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


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).
For CSU analysis of other PDB entry

This page provides analyses of contacts formed by:
For analysis of ligand-protein contacts, use: 3D structure can be seen in additional window with STING software for 4EQA entry

There are 4 chains in PDB entry 4EQA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 3CYS 148
B
 SER 3CYS 148
C
 ALA 20THR 169
D
 ALA 20THR 169
Residue contacts

1. List of contacts for up to 10 consecutive residues:
Chain ID from residue number to residue number


2. Detailed analyses of contacts for any single residue:
Residue number chain ID
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There are 23 helices in PDB entry 4EQA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
6 16Right-handed alpha
Helix 2
2
A
25 28Right-handed 310
Helix 3
3
A
29 42Right-handed alpha
Helix 4
4
A
49 61Right-handed alpha
Helix 5
5
A
66 76Right-handed alpha
Helix 6
6
A
100 104Right-handed 310
Helix 7
7
A
115 119Right-handed 310
Helix 8
8
A
127 129Right-handed 310
Helix 9
9
A
133 137Right-handed 310
Helix 10
10
B
6 16Right-handed alpha
Helix 11
11
B
19 23Right-handed 310
Helix 12
12
B
25 28Right-handed 310
Helix 13
13
B
29 42Right-handed alpha
Helix 14
14
B
49 61Right-handed alpha
Helix 15
15
B
66 76Right-handed alpha
Helix 16
16
B
100 104Right-handed 310
Helix 17
17
B
115 119Right-handed 310
Helix 18
18
B
127 129Right-handed 310
Helix 19
19
B
133 137Right-handed 310
Helix 20
20
C
151 153Right-handed 310
Helix 21
21
C
163 168Right-handed alpha
Helix 22
22
D
151 153Right-handed 310
Helix 23
23
D
163 168Right-handed alpha
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There are 10 sheets in PDB entry 4EQA. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J,

There are 6 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
62 63first strand
Strand 2
A
139 142anti-parallel
Strand 3
A
80 84anti-parallel
Strand 4
A
91 95anti-parallel
Strand 5
A
107 110anti-parallel
Strand 6
A
120 125anti-parallel
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There are 6 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
62 63first strand
Strand 2
B
139 142anti-parallel
Strand 3
B
80 84anti-parallel
Strand 4
B
91 95anti-parallel
Strand 5
B
107 110anti-parallel
Strand 6
B
120 125anti-parallel
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There are 3 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
24 26first strand
Strand 2
C
87 95anti-parallel
Strand 3
C
62 63anti-parallel
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There are 5 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
24 26first strand
Strand 2
C
87 95anti-parallel
Strand 3
C
100 107anti-parallel
Strand 4
C
110 117anti-parallel
Strand 5
C
123 128anti-parallel
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There are 5 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
30 31first strand
Strand 2
C
38 42anti-parallel
Strand 3
C
46 51anti-parallel
Strand 4
C
68 72anti-parallel
Strand 5
C
78 81anti-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
C
133 137first strand
Strand 2
C
140 147anti-parallel
Strand 3
C
155 161anti-parallel
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There are 3 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
24 26first strand
Strand 2
D
87 95anti-parallel
Strand 3
D
62 63anti-parallel
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There are 5 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
24 26first strand
Strand 2
D
87 95anti-parallel
Strand 3
D
100 107anti-parallel
Strand 4
D
110 117anti-parallel
Strand 5
D
123 128anti-parallel
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There are 5 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
30 32first strand
Strand 2
D
35 42anti-parallel
Strand 3
D
46 51anti-parallel
Strand 4
D
68 72anti-parallel
Strand 5
D
78 81anti-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
D
133 137first strand
Strand 2
D
140 147anti-parallel
Strand 3
D
155 161anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il