Analysis of interatomic Contacts of Structural Units in PDB entry:
3W21


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 3W21 entry

There are 2 chains in PDB entry 3W21 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MSE 1ASP 273
B
 MSE 1ASP 273
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 17 helices in PDB entry 3W21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
23 32Right-handed alpha
Helix 2
2
A
47 54Right-handed alpha
Helix 3
3
A
55 58Right-handed 310
Helix 4
4
A
77 83Right-handed alpha
Helix 5
5
A
85 108Right-handed alpha
Helix 6
6
A
110 121Right-handed alpha
Helix 7
7
A
202 215Right-handed alpha
Helix 8
8
A
219 225Right-handed 310
Helix 9
9
B
22 32Right-handed alpha
Helix 10
10
B
44 46Right-handed 310
Helix 11
11
B
47 53Right-handed alpha
Helix 12
12
B
77 82Right-handed alpha
Helix 13
13
B
83 85Right-handed 310
Helix 14
14
B
86 108Right-handed alpha
Helix 15
15
B
110 121Right-handed alpha
Helix 16
16
B
202 217Right-handed alpha
Helix 17
17
B
219 223Right-handed 310
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There are 8 sheets in PDB entry 3W21. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

There are 8 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
17 22first strand
Strand 2
A
4 10anti-parallel
Strand 3
A
37 41anti-parallel
Strand 4
A
236 241anti-parallel
Strand 5
A
178 185anti-parallel
Strand 6
A
255 265anti-parallel
Strand 7
A
268 272anti-parallel
Strand 8
A
123 124parallel
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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
A
17 22first strand
Strand 2
A
4 10anti-parallel
Strand 3
A
37 41anti-parallel
Strand 4
A
236 241anti-parallel
Strand 5
A
178 185anti-parallel
Strand 6
A
255 265anti-parallel
Strand 7
A
139 143anti-parallel
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There are 2 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
126 127first strand
Strand 2
A
133 134anti-parallel
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There are 3 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
227 230first strand
Strand 2
A
193 196anti-parallel
Strand 3
A
246 248anti-parallel
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There are 8 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
17 21first strand
Strand 2
B
5 10anti-parallel
Strand 3
B
37 41anti-parallel
Strand 4
B
236 241anti-parallel
Strand 5
B
178 185anti-parallel
Strand 6
B
255 265anti-parallel
Strand 7
B
268 272anti-parallel
Strand 8
B
123 124parallel
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There are 7 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
17 21first strand
Strand 2
B
5 10anti-parallel
Strand 3
B
37 41anti-parallel
Strand 4
B
236 241anti-parallel
Strand 5
B
178 185anti-parallel
Strand 6
B
255 265anti-parallel
Strand 7
B
139 143anti-parallel
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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
126 127first strand
Strand 2
B
133 134anti-parallel
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There are 3 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
227 230first strand
Strand 2
B
193 196anti-parallel
Strand 3
B
246 248anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il