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

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 3IAI entry

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

Chain ID	Initial residue	Terminal residue
A	GLY 0	PRO 261
B	HIS 4	PRO 261
C	HIS 4	PRO 261
D	SER 3	PRO 261

There are 32 helices in PDB entry 3IAI. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	15	20	Right-handed alpha
Helix 2	2	A	21	25	Right-handed 310
Helix 3	3	A	34	38	Right-handed 310
Helix 4	4	A	130	135	Right-handed alpha
Helix 5	5	A	154	162	Right-handed alpha
Helix 6	6	A	163	168	Right-handed 310
Helix 7	7	A	180	185	Right-handed 310
Helix 8	8	A	219	228	Right-handed alpha
Helix 9	9	B	15	20	Right-handed alpha
Helix 10	10	B	21	25	Right-handed 310
Helix 11	11	B	34	38	Right-handed 310
Helix 12	12	B	130	135	Right-handed alpha
Helix 13	13	B	154	162	Right-handed alpha
Helix 14	14	B	163	168	Right-handed 310
Helix 15	15	B	180	185	Right-handed 310
Helix 16	16	B	219	227	Right-handed alpha
Helix 17	17	C	15	20	Right-handed alpha
Helix 18	18	C	21	25	Right-handed 310
Helix 19	19	C	34	38	Right-handed 310
Helix 20	20	C	130	135	Right-handed alpha
Helix 21	21	C	154	162	Right-handed alpha
Helix 22	22	C	163	168	Right-handed 310
Helix 23	23	C	180	185	Right-handed 310
Helix 24	24	C	219	227	Right-handed alpha
Helix 25	25	D	15	20	Right-handed alpha
Helix 26	26	D	21	25	Right-handed 310
Helix 27	27	D	34	38	Right-handed 310
Helix 28	28	D	130	135	Right-handed alpha
Helix 29	29	D	154	162	Right-handed alpha
Helix 30	30	D	163	168	Right-handed 310
Helix 31	31	D	180	185	Right-handed 310
Helix 32	32	D	219	228	Right-handed alpha

There are 14 sheets in PDB entry 3IAI. 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,

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	32	33	first strand
Strand 2	A	108	109	parallel

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There are 10 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	39	40	first strand
Strand 2	A	257	258	parallel
Strand 3	A	191	197	anti-parallel
Strand 4	A	205	212	anti-parallel
Strand 5	A	141	150	parallel
Strand 6	A	116	124	anti-parallel
Strand 7	A	86	97	anti-parallel
Strand 8	A	66	69	anti-parallel
Strand 9	A	57	61	anti-parallel
Strand 10	A	173	176	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	A	48	50	first strand
Strand 2	A	78	82	anti-parallel
Strand 3	A	86	97	anti-parallel
Strand 4	A	116	124	anti-parallel
Strand 5	A	141	150	anti-parallel
Strand 6	A	216	218	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	B	32	33	first strand
Strand 2	B	108	109	parallel

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There are 10 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	39	40	first strand
Strand 2	B	257	258	parallel
Strand 3	B	191	197	anti-parallel
Strand 4	B	205	212	anti-parallel
Strand 5	B	141	150	parallel
Strand 6	B	116	124	anti-parallel
Strand 7	B	86	97	anti-parallel
Strand 8	B	66	69	anti-parallel
Strand 9	B	57	61	anti-parallel
Strand 10	B	173	176	anti-parallel

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There are 6 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	48	50	first strand
Strand 2	B	78	82	anti-parallel
Strand 3	B	86	97	anti-parallel
Strand 4	B	116	124	anti-parallel
Strand 5	B	141	150	anti-parallel
Strand 6	B	216	218	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	230	231	first strand
Strand 2	B	239	240	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	C	32	33	first strand
Strand 2	C	108	109	parallel

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There are 10 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	39	40	first strand
Strand 2	C	257	258	parallel
Strand 3	C	191	197	anti-parallel
Strand 4	C	205	212	anti-parallel
Strand 5	C	141	150	parallel
Strand 6	C	116	124	anti-parallel
Strand 7	C	86	97	anti-parallel
Strand 8	C	66	69	anti-parallel
Strand 9	C	57	61	anti-parallel
Strand 10	C	173	176	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	C	48	50	first strand
Strand 2	C	78	82	anti-parallel
Strand 3	C	86	97	anti-parallel
Strand 4	C	116	124	anti-parallel
Strand 5	C	141	150	anti-parallel
Strand 6	C	216	218	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	D	32	33	first strand
Strand 2	D	108	109	parallel

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There are 10 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	39	40	first strand
Strand 2	D	257	258	parallel
Strand 3	D	191	197	anti-parallel
Strand 4	D	205	212	anti-parallel
Strand 5	D	141	150	parallel
Strand 6	D	116	124	anti-parallel
Strand 7	D	86	97	anti-parallel
Strand 8	D	66	69	anti-parallel
Strand 9	D	57	61	anti-parallel
Strand 10	D	173	176	anti-parallel

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There are 6 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	48	50	first strand
Strand 2	D	78	82	anti-parallel
Strand 3	D	86	97	anti-parallel
Strand 4	D	116	124	anti-parallel
Strand 5	D	141	150	anti-parallel
Strand 6	D	216	218	parallel

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There are 2 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	230	231	first strand
Strand 2	D	239	240	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: 3IAI

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