Analysis of interatomic Contacts of Structural Units in PDB entry:
3EC4


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 3EC4 entry

There are 2 chains in PDB entry 3EC4 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ASP 4THR 227
B
 ASP 4THR 227
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 3EC4. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
5 8Right-handed 310
Helix 2
2
A
9 17Right-handed alpha
Helix 3
3
A
19 23Right-handed 310
Helix 4
4
A
46 54Right-handed 310
Helix 5
5
A
104 106Right-handed 310
Helix 6
6
A
107 118Right-handed alpha
Helix 7
7
A
126 130Right-handed 310
Helix 8
8
A
166 169Right-handed 310
Helix 9
9
A
172 188Right-handed alpha
Helix 10
10
A
200 210Right-handed alpha
Helix 11
11
B
5 8Right-handed 310
Helix 12
12
B
9 17Right-handed alpha
Helix 13
13
B
19 23Right-handed 310
Helix 14
14
B
46 54Right-handed 310
Helix 15
15
B
104 106Right-handed 310
Helix 16
16
B
107 118Right-handed alpha
Helix 17
17
B
126 131Right-handed 310
Helix 18
18
B
166 169Right-handed 310
Helix 19
19
B
172 188Right-handed alpha
Helix 20
20
B
200 210Right-handed alpha
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There are 4 sheets in PDB entry 3EC4. Click on sheet of interest to get list of strands forming it: A, B, C, D,

There are 2 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
29 31first strand
Strand 2
A
40 42anti-parallel
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There are 8 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
60 65first strand
Strand 2
A
213 225anti-parallel
Strand 3
A
75 87anti-parallel
Strand 4
A
191 197anti-parallel
Strand 5
A
156 164parallel
Strand 6
A
141 148anti-parallel
Strand 7
A
133 138anti-parallel
Strand 8
A
101 102anti-parallel
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There are 2 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
29 31first strand
Strand 2
B
40 42anti-parallel
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There are 8 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
60 65first strand
Strand 2
B
213 225anti-parallel
Strand 3
B
75 87anti-parallel
Strand 4
B
191 197anti-parallel
Strand 5
B
156 164parallel
Strand 6
B
141 148anti-parallel
Strand 7
B
133 138anti-parallel
Strand 8
B
100 102anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il