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


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 4IOS entry

There are 8 chains in PDB entry 4IOS (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 THR 64ASP 163
B
 LYS 65ASP 163
C
 LYS 65ASP 163
D
 VAL 2SER 122
E
 VAL 2SER 122
F
 VAL 2SER 122
G
 VAL 2VAL 121
H
 THR 64ASP 163
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 8 helices in PDB entry 4IOS. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
110 114Right-handed 310
Helix 2
2
B
110 114Right-handed 310
Helix 3
3
C
110 114Right-handed 310
Helix 4
4
D
106 110Right-handed 310
Helix 5
5
E
106 110Right-handed 310
Helix 6
6
F
106 110Right-handed 310
Helix 7
7
G
106 110Right-handed 310
Helix 8
8
H
110 114Right-handed 310
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There are 16 sheets in PDB entry 4IOS. 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,

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
66 72first strand
Strand 2
A
75 82anti-parallel
Strand 3
A
85 92anti-parallel
Strand 4
A
154 161anti-parallel
Strand 5
A
119 125anti-parallel
Strand 6
A
131 136anti-parallel
Strand 7
A
143 144anti-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
B
66 72first strand
Strand 2
B
75 82anti-parallel
Strand 3
B
85 92anti-parallel
Strand 4
B
154 161anti-parallel
Strand 5
B
119 125anti-parallel
Strand 6
B
131 136anti-parallel
Strand 7
B
143 144anti-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
C
66 72first strand
Strand 2
C
75 82anti-parallel
Strand 3
C
85 92anti-parallel
Strand 4
C
154 161anti-parallel
Strand 5
C
119 125anti-parallel
Strand 6
C
131 136anti-parallel
Strand 7
C
143 144anti-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
D
3 7first strand
Strand 2
D
18 25anti-parallel
Strand 3
D
78 83anti-parallel
Strand 4
D
68 72anti-parallel
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There are 6 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
11 12first strand
Strand 2
D
117 121parallel
Strand 3
D
92 99anti-parallel
Strand 4
D
33 39anti-parallel
Strand 5
D
46 52anti-parallel
Strand 6
D
58 60anti-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
D
11 12first strand
Strand 2
D
117 121parallel
Strand 3
D
92 99anti-parallel
Strand 4
D
112 113anti-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
E
3 7first strand
Strand 2
E
18 25anti-parallel
Strand 3
E
78 83anti-parallel
Strand 4
E
68 73anti-parallel
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There are 6 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
11 13first strand
Strand 2
E
117 122parallel
Strand 3
E
92 99anti-parallel
Strand 4
E
33 39anti-parallel
Strand 5
E
46 52anti-parallel
Strand 6
E
58 60anti-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
E
11 13first strand
Strand 2
E
117 122parallel
Strand 3
E
92 99anti-parallel
Strand 4
E
112 113anti-parallel
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There are 4 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
3 7first strand
Strand 2
F
18 25anti-parallel
Strand 3
F
78 83anti-parallel
Strand 4
F
68 72anti-parallel
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There are 6 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
11 12first strand
Strand 2
F
117 121parallel
Strand 3
F
92 99anti-parallel
Strand 4
F
33 39anti-parallel
Strand 5
F
46 52anti-parallel
Strand 6
F
58 60anti-parallel
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There are 4 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
11 12first strand
Strand 2
F
117 121parallel
Strand 3
F
92 99anti-parallel
Strand 4
F
112 113anti-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
G
3 7first strand
Strand 2
G
18 25anti-parallel
Strand 3
G
78 83anti-parallel
Strand 4
G
68 73anti-parallel
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There are 5 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
G
58 60first strand
Strand 2
G
46 52anti-parallel
Strand 3
G
33 39anti-parallel
Strand 4
G
92 99anti-parallel
Strand 5
G
112 113anti-parallel
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There are 5 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
G
58 60first strand
Strand 2
G
46 52anti-parallel
Strand 3
G
33 39anti-parallel
Strand 4
G
92 99anti-parallel
Strand 5
G
117 119anti-parallel
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There are 7 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
66 72first strand
Strand 2
H
75 82anti-parallel
Strand 3
H
85 92anti-parallel
Strand 4
H
154 161anti-parallel
Strand 5
H
119 125anti-parallel
Strand 6
H
131 136anti-parallel
Strand 7
H
143 144anti-parallel
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