Analysis of interatomic Contacts of Structural Units in PDB entry:
1A1S


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 1A1S entry

There is 1 chain in PDB entry 1A1S (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 VAL 1LYS 313
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 13 helices in PDB entry 1A1S. 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 14Right-handed 310
Helix 2
2
A
17 36Right-handed alpha
Helix 3
3
A
57 69Right-handed alpha
Helix 4
4
A
90 100Right-handed alpha
Helix 5
5
A
111 120Right-handed alpha
Helix 6
6
A
135 149Right-handed alpha
Helix 7
7
A
165 177Right-handed alpha
Helix 8
8
A
193 205Right-handed alpha
Helix 9
9
A
216 219Right-handed alpha
Helix 10
10
A
243 250Right-handed alpha
Helix 11
11
A
254 259Right-handed alpha
Helix 12
12
A
280 283Right-handed alpha
Helix 13
13
A
290 310Right-handed alpha
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There are 2 sheets in PDB entry 1A1S. Click on sheet of interest to get list of strands forming it: A, B,

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
73 77first strand
Strand 2
A
47 52parallel
Strand 3
A
103 107parallel
Strand 4
A
124 129parallel
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There are 5 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
265 268first strand
Strand 2
A
225 228parallel
Strand 3
A
156 160parallel
Strand 4
A
180 184parallel
Strand 5
A
209 213parallel
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