Analysis of interatomic Contacts of Structural Units in PDB entry:
3I9S


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 3I9S entry

There are 4 chains in PDB entry 3I9S (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 2LEU 162
B
 GLY 0SER 161
C
 MSE 1SER 161
D
 VAL 3LEU 162
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 33 helices in PDB entry 3I9S. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
9 15Right-handed 310
Helix 2
2
A
16 29Right-handed alpha
Helix 3
3
A
30 32Right-handed 310
Helix 4
4
A
34 45Right-handed alpha
Helix 5
5
A
76 80Right-handed 310
Helix 6
6
A
92 95Right-handed 310
Helix 7
7
A
98 114Right-handed alpha
Helix 8
8
A
127 137Right-handed alpha
Helix 9
9
A
152 161Right-handed alpha
Helix 10
10
B
9 15Right-handed 310
Helix 11
11
B
16 29Right-handed alpha
Helix 12
12
B
30 32Right-handed 310
Helix 13
13
B
34 45Right-handed alpha
Helix 14
14
B
92 95Right-handed 310
Helix 15
15
B
98 114Right-handed alpha
Helix 16
16
B
127 137Right-handed alpha
Helix 17
17
B
152 161Right-handed alpha
Helix 18
18
C
9 15Right-handed 310
Helix 19
19
C
16 29Right-handed alpha
Helix 20
20
C
30 32Right-handed 310
Helix 21
21
C
34 45Right-handed alpha
Helix 22
22
C
92 95Right-handed 310
Helix 23
23
C
98 114Right-handed alpha
Helix 24
24
C
127 137Right-handed alpha
Helix 25
25
C
152 161Right-handed alpha
Helix 26
26
D
9 15Right-handed 310
Helix 27
27
D
16 29Right-handed alpha
Helix 28
28
D
30 32Right-handed 310
Helix 29
29
D
34 45Right-handed alpha
Helix 30
30
D
92 95Right-handed 310
Helix 31
31
D
98 114Right-handed alpha
Helix 32
32
D
127 137Right-handed alpha
Helix 33
33
D
152 161Right-handed alpha
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There are 4 sheets in PDB entry 3I9S. Click on sheet of interest to get list of strands forming it: A, B, C, D,

There are 7 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
4 7first strand
Strand 2
A
54 60anti-parallel
Strand 3
A
63 73anti-parallel
Strand 4
A
81 90anti-parallel
Strand 5
A
116 124parallel
Strand 6
B
145 151anti-parallel
Strand 7
A
140 141anti-parallel
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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
B
4 8first strand
Strand 2
B
54 60anti-parallel
Strand 3
B
63 73anti-parallel
Strand 4
B
81 90anti-parallel
Strand 5
B
116 124parallel
Strand 6
A
145 151anti-parallel
Strand 7
B
140 141anti-parallel
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There are 7 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
4 8first strand
Strand 2
C
54 60anti-parallel
Strand 3
C
63 73anti-parallel
Strand 4
C
81 90anti-parallel
Strand 5
C
116 124parallel
Strand 6
D
145 151anti-parallel
Strand 7
C
140 141anti-parallel
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There are 7 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
4 7first strand
Strand 2
D
54 60anti-parallel
Strand 3
D
63 73anti-parallel
Strand 4
D
81 90anti-parallel
Strand 5
D
116 124parallel
Strand 6
C
145 151anti-parallel
Strand 7
D
140 141anti-parallel
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