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

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 2IAA entry

There are 7 chains in PDB entry 2IAA (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	PRO 29	VAL 387
B	GLU 22	SER 61
B	ILE 63	LYS 134
C	ALA 2	SER 129
D	PRO 29	VAL 387
E	GLU 22	SER 61
E	ILE 63	LYS 134

There are 19 helices in PDB entry 2IAA. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	42	44	Right-handed 310
Helix 2	2	A	53	59	Right-handed 310
Helix 3	3	A	138	140	Right-handed 310
Helix 4	4	A	177	180	Right-handed 310
Helix 5	5	A	272	278	Right-handed alpha
Helix 6	6	B	30	34	Right-handed 310
Helix 7	7	B	41	44	Right-handed 310
Helix 8	8	B	101	108	Right-handed 310
Helix 9	9	C	40	45	Right-handed alpha
Helix 10	10	C	54	67	Right-handed alpha
Helix 11	11	C	68	71	Right-handed 310
Helix 12	12	D	42	44	Right-handed 310
Helix 13	13	D	53	59	Right-handed 310
Helix 14	14	D	138	140	Right-handed 310
Helix 15	15	D	177	180	Right-handed 310
Helix 16	16	D	272	278	Right-handed alpha
Helix 17	17	E	30	34	Right-handed 310
Helix 18	18	E	41	44	Right-handed 310
Helix 19	19	E	101	108	Right-handed 310

There are 24 sheets in PDB entry 2IAA. 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,

There are 4 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	72	77	first strand
Strand 2	A	61	66	anti-parallel
Strand 3	A	46	51	anti-parallel
Strand 4	A	379	384	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	80	86	first strand
Strand 2	A	92	100	anti-parallel
Strand 3	A	108	116	anti-parallel
Strand 4	A	122	128	anti-parallel

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There are 4 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	142	144	first strand
Strand 2	A	150	156	anti-parallel
Strand 3	A	160	166	anti-parallel
Strand 4	A	171	176	anti-parallel

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There are 4 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	182	187	first strand
Strand 2	A	194	199	anti-parallel
Strand 3	A	204	209	anti-parallel
Strand 4	A	215	220	anti-parallel

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There are 4 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	237	238	first strand
Strand 2	A	242	246	anti-parallel
Strand 3	A	251	256	anti-parallel
Strand 4	A	263	269	anti-parallel

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There are 3 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	281	282	first strand
Strand 2	A	296	302	anti-parallel
Strand 3	A	288	290	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	281	282	first strand
Strand 2	A	296	302	anti-parallel
Strand 3	A	316	321	anti-parallel
Strand 4	A	326	332	anti-parallel

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There are 4 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	338	342	first strand
Strand 2	A	347	351	anti-parallel
Strand 3	A	356	360	anti-parallel
Strand 4	A	367	372	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	37	39	first strand
Strand 2	B	92	94	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	B	56	57	first strand
Strand 2	B	81	83	anti-parallel
Strand 3	B	122	125	anti-parallel

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There are 3 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	62	68	first strand
Strand 2	B	73	79	anti-parallel
Strand 3	B	128	132	anti-parallel

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There are 3 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	4	9	first strand
Strand 2	C	28	35	parallel
Strand 3	C	92	98	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	19	22	first strand
Strand 2	C	122	127	parallel
Strand 3	C	108	111	anti-parallel
Strand 4	C	49	52	anti-parallel
Strand 5	C	80	83	anti-parallel

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There are 4 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	72	77	first strand
Strand 2	D	61	66	anti-parallel
Strand 3	D	46	51	anti-parallel
Strand 4	D	379	384	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	D	80	86	first strand
Strand 2	D	92	100	anti-parallel
Strand 3	D	108	116	anti-parallel
Strand 4	D	122	128	anti-parallel

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There are 4 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	142	144	first strand
Strand 2	D	150	156	anti-parallel
Strand 3	D	160	166	anti-parallel
Strand 4	D	171	176	anti-parallel

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There are 4 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	182	187	first strand
Strand 2	D	194	199	anti-parallel
Strand 3	D	204	209	anti-parallel
Strand 4	D	215	220	anti-parallel

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There are 4 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	237	238	first strand
Strand 2	D	242	246	anti-parallel
Strand 3	D	251	256	anti-parallel
Strand 4	D	263	269	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	D	281	282	first strand
Strand 2	D	296	302	anti-parallel
Strand 3	D	288	291	anti-parallel

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There are 4 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	281	282	first strand
Strand 2	D	296	302	anti-parallel
Strand 3	D	316	321	anti-parallel
Strand 4	D	326	332	anti-parallel

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There are 4 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	338	342	first strand
Strand 2	D	347	351	anti-parallel
Strand 3	D	356	360	anti-parallel
Strand 4	D	367	372	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	E	37	39	first strand
Strand 2	E	92	94	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	56	57	first strand
Strand 2	E	81	83	anti-parallel
Strand 3	E	122	125	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	E	62	67	first strand
Strand 2	E	74	79	anti-parallel
Strand 3	E	128	132	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: 2IAA

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