Analysis of interatomic Contacts of Structural Units in PDB entry:
1A9N


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 1A9N entry

There are 6 chains in PDB entry 1A9N (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
Q
 C 0 U 23
R
 C 0 U 23
A
 VAL 2LYS 163
C
 VAL 2ALA 175
B
 ILE 6GLY 99
D
 ILE 6ARG 98
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 21 helices in PDB entry 1A9N. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
6 11Right-handed alpha
Helix 2
2
A
37 40Right-handed 310
Helix 3
3
A
83 86Right-handed alpha
Helix 4
4
A
103 111Right-handed 310
Helix 5
5
A
124 127Right-handed 310
Helix 6
6
A
131 138Right-handed alpha
Helix 7
7
A
152 160Right-handed alpha
Helix 8
8
C
6 11Right-handed alpha
Helix 9
9
C
37 40Right-handed 310
Helix 10
10
C
83 86Right-handed alpha
Helix 11
11
C
103 111Right-handed 310
Helix 12
12
C
124 127Right-handed 310
Helix 13
13
C
131 138Right-handed alpha
Helix 14
14
C
152 160Right-handed alpha
Helix 15
15
C
165 172Right-handed alpha
Helix 16
16
B
23 37Right-handed alpha
Helix 17
17
B
62 71Right-handed alpha
Helix 18
18
B
92 97Right-handed alpha
Helix 19
19
D
23 37Right-handed alpha
Helix 20
20
D
62 71Right-handed alpha
Helix 21
21
D
92 96Right-handed alpha
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There are 4 sheets in PDB entry 1A9N. Click on sheet of interest to get list of strands forming it: A, B, C, D,

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
14 16first strand
Strand 2
A
22 25anti-parallel
Strand 3
A
46 48parallel
Strand 4
A
68 70parallel
Strand 5
A
92 94parallel
Strand 6
A
117 119parallel
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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
C
14 16first strand
Strand 2
C
22 25anti-parallel
Strand 3
C
46 48parallel
Strand 4
C
68 70parallel
Strand 5
C
92 94parallel
Strand 6
C
117 119parallel
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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
B
83 86first strand
Strand 2
B
11 15anti-parallel
Strand 3
B
55 59anti-parallel
Strand 4
B
40 44anti-parallel
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There are 4 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
83 86first strand
Strand 2
D
11 15anti-parallel
Strand 3
D
55 59anti-parallel
Strand 4
D
40 44anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il