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


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 4ETQ entry

There are 6 chains in PDB entry 4ETQ (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
H
 GLN 2ARG 220
L
 GLN 2GLU 213
A
 GLN 2GLY 221
B
 GLN 2GLU 213
X
 PRO 2GLU 236
C
 GLN 3ASP 194
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 30 helices in PDB entry 4ETQ. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
H
29 33Right-handed 310
Helix 2
2
H
63 66Right-handed 310
Helix 3
3
H
75 77Right-handed 310
Helix 4
4
H
88 92Right-handed 310
Helix 5
5
H
163 165Right-handed 310
Helix 6
6
H
207 210Right-handed 310
Helix 7
7
L
79 83Right-handed 310
Helix 8
8
L
121 126Right-handed alpha
Helix 9
9
L
183 188Right-handed alpha
Helix 10
10
A
29 33Right-handed 310
Helix 11
11
A
63 66Right-handed 310
Helix 12
12
A
75 77Right-handed 310
Helix 13
13
A
88 92Right-handed 310
Helix 14
14
A
163 165Right-handed 310
Helix 15
15
A
207 210Right-handed 310
Helix 16
16
B
79 83Right-handed 310
Helix 17
17
B
121 127Right-handed alpha
Helix 18
18
B
183 188Right-handed alpha
Helix 19
19
X
103 108Right-handed alpha
Helix 20
20
X
131 136Right-handed alpha
Helix 21
21
X
137 142Right-handed 310
Helix 22
22
X
155 160Right-handed 310
Helix 23
23
X
193 198Right-handed alpha
Helix 24
24
X
199 202Right-handed 310
Helix 25
25
C
103 108Right-handed alpha
Helix 26
26
C
128 136Right-handed alpha
Helix 27
27
C
137 142Right-handed 310
Helix 28
28
C
155 160Right-handed 310
Helix 29
29
C
193 197Right-handed alpha
Helix 30
30
C
198 202Right-handed 310
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There are 28 sheets in PDB entry 4ETQ. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB,

There are 4 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
4 7first strand
Strand 2
H
19 26anti-parallel
Strand 3
H
79 84anti-parallel
Strand 4
H
69 74anti-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
H
11 13first strand
Strand 2
H
114 118parallel
Strand 3
H
93 100anti-parallel
Strand 4
H
35 40anti-parallel
Strand 5
H
46 52anti-parallel
Strand 6
H
59 61anti-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
H
11 13first strand
Strand 2
H
114 118parallel
Strand 3
H
93 100anti-parallel
Strand 4
H
107 110anti-parallel
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There are 4 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
127 131first strand
Strand 2
H
142 152anti-parallel
Strand 3
H
181 191anti-parallel
Strand 4
H
170 172anti-parallel
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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
H
127 131first strand
Strand 2
H
142 152anti-parallel
Strand 3
H
181 191anti-parallel
Strand 4
H
176 178anti-parallel
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There are 3 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
158 161first strand
Strand 2
H
201 206anti-parallel
Strand 3
H
211 216anti-parallel
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There are 4 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
5 8first strand
Strand 2
L
19 26anti-parallel
Strand 3
L
70 76anti-parallel
Strand 4
L
62 67anti-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
L
11 14first strand
Strand 2
L
102 106parallel
Strand 3
L
84 90anti-parallel
Strand 4
L
33 38anti-parallel
Strand 5
L
45 49anti-parallel
Strand 6
L
53 54anti-parallel
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There are 4 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
11 14first strand
Strand 2
L
102 106parallel
Strand 3
L
84 90anti-parallel
Strand 4
L
97 98anti-parallel
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There are 4 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
114 118first strand
Strand 2
L
129 139anti-parallel
Strand 3
L
173 182anti-parallel
Strand 4
L
159 163anti-parallel
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There are 4 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
153 155first strand
Strand 2
L
145 150anti-parallel
Strand 3
L
191 197anti-parallel
Strand 4
L
205 210anti-parallel
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There are 4 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
4 7first strand
Strand 2
A
19 26anti-parallel
Strand 3
A
79 84anti-parallel
Strand 4
A
69 74anti-parallel
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There are 6 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
11 13first strand
Strand 2
A
114 118parallel
Strand 3
A
93 100anti-parallel
Strand 4
A
35 40anti-parallel
Strand 5
A
46 52anti-parallel
Strand 6
A
59 61anti-parallel
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There are 4 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
11 13first strand
Strand 2
A
114 118parallel
Strand 3
A
93 100anti-parallel
Strand 4
A
107 110anti-parallel
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There are 4 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
127 131first strand
Strand 2
A
142 152anti-parallel
Strand 3
A
181 191anti-parallel
Strand 4
A
170 172anti-parallel
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There are 4 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
127 131first strand
Strand 2
A
142 152anti-parallel
Strand 3
A
181 191anti-parallel
Strand 4
A
176 178anti-parallel
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There are 3 strands in Q sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
158 161first strand
Strand 2
A
201 206anti-parallel
Strand 3
A
211 216anti-parallel
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There are 4 strands in R sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
5 8first strand
Strand 2
B
19 26anti-parallel
Strand 3
B
70 76anti-parallel
Strand 4
B
62 67anti-parallel
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There are 6 strands in S sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
11 14first strand
Strand 2
B
102 106parallel
Strand 3
B
84 90anti-parallel
Strand 4
B
33 38anti-parallel
Strand 5
B
45 49anti-parallel
Strand 6
B
53 54anti-parallel
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There are 4 strands in T sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
11 14first strand
Strand 2
B
102 106parallel
Strand 3
B
84 90anti-parallel
Strand 4
B
97 98anti-parallel
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There are 4 strands in U sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
114 118first strand
Strand 2
B
129 139anti-parallel
Strand 3
B
173 182anti-parallel
Strand 4
B
159 163anti-parallel
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There are 4 strands in V sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
153 155first strand
Strand 2
B
145 150anti-parallel
Strand 3
B
191 197anti-parallel
Strand 4
B
205 210anti-parallel
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There are 2 strands in W sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
9 10first strand
Strand 2
X
81 82parallel
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There are 9 strands in X sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
16 17first strand
Strand 2
X
232 233parallel
Strand 3
X
167 172anti-parallel
Strand 4
X
179 192anti-parallel
Strand 5
X
114 124parallel
Strand 6
X
89 96anti-parallel
Strand 7
X
61 70anti-parallel
Strand 8
X
51 54anti-parallel
Strand 9
X
24 27anti-parallel
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There are 10 strands in Y sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
16 17first strand
Strand 2
X
232 233parallel
Strand 3
X
167 172anti-parallel
Strand 4
X
179 192anti-parallel
Strand 5
X
114 124parallel
Strand 6
X
89 96anti-parallel
Strand 7
X
61 70anti-parallel
Strand 8
X
43 48anti-parallel
Strand 9
X
32 38anti-parallel
Strand 10
X
146 149anti-parallel
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There are 2 strands in Z sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
9 10first strand
Strand 2
C
81 82parallel
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There are 9 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
16 17first strand
Strand 2
C
232 234parallel
Strand 3
C
166 172anti-parallel
Strand 4
C
179 192anti-parallel
Strand 5
C
114 124parallel
Strand 6
C
89 96anti-parallel
Strand 7
C
61 70anti-parallel
Strand 8
C
51 53anti-parallel
Strand 9
C
25 27anti-parallel
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There are 10 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
16 17first strand
Strand 2
C
232 234parallel
Strand 3
C
166 172anti-parallel
Strand 4
C
179 192anti-parallel
Strand 5
C
114 124parallel
Strand 6
C
89 96anti-parallel
Strand 7
C
61 70anti-parallel
Strand 8
C
43 48anti-parallel
Strand 9
C
32 38anti-parallel
Strand 10
C
146 149anti-parallel
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