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


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 3NAS entry

There are 2 chains in PDB entry 3NAS (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LEU 1GLU 223
B
 ALA 3SER 224
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 25 helices in PDB entry 3NAS. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
14 30Right-handed alpha
Helix 2
2
A
35 42Right-handed alpha
Helix 3
3
A
46 58Right-handed alpha
Helix 4
4
A
65 86Right-handed alpha
Helix 5
5
A
87 92Right-handed 310
Helix 6
6
A
95 106Right-handed alpha
Helix 7
7
A
118 126Right-handed alpha
Helix 8
8
A
149 159Right-handed alpha
Helix 9
9
A
161 163Right-handed 310
Helix 10
10
A
171 181Right-handed alpha
Helix 11
11
A
203 207Right-handed 310
Helix 12
12
A
208 222Right-handed alpha
Helix 13
13
B
15 31Right-handed alpha
Helix 14
14
B
35 42Right-handed alpha
Helix 15
15
B
48 59Right-handed alpha
Helix 16
16
B
65 84Right-handed alpha
Helix 17
17
B
85 87Right-handed 310
Helix 18
18
B
88 92Right-handed 310
Helix 19
19
B
95 106Right-handed alpha
Helix 20
20
B
118 126Right-handed alpha
Helix 21
21
B
128 132Right-handed 310
Helix 22
22
B
149 157Right-handed alpha
Helix 23
23
B
171 180Right-handed alpha
Helix 24
24
B
191 195Right-handed 310
Helix 25
25
B
208 224Right-handed alpha
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There are 2 sheets in PDB entry 3NAS. Click on sheet of interest to get list of strands forming it: A, B,

There are 6 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
134 135first strand
Strand 2
A
109 112parallel
Strand 3
A
3 6parallel
Strand 4
A
165 169parallel
Strand 5
A
184 187parallel
Strand 6
A
199 200parallel
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There are 6 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
134 135first strand
Strand 2
B
110 112parallel
Strand 3
B
4 6parallel
Strand 4
B
166 169parallel
Strand 5
B
184 188parallel
Strand 6
B
199 201parallel
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