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


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 1IEC entry

There are 4 chains in PDB entry 1IEC (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 10LEU 131
A
 LEU 133ALA 256
B
 ASP 304LEU 431
B
 LEU 433ALA 556
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 20 helices in PDB entry 1IEC. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
29 33Right-handed 310
Helix 2
2
A
35 43Right-handed alpha
Helix 3
3
A
90 102Right-handed alpha
Helix 4
4
A
104 110Right-handed alpha
Helix 5
5
A
118 128Right-handed alpha
Helix 6
6
A
176 182Right-handed alpha
Helix 7
7
A
188 200Right-handed alpha
Helix 8
8
A
217 230Right-handed alpha
Helix 9
9
A
233 245Right-handed alpha
Helix 10
10
B
304 311Right-handed alpha
Helix 11
11
B
329 333Right-handed 310
Helix 12
12
B
335 343Right-handed alpha
Helix 13
13
B
390 402Right-handed alpha
Helix 14
14
B
404 410Right-handed alpha
Helix 15
15
B
418 428Right-handed alpha
Helix 16
16
B
476 483Right-handed alpha
Helix 17
17
B
488 500Right-handed alpha
Helix 18
18
B
517 529Right-handed alpha
Helix 19
19
B
533 545Right-handed alpha
Helix 20
20
B
546 550Right-handed 310
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There are 2 sheets in PDB entry 1IEC. Click on sheet of interest to get list of strands forming it: A, B,

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
158 160first strand
Strand 2
A
58 61parallel
Strand 3
A
64 78anti-parallel
Strand 4
A
81 88anti-parallel
Strand 5
A
14 22anti-parallel
Strand 6
A
172 174anti-parallel
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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
B
458 460first strand
Strand 2
B
358 361parallel
Strand 3
B
368 378anti-parallel
Strand 4
B
381 388anti-parallel
Strand 5
B
314 322anti-parallel
Strand 6
B
472 474anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il