Analysis of interatomic Contacts of Structural Units in PDB entry:
3I23


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 3I23 entry

There are 2 chains in PDB entry 3I23 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MSE 1GLU 348
B
 MSE 1GLU 348
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 3I23. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
11 17Right-handed alpha
Helix 2
2
A
18 23Right-handed alpha
Helix 3
3
A
39 48Right-handed alpha
Helix 4
4
A
57 62Right-handed alpha
Helix 5
5
A
74 76Right-handed 310
Helix 6
6
A
77 88Right-handed alpha
Helix 7
7
A
101 115Right-handed alpha
Helix 8
8
A
123 127Right-handed 310
Helix 9
9
A
128 141Right-handed alpha
Helix 10
10
A
166 169Right-handed 310
Helix 11
11
A
170 175Right-handed alpha
Helix 12
12
A
175 188Right-handed alpha
Helix 13
13
A
253 259Right-handed alpha
Helix 14
14
A
273 277Right-handed 310
Helix 15
15
A
302 315Right-handed alpha
Helix 16
16
A
321 335Right-handed alpha
Helix 17
17
B
13 18Right-handed alpha
Helix 18
18
B
18 23Right-handed alpha
Helix 19
19
B
39 48Right-handed alpha
Helix 20
20
B
56 63Right-handed alpha
Helix 21
21
B
74 76Right-handed 310
Helix 22
22
B
77 88Right-handed alpha
Helix 23
23
B
101 116Right-handed alpha
Helix 24
24
B
123 127Right-handed 310
Helix 25
25
B
128 141Right-handed alpha
Helix 26
26
B
166 169Right-handed 310
Helix 27
27
B
170 175Right-handed alpha
Helix 28
28
B
175 188Right-handed alpha
Helix 29
29
B
253 259Right-handed alpha
Helix 30
30
B
273 277Right-handed 310
Helix 31
31
B
302 313Right-handed alpha
Helix 32
32
B
321 335Right-handed alpha
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There are 5 sheets in PDB entry 3I23. Click on sheet of interest to get list of strands forming it: A, B, C, D, E,

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
52 54first strand
Strand 2
A
28 34parallel
Strand 3
A
3 8parallel
Strand 4
A
68 71parallel
Strand 5
A
91 94parallel
Strand 6
A
119 121parallel
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There are 8 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
197 198first strand
Strand 2
A
209 216anti-parallel
Strand 3
A
220 226anti-parallel
Strand 4
A
146 152parallel
Strand 5
A
237 241anti-parallel
Strand 6
A
244 248anti-parallel
Strand 7
A
278 283anti-parallel
Strand 8
A
289 294anti-parallel
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There are 4 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
197 198first strand
Strand 2
A
209 216anti-parallel
Strand 3
A
192 195anti-parallel
Strand 4
A
342 345anti-parallel
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There are 6 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
52 54first strand
Strand 2
B
28 34parallel
Strand 3
B
3 8parallel
Strand 4
B
68 71parallel
Strand 5
B
91 94parallel
Strand 6
B
119 121parallel
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There are 9 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
289 294first strand
Strand 2
B
278 283anti-parallel
Strand 3
B
244 248anti-parallel
Strand 4
B
237 241anti-parallel
Strand 5
B
146 152anti-parallel
Strand 6
B
220 227parallel
Strand 7
B
209 216anti-parallel
Strand 8
B
192 198anti-parallel
Strand 9
B
342 345anti-parallel
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