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


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 3IRS entry

There are 3 chains in PDB entry 3IRS (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LEU 1ARG 281
B
 LEU 1ARG 281
C
 LEU 1ARG 281
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 56 helices in PDB entry 3IRS. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
12 17Right-handed 310
Helix 2
2
A
18 23Right-handed alpha
Helix 3
3
A
23 35Right-handed alpha
Helix 4
4
A
39 45Right-handed alpha
Helix 5
5
A
46 57Right-handed alpha
Helix 6
6
A
76 87Right-handed alpha
Helix 7
7
A
101 115Right-handed alpha
Helix 8
8
A
123 127Right-handed 310
Helix 9
9
A
135 137Right-handed 310
Helix 10
10
A
138 148Right-handed alpha
Helix 11
11
A
163 168Right-handed 310
Helix 12
12
A
169 179Right-handed alpha
Helix 13
13
A
193 204Right-handed alpha
Helix 14
14
A
211 216Right-handed 310
Helix 15
15
A
220 229Right-handed alpha
Helix 16
16
A
230 235Right-handed 310
Helix 17
17
A
246 256Right-handed alpha
Helix 18
18
A
260 269Right-handed alpha
Helix 19
19
A
269 279Right-handed alpha
Helix 20
20
B
14 17Right-handed 310
Helix 21
21
B
18 23Right-handed alpha
Helix 22
22
B
23 35Right-handed alpha
Helix 23
23
B
39 44Right-handed alpha
Helix 24
24
B
46 58Right-handed alpha
Helix 25
25
B
76 87Right-handed alpha
Helix 26
26
B
101 115Right-handed alpha
Helix 27
27
B
123 127Right-handed 310
Helix 28
28
B
135 137Right-handed 310
Helix 29
29
B
138 148Right-handed alpha
Helix 30
30
B
163 168Right-handed 310
Helix 31
31
B
169 179Right-handed alpha
Helix 32
32
B
193 204Right-handed alpha
Helix 33
33
B
211 216Right-handed 310
Helix 34
34
B
220 229Right-handed alpha
Helix 35
35
B
246 256Right-handed alpha
Helix 36
36
B
260 269Right-handed alpha
Helix 37
37
B
269 279Right-handed alpha
Helix 38
38
C
12 17Right-handed 310
Helix 39
39
C
18 23Right-handed alpha
Helix 40
40
C
23 35Right-handed alpha
Helix 41
41
C
39 44Right-handed alpha
Helix 42
42
C
46 58Right-handed alpha
Helix 43
43
C
76 87Right-handed alpha
Helix 44
44
C
101 115Right-handed alpha
Helix 45
45
C
123 127Right-handed 310
Helix 46
46
C
135 137Right-handed 310
Helix 47
47
C
138 148Right-handed alpha
Helix 48
48
C
163 168Right-handed 310
Helix 49
49
C
169 179Right-handed alpha
Helix 50
50
C
193 204Right-handed alpha
Helix 51
51
C
211 216Right-handed 310
Helix 52
52
C
220 229Right-handed alpha
Helix 53
53
C
230 235Right-handed 310
Helix 54
54
C
246 256Right-handed alpha
Helix 55
55
C
260 269Right-handed alpha
Helix 56
56
C
269 279Right-handed alpha
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There are 6 sheets in PDB entry 3IRS. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F,

There are 7 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
4 5first strand
Strand 2
A
61 65parallel
Strand 3
A
91 96parallel
Strand 4
A
120 122parallel
Strand 5
A
152 155parallel
Strand 6
A
184 187parallel
Strand 7
A
207 210parallel
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There are 2 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
68 69first strand
Strand 2
A
73 74anti-parallel
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There are 7 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
3 5first strand
Strand 2
B
59 65parallel
Strand 3
B
91 96parallel
Strand 4
B
120 122parallel
Strand 5
B
152 155parallel
Strand 6
B
184 187parallel
Strand 7
B
207 210parallel
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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
68 69first strand
Strand 2
B
73 74anti-parallel
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There are 7 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
3 5first strand
Strand 2
C
59 65parallel
Strand 3
C
91 96parallel
Strand 4
C
120 122parallel
Strand 5
C
152 155parallel
Strand 6
C
184 187parallel
Strand 7
C
207 210parallel
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There are 2 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
68 69first strand
Strand 2
C
73 74anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il