Analysis of interatomic Contacts of Structural Units in PDB entry:
1I4W


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 1I4W entry

There is 1 chain in PDB entry 1I4W (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 PRO 4PRO 325
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 18 helices in PDB entry 1I4W. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
16 20Right-handed 310
Helix 2
2
A
25 37Right-handed alpha
Helix 3
3
A
38 41Right-handed 310
Helix 4
4
A
58 69Right-handed alpha
Helix 5
5
A
79 90Right-handed alpha
Helix 6
6
A
104 112Right-handed alpha
Helix 7
7
A
142 157Right-handed alpha
Helix 8
8
A
158 164Right-handed 310
Helix 9
9
A
174 182Right-handed alpha
Helix 10
10
A
190 199Right-handed alpha
Helix 11
11
A
209 216Right-handed 310
Helix 12
12
A
217 225Right-handed alpha
Helix 13
13
A
230 233Right-handed 310
Helix 14
14
A
255 268Right-handed alpha
Helix 15
15
A
276 281Right-handed 310
Helix 16
16
A
284 290Right-handed alpha
Helix 17
17
A
302 306Right-handed 310
Helix 18
18
A
307 320Right-handed alpha
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There is 1 sheet ( A) in PDB entry 1I4W.

There are 8 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
96 98first strand
Strand 2
A
72 76parallel
Strand 3
A
49 53parallel
Strand 4
A
128 137parallel
Strand 5
A
165 173parallel
Strand 6
A
242 249anti-parallel
Strand 7
A
200 207anti-parallel
Strand 8
A
227 228parallel
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