Analysis of interatomic Contacts of Structural Units in PDB entry:
3EN1


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 3EN1 entry

There are 2 chains in PDB entry 3EN1 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 TRP 15SER 440
B
 ALA 8PHE 187
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 25 helices in PDB entry 3EN1. 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 23Right-handed alpha
Helix 2
2
A
33 37Right-handed 310
Helix 3
3
A
38 49Right-handed alpha
Helix 4
4
A
50 53Right-handed 310
Helix 5
5
A
61 63Right-handed 310
Helix 6
6
A
134 139Right-handed alpha
Helix 7
7
A
171 177Right-handed alpha
Helix 8
8
A
179 188Right-handed alpha
Helix 9
9
A
208 219Right-handed alpha
Helix 10
10
A
219 224Right-handed alpha
Helix 11
11
A
228 235Right-handed alpha
Helix 12
12
A
270 287Right-handed alpha
Helix 13
13
A
288 299Right-handed alpha
Helix 14
14
A
300 306Right-handed alpha
Helix 15
15
A
351 366Right-handed alpha
Helix 16
16
A
372 387Right-handed alpha
Helix 17
17
A
388 389Right-handed 310
Helix 18
18
A
390 394Right-handed 310
Helix 19
19
A
424 439Right-handed alpha
Helix 20
20
B
9 13Right-handed 310
Helix 21
21
B
19 39Right-handed alpha
Helix 22
22
B
41 48Right-handed alpha
Helix 23
23
B
64 71Right-handed 310
Helix 24
24
B
84 95Right-handed alpha
Helix 25
25
B
100 104Right-handed 310
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There are 6 sheets in PDB entry 3EN1. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F,

There are 3 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
24 25first strand
Strand 2
A
30 31anti-parallel
Strand 3
A
397 398anti-parallel
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There are 3 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
55 59first strand
Strand 2
A
160 164anti-parallel
Strand 3
A
153 157anti-parallel
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There are 4 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
89 93first strand
Strand 2
A
77 83anti-parallel
Strand 3
A
68 74anti-parallel
Strand 4
A
108 110anti-parallel
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There are 3 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
113 115first strand
Strand 2
A
122 124anti-parallel
Strand 3
A
129 131anti-parallel
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There are 9 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
194 205first strand
Strand 2
A
338 347anti-parallel
Strand 3
A
326 332anti-parallel
Strand 4
A
318 320anti-parallel
Strand 5
A
311 314anti-parallel
Strand 6
A
262 266anti-parallel
Strand 7
A
251 255anti-parallel
Strand 8
A
416 418anti-parallel
Strand 9
A
406 407anti-parallel
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There are 6 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
79 83first strand
Strand 2
B
49 58anti-parallel
Strand 3
B
164 173parallel
Strand 4
B
143 157anti-parallel
Strand 5
B
126 139anti-parallel
Strand 6
B
108 120anti-parallel
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