Analysis of interatomic Contacts of Structural Units in PDB entry:
1I9R


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 1I9R entry

There are 9 chains in PDB entry 1I9R (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ASN 119LEU 261
B
 ASN 119LEU 261
C
 ASN 119LEU 261
H
 GLN 1LYS 219
L
 ASP 1ARG 215
K
 GLN 1LYS 219
M
 ASP 1ARG 215
X
 GLN 1LYS 219
Y
 ASP 1ARG 215
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 1I9R. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
243 246Right-handed 310
Helix 2
2
B
243 246Right-handed 310
Helix 3
3
C
243 246Right-handed 310
Helix 4
4
H
28 32Right-handed 310
Helix 5
5
H
62 65Right-handed 310
Helix 6
6
H
87 91Right-handed 310
Helix 7
7
H
132 136Right-handed 310
Helix 8
8
H
161 163Right-handed 310
Helix 9
9
H
192 194Right-handed 310
Helix 10
10
H
206 209Right-handed 310
Helix 11
11
L
83 87Right-handed 310
Helix 12
12
L
125 130Right-handed alpha
Helix 13
13
L
187 192Right-handed alpha
Helix 14
14
K
28 32Right-handed 310
Helix 15
15
K
62 65Right-handed 310
Helix 16
16
K
74 76Right-handed 310
Helix 17
17
K
87 91Right-handed 310
Helix 18
18
K
132 136Right-handed 310
Helix 19
19
K
161 163Right-handed 310
Helix 20
20
K
192 194Right-handed 310
Helix 21
21
K
206 209Right-handed 310
Helix 22
22
M
83 87Right-handed 310
Helix 23
23
M
125 130Right-handed alpha
Helix 24
24
M
187 192Right-handed alpha
Helix 25
25
X
28 32Right-handed 310
Helix 26
26
X
62 65Right-handed 310
Helix 27
27
X
87 91Right-handed 310
Helix 28
28
X
132 136Right-handed 310
Helix 29
29
X
161 163Right-handed 310
Helix 30
30
X
192 194Right-handed 310
Helix 31
31
X
206 209Right-handed 310
Helix 32
32
Y
83 87Right-handed 310
Helix 33
33
Y
125 130Right-handed alpha
Helix 34
34
Y
187 192Right-handed alpha
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There are 29 sheets in PDB entry 1I9R. 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, AC,

There are 9 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
147 148first strand
Strand 2
A
123 129anti-parallel
Strand 3
A
139 141anti-parallel
Strand 4
A
123 129anti-parallel
Strand 5
A
255 260anti-parallel
Strand 6
A
167 179anti-parallel
Strand 7
A
219 225anti-parallel
Strand 8
A
167 179anti-parallel
Strand 9
A
228 231anti-parallel
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There are 5 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
153 156first strand
Strand 2
A
160 163anti-parallel
Strand 3
A
236 241anti-parallel
Strand 4
A
189 196anti-parallel
Strand 5
A
203 210anti-parallel
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There are 11 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
139 141first strand
Strand 2
B
123 129anti-parallel
Strand 3
B
147 148anti-parallel
Strand 4
B
123 129anti-parallel
Strand 5
B
255 260anti-parallel
Strand 6
B
167 179anti-parallel
Strand 7
B
219 225anti-parallel
Strand 8
B
167 179anti-parallel
Strand 9
B
219 225anti-parallel
Strand 10
B
167 179anti-parallel
Strand 11
B
228 231anti-parallel
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There are 5 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
153 156first strand
Strand 2
B
160 163anti-parallel
Strand 3
B
236 241anti-parallel
Strand 4
B
189 196anti-parallel
Strand 5
B
204 210anti-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
C
147 148first strand
Strand 2
C
123 129anti-parallel
Strand 3
C
139 141anti-parallel
Strand 4
C
123 129anti-parallel
Strand 5
C
255 260anti-parallel
Strand 6
C
167 179anti-parallel
Strand 7
C
228 231anti-parallel
Strand 8
C
167 179anti-parallel
Strand 9
C
219 225anti-parallel
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There are 5 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
153 156first strand
Strand 2
C
160 163anti-parallel
Strand 3
C
236 241anti-parallel
Strand 4
C
189 195anti-parallel
Strand 5
C
203 210anti-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
H
3 6first strand
Strand 2
H
18 25anti-parallel
Strand 3
H
78 83anti-parallel
Strand 4
H
70 73anti-parallel
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There are 8 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
10 12first strand
Strand 2
H
112 116parallel
Strand 3
H
92 100anti-parallel
Strand 4
H
104 108anti-parallel
Strand 5
H
92 100anti-parallel
Strand 6
H
34 39anti-parallel
Strand 7
H
45 51anti-parallel
Strand 8
H
58 60anti-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
H
125 129first strand
Strand 2
H
140 150anti-parallel
Strand 3
H
181 190anti-parallel
Strand 4
H
168 170anti-parallel
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There are 3 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
156 159first strand
Strand 2
H
199 205anti-parallel
Strand 3
H
210 216anti-parallel
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There are 6 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
10 13first strand
Strand 2
L
106 110parallel
Strand 3
L
89 94anti-parallel
Strand 4
L
37 42anti-parallel
Strand 5
L
49 53anti-parallel
Strand 6
L
57 58anti-parallel
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There are 3 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
19 24first strand
Strand 2
L
74 79anti-parallel
Strand 3
L
66 71anti-parallel
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There are 4 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
133 143first strand
Strand 2
L
118 122anti-parallel
Strand 3
L
177 186first strand
Strand 4
L
163 164anti-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
L
157 158first strand
Strand 2
L
149 154anti-parallel
Strand 3
L
195 201anti-parallel
Strand 4
L
209 214anti-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
K
3 6first strand
Strand 2
K
17 25anti-parallel
Strand 3
K
78 84anti-parallel
Strand 4
K
71 72anti-parallel
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There are 8 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
K
10 12first strand
Strand 2
K
112 116parallel
Strand 3
K
92 100anti-parallel
Strand 4
K
104 108anti-parallel
Strand 5
K
92 100anti-parallel
Strand 6
K
34 39anti-parallel
Strand 7
K
45 51anti-parallel
Strand 8
K
58 60anti-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
K
125 129first strand
Strand 2
K
140 150anti-parallel
Strand 3
K
181 190anti-parallel
Strand 4
K
168 170anti-parallel
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There are 3 strands in R sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
K
156 159first strand
Strand 2
K
199 205anti-parallel
Strand 3
K
210 216anti-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
M
10 13first strand
Strand 2
M
106 110parallel
Strand 3
M
89 94anti-parallel
Strand 4
M
37 42anti-parallel
Strand 5
M
49 53anti-parallel
Strand 6
M
57 58anti-parallel
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There are 3 strands in T sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
M
19 24first strand
Strand 2
M
74 79anti-parallel
Strand 3
M
68 71anti-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
M
118 122first strand
Strand 2
M
133 143anti-parallel
Strand 3
M
177 186anti-parallel
Strand 4
M
163 164anti-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
M
157 158first strand
Strand 2
M
149 154anti-parallel
Strand 3
M
195 201anti-parallel
Strand 4
M
209 214anti-parallel
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There are 4 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
3 6first strand
Strand 2
X
18 25anti-parallel
Strand 3
X
78 83anti-parallel
Strand 4
X
71 73anti-parallel
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There are 8 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
10 12first strand
Strand 2
X
112 116parallel
Strand 3
X
92 100anti-parallel
Strand 4
X
104 108anti-parallel
Strand 5
X
92 100anti-parallel
Strand 6
X
33 39anti-parallel
Strand 7
X
45 51anti-parallel
Strand 8
X
58 60anti-parallel
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There are 4 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
125 129first strand
Strand 2
X
140 150anti-parallel
Strand 3
X
181 190anti-parallel
Strand 4
X
168 170anti-parallel
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There are 3 strands in Z sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
156 159first strand
Strand 2
X
199 205anti-parallel
Strand 3
X
210 216anti-parallel
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There are 6 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Y
10 13first strand
Strand 2
Y
106 110anti-parallel
Strand 3
Y
89 94anti-parallel
Strand 4
Y
37 42anti-parallel
Strand 5
Y
49 53anti-parallel
Strand 6
Y
57 58anti-parallel
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There are 3 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Y
19 24first strand
Strand 2
Y
74 79anti-parallel
Strand 3
Y
68 71anti-parallel
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There are 4 strands in AC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Y
118 122first strand
Strand 2
Y
133 143anti-parallel
Strand 3
Y
177 186anti-parallel
Strand 4
Y
163 164anti-parallel
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