Analysis of interatomic Contacts of Structural Units in PDB entry:
4ECA


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 4ECA entry

There are 8 chains in PDB entry 4ECA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LEU 1GLY 11
A
 ILE 13TYR 326
B
 LEU 1GLY 11
B
 ILE 13TYR 326
C
 LEU 1GLY 11
C
 ILE 13TYR 326
D
 LEU 1GLY 11
D
 ILE 13TYR 326
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 52 helices in PDB entry 4ECA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
32 38Right-handed alpha
Helix 2
2
A
40 44Right-handed 310
Helix 3
3
A
58 60Right-handed 310
Helix 4
4
A
63 79Right-handed alpha
Helix 5
5
A
92 102Right-handed alpha
Helix 6
6
A
125 136Right-handed alpha
Helix 7
7
A
139 141Right-handed 310
Helix 8
8
A
198 200Right-handed 310
Helix 9
9
A
226 233Right-handed alpha
Helix 10
10
A
251 263Right-handed alpha
Helix 11
11
A
286 289Right-handed alpha
Helix 12
12
A
299 312Right-handed alpha
Helix 13
13
A
316 325Right-handed alpha
Helix 14
14
B
32 38Right-handed alpha
Helix 15
15
B
40 44Right-handed 310
Helix 16
16
B
58 60Right-handed 310
Helix 17
17
B
63 79Right-handed alpha
Helix 18
18
B
92 102Right-handed alpha
Helix 19
19
B
125 137Right-handed alpha
Helix 20
20
B
139 141Right-handed 310
Helix 21
21
B
198 200Right-handed 310
Helix 22
22
B
226 233Right-handed alpha
Helix 23
23
B
251 262Right-handed alpha
Helix 24
24
B
286 289Right-handed alpha
Helix 25
25
B
299 311Right-handed alpha
Helix 26
26
B
316 323Right-handed alpha
Helix 27
27
C
32 39Right-handed alpha
Helix 28
28
C
42 44Right-handed 310
Helix 29
29
C
58 60Right-handed 310
Helix 30
30
C
63 79Right-handed alpha
Helix 31
31
C
92 102Right-handed alpha
Helix 32
32
C
125 137Right-handed alpha
Helix 33
33
C
139 141Right-handed 310
Helix 34
34
C
198 200Right-handed 310
Helix 35
35
C
226 233Right-handed alpha
Helix 36
36
C
251 263Right-handed alpha
Helix 37
37
C
286 289Right-handed alpha
Helix 38
38
C
299 312Right-handed alpha
Helix 39
39
C
316 325Right-handed alpha
Helix 40
40
D
32 38Right-handed alpha
Helix 41
41
D
42 44Right-handed 310
Helix 42
42
D
58 60Right-handed 310
Helix 43
43
D
63 78Right-handed alpha
Helix 44
44
D
92 102Right-handed alpha
Helix 45
45
D
125 136Right-handed alpha
Helix 46
46
D
139 141Right-handed 310
Helix 47
47
D
198 200Right-handed 310
Helix 48
48
D
226 233Right-handed alpha
Helix 49
49
D
251 262Right-handed alpha
Helix 50
50
D
286 289Right-handed alpha
Helix 51
51
D
299 309Right-handed alpha
Helix 52
52
D
316 323Right-handed alpha
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There are 12 sheets in PDB entry 4ECA. Click on sheet of interest to get list of strands forming it: A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3,

There are 8 strands in A1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
47 56first strand
Strand 2
A
3 10parallel
Strand 3
A
82 86parallel
Strand 4
A
109 112parallel
Strand 5
A
147 150parallel
Strand 6
A
153 156anti-parallel
Strand 7
A
180 183anti-parallel
Strand 8
A
186 189anti-parallel
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There are 2 strands in A2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
160 162first strand
Strand 2
A
171 173anti-parallel
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There are 4 strands in A3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
214 218first strand
Strand 2
A
238 243parallel
Strand 3
A
266 271parallel
Strand 4
A
291 293parallel
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There are 8 strands in B1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
47 56first strand
Strand 2
B
3 10parallel
Strand 3
B
83 86parallel
Strand 4
B
109 112parallel
Strand 5
B
146 150parallel
Strand 6
B
153 156anti-parallel
Strand 7
B
180 183anti-parallel
Strand 8
B
186 189anti-parallel
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There are 2 strands in B2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
160 162first strand
Strand 2
B
171 173anti-parallel
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There are 4 strands in B3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
214 218first strand
Strand 2
B
238 243parallel
Strand 3
B
266 271parallel
Strand 4
B
292 293parallel
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There are 8 strands in C1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
47 56first strand
Strand 2
C
3 10parallel
Strand 3
C
83 86parallel
Strand 4
C
109 112parallel
Strand 5
C
147 150parallel
Strand 6
C
153 156anti-parallel
Strand 7
C
180 183anti-parallel
Strand 8
C
186 189anti-parallel
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There are 2 strands in C2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
160 162first strand
Strand 2
C
171 173anti-parallel
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There are 4 strands in C3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
214 218first strand
Strand 2
C
238 243parallel
Strand 3
C
266 271parallel
Strand 4
C
291 293parallel
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There are 8 strands in D1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
47 56first strand
Strand 2
D
3 10parallel
Strand 3
D
82 86parallel
Strand 4
D
109 112parallel
Strand 5
D
147 150parallel
Strand 6
D
153 156anti-parallel
Strand 7
D
180 183anti-parallel
Strand 8
D
186 189anti-parallel
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There are 2 strands in D2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
160 162first strand
Strand 2
D
171 173anti-parallel
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There are 4 strands in D3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
214 218first strand
Strand 2
D
238 243parallel
Strand 3
D
266 271parallel
Strand 4
D
291 293parallel
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