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

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 4QHB entry

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

Chain ID	Initial residue	Terminal residue
A	GLU 27	GLU 416
B	GLU 27	GLU 416
C	GLU 27	GLU 416
D	GLU 27	ARG 124

There are 26 helices in PDB entry 4QHB. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	115	121	Right-handed alpha
Helix 2	2	A	130	135	Right-handed alpha
Helix 3	3	A	196	201	Right-handed alpha
Helix 4	4	A	257	261	Right-handed 310
Helix 5	5	A	318	326	Right-handed 310
Helix 6	6	A	358	360	Right-handed 310
Helix 7	7	B	115	121	Right-handed alpha
Helix 8	8	B	130	135	Right-handed alpha
Helix 9	9	B	172	176	Right-handed 310
Helix 10	10	B	196	201	Right-handed alpha
Helix 11	11	B	257	261	Right-handed 310
Helix 12	12	B	318	326	Right-handed 310
Helix 13	13	B	358	360	Right-handed 310
Helix 14	14	C	115	121	Right-handed alpha
Helix 15	15	C	130	135	Right-handed alpha
Helix 16	16	C	172	176	Right-handed 310
Helix 17	17	C	196	201	Right-handed alpha
Helix 18	18	C	257	261	Right-handed 310
Helix 19	19	C	318	326	Right-handed 310
Helix 20	20	C	358	360	Right-handed 310
Helix 21	21	D	115	121	Right-handed alpha
Helix 22	22	D	130	135	Right-handed alpha
Helix 23	23	D	196	201	Right-handed alpha
Helix 24	24	D	257	261	Right-handed 310
Helix 25	25	D	318	326	Right-handed 310
Helix 26	26	D	358	360	Right-handed 310

There are 20 sheets in PDB entry 4QHB. 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,

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	34	44	first strand
Strand 2	A	218	228	anti-parallel
Strand 3	A	84	94	anti-parallel
Strand 4	A	187	192	anti-parallel

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There are 7 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	54	55	first strand
Strand 2	A	63	65	anti-parallel
Strand 3	A	70	76	anti-parallel
Strand 4	A	203	210	anti-parallel
Strand 5	A	102	107	anti-parallel
Strand 6	A	150	156	anti-parallel
Strand 7	A	370	371	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	239	246	first strand
Strand 2	A	405	415	anti-parallel
Strand 3	A	274	286	anti-parallel
Strand 4	A	374	381	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	264	270	first strand
Strand 2	A	384	391	anti-parallel
Strand 3	A	300	304	anti-parallel
Strand 4	A	307	312	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	331	342	first strand
Strand 2	A	345	356	anti-parallel

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There are 4 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	34	44	first strand
Strand 2	B	218	228	anti-parallel
Strand 3	B	84	94	anti-parallel
Strand 4	B	187	192	anti-parallel

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There are 7 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	54	55	first strand
Strand 2	B	63	65	anti-parallel
Strand 3	B	70	76	anti-parallel
Strand 4	B	203	210	anti-parallel
Strand 5	B	102	107	anti-parallel
Strand 6	B	150	156	anti-parallel
Strand 7	B	370	371	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	239	246	first strand
Strand 2	B	405	415	anti-parallel
Strand 3	B	274	286	anti-parallel
Strand 4	B	374	381	anti-parallel

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There are 4 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	264	270	first strand
Strand 2	B	384	391	anti-parallel
Strand 3	B	300	304	anti-parallel
Strand 4	B	307	312	anti-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	B	331	342	first strand
Strand 2	B	345	356	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	C	34	44	first strand
Strand 2	C	218	228	anti-parallel
Strand 3	C	84	94	anti-parallel
Strand 4	C	187	192	anti-parallel

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There are 7 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	54	55	first strand
Strand 2	C	63	65	anti-parallel
Strand 3	C	70	76	anti-parallel
Strand 4	C	203	210	anti-parallel
Strand 5	C	102	107	anti-parallel
Strand 6	C	150	156	anti-parallel
Strand 7	C	370	371	anti-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	239	246	first strand
Strand 2	C	405	415	anti-parallel
Strand 3	C	274	286	anti-parallel
Strand 4	C	374	381	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	264	270	first strand
Strand 2	C	384	391	anti-parallel
Strand 3	C	300	304	anti-parallel
Strand 4	C	307	312	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	331	342	first strand
Strand 2	C	345	356	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	34	44	first strand
Strand 2	D	218	228	anti-parallel
Strand 3	D	84	94	anti-parallel
Strand 4	D	187	192	anti-parallel

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There are 7 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	54	55	first strand
Strand 2	D	63	65	anti-parallel
Strand 3	D	70	76	anti-parallel
Strand 4	D	203	210	anti-parallel
Strand 5	D	102	107	anti-parallel
Strand 6	D	150	156	anti-parallel
Strand 7	D	370	371	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	239	246	first strand
Strand 2	D	405	415	anti-parallel
Strand 3	D	274	286	anti-parallel
Strand 4	D	374	381	anti-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	264	270	first strand
Strand 2	D	384	391	anti-parallel
Strand 3	D	300	304	anti-parallel
Strand 4	D	307	312	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	D	331	342	first strand
Strand 2	D	345	356	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: 4QHB

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