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

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 3CPI entry

There are 2 chains in PDB entry 3CPI (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
G	ASP 7	LYS 443
H	THR 5	LYS 443

There are 40 helices in PDB entry 3CPI. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	G	18	31	Right-handed alpha
Helix 2	2	G	52	61	Right-handed alpha
Helix 3	3	G	66	74	Right-handed alpha
Helix 4	4	G	76	80	Right-handed 310
Helix 5	5	G	93	102	Right-handed alpha
Helix 6	6	G	103	107	Right-handed 310
Helix 7	7	G	130	137	Right-handed alpha
Helix 8	8	G	141	158	Right-handed alpha
Helix 9	9	G	162	167	Right-handed 310
Helix 10	10	G	175	184	Right-handed alpha
Helix 11	11	G	186	197	Right-handed alpha
Helix 12	12	G	203	208	Right-handed 310
Helix 13	13	G	209	228	Right-handed alpha
Helix 14	14	G	240	253	Right-handed alpha
Helix 15	15	G	294	299	Right-handed 310
Helix 16	16	G	333	337	Right-handed 310
Helix 17	17	G	351	353	Right-handed 310
Helix 18	18	G	372	377	Right-handed alpha
Helix 19	19	G	377	382	Right-handed alpha
Helix 20	20	G	421	437	Right-handed alpha
Helix 21	21	H	18	31	Right-handed alpha
Helix 22	22	H	52	61	Right-handed alpha
Helix 23	23	H	66	74	Right-handed alpha
Helix 24	24	H	76	80	Right-handed 310
Helix 25	25	H	93	103	Right-handed alpha
Helix 26	26	H	104	107	Right-handed 310
Helix 27	27	H	130	137	Right-handed alpha
Helix 28	28	H	141	158	Right-handed alpha
Helix 29	29	H	162	167	Right-handed 310
Helix 30	30	H	175	184	Right-handed alpha
Helix 31	31	H	186	197	Right-handed alpha
Helix 32	32	H	203	208	Right-handed 310
Helix 33	33	H	209	228	Right-handed alpha
Helix 34	34	H	240	253	Right-handed alpha
Helix 35	35	H	294	299	Right-handed 310
Helix 36	36	H	333	337	Right-handed 310
Helix 37	37	H	351	353	Right-handed 310
Helix 38	38	H	372	377	Right-handed alpha
Helix 39	39	H	377	383	Right-handed alpha
Helix 40	40	H	421	437	Right-handed alpha

There are 10 sheets in PDB entry 3CPI. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J,

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	G	256	258	first strand
Strand 2	G	35	38	parallel
Strand 3	G	12	15	parallel
Strand 4	G	290	292	parallel
Strand 5	G	409	411	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	G	50	51	first strand
Strand 2	G	82	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	89	90	first strand
Strand 2	G	232	235	anti-parallel
Strand 3	G	110	112	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	123	126	first strand
Strand 2	G	115	120	anti-parallel
Strand 3	G	328	332	parallel
Strand 4	G	343	349	anti-parallel
Strand 5	G	360	367	anti-parallel
Strand 6	G	301	315	anti-parallel
Strand 7	G	389	400	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	265	268	first strand
Strand 2	G	275	280	anti-parallel
Strand 3	G	283	286	anti-parallel

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There are 5 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	256	258	first strand
Strand 2	H	35	38	parallel
Strand 3	H	12	15	parallel
Strand 4	H	289	292	parallel
Strand 5	H	409	411	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	H	50	51	first strand
Strand 2	H	82	83	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	89	90	first strand
Strand 2	H	232	235	anti-parallel
Strand 3	H	110	112	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	H	123	126	first strand
Strand 2	H	115	120	anti-parallel
Strand 3	H	328	332	parallel
Strand 4	H	343	349	anti-parallel
Strand 5	H	360	367	anti-parallel
Strand 6	H	301	315	anti-parallel
Strand 7	H	389	400	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	265	268	first strand
Strand 2	H	275	280	anti-parallel
Strand 3	H	283	286	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: 3CPI

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