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

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 4ELK entry

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

Chain ID	Initial residue	Terminal residue
A	GLN 3	SER 204
B	PRO 3	ALA 244
C	GLN 3	SER 207
D	GLY 2	TRP 35

There are 14 helices in PDB entry 4ELK. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	81	85	Right-handed 310
Helix 2	2	A	167	170	Right-handed 310
Helix 3	3	A	186	191	Right-handed alpha
Helix 4	4	B	84	88	Right-handed 310
Helix 5	5	B	117	121	Right-handed 310
Helix 6	6	B	132	140	Right-handed alpha
Helix 7	7	B	199	204	Right-handed alpha
Helix 8	8	C	81	85	Right-handed 310
Helix 9	9	C	167	170	Right-handed 310
Helix 10	10	C	186	191	Right-handed alpha
Helix 11	11	D	84	88	Right-handed 310
Helix 12	12	D	117	121	Right-handed 310
Helix 13	13	D	132	140	Right-handed alpha
Helix 14	14	D	199	204	Right-handed alpha

There are 20 sheets in PDB entry 4ELK. 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,

There are 5 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	5	8	first strand
Strand 2	A	20	26	anti-parallel
Strand 3	A	72	77	anti-parallel
Strand 4	A	62	67	anti-parallel
Strand 5	A	55	59	anti-parallel

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There are 5 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	11	15	first strand
Strand 2	A	108	113	parallel
Strand 3	A	86	94	anti-parallel
Strand 4	A	31	39	anti-parallel
Strand 5	A	46	51	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	11	15	first strand
Strand 2	A	108	113	parallel
Strand 3	A	86	94	anti-parallel
Strand 4	A	103	104	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	122	127	first strand
Strand 2	A	135	140	anti-parallel
Strand 3	A	171	180	anti-parallel
Strand 4	A	156	158	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	122	127	first strand
Strand 2	A	135	140	anti-parallel
Strand 3	A	171	180	anti-parallel
Strand 4	A	162	166	anti-parallel

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There are 4 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	6	8	first strand
Strand 2	B	20	25	anti-parallel
Strand 3	B	76	80	anti-parallel
Strand 4	B	67	69	anti-parallel

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There are 6 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	11	15	first strand
Strand 2	B	110	115	parallel
Strand 3	B	89	96	anti-parallel
Strand 4	B	32	39	anti-parallel
Strand 5	B	43	51	anti-parallel
Strand 6	B	54	58	anti-parallel

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There are 4 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	11	15	first strand
Strand 2	B	110	115	parallel
Strand 3	B	89	96	anti-parallel
Strand 4	B	105	106	anti-parallel

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There are 4 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	125	129	first strand
Strand 2	B	141	151	anti-parallel
Strand 3	B	189	198	anti-parallel
Strand 4	B	171	173	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	125	129	first strand
Strand 2	B	141	151	anti-parallel
Strand 3	B	189	198	anti-parallel
Strand 4	B	178	179	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	165	167	first strand
Strand 2	B	156	162	anti-parallel
Strand 3	B	208	215	anti-parallel
Strand 4	B	234	241	anti-parallel

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There are 5 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	5	8	first strand
Strand 2	C	20	26	anti-parallel
Strand 3	C	72	77	anti-parallel
Strand 4	C	62	67	anti-parallel
Strand 5	C	55	59	anti-parallel

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There are 5 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	11	15	first strand
Strand 2	C	108	113	parallel
Strand 3	C	86	93	anti-parallel
Strand 4	C	33	39	anti-parallel
Strand 5	C	46	51	anti-parallel

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There are 4 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	11	15	first strand
Strand 2	C	108	113	parallel
Strand 3	C	86	93	anti-parallel
Strand 4	C	103	104	anti-parallel

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There are 8 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	156	158	first strand
Strand 2	C	171	180	anti-parallel
Strand 3	C	135	140	anti-parallel
Strand 4	C	122	128	anti-parallel
Strand 5	D	125	130	anti-parallel
Strand 6	D	141	151	anti-parallel
Strand 7	D	189	198	anti-parallel
Strand 8	D	171	173	anti-parallel

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There are 8 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	162	166	first strand
Strand 2	C	171	180	anti-parallel
Strand 3	C	135	140	anti-parallel
Strand 4	C	122	128	anti-parallel
Strand 5	D	125	130	anti-parallel
Strand 6	D	141	151	anti-parallel
Strand 7	D	189	198	anti-parallel
Strand 8	D	178	179	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	D	6	8	first strand
Strand 2	D	20	25	anti-parallel
Strand 3	D	76	80	anti-parallel
Strand 4	D	66	69	anti-parallel

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There are 6 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	11	15	first strand
Strand 2	D	110	115	parallel
Strand 3	D	89	96	anti-parallel
Strand 4	D	32	39	anti-parallel
Strand 5	D	43	51	anti-parallel
Strand 6	D	54	58	anti-parallel

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There are 4 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	11	15	first strand
Strand 2	D	110	115	parallel
Strand 3	D	89	96	anti-parallel
Strand 4	D	105	106	anti-parallel

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There are 4 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	165	167	first strand
Strand 2	D	156	162	anti-parallel
Strand 3	D	208	215	anti-parallel
Strand 4	D	234	241	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: 4ELK

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