Analysis of interatomic Contacts of Structural Units in PDB entry:
3R1I


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 3R1I entry

There are 2 chains in PDB entry 3R1I (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 2PRO 255
B
 MET 1PRO 255
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 31 helices in PDB entry 3R1I. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
2 8Right-handed 310
Helix 2
2
A
21 34Right-handed alpha
Helix 3
3
A
44 47Right-handed 310
Helix 4
4
A
48 58Right-handed alpha
Helix 5
5
A
71 87Right-handed alpha
Helix 6
6
A
103 107Right-handed 310
Helix 7
7
A
108 120Right-handed alpha
Helix 8
8
A
120 138Right-handed alpha
Helix 9
9
A
148 152Right-handed 310
Helix 10
10
A
160 182Right-handed alpha
Helix 11
11
A
201 206Right-handed 310
Helix 12
12
A
207 212Right-handed alpha
Helix 13
13
A
213 215Right-handed 310
Helix 14
14
A
222 225Right-handed 310
Helix 15
15
A
226 235Right-handed alpha
Helix 16
16
A
236 239Right-handed 310
Helix 17
17
B
2 8Right-handed 310
Helix 18
18
B
21 34Right-handed alpha
Helix 19
19
B
44 47Right-handed 310
Helix 20
20
B
48 58Right-handed alpha
Helix 21
21
B
71 87Right-handed alpha
Helix 22
22
B
103 107Right-handed 310
Helix 23
23
B
108 120Right-handed alpha
Helix 24
24
B
120 138Right-handed alpha
Helix 25
25
B
148 152Right-handed 310
Helix 26
26
B
160 182Right-handed alpha
Helix 27
27
B
207 212Right-handed alpha
Helix 28
28
B
213 215Right-handed 310
Helix 29
29
B
222 225Right-handed 310
Helix 30
30
B
226 235Right-handed alpha
Helix 31
31
B
236 239Right-handed 310
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There are 2 sheets in PDB entry 3R1I. Click on sheet of interest to get list of strands forming it: A, B,

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
63 66first strand
Strand 2
A
37 42parallel
Strand 3
A
13 17parallel
Strand 4
A
91 94parallel
Strand 5
A
141 146parallel
Strand 6
A
186 193parallel
Strand 7
A
245 248parallel
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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
63 66first strand
Strand 2
B
37 42parallel
Strand 3
B
13 16parallel
Strand 4
B
91 94parallel
Strand 5
B
141 146parallel
Strand 6
B
186 193parallel
Strand 7
B
245 248parallel
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