Analysis of interatomic Contacts of Structural Units in PDB entry:
4K2U

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 4K2U entry

There are 3 chains in PDB entry 4K2U (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	VAL 10	CYS 281
B	GLU 9	CYS 283
H	GLU 1	ALA 114

There are 41 helices in PDB entry 4K2U. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	39	43	Right-handed alpha
Helix 2	2	A	46	50	Right-handed 310
Helix 3	3	A	56	79	Right-handed alpha
Helix 4	4	A	84	104	Right-handed alpha
Helix 5	5	A	110	127	Right-handed alpha
Helix 6	6	A	135	146	Right-handed alpha
Helix 7	7	A	147	158	Right-handed alpha
Helix 8	8	A	163	167	Right-handed 310
Helix 9	9	A	174	195	Right-handed alpha
Helix 10	10	A	216	244	Right-handed alpha
Helix 11	11	A	266	279	Right-handed alpha
Helix 12	12	B	10	14	Right-handed 310
Helix 13	13	B	39	43	Right-handed alpha
Helix 14	14	B	46	50	Right-handed 310
Helix 15	15	B	56	79	Right-handed alpha
Helix 16	16	B	84	104	Right-handed alpha
Helix 17	17	B	113	124	Right-handed alpha
Helix 18	18	B	132	158	Right-handed alpha
Helix 19	19	B	163	167	Right-handed 310
Helix 20	20	B	174	195	Right-handed alpha
Helix 21	21	B	195	202	Right-handed alpha
Helix 22	22	B	216	244	Right-handed alpha
Helix 23	23	B	249	256	Right-handed alpha
Helix 24	24	B	265	281	Right-handed alpha
Helix 25	25	H	28	32	Right-handed 310
Helix 26	26	H	61	64	Right-handed 310
Helix 27	27	H	83	87	Right-handed 310
Helix 28	28	H	156	158	Right-handed 310
Helix 29	29	H	184	188	Right-handed 310
Helix 30	30	H	200	203	Right-handed 310
Helix 31	31	I	28	32	Right-handed 310
Helix 32	32	I	61	64	Right-handed 310
Helix 33	33	I	83	87	Right-handed 310
Helix 34	34	I	156	158	Right-handed 310
Helix 35	35	I	186	188	Right-handed 310
Helix 36	36	I	200	203	Right-handed 310
Helix 37	37	L	79	83	Right-handed 310
Helix 38	38	L	121	126	Right-handed alpha
Helix 39	39	M	79	83	Right-handed 310
Helix 40	40	M	121	126	Right-handed alpha
Helix 41	41	M	183	189	Right-handed alpha

There are 24 sheets in PDB entry 4K2U. 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 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	23	26	first strand
Strand 2	A	35	38	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	B	23	26	first strand
Strand 2	B	35	38	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	H	3	6	first strand
Strand 2	H	19	25	anti-parallel
Strand 3	H	77	82	anti-parallel
Strand 4	H	67	72	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	H	10	12	first strand
Strand 2	H	107	111	parallel
Strand 3	H	88	95	anti-parallel
Strand 4	H	34	39	anti-parallel
Strand 5	H	46	51	anti-parallel
Strand 6	H	57	59	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	H	10	12	first strand
Strand 2	H	107	111	parallel
Strand 3	H	88	95	anti-parallel
Strand 4	H	100	103	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	H	120	124	first strand
Strand 2	H	137	145	anti-parallel
Strand 3	H	174	182	anti-parallel
Strand 4	H	163	165	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	H	120	124	first strand
Strand 2	H	137	145	anti-parallel
Strand 3	H	174	182	anti-parallel
Strand 4	H	169	171	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	H	151	154	first strand
Strand 2	H	194	199	anti-parallel
Strand 3	H	204	209	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	I	3	6	first strand
Strand 2	I	18	25	anti-parallel
Strand 3	I	77	82	anti-parallel
Strand 4	I	67	72	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	I	10	12	first strand
Strand 2	I	107	111	parallel
Strand 3	I	88	95	anti-parallel
Strand 4	I	34	39	anti-parallel
Strand 5	I	45	51	anti-parallel
Strand 6	I	57	59	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	I	10	12	first strand
Strand 2	I	107	111	parallel
Strand 3	I	88	95	anti-parallel
Strand 4	I	100	103	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	120	124	first strand
Strand 2	I	135	145	anti-parallel
Strand 3	I	174	184	anti-parallel
Strand 4	I	163	165	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	120	124	first strand
Strand 2	I	135	145	anti-parallel
Strand 3	I	174	184	anti-parallel
Strand 4	I	169	171	anti-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	I	151	154	first strand
Strand 2	I	194	199	anti-parallel
Strand 3	I	204	209	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	L	4	5	first strand
Strand 2	L	19	25	anti-parallel
Strand 3	L	70	75	anti-parallel
Strand 4	L	62	67	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	L	10	13	first strand
Strand 2	L	102	106	parallel
Strand 3	L	85	90	anti-parallel
Strand 4	L	33	38	anti-parallel
Strand 5	L	44	49	anti-parallel
Strand 6	L	53	54	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	L	10	13	first strand
Strand 2	L	102	106	parallel
Strand 3	L	85	90	anti-parallel
Strand 4	L	97	98	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	114	118	first strand
Strand 2	L	129	139	anti-parallel
Strand 3	L	173	182	anti-parallel
Strand 4	L	159	163	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	L	153	155	first strand
Strand 2	L	145	150	anti-parallel
Strand 3	L	192	197	anti-parallel
Strand 4	L	208	209	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	M	4	5	first strand
Strand 2	M	19	25	anti-parallel
Strand 3	M	70	75	anti-parallel
Strand 4	M	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	10	14	first strand
Strand 2	M	102	107	parallel
Strand 3	M	84	90	anti-parallel
Strand 4	M	33	38	anti-parallel
Strand 5	M	44	49	anti-parallel
Strand 6	M	53	54	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	M	10	14	first strand
Strand 2	M	102	107	parallel
Strand 3	M	84	90	anti-parallel
Strand 4	M	97	98	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	M	114	118	first strand
Strand 2	M	129	139	anti-parallel
Strand 3	M	173	182	anti-parallel
Strand 4	M	159	163	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	154	155	first strand
Strand 2	M	145	150	anti-parallel
Strand 3	M	192	197	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: 4K2U

Analysis of interatomic Contacts of Structural Units in PDB entry:
4K2U