107	118	Right-handed alpha
Helix 40	40	C	127	141	Right-handed alpha
Helix 41	41	C	149	162	Right-handed alpha
Helix 42	42	C	210	216	Right-handed alpha
Helix 43	43	C	253	257	Right-handed alpha
Helix 44	44	C	271	289	Right-handed alpha
Helix 45	45	C	304	316	Right-handed 310
Helix 46	46	C	346	348	Right-handed 310
Helix 47	47	C	354	356	Right-handed 310
Helix 48	48	C	373	384	Right-handed alpha
Helix 49	49	C	412	414	Right-handed 310
Helix 50	50	C	422	429	Right-handed alpha
Helix 51	51	C	439	449	Right-handed alpha
Helix 52	52	C	459	462	Right-handed alpha
Helix 53	53	C	468	480	Right-handed alpha
Helix 54	54	D	13	26	Right-handed alpha
Helix 55	55	D	51	54	Right-handed alpha
Helix 56	56	D	57	62	Right-handed alpha
Helix 57	57	D	107	118	Right-handed alpha
Helix 58	58	D	127	141	Right-handed alpha
Helix 59	59	D	149	162	Right-handed alpha
Helix 60	60	D	210	216	Right-handed alpha
Helix 61	61	D	253	257	Right-handed alpha
Helix 62	62	D	271	289	Right-handed alpha
Helix 63	63	D	304	316	Right-handed 310
Helix 64	64	D	354	356	Right-handed 310
Helix 65	65	D	373	384	Right-handed alpha
Helix 66	66	D	412	414	Right-handed 310
Helix 67	67	D	422	428	Right-handed alpha
Helix 68	68	D	439	449	Right-handed alpha
Helix 69	69	D	459	462	Right-handed alpha
Helix 70	70	D	472	479	Right-handed alpha

There are 16 sheets in PDB entry 1ECB. 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,

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	219	223	first strand
Strand 2	A	191	196	anti-parallel
Strand 3	A	202	207	anti-parallel
Strand 4	A	2	7	anti-parallel
Strand 5	A	67	73	anti-parallel
Strand 6	A	30	36	anti-parallel
Strand 7	A	42	48	anti-parallel

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There are 6 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	88	90	first strand
Strand 2	A	96	104	anti-parallel
Strand 3	A	165	173	anti-parallel
Strand 4	A	177	182	anti-parallel
Strand 5	A	228	233	anti-parallel
Strand 6	A	238	242	anti-parallel

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There are 4 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	297	300	first strand
Strand 2	A	362	366	parallel
Strand 3	A	390	394	parallel
Strand 4	A	433	436	parallel

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There are 2 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	324	326	first strand
Strand 2	A	350	352	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	219	223	first strand
Strand 2	B	191	198	anti-parallel
Strand 3	B	201	207	anti-parallel
Strand 4	B	2	7	anti-parallel
Strand 5	B	67	73	anti-parallel
Strand 6	B	30	36	anti-parallel
Strand 7	B	42	48	anti-parallel

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There are 6 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	88	90	first strand
Strand 2	B	96	104	anti-parallel
Strand 3	B	165	173	anti-parallel
Strand 4	B	177	182	anti-parallel
Strand 5	B	228	233	anti-parallel
Strand 6	B	238	242	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	B	297	300	first strand
Strand 2	B	362	366	parallel
Strand 3	B	390	394	parallel
Strand 4	B	433	436	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	324	326	first strand
Strand 2	B	350	352	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	C	219	223	first strand
Strand 2	C	191	198	anti-parallel
Strand 3	C	201	207	anti-parallel
Strand 4	C	2	7	anti-parallel
Strand 5	C	67	73	anti-parallel
Strand 6	C	30	36	anti-parallel
Strand 7	C	42	48	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	88	90	first strand
Strand 2	C	96	104	anti-parallel
Strand 3	C	165	173	anti-parallel
Strand 4	C	177	182	anti-parallel
Strand 5	C	228	233	anti-parallel
Strand 6	C	238	242	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	C	297	300	first strand
Strand 2	C	362	366	parallel
Strand 3	C	390	394	parallel
Strand 4	C	433	436	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	324	326	first strand
Strand 2	C	350	352	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	219	223	first strand
Strand 2	D	191	196	anti-parallel
Strand 3	D	202	207	anti-parallel
Strand 4	D	2	7	anti-parallel
Strand 5	D	67	73	anti-parallel
Strand 6	D	30	36	anti-parallel
Strand 7	D	42	48	anti-parallel

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There are 6 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	88	90	first strand
Strand 2	D	96	104	anti-parallel
Strand 3	D	165	173	anti-parallel
Strand 4	D	177	182	anti-parallel
Strand 5	D	228	233	anti-parallel
Strand 6	D	238	242	anti-parallel

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There are 4 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	297	300	first strand
Strand 2	D	362	366	parallel
Strand 3	D	390	394	parallel
Strand 4	D	433	436	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	324	326	first strand
Strand 2	D	350	352	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: 1ECB

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