Analysis of interatomic Contacts of Structural Units in PDB entry:
4I2O


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 4I2O entry

There are 4 chains in PDB entry 4I2O (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LEU 38ALA 235
B
 LEU 38ALA 235
W
 G 3 G 27
X
 C 3 C 26
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 12 helices in PDB entry 4I2O. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
117 127Right-handed alpha
Helix 2
2
A
127 155Right-handed alpha
Helix 3
3
A
156 173Right-handed alpha
Helix 4
4
A
183 192Right-handed alpha
Helix 5
5
A
194 208Right-handed alpha
Helix 6
6
A
223 229Right-handed alpha
Helix 7
7
B
117 127Right-handed alpha
Helix 8
8
B
127 155Right-handed alpha
Helix 9
9
B
156 173Right-handed alpha
Helix 10
10
B
183 192Right-handed alpha
Helix 11
11
B
194 208Right-handed alpha
Helix 12
12
B
223 229Right-handed alpha
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There are 6 sheets in PDB entry 4I2O. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F,

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
41 45first strand
Strand 2
A
110 116anti-parallel
Strand 3
A
60 66anti-parallel
Strand 4
A
91 92anti-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
50 52first strand
Strand 2
A
103 106anti-parallel
Strand 3
A
69 74anti-parallel
Strand 4
A
80 86anti-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
A
177 179first strand
Strand 2
A
218 221anti-parallel
Strand 3
A
211 213anti-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
B
41 45first strand
Strand 2
B
110 116anti-parallel
Strand 3
B
60 66anti-parallel
Strand 4
B
91 92anti-parallel
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There are 4 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
50 52first strand
Strand 2
B
103 106anti-parallel
Strand 3
B
69 74anti-parallel
Strand 4
B
80 86anti-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
177 179first strand
Strand 2
B
218 221anti-parallel
Strand 3
B
211 213anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il