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

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 4IPA entry

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

Chain ID	Initial residue	Terminal residue
A	ALA 12	LYS 383
B	ALA 8	SER 382
C	ALA 8	LYS 383
D	ALA 12	ASN 384

There are 43 helices in PDB entry 4IPA. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	14	39	Right-handed alpha
Helix 2	2	A	44	62	Right-handed alpha
Helix 3	3	A	96	100	Right-handed 310
Helix 4	4	A	139	160	Right-handed alpha
Helix 5	5	A	170	179	Right-handed alpha
Helix 6	6	A	184	198	Right-handed alpha
Helix 7	7	A	277	292	Right-handed alpha
Helix 8	8	A	299	301	Right-handed 310
Helix 9	9	A	303	317	Right-handed alpha
Helix 10	10	A	358	362	Right-handed 310
Helix 11	11	A	370	379	Right-handed alpha
Helix 12	12	B	14	39	Right-handed alpha
Helix 13	13	B	44	61	Right-handed alpha
Helix 14	14	B	96	100	Right-handed 310
Helix 15	15	B	139	161	Right-handed alpha
Helix 16	16	B	170	180	Right-handed alpha
Helix 17	17	B	184	199	Right-handed alpha
Helix 18	18	B	277	292	Right-handed alpha
Helix 19	19	B	299	301	Right-handed 310
Helix 20	20	B	303	317	Right-handed alpha
Helix 21	21	B	358	362	Right-handed 310
Helix 22	22	B	370	378	Right-handed alpha
Helix 23	23	C	14	39	Right-handed alpha
Helix 24	24	C	44	62	Right-handed alpha
Helix 25	25	C	94	99	Right-handed alpha
Helix 26	26	C	140	161	Right-handed alpha
Helix 27	27	C	170	179	Right-handed alpha
Helix 28	28	C	184	199	Right-handed alpha
Helix 29	29	C	277	292	Right-handed alpha
Helix 30	30	C	299	301	Right-handed 310
Helix 31	31	C	303	317	Right-handed alpha
Helix 32	32	C	358	360	Right-handed 310
Helix 33	33	C	370	377	Right-handed alpha
Helix 34	34	D	14	38	Right-handed alpha
Helix 35	35	D	44	62	Right-handed alpha
Helix 36	36	D	140	161	Right-handed alpha
Helix 37	37	D	170	180	Right-handed alpha
Helix 38	38	D	184	199	Right-handed alpha
Helix 39	39	D	277	292	Right-handed alpha
Helix 40	40	D	299	301	Right-handed 310
Helix 41	41	D	303	317	Right-handed alpha
Helix 42	42	D	358	360	Right-handed 310
Helix 43	43	D	370	379	Right-handed alpha

There are 22 sheets in PDB entry 4IPA. 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,

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	71	80	first strand
Strand 2	A	107	116	anti-parallel
Strand 3	A	119	128	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	202	203	first strand
Strand 2	A	242	250	anti-parallel
Strand 3	A	208	212	anti-parallel
Strand 4	A	222	224	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	202	203	first strand
Strand 2	A	242	250	anti-parallel
Strand 3	A	334	344	anti-parallel
Strand 4	A	347	352	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	256	258	first strand
Strand 2	A	326	328	anti-parallel

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There are 3 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	296	297	first strand
Strand 2	A	265	268	anti-parallel
Strand 3	A	320	322	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	B	71	80	first strand
Strand 2	B	107	116	anti-parallel
Strand 3	B	119	128	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	B	202	203	first strand
Strand 2	B	242	250	anti-parallel
Strand 3	B	207	212	anti-parallel
Strand 4	B	222	225	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	B	202	203	first strand
Strand 2	B	242	250	anti-parallel
Strand 3	B	334	344	anti-parallel
Strand 4	B	347	352	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	256	258	first strand
Strand 2	B	326	328	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	296	297	first strand
Strand 2	B	265	268	anti-parallel
Strand 3	B	320	323	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	C	71	80	first strand
Strand 2	C	107	116	anti-parallel
Strand 3	C	119	128	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	138	139	first strand
Strand 2	C	362	363	parallel

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There are 4 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	202	203	first strand
Strand 2	C	242	250	anti-parallel
Strand 3	C	207	212	anti-parallel
Strand 4	C	222	225	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	C	202	203	first strand
Strand 2	C	242	250	anti-parallel
Strand 3	C	334	344	anti-parallel
Strand 4	C	347	352	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	256	258	first strand
Strand 2	C	326	328	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	C	296	297	first strand
Strand 2	C	265	268	anti-parallel
Strand 3	C	320	323	anti-parallel

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There are 3 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	71	80	first strand
Strand 2	D	107	116	anti-parallel
Strand 3	D	119	128	anti-parallel

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There are 2 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	138	139	first strand
Strand 2	D	362	363	parallel

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There are 4 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	202	203	first strand
Strand 2	D	242	250	anti-parallel
Strand 3	D	208	212	anti-parallel
Strand 4	D	222	224	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	202	203	first strand
Strand 2	D	242	250	anti-parallel
Strand 3	D	334	344	anti-parallel
Strand 4	D	347	352	anti-parallel

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There are 2 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	256	258	first strand
Strand 2	D	326	328	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	296	297	first strand
Strand 2	D	265	268	anti-parallel
Strand 3	D	320	322	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: 4IPA

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