Analysis of interatomic Contacts of Structural Units in PDB entry:
4S1A


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 4S1A entry

There are 2 chains in PDB entry 4S1A (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 94LEU 287
B
 ALA 94LEU 287
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 20 helices in PDB entry 4S1A. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
98 103Right-handed alpha
Helix 2
2
A
104 118Right-handed alpha
Helix 3
3
A
140 147Right-handed alpha
Helix 4
4
A
154 165Right-handed alpha
Helix 5
5
A
180 185Right-handed alpha
Helix 6
6
A
186 189Right-handed 310
Helix 7
7
A
211 213Right-handed 310
Helix 8
8
A
214 229Right-handed alpha
Helix 9
9
A
257 273Right-handed alpha
Helix 10
10
A
281 285Right-handed 310
Helix 11
11
B
98 103Right-handed alpha
Helix 12
12
B
104 118Right-handed alpha
Helix 13
13
B
140 146Right-handed alpha
Helix 14
14
B
154 165Right-handed alpha
Helix 15
15
B
180 185Right-handed alpha
Helix 16
16
B
186 189Right-handed 310
Helix 17
17
B
211 213Right-handed 310
Helix 18
18
B
214 229Right-handed alpha
Helix 19
19
B
257 273Right-handed alpha
Helix 20
20
B
281 285Right-handed 310
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There are 4 sheets in PDB entry 4S1A. Click on sheet of interest to get list of strands forming it: A, B, C, D,

There are 5 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
96 97first strand
Strand 2
A
122 128parallel
Strand 3
A
168 174parallel
Strand 4
A
232 236parallel
Strand 5
A
278 279parallel
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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
191 192first strand
Strand 2
A
249 250anti-parallel
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There are 5 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
95 97first strand
Strand 2
B
122 128parallel
Strand 3
B
168 174parallel
Strand 4
B
232 236parallel
Strand 5
B
278 279parallel
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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
191 192first strand
Strand 2
B
249 250anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il