Analysis of interatomic Contacts of Structural Units in PDB entry:
4IW3

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 4IW3 entry

There are 4 chains in PDB entry 4IW3 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	HIS 7	PHE 207
B	LEU 10	GLU 397
K	LEU 10	GLU 397
J	HIS 7	PHE 207

There are 30 helices in PDB entry 4IW3. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	7	21	Right-handed alpha
Helix 2	2	A	30	46	Right-handed alpha
Helix 3	3	A	57	61	Right-handed 310
Helix 4	4	A	80	102	Right-handed alpha
Helix 5	5	A	147	151	Right-handed 310
Helix 6	6	A	159	161	Right-handed 310
Helix 7	7	B	24	40	Right-handed alpha
Helix 8	8	B	84	95	Right-handed alpha
Helix 9	9	B	113	127	Right-handed alpha
Helix 10	10	B	145	160	Right-handed alpha
Helix 11	11	B	174	181	Right-handed alpha
Helix 12	12	B	188	203	Right-handed alpha
Helix 13	13	B	208	212	Right-handed 310
Helix 14	14	B	286	290	Right-handed 310
Helix 15	15	B	316	320	Right-handed 310
Helix 16	16	K	24	40	Right-handed alpha
Helix 17	17	K	84	94	Right-handed alpha
Helix 18	18	K	113	126	Right-handed alpha
Helix 19	19	K	137	141	Right-handed 310
Helix 20	20	K	145	161	Right-handed alpha
Helix 21	21	K	174	181	Right-handed alpha
Helix 22	22	K	188	203	Right-handed alpha
Helix 23	23	K	208	212	Right-handed 310
Helix 24	24	K	286	290	Right-handed 310
Helix 25	25	J	8	21	Right-handed alpha
Helix 26	26	J	30	47	Right-handed alpha
Helix 27	27	J	57	61	Right-handed 310
Helix 28	28	J	80	102	Right-handed alpha
Helix 29	29	J	147	151	Right-handed 310
Helix 30	30	J	159	161	Right-handed 310

There are 15 sheets in PDB entry 4IW3. 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,

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	22	25	first strand
Strand 2	A	173	177	anti-parallel
Strand 3	A	134	141	anti-parallel
Strand 4	A	192	201	anti-parallel
Strand 5	A	105	115	anti-parallel
Strand 6	A	71	74	anti-parallel
Strand 7	A	51	52	anti-parallel

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There are 4 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	121	124	first strand
Strand 2	A	183	185	anti-parallel
Strand 3	A	154	157	anti-parallel
Strand 4	A	163	166	anti-parallel

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There are 6 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	66	71	first strand
Strand 2	B	76	81	anti-parallel
Strand 3	B	12	19	parallel
Strand 4	B	101	107	parallel
Strand 5	B	130	136	parallel
Strand 6	B	170	172	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	B	215	217	first strand
Strand 2	B	295	297	anti-parallel
Strand 3	B	245	249	anti-parallel
Strand 4	B	255	264	anti-parallel
Strand 5	B	277	282	anti-parallel
Strand 6	B	228	234	anti-parallel
Strand 7	B	221	224	anti-parallel

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There are 5 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	215	217	first strand
Strand 2	B	295	297	anti-parallel
Strand 3	B	245	249	anti-parallel
Strand 4	B	255	264	anti-parallel
Strand 5	B	267	269	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	B	239	241	first strand
Strand 2	B	271	273	anti-parallel

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There are 7 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	303	314	first strand
Strand 2	B	359	372	anti-parallel
Strand 3	B	339	346	anti-parallel
Strand 4	B	333	336	anti-parallel
Strand 5	B	377	382	anti-parallel
Strand 6	B	385	397	anti-parallel
Strand 7	B	303	314	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	326	327	first strand
Strand 2	B	353	354	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	K	66	71	first strand
Strand 2	K	76	81	anti-parallel
Strand 3	K	12	19	parallel
Strand 4	K	101	107	parallel
Strand 5	K	130	136	parallel
Strand 6	K	170	172	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	215	217	first strand
Strand 2	K	295	297	anti-parallel
Strand 3	K	245	249	anti-parallel
Strand 4	K	255	264	anti-parallel
Strand 5	K	277	282	anti-parallel
Strand 6	K	228	234	anti-parallel
Strand 7	K	221	224	anti-parallel

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There are 5 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	215	217	first strand
Strand 2	K	295	297	anti-parallel
Strand 3	K	245	249	anti-parallel
Strand 4	K	255	264	anti-parallel
Strand 5	K	267	269	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	K	239	241	first strand
Strand 2	K	271	273	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	K	303	314	first strand
Strand 2	K	359	372	anti-parallel
Strand 3	K	339	346	anti-parallel
Strand 4	K	333	336	anti-parallel
Strand 5	K	377	382	anti-parallel
Strand 6	K	385	397	anti-parallel
Strand 7	K	303	314	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	22	25	first strand
Strand 2	J	173	177	anti-parallel
Strand 3	J	134	141	anti-parallel
Strand 4	J	192	200	anti-parallel
Strand 5	J	107	115	anti-parallel
Strand 6	J	71	74	anti-parallel
Strand 7	J	51	52	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	J	121	124	first strand
Strand 2	J	183	185	anti-parallel
Strand 3	J	154	157	anti-parallel
Strand 4	J	163	166	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: 4IW3

Analysis of interatomic Contacts of Structural Units in PDB entry:
4IW3