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


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 1EXN entry

There are 2 chains in PDB entry 1EXN (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ARG 20GLU 290
B
 ARG 20GLN 291
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 32 helices in PDB entry 1EXN. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
27 37Right-handed alpha
Helix 2
2
A
44 57Right-handed alpha
Helix 3
3
A
73 78Right-handed alpha
Helix 4
4
A
84 92Right-handed alpha
Helix 5
5
A
95 117Right-handed alpha
Helix 6
6
A
129 143Right-handed alpha
Helix 7
7
A
154 159Right-handed 310
Helix 8
8
A
177 184Right-handed 310
Helix 9
9
A
189 199Right-handed alpha
Helix 10
10
A
202 204Right-handed 310
Helix 11
11
A
214 224Right-handed alpha
Helix 12
12
A
227 233Right-handed alpha
Helix 13
13
A
241 248Right-handed alpha
Helix 14
14
A
250 260Right-handed alpha
Helix 15
15
A
262 273Right-handed alpha
Helix 16
16
A
275 288Right-handed alpha
Helix 17
17
B
27 38Right-handed alpha
Helix 18
18
B
44 57Right-handed alpha
Helix 19
19
B
73 78Right-handed alpha
Helix 20
20
B
84 91Right-handed alpha
Helix 21
21
B
95 117Right-handed alpha
Helix 22
22
B
129 143Right-handed alpha
Helix 23
23
B
154 159Right-handed 310
Helix 24
24
B
177 184Right-handed 310
Helix 25
25
B
189 199Right-handed alpha
Helix 26
26
B
202 204Right-handed 310
Helix 27
27
B
214 224Right-handed alpha
Helix 28
28
B
227 233Right-handed alpha
Helix 29
29
B
241 248Right-handed alpha
Helix 30
30
B
250 260Right-handed alpha
Helix 31
31
B
262 273Right-handed alpha
Helix 32
32
B
275 289Right-handed alpha
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There are 2 sheets in PDB entry 1EXN. 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
173 175first strand
Strand 2
A
164 168anti-parallel
Strand 3
A
147 150parallel
Strand 4
A
21 26parallel
Strand 5
A
60 66parallel
Strand 6
A
120 122parallel
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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
173 175first strand
Strand 2
B
164 168anti-parallel
Strand 3
B
146 150parallel
Strand 4
B
21 26parallel
Strand 5
B
60 69parallel
Strand 6
B
120 125parallel
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