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


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 3USU entry

There are 6 chains in PDB entry 3USU (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 THR 1ASN 256
B
 THR 1ALA 242
C
 THR 1ASN 256
D
 THR 1ALA 242
E
 THR 1ASN 256
F
 THR 1ILE 87
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 34 helices in PDB entry 3USU. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
105 109Right-handed 310
Helix 2
2
A
118 122Right-handed 310
Helix 3
3
A
133 137Right-handed 310
Helix 4
4
A
200 204Right-handed 310
Helix 5
5
A
248 254Right-handed alpha
Helix 6
6
B
105 109Right-handed 310
Helix 7
7
B
118 122Right-handed 310
Helix 8
8
B
133 137Right-handed 310
Helix 9
9
B
200 205Right-handed alpha
Helix 10
10
C
105 109Right-handed 310
Helix 11
11
C
118 122Right-handed 310
Helix 12
12
C
133 137Right-handed 310
Helix 13
13
C
175 177Right-handed 310
Helix 14
14
C
248 255Right-handed alpha
Helix 15
15
D
105 109Right-handed 310
Helix 16
16
D
118 122Right-handed 310
Helix 17
17
D
200 204Right-handed 310
Helix 18
18
E
105 109Right-handed 310
Helix 19
19
E
118 122Right-handed 310
Helix 20
20
E
133 137Right-handed 310
Helix 21
21
E
200 205Right-handed alpha
Helix 22
22
E
248 254Right-handed alpha
Helix 23
30
F
105 109Right-handed 310
Helix 24
31
F
118 122Right-handed 310
Helix 25
32
F
133 137Right-handed 310
Helix 26
33
F
175 177Right-handed 310
Helix 27
34
F
200 205Right-handed alpha
Helix 28
23
G
105 109Right-handed 310
Helix 29
24
G
118 122Right-handed 310
Helix 30
25
G
200 204Right-handed 310
Helix 31
26
G
248 256Right-handed alpha
Helix 32
27
H
105 109Right-handed 310
Helix 33
28
H
118 122Right-handed 310
Helix 34
29
H
200 205Right-handed alpha
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There are 28 sheets in PDB entry 3USU. 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 8 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
26 27first strand
Strand 2
A
33 34anti-parallel
Strand 3
A
228 239anti-parallel
Strand 4
A
2 9anti-parallel
Strand 5
D
2 9anti-parallel
Strand 6
D
228 239anti-parallel
Strand 7
D
33 34anti-parallel
Strand 8
D
26 27anti-parallel
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There are 12 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
191 198first strand
Strand 2
A
179 186anti-parallel
Strand 3
A
166 174anti-parallel
Strand 4
A
70 78anti-parallel
Strand 5
A
228 239anti-parallel
Strand 6
A
2 9anti-parallel
Strand 7
D
2 9anti-parallel
Strand 8
D
228 239anti-parallel
Strand 9
D
70 78anti-parallel
Strand 10
D
166 174anti-parallel
Strand 11
D
179 186anti-parallel
Strand 12
D
191 198anti-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
19 23first strand
Strand 2
A
49 54anti-parallel
Strand 3
A
208 217anti-parallel
Strand 4
A
58 59anti-parallel
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There are 7 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
19 23first strand
Strand 2
A
49 54anti-parallel
Strand 3
A
208 217anti-parallel
Strand 4
A
89 97anti-parallel
Strand 5
A
124 129anti-parallel
Strand 6
A
143 148anti-parallel
Strand 7
A
155 158anti-parallel
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There are 8 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
26 27first strand
Strand 2
B
33 34anti-parallel
Strand 3
B
228 239anti-parallel
Strand 4
B
2 9anti-parallel
Strand 5
C
2 9anti-parallel
Strand 6
C
228 239anti-parallel
Strand 7
C
33 34anti-parallel
Strand 8
C
26 27anti-parallel
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There are 12 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
191 198first strand
Strand 2
B
179 186anti-parallel
Strand 3
B
167 174anti-parallel
Strand 4
B
70 78anti-parallel
Strand 5
B
228 239anti-parallel
Strand 6
B
2 9anti-parallel
Strand 7
C
2 9anti-parallel
Strand 8
C
228 239anti-parallel
Strand 9
C
70 78anti-parallel
Strand 10
C
167 174anti-parallel
Strand 11
C
179 186anti-parallel
Strand 12
C
191 198anti-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
B
19 23first strand
Strand 2
B
49 54anti-parallel
Strand 3
B
208 217anti-parallel
Strand 4
B
58 59anti-parallel
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There are 7 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
19 23first strand
Strand 2
B
49 54anti-parallel
Strand 3
B
208 217anti-parallel
Strand 4
B
89 97anti-parallel
Strand 5
B
124 129anti-parallel
Strand 6
B
143 148anti-parallel
Strand 7
B
155 158anti-parallel
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There are 2 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
61 62first strand
Strand 2
B
67 68anti-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
C
19 23first strand
Strand 2
C
49 54anti-parallel
Strand 3
C
208 217anti-parallel
Strand 4
C
58 59anti-parallel
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There are 7 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
19 23first strand
Strand 2
C
49 54anti-parallel
Strand 3
C
208 217anti-parallel
Strand 4
C
89 97anti-parallel
Strand 5
C
124 129anti-parallel
Strand 6
C
143 148anti-parallel
Strand 7
C
155 158anti-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
D
19 23first strand
Strand 2
D
49 54anti-parallel
Strand 3
D
208 217anti-parallel
Strand 4
D
58 59anti-parallel
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There are 7 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
19 23first strand
Strand 2
D
49 54anti-parallel
Strand 3
D
208 217anti-parallel
Strand 4
D
89 96anti-parallel
Strand 5
D
124 129anti-parallel
Strand 6
D
143 148anti-parallel
Strand 7
D
155 158anti-parallel
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There are 2 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
61 62first strand
Strand 2
D
67 68anti-parallel
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There are 8 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
26 27first strand
Strand 2
E
33 34anti-parallel
Strand 3
E
228 239anti-parallel
Strand 4
E
2 9anti-parallel
Strand 5
H
2 9anti-parallel
Strand 6
H
228 239anti-parallel
Strand 7
H
33 34anti-parallel
Strand 8
H
26 27anti-parallel
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There are 12 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
191 198first strand
Strand 2
E
179 186anti-parallel
Strand 3
E
167 174anti-parallel
Strand 4
E
70 78anti-parallel
Strand 5
E
228 239anti-parallel
Strand 6
E
2 9anti-parallel
Strand 7
H
2 9anti-parallel
Strand 8
H
228 239anti-parallel
Strand 9
H
70 78anti-parallel
Strand 10
H
166 174anti-parallel
Strand 11
H
179 186anti-parallel
Strand 12
H
191 198anti-parallel
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There are 4 strands in Q sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
19 22first strand
Strand 2
E
49 54anti-parallel
Strand 3
E
208 217anti-parallel
Strand 4
E
58 59anti-parallel
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There are 7 strands in R sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
19 22first strand
Strand 2
E
49 54anti-parallel
Strand 3
E
208 217anti-parallel
Strand 4
E
89 96anti-parallel
Strand 5
E
124 129anti-parallel
Strand 6
E
143 148anti-parallel
Strand 7
E
155 158anti-parallel
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There are 2 strands in S sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
61 62first strand
Strand 2
E
67 68anti-parallel
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There are 8 strands in T sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
G
26 27first strand
Strand 2
G
33 34anti-parallel
Strand 3
G
228 239anti-parallel
Strand 4
G
2 9anti-parallel
Strand 5
F
2 9anti-parallel
Strand 6
F
228 239anti-parallel
Strand 7
F
33 34anti-parallel
Strand 8
F
26 27anti-parallel
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There are 12 strands in U sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
G
192 198first strand
Strand 2
G
179 185anti-parallel
Strand 3
G
166 174anti-parallel
Strand 4
G
70 78anti-parallel
Strand 5
G
228 239anti-parallel
Strand 6
G
2 9anti-parallel
Strand 7
F
2 9anti-parallel
Strand 8
F
228 239anti-parallel
Strand 9
F
70 78anti-parallel
Strand 10
F
167 174anti-parallel
Strand 11
F
179 186anti-parallel
Strand 12
F
191 198anti-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
G
19 23first strand
Strand 2
G
49 54anti-parallel
Strand 3
G
208 217anti-parallel
Strand 4
G
58 59anti-parallel
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There are 7 strands in W sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
G
19 23first strand
Strand 2
G
49 54anti-parallel
Strand 3
G
208 217anti-parallel
Strand 4
G
89 96anti-parallel
Strand 5
G
124 129anti-parallel
Strand 6
G
143 148anti-parallel
Strand 7
G
155 158anti-parallel
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There are 4 strands in X sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
19 23first strand
Strand 2
H
49 54anti-parallel
Strand 3
H
208 217anti-parallel
Strand 4
H
58 59anti-parallel
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There are 7 strands in Y sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
19 23first strand
Strand 2
H
49 54anti-parallel
Strand 3
H
208 217anti-parallel
Strand 4
H
89 97anti-parallel
Strand 5
H
124 129anti-parallel
Strand 6
H
143 148anti-parallel
Strand 7
H
155 158anti-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
H
61 62first strand
Strand 2
H
67 68anti-parallel
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There are 4 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
19 23first strand
Strand 2
F
49 54anti-parallel
Strand 3
F
208 217anti-parallel
Strand 4
F
58 59anti-parallel
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There are 7 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
19 23first strand
Strand 2
F
49 54anti-parallel
Strand 3
F
208 217anti-parallel
Strand 4
F
89 97anti-parallel
Strand 5
F
124 129anti-parallel
Strand 6
F
143 148anti-parallel
Strand 7
F
155 158anti-parallel
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