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

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 2IBU entry

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

Chain ID	Initial residue	Terminal residue
A	PRO 37	VAL 125
A	ALA 127	LEU 427
B	PRO 37	VAL 125
B	ALA 127	LEU 427
C	SER 35	VAL 125
C	ALA 127	LEU 427
D	SER 35	VAL 125
D	ALA 127	LEU 427

There are 75 helices in PDB entry 2IBU. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	63	80	Right-handed alpha
Helix 2	2	A	82	86	Right-handed 310
Helix 3	3	A	102	111	Right-handed alpha
Helix 4	4	A	124	126	Right-handed 310
Helix 5	5	A	127	142	Right-handed alpha
Helix 6	6	A	157	159	Right-handed 310
Helix 7	7	A	178	183	Right-handed alpha
Helix 8	8	A	193	204	Right-handed alpha
Helix 9	9	A	207	228	Right-handed alpha
Helix 10	10	A	254	258	Right-handed 310
Helix 11	11	A	263	267	Right-handed 310
Helix 12	12	A	298	304	Right-handed alpha
Helix 13	13	A	321	326	Right-handed 310
Helix 14	14	A	327	340	Right-handed alpha
Helix 15	15	A	343	345	Right-handed 310
Helix 16	16	A	356	368	Right-handed alpha
Helix 17	17	A	370	374	Right-handed 310
Helix 18	18	A	379	384	Right-handed alpha
Helix 19	19	A	389	402	Right-handed alpha
Helix 20	20	B	63	80	Right-handed alpha
Helix 21	21	B	82	86	Right-handed 310
Helix 22	22	B	102	111	Right-handed alpha
Helix 23	23	B	124	126	Right-handed 310
Helix 24	24	B	127	142	Right-handed alpha
Helix 25	25	B	157	159	Right-handed 310
Helix 26	26	B	178	183	Right-handed alpha
Helix 27	27	B	193	205	Right-handed alpha
Helix 28	28	B	207	228	Right-handed alpha
Helix 29	29	B	254	258	Right-handed 310
Helix 30	30	B	263	267	Right-handed 310
Helix 31	31	B	298	304	Right-handed alpha
Helix 32	32	B	321	326	Right-handed 310
Helix 33	33	B	327	341	Right-handed alpha
Helix 34	34	B	343	345	Right-handed 310
Helix 35	35	B	356	368	Right-handed alpha
Helix 36	36	B	370	374	Right-handed 310
Helix 37	37	B	379	384	Right-handed alpha
Helix 38	38	B	386	402	Right-handed alpha
Helix 39	39	C	63	80	Right-handed alpha
Helix 40	40	C	82	86	Right-handed 310
Helix 41	41	C	102	111	Right-handed alpha
Helix 42	42	C	124	126	Right-handed 310
Helix 43	43	C	127	142	Right-handed alpha
Helix 44	44	C	157	159	Right-handed 310
Helix 45	45	C	178	182	Right-handed alpha
Helix 46	46	C	193	204	Right-handed alpha
Helix 47	47	C	207	228	Right-handed alpha
Helix 48	48	C	254	258	Right-handed 310
Helix 49	49	C	263	267	Right-handed 310
Helix 50	50	C	298	304	Right-handed alpha
Helix 51	51	C	321	326	Right-handed 310
Helix 52	52	C	327	341	Right-handed alpha
Helix 53	53	C	343	345	Right-handed 310
Helix 54	54	C	356	368	Right-handed alpha
Helix 55	55	C	370	374	Right-handed 310
Helix 56	56	C	379	384	Right-handed alpha
Helix 57	57	C	386	402	Right-handed alpha
Helix 58	58	D	63	80	Right-handed alpha
Helix 59	59	D	82	86	Right-handed 310
Helix 60	60	D	102	111	Right-handed alpha
Helix 61	61	D	124	126	Right-handed 310
Helix 62	62	D	127	142	Right-handed alpha
Helix 63	63	D	157	159	Right-handed 310
Helix 64	64	D	178	183	Right-handed alpha
Helix 65	65	D	193	204	Right-handed alpha
Helix 66	66	D	207	229	Right-handed alpha
Helix 67	67	D	254	258	Right-handed 310
Helix 68	68	D	298	304	Right-handed alpha
Helix 69	69	D	321	326	Right-handed 310
Helix 70	70	D	327	341	Right-handed alpha
Helix 71	71	D	343	345	Right-handed 310
Helix 72	72	D	356	368	Right-handed alpha
Helix 73	73	D	370	374	Right-handed 310
Helix 74	74	D	379	384	Right-handed alpha
Helix 75	75	D	386	402	Right-handed alpha

There are 13 sheets in PDB entry 2IBU. 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,

There are 10 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	53	54	first strand
Strand 2	A	287	297	anti-parallel
Strand 3	A	147	155	anti-parallel
Strand 4	A	88	92	parallel
Strand 5	A	119	123	parallel
Strand 6	B	119	123	anti-parallel
Strand 7	B	88	92	parallel
Strand 8	B	147	155	parallel
Strand 9	B	287	297	anti-parallel
Strand 10	B	53	54	anti-parallel

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There are 18 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	347	352	first strand
Strand 2	A	407	414	parallel
Strand 3	A	418	426	anti-parallel
Strand 4	A	310	319	anti-parallel
Strand 5	A	42	49	anti-parallel
Strand 6	A	287	297	anti-parallel
Strand 7	A	147	155	anti-parallel
Strand 8	A	88	92	parallel
Strand 9	A	119	123	parallel
Strand 10	B	119	123	anti-parallel
Strand 11	B	88	92	parallel
Strand 12	B	147	155	parallel
Strand 13	B	287	297	anti-parallel
Strand 14	B	42	49	anti-parallel
Strand 15	B	310	319	anti-parallel
Strand 16	B	418	426	anti-parallel
Strand 17	B	407	414	anti-parallel
Strand 18	B	347	352	parallel

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There are 9 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	161	163	first strand
Strand 2	A	172	177	anti-parallel
Strand 3	C	172	177	anti-parallel
Strand 4	C	161	163	anti-parallel
Strand 5	D	161	163	anti-parallel
Strand 6	D	173	177	anti-parallel
Strand 7	B	172	177	anti-parallel
Strand 8	B	161	163	anti-parallel
Strand 9	A	161	163	anti-parallel

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There are 2 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	185	186	first strand
Strand 2	A	191	192	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	238	240	first strand
Strand 2	A	248	250	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	185	186	first strand
Strand 2	B	191	192	anti-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	B	238	240	first strand
Strand 2	B	248	250	anti-parallel

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There are 10 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	53	54	first strand
Strand 2	C	287	297	anti-parallel
Strand 3	C	147	155	anti-parallel
Strand 4	C	88	92	parallel
Strand 5	C	119	123	parallel
Strand 6	D	119	123	anti-parallel
Strand 7	D	88	92	parallel
Strand 8	D	147	155	parallel
Strand 9	D	287	297	anti-parallel
Strand 10	D	53	54	anti-parallel

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There are 18 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	347	352	first strand
Strand 2	C	407	414	parallel
Strand 3	C	418	426	anti-parallel
Strand 4	C	310	319	anti-parallel
Strand 5	C	42	49	anti-parallel
Strand 6	C	287	297	anti-parallel
Strand 7	C	147	155	anti-parallel
Strand 8	C	88	92	parallel
Strand 9	C	119	123	parallel
Strand 10	D	119	123	anti-parallel
Strand 11	D	88	92	parallel
Strand 12	D	147	155	parallel
Strand 13	D	287	297	anti-parallel
Strand 14	D	42	49	anti-parallel
Strand 15	D	310	319	anti-parallel
Strand 16	D	418	426	anti-parallel
Strand 17	D	407	414	anti-parallel
Strand 18	D	347	352	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	185	186	first strand
Strand 2	C	191	192	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	238	240	first strand
Strand 2	C	248	250	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	D	185	186	first strand
Strand 2	D	191	192	anti-parallel

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There are 2 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	238	240	first strand
Strand 2	D	248	250	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: 2IBU

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