Analysis of interatomic Contacts of Structural Units in PDB entry:
2IHW

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 2IHW entry

There are 8 chains in PDB entry 2IHW (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLY 188	LYS 421
B	GLY 188	LYS 421
C	GLY 188	LYS 421
D	GLY 188	LYS 421
E	GLY 188	LYS 421
F	GLY 188	LYS 421
G	GLY 188	LYS 421
H	GLY 188	LYS 421

There are 86 helices in PDB entry 2IHW. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	198	210	Right-handed alpha
Helix 2	2	A	223	239	Right-handed alpha
Helix 3	3	A	246	261	Right-handed alpha
Helix 4	4	A	262	264	Right-handed 310
Helix 5	5	A	300	304	Right-handed 310
Helix 6	6	A	305	321	Right-handed alpha
Helix 7	7	A	326	331	Right-handed alpha
Helix 8	8	A	341	343	Right-handed 310
Helix 9	9	A	395	412	Right-handed alpha
Helix 10	10	A	412	418	Right-handed alpha
Helix 11	11	B	198	210	Right-handed alpha
Helix 12	12	B	223	240	Right-handed alpha
Helix 13	13	B	246	261	Right-handed alpha
Helix 14	14	B	262	264	Right-handed 310
Helix 15	15	B	300	304	Right-handed 310
Helix 16	16	B	305	322	Right-handed alpha
Helix 17	17	B	326	331	Right-handed alpha
Helix 18	18	B	339	343	Right-handed 310
Helix 19	19	B	395	412	Right-handed alpha
Helix 20	20	B	413	419	Right-handed 310
Helix 21	21	C	196	198	Right-handed 310
Helix 22	22	C	199	209	Right-handed alpha
Helix 23	23	C	210	212	Right-handed 310
Helix 24	24	C	223	238	Right-handed alpha
Helix 25	25	C	239	241	Right-handed 310
Helix 26	26	C	246	261	Right-handed alpha
Helix 27	27	C	262	264	Right-handed 310
Helix 28	28	C	300	304	Right-handed 310
Helix 29	29	C	305	321	Right-handed alpha
Helix 30	30	C	326	331	Right-handed alpha
Helix 31	31	C	339	343	Right-handed 310
Helix 32	32	C	395	412	Right-handed alpha
Helix 33	33	C	413	420	Right-handed alpha
Helix 34	34	D	196	198	Right-handed 310
Helix 35	35	D	199	210	Right-handed alpha
Helix 36	36	D	223	239	Right-handed alpha
Helix 37	37	D	246	261	Right-handed alpha
Helix 38	38	D	262	264	Right-handed 310
Helix 39	39	D	300	304	Right-handed 310
Helix 40	40	D	305	323	Right-handed alpha
Helix 41	41	D	326	331	Right-handed alpha
Helix 42	42	D	339	343	Right-handed 310
Helix 43	43	D	395	412	Right-handed alpha
Helix 44	44	D	413	418	Right-handed alpha
Helix 45	45	E	198	209	Right-handed alpha
Helix 46	46	E	210	212	Right-handed 310
Helix 47	47	E	223	239	Right-handed alpha
Helix 48	48	E	246	261	Right-handed alpha
Helix 49	49	E	262	264	Right-handed 310
Helix 50	50	E	300	304	Right-handed 310
Helix 51	51	E	305	321	Right-handed alpha
Helix 52	52	E	326	331	Right-handed alpha
Helix 53	53	E	339	343	Right-handed 310
Helix 54	54	E	395	412	Right-handed alpha
Helix 55	55	E	413	418	Right-handed alpha
Helix 56	56	F	199	210	Right-handed alpha
Helix 57	57	F	223	240	Right-handed alpha
Helix 58	58	F	246	261	Right-handed alpha
Helix 59	59	F	262	264	Right-handed 310
Helix 60	60	F	300	304	Right-handed 310
Helix 61	61	F	305	321	Right-handed alpha
Helix 62	62	F	326	331	Right-handed alpha
Helix 63	63	F	339	343	Right-handed 310
Helix 64	64	F	395	412	Right-handed alpha
Helix 65	65	F	414	419	Right-handed 310
Helix 66	66	G	198	209	Right-handed alpha
Helix 67	67	G	210	212	Right-handed 310
Helix 68	68	G	223	239	Right-handed alpha
Helix 69	69	G	246	261	Right-handed alpha
Helix 70	70	G	262	264	Right-handed 310
Helix 71	71	G	300	304	Right-handed 310
Helix 72	72	G	305	321	Right-handed alpha
Helix 73	73	G	326	331	Right-handed alpha
Helix 74	74	G	339	343	Right-handed 310
Helix 75	75	G	395	412	Right-handed alpha
Helix 76	76	G	413	418	Right-handed alpha
Helix 77	77	H	198	210	Right-handed alpha
Helix 78	78	H	223	240	Right-handed alpha
Helix 79	79	H	246	261	Right-handed alpha
Helix 80	80	H	262	264	Right-handed 310
Helix 81	81	H	300	304	Right-handed 310
Helix 82	82	H	305	323	Right-handed alpha
Helix 83	83	H	326	331	Right-handed alpha
Helix 84	84	H	339	343	Right-handed 310
Helix 85	85	H	395	412	Right-handed alpha
Helix 86	86	H	413	420	Right-handed alpha

There are 30 sheets in PDB entry 2IHW. 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, Y, Z, AA, AB, AC, AD,

There are 3 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	191	194	first strand
Strand 2	B	274	277	anti-parallel
Strand 3	B	266	268	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	297	298	first strand
Strand 2	A	283	285	anti-parallel
Strand 3	A	335	339	parallel
Strand 4	A	358	362	parallel
Strand 5	A	377	390	anti-parallel
Strand 6	A	366	371	anti-parallel

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There are 7 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	298	first strand
Strand 2	A	283	285	anti-parallel
Strand 3	A	335	339	parallel
Strand 4	A	358	362	parallel
Strand 5	A	377	390	anti-parallel
Strand 6	A	214	222	anti-parallel
Strand 7	C	348	349	anti-parallel

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There are 3 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	266	268	first strand
Strand 2	A	274	277	anti-parallel
Strand 3	C	191	194	anti-parallel

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There are 2 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	287	289	first strand
Strand 2	A	292	294	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	348	349	first strand
Strand 2	B	214	222	anti-parallel
Strand 3	B	377	390	anti-parallel
Strand 4	B	358	362	anti-parallel
Strand 5	B	335	338	parallel
Strand 6	B	283	285	parallel
Strand 7	B	297	298	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	A	348	349	first strand
Strand 2	B	214	222	anti-parallel
Strand 3	B	377	390	anti-parallel
Strand 4	B	366	371	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	B	191	194	first strand
Strand 2	C	274	277	anti-parallel
Strand 3	C	266	268	anti-parallel

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There are 2 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	287	289	first strand
Strand 2	B	292	294	anti-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	B	348	349	first strand
Strand 2	C	214	222	anti-parallel
Strand 3	C	377	390	anti-parallel
Strand 4	C	358	362	anti-parallel
Strand 5	C	335	338	parallel
Strand 6	C	283	285	parallel
Strand 7	C	297	298	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	348	349	first strand
Strand 2	C	214	222	anti-parallel
Strand 3	C	377	390	anti-parallel
Strand 4	C	366	371	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	C	287	289	first strand
Strand 2	C	292	294	anti-parallel

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There are 3 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	191	194	first strand
Strand 2	E	274	277	anti-parallel
Strand 3	E	266	268	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	297	298	first strand
Strand 2	D	283	285	anti-parallel
Strand 3	D	335	338	parallel
Strand 4	D	358	362	parallel
Strand 5	D	377	390	anti-parallel
Strand 6	D	366	371	anti-parallel

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There are 7 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	298	first strand
Strand 2	D	283	285	anti-parallel
Strand 3	D	335	338	parallel
Strand 4	D	358	362	parallel
Strand 5	D	377	390	anti-parallel
Strand 6	D	214	222	anti-parallel
Strand 7	F	348	349	anti-parallel

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There are 3 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	266	268	first strand
Strand 2	D	274	277	anti-parallel
Strand 3	F	191	194	anti-parallel

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There are 2 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	287	289	first strand
Strand 2	D	292	294	anti-parallel

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There are 7 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	348	349	first strand
Strand 2	E	214	222	anti-parallel
Strand 3	E	377	390	anti-parallel
Strand 4	E	358	371	anti-parallel
Strand 5	E	335	338	parallel
Strand 6	E	283	285	parallel
Strand 7	E	297	298	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	191	194	first strand
Strand 2	F	274	277	anti-parallel
Strand 3	F	266	268	anti-parallel

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There are 2 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	287	288	first strand
Strand 2	E	293	294	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	348	349	first strand
Strand 2	F	214	222	anti-parallel
Strand 3	F	377	390	anti-parallel
Strand 4	F	358	371	anti-parallel
Strand 5	F	335	338	parallel
Strand 6	F	283	285	parallel
Strand 7	F	297	298	anti-parallel

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There are 2 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	287	289	first strand
Strand 2	F	292	294	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	214	222	first strand
Strand 2	G	380	390	anti-parallel
Strand 3	G	358	362	anti-parallel
Strand 4	G	335	338	parallel
Strand 5	G	283	285	parallel
Strand 6	G	297	298	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	G	214	222	first strand
Strand 2	G	380	390	anti-parallel
Strand 3	G	366	368	anti-parallel

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There are 2 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	266	268	first strand
Strand 2	G	275	277	anti-parallel

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There are 2 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	287	289	first strand
Strand 2	G	292	294	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	214	222	first strand
Strand 2	H	377	390	anti-parallel
Strand 3	H	358	362	anti-parallel
Strand 4	H	335	338	parallel
Strand 5	H	283	285	parallel
Strand 6	H	297	298	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	214	222	first strand
Strand 2	H	377	390	anti-parallel
Strand 3	H	366	371	anti-parallel

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There are 2 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	266	268	first strand
Strand 2	H	275	277	anti-parallel

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There are 2 strands in AD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	287	289	first strand
Strand 2	H	292	294	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: 2IHW

Analysis of interatomic Contacts of Structural Units in PDB entry:
2IHW