Analysis of interatomic Contacts of Structural Units in PDB entry:
1A2O


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 1A2O entry

There are 2 chains in PDB entry 1A2O (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MET 1ILE 347
B
 MET 1ILE 347
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 27 helices in PDB entry 1A2O. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
13 25Right-handed alpha
Helix 2
2
A
38 48Right-handed alpha
Helix 3
3
A
64 73Right-handed alpha
Helix 4
4
A
87 99Right-handed alpha
Helix 5
5
A
116 132Right-handed alpha
Helix 6
6
A
135 138Right-handed 310
Helix 7
7
A
167 175Right-handed alpha
Helix 8
8
A
195 206Right-handed alpha
Helix 9
9
A
260 270Right-handed alpha
Helix 10
10
A
272 274Right-handed 310
Helix 11
11
A
288 297Right-handed alpha
Helix 12
12
A
306 308Right-handed 310
Helix 13
13
A
313 321Right-handed alpha
Helix 14
14
A
330 341Right-handed alpha
Helix 15
15
B
13 23Right-handed alpha
Helix 16
16
B
38 48Right-handed alpha
Helix 17
17
B
64 74Right-handed alpha
Helix 18
18
B
88 98Right-handed alpha
Helix 19
19
B
116 132Right-handed alpha
Helix 20
20
B
135 138Right-handed alpha
Helix 21
21
B
167 175Right-handed alpha
Helix 22
22
B
195 204Right-handed alpha
Helix 23
23
B
260 270Right-handed alpha
Helix 24
24
B
272 274Right-handed 310
Helix 25
25
B
288 296Right-handed alpha
Helix 26
26
B
313 321Right-handed alpha
Helix 27
27
B
330 342Right-handed alpha
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There are 6 sheets in PDB entry 1A2O. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F,

There are 5 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
103 106first strand
Strand 2
A
78 83parallel
Strand 3
A
52 56parallel
Strand 4
A
4 9parallel
Strand 5
A
29 35parallel
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There are 7 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
326 328first strand
Strand 2
A
300 304parallel
Strand 3
A
275 279parallel
Strand 4
A
158 163parallel
Strand 5
A
184 189parallel
Strand 6
A
224 227parallel
Strand 7
A
210 213parallel
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There are 2 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
233 239first strand
Strand 2
A
242 248anti-parallel
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There are 5 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
103 106first strand
Strand 2
B
78 83parallel
Strand 3
B
52 55parallel
Strand 4
B
4 9parallel
Strand 5
B
29 35parallel
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There are 7 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
326 328first strand
Strand 2
B
300 304parallel
Strand 3
B
275 279parallel
Strand 4
B
158 163parallel
Strand 5
B
184 189parallel
Strand 6
B
224 227parallel
Strand 7
B
210 213parallel
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There are 2 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
233 239first strand
Strand 2
B
242 248anti-parallel
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