Analysis of interatomic Contacts of Structural Units in PDB entry:
1EK2


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 1EK2 entry

There are 2 chains in PDB entry 1EK2 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ARG 4GLU 544
B
 ARG 4GLU 544
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 55 helices in PDB entry 1EK2. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
50 56Right-handed alpha
Helix 2
2
A
93 99Right-handed alpha
Helix 3
3
A
102 116Right-handed alpha
Helix 4
4
A
133 144Right-handed alpha
Helix 5
5
A
145 147Right-handed 310
Helix 6
6
A
163 174Right-handed alpha
Helix 7
7
A
176 178Right-handed 310
Helix 8
8
A
189 197Right-handed alpha
Helix 9
9
A
208 216Right-handed alpha
Helix 10
10
A
268 273Right-handed 310
Helix 11
11
A
274 282Right-handed alpha
Helix 12
12
A
303 306Right-handed 310
Helix 13
13
A
307 322Right-handed alpha
Helix 14
14
A
333 346Right-handed alpha
Helix 15
15
A
370 376Right-handed alpha
Helix 16
16
A
379 387Right-handed alpha
Helix 17
17
A
389 397Right-handed alpha
Helix 18
18
A
398 407Right-handed alpha
Helix 19
19
A
420 425Right-handed alpha
Helix 20
20
A
442 457Right-handed alpha
Helix 21
21
A
458 463Right-handed alpha
Helix 22
22
A
467 476Right-handed alpha
Helix 23
23
A
477 480Right-handed 310
Helix 24
24
A
499 503Right-handed 310
Helix 25
25
A
505 509Right-handed 310
Helix 26
26
A
524 529Right-handed alpha
Helix 27
27
A
529 543Right-handed alpha
Helix 28
28
B
18 30Right-handed alpha
Helix 29
29
B
36 41Right-handed 310
Helix 30
30
B
49 54Right-handed alpha
Helix 31
31
B
59 77Right-handed alpha
Helix 32
32
B
88 98Right-handed alpha
Helix 33
33
B
102 116Right-handed alpha
Helix 34
34
B
133 144Right-handed alpha
Helix 35
35
B
145 147Right-handed 310
Helix 36
36
B
163 174Right-handed alpha
Helix 37
37
B
190 197Right-handed alpha
Helix 38
38
B
208 216Right-handed alpha
Helix 39
39
B
268 273Right-handed 310
Helix 40
40
B
274 282Right-handed alpha
Helix 41
41
B
303 306Right-handed 310
Helix 42
42
B
307 322Right-handed alpha
Helix 43
43
B
333 346Right-handed alpha
Helix 44
44
B
370 376Right-handed alpha
Helix 45
45
B
379 387Right-handed alpha
Helix 46
46
B
389 397Right-handed alpha
Helix 47
47
B
398 407Right-handed alpha
Helix 48
48
B
442 457Right-handed alpha
Helix 49
49
B
458 463Right-handed alpha
Helix 50
50
B
467 476Right-handed alpha
Helix 51
51
B
477 480Right-handed 310
Helix 52
52
B
499 503Right-handed 310
Helix 53
53
B
505 509Right-handed 310
Helix 54
54
B
524 529Right-handed alpha
Helix 55
55
B
529 543Right-handed alpha
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There are 8 sheets in PDB entry 1EK2. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

There are 5 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
149 150first strand
Strand 2
A
118 121parallel
Strand 3
A
5 8parallel
Strand 4
A
180 183parallel
Strand 5
A
199 201parallel
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There are 2 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
15 16first strand
Strand 2
A
100 101anti-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
A
239 241first strand
Strand 2
A
247 249anti-parallel
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There are 6 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
285 289first strand
Strand 2
A
258 262parallel
Strand 3
A
327 332parallel
Strand 4
A
350 356parallel
Strand 5
A
487 492parallel
Strand 6
A
514 518parallel
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There are 4 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
149 152first strand
Strand 2
B
119 123parallel
Strand 3
B
6 8parallel
Strand 4
B
181 183parallel
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There are 2 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
15 16first strand
Strand 2
B
100 101anti-parallel
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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
239 241first strand
Strand 2
B
247 249anti-parallel
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There are 6 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
285 289first strand
Strand 2
B
258 262parallel
Strand 3
B
327 332parallel
Strand 4
B
350 356parallel
Strand 5
B
487 492parallel
Strand 6
B
514 518parallel
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