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


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 1NAS entry

There is 1 chain in PDB entry 1NAS (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 3ASP 261
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 11 helices in PDB entry 1NAS. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
19 31Right-handed alpha
Helix 2
2
A
45 58Right-handed alpha
Helix 3
3
A
74 85Right-handed alpha
Helix 4
4
A
112 114Right-handed 310
Helix 5
5
A
118 128Right-handed alpha
Helix 6
6
A
130 142Right-handed alpha
Helix 7
7
A
159 161Right-handed 310
Helix 8
8
A
169 188Right-handed alpha
Helix 9
9
A
205 213Right-handed alpha
Helix 10
10
A
217 228Right-handed alpha
Helix 11
11
A
235 248Right-handed alpha
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There is 1 sheet ( A) in PDB entry 1NAS.

There are 7 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
63 68first strand
Strand 2
A
37 42parallel
Strand 3
A
9 13parallel
Strand 4
A
95 100parallel
Strand 5
A
150 157parallel
Strand 6
A
192 198parallel
Strand 7
A
255 258parallel
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