Analysis of interatomic Contacts of Structural Units in PDB entry:
4B20


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 4B20 entry

There are 6 chains in PDB entry 4B20 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MET 1LEU 224
B
 MET 1LEU 224
C
 C 2 G 7
D
 A 8 G 16
F
 C 2 G 7
G
 A 8 C 17
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 4B20. 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 24Right-handed alpha
Helix 2
2
A
25 27Right-handed 310
Helix 3
3
A
85 98Right-handed alpha
Helix 4
4
A
121 131Right-handed alpha
Helix 5
5
A
188 199Right-handed alpha
Helix 6
6
A
207 220Right-handed alpha
Helix 7
7
B
12 24Right-handed alpha
Helix 8
8
B
25 27Right-handed 310
Helix 9
9
B
85 100Right-handed alpha
Helix 10
10
B
121 131Right-handed alpha
Helix 11
11
B
188 199Right-handed alpha
Helix 12
12
B
207 220Right-handed alpha
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There are 2 sheets in PDB entry 4B20. Click on sheet of interest to get list of strands forming it: AA, BA,

There are 8 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
65 75first strand
Strand 2
A
51 60anti-parallel
Strand 3
A
38 48anti-parallel
Strand 4
A
106 109parallel
Strand 5
A
134 138parallel
Strand 6
A
179 183anti-parallel
Strand 7
A
164 170anti-parallel
Strand 8
A
156 161anti-parallel
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There are 8 strands in BA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
66 75first strand
Strand 2
B
51 60anti-parallel
Strand 3
B
38 48anti-parallel
Strand 4
B
106 110parallel
Strand 5
B
134 138parallel
Strand 6
B
179 183anti-parallel
Strand 7
B
165 171anti-parallel
Strand 8
B
155 160anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il