Analysis of interatomic Contacts of Structural Units in PDB entry:
1G20


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 1G20 entry

There are 8 chains in PDB entry 1G20 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 5GLU 480
B
 SER 2ARG 523
C
 SER 5GLU 480
D
 SER 2ARG 523
E
 MET 2PHE 271
F
 MET 2PHE 271
G
 MET 2PHE 271
H
 MET 2PHE 271
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 are163 helices in PDB entry 1G20. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
9 18Right-handed alpha
Helix 2
2
A
21 30Right-handed alpha
Helix 3
3
A
41 45Right-handed 310
Helix 4
4
A
62 68Right-handed alpha
Helix 5
5
A
86 92Right-handed alpha
Helix 6
6
A
119 126Right-handed alpha
Helix 7
7
A
127 142Right-handed alpha
Helix 8
8
A
153 160Right-handed alpha
Helix 9
9
A
162 175Right-handed alpha
Helix 10
10
A
191 206Right-handed alpha
Helix 11
11
A
207 211Right-handed 310
Helix 12
12
A
232 234Right-handed 310
Helix 13
13
A
235 245Right-handed alpha
Helix 14
14
A
258 265Right-handed alpha
Helix 15
15
A
266 268Right-handed 310
Helix 16
16
A
275 291Right-handed alpha
Helix 17
17
A
301 314Right-handed alpha
Helix 18
18
A
317 347Right-handed alpha
Helix 19
19
A
358 363Right-handed alpha
Helix 20
20
A
363 369Right-handed alpha
Helix 21
21
A
383 394Right-handed alpha
Helix 22
22
A
405 417Right-handed alpha
Helix 23
23
A
424 434Right-handed alpha
Helix 24
24
A
443 447Right-handed 310
Helix 25
25
A
451 468Right-handed alpha
Helix 26
26
A
469 474Right-handed 310
Helix 27
27
B
10 15Right-handed alpha
Helix 28
28
B
17 32Right-handed alpha
Helix 29
29
B
36 47Right-handed alpha
Helix 30
30
B
49 58Right-handed alpha
Helix 31
31
B
70 80Right-handed alpha
Helix 32
32
B
93 108Right-handed alpha
Helix 33
33
B
119 126Right-handed alpha
Helix 34
34
B
127 143Right-handed alpha
Helix 35
35
B
152 158Right-handed alpha
Helix 36
36
B
161 172Right-handed alpha
Helix 37
37
B
192 210Right-handed alpha
Helix 38
38
B
212 216Right-handed 310
Helix 39
39
B
233 248Right-handed alpha
Helix 40
40
B
259 263Right-handed 310
Helix 41
41
B
277 283Right-handed alpha
Helix 42
42
B
284 287Right-handed 310
Helix 43
43
B
294 297Right-handed 310
Helix 44
44
B
298 308Right-handed alpha
Helix 45
45
B
320 337Right-handed alpha
Helix 46
46
B
341 363Right-handed alpha
Helix 47
47
B
372 386Right-handed alpha
Helix 48
48
B
399 412Right-handed alpha
Helix 49
49
B
413 417Right-handed 310
Helix 50
50
B
426 437Right-handed alpha
Helix 51
51
B
445 447Right-handed 310
Helix 52
52
B
448 459Right-handed alpha
Helix 53
53
B
460 463Right-handed 310
Helix 54
54
B
478 482Right-handed 310
Helix 55
55
B
485 509Right-handed alpha
Helix 56
56
B
515 519Right-handed 310
Helix 57
57
C
7 18Right-handed alpha
Helix 58
58
C
21 30Right-handed alpha
Helix 59
59
C
41 45Right-handed 310
Helix 60
60
C
62 68Right-handed alpha
Helix 61
61
C
86 93Right-handed alpha
Helix 62
62
C
119 125Right-handed alpha
Helix 63
63
C
127 142Right-handed alpha
Helix 64
64
C
153 160Right-handed alpha
Helix 65
65
C
162 175Right-handed alpha
Helix 66
66
C
191 206Right-handed alpha
Helix 67
67
C
233 245Right-handed alpha
Helix 68
68
C
258 265Right-handed alpha
Helix 69
69
C
266 268Right-handed 310
Helix 70
70
C
275 291Right-handed alpha
Helix 71
71
C
301 314Right-handed alpha
Helix 72
72
C
317 331Right-handed alpha
Helix 73
73
C
331 347Right-handed alpha
Helix 74
74
C
358 363Right-handed alpha
Helix 75
75
C
363 369Right-handed alpha
Helix 76
76
C
383 394Right-handed alpha
Helix 77
77
C
405 417Right-handed alpha
Helix 78
78
C
424 434Right-handed alpha
Helix 79
79
C
443 447Right-handed 310
Helix 80
80
C
451 468Right-handed alpha
Helix 81
81
C
469 474Right-handed 310
Helix 82
82
D
10 15Right-handed alpha
Helix 83
83
D
17 32Right-handed alpha
Helix 84
84
D
36 47Right-handed alpha
Helix 85
85
D
49 58Right-handed alpha
Helix 86
86
D
70 81Right-handed alpha
Helix 87
87
D
92 108Right-handed alpha
Helix 88
88
D
119 126Right-handed alpha
Helix 89
89
D
127 143Right-handed alpha
Helix 90
90
D
152 158Right-handed alpha
Helix 91
91
D
161 172Right-handed alpha
Helix 92
92
D
192 210Right-handed alpha
Helix 93
93
D
212 216Right-handed 310
Helix 94
94
D
233 248Right-handed alpha
Helix 95
95
D
277 284Right-handed alpha
Helix 96
96
D
285 287Right-handed 310
Helix 97
97
D
294 297Right-handed 310
Helix 98
98
D
298 308Right-handed alpha
Helix 99
99
D
321 337Right-handed alpha
Helix 100
100
D
341 363Right-handed alpha
Helix 101
101
D
372 386Right-handed alpha
Helix 102
102
D
399 411Right-handed alpha
Helix 103
103
D
412 417Right-handed 310
Helix 104
104
D
426 437Right-handed alpha
Helix 105
105
D
445 447Right-handed 310
Helix 106
106
D
448 459Right-handed alpha
Helix 107
107
D
460 463Right-handed 310
Helix 108
108
D
478 482Right-handed 310
Helix 109
109
D
485 509Right-handed alpha
Helix 110
110
D
515 519Right-handed 310
Helix 111
111
E
10 13Right-handed 310
Helix 112
112
E
14 29Right-handed alpha
Helix 113
113
E
56 64Right-handed alpha
Helix 114
114
E
66 70Right-handed 310
Helix 115
115
E
71 76Right-handed alpha
Helix 116
116
E
79 83Right-handed 310
Helix 117
117
E
97 112Right-handed alpha
Helix 118
118
E
133 140Right-handed 310
Helix 119
119
E
154 175Right-handed alpha
Helix 120
120
E
192 204Right-handed alpha
Helix 121
121
E
214 223Right-handed alpha
Helix 122
122
E
226 231Right-handed alpha
Helix 123
123
E
234 250Right-handed alpha
Helix 124
124
E
260 269Right-handed alpha
Helix 125
125
F
14 29Right-handed alpha
Helix 126
126
F
56 65Right-handed alpha
Helix 127
127
F
66 70Right-handed 310
Helix 128
128
F
71 76Right-handed alpha
Helix 129
129
F
80 82Right-handed 310
Helix 130
130
F
97 112Right-handed alpha
Helix 131
131
F
133 140Right-handed 310
Helix 132
132
F
154 173Right-handed alpha
Helix 133
133
F
191 204Right-handed alpha
Helix 134
134
F
214 223Right-handed alpha
Helix 135
135
F
226 231Right-handed alpha
Helix 136
136
F
234 250Right-handed alpha
Helix 137
137
F
260 270Right-handed alpha
Helix 138
138
G
14 29Right-handed alpha
Helix 139
139
G
56 64Right-handed alpha
Helix 140
140
G
66 70Right-handed 310
Helix 141
141
G
71 76Right-handed alpha
Helix 142
142
G
80 82Right-handed 310
Helix 143
143
G
97 113Right-handed alpha
Helix 144
144
G
133 140Right-handed 310
Helix 145
145
G
154 175Right-handed alpha
Helix 146
146
G
191 204Right-handed alpha
Helix 147
147
G
214 223Right-handed alpha
Helix 148
148
G
226 231Right-handed alpha
Helix 149
149
G
234 250Right-handed alpha
Helix 150
150
G
260 270Right-handed alpha
Helix 151
151
H
14 30Right-handed alpha
Helix 152
152
H
56 64Right-handed alpha
Helix 153
153
H
66 70Right-handed 310
Helix 154
154
H
71 76Right-handed alpha
Helix 155
155
H
80 82Right-handed 310
Helix 156
156
H
97 112Right-handed alpha
Helix 157
157
H
133 140Right-handed 310
Helix 158
158
H
154 173Right-handed alpha
Helix 159
159
H
192 204Right-handed alpha
Helix 160
160
H
215 223Right-handed alpha
Helix 161
161
H
226 231Right-handed alpha
Helix 162
162
H
234 250Right-handed alpha
Helix 163
163
H
260 271Right-handed alpha
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There are 16 sheets in PDB entry 1G20. 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,

There are 6 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
32 34first strand
Strand 2
A
399 402anti-parallel
Strand 3
A
373 379parallel
Strand 4
A
350 353parallel
Strand 5
A
420 423parallel
Strand 6
A
438 440parallel
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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
178 181first strand
Strand 2
A
148 152parallel
Strand 3
A
79 83parallel
Strand 4
A
114 115parallel
Strand 5
B
63 64anti-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
248 254first strand
Strand 2
A
222 228parallel
Strand 3
A
270 273parallel
Strand 4
A
294 296parallel
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There are 3 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
114 115first strand
Strand 2
B
85 90parallel
Strand 3
B
146 151parallel
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There are 3 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
251 253first strand
Strand 2
B
224 227parallel
Strand 3
B
289 292parallel
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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
B
420 423first strand
Strand 2
B
389 395parallel
Strand 3
B
366 370parallel
Strand 4
B
441 444parallel
Strand 5
B
466 468parallel
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There are 6 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
32 34first strand
Strand 2
C
399 402anti-parallel
Strand 3
C
373 379parallel
Strand 4
C
350 353parallel
Strand 5
C
420 423parallel
Strand 6
C
438 440parallel
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There are 5 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
178 181first strand
Strand 2
C
148 152parallel
Strand 3
C
79 83parallel
Strand 4
C
114 115parallel
Strand 5
D
63 64anti-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
C
248 254first strand
Strand 2
C
222 228parallel
Strand 3
C
270 273parallel
Strand 4
C
294 296parallel
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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
D
114 115first strand
Strand 2
D
85 90parallel
Strand 3
D
146 151parallel
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There are 3 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
251 253first strand
Strand 2
D
224 227parallel
Strand 3
D
289 292parallel
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There are 5 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
420 423first strand
Strand 2
D
389 395parallel
Strand 3
D
366 370parallel
Strand 4
D
441 444parallel
Strand 5
D
466 468parallel
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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
E
84 87first strand
Strand 2
E
33 38parallel
Strand 3
E
121 126parallel
Strand 4
E
3 8parallel
Strand 5
E
146 151parallel
Strand 6
E
178 185parallel
Strand 7
E
207 211parallel
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There are 8 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
77 78first strand
Strand 2
F
84 87anti-parallel
Strand 3
F
33 38parallel
Strand 4
F
121 126parallel
Strand 5
F
3 9parallel
Strand 6
F
146 151parallel
Strand 7
F
178 185parallel
Strand 8
F
207 211parallel
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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
G
77 78first strand
Strand 2
G
84 87anti-parallel
Strand 3
G
33 38parallel
Strand 4
G
121 126parallel
Strand 5
G
3 9parallel
Strand 6
G
146 151parallel
Strand 7
G
178 184parallel
Strand 8
G
207 210parallel
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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
H
77 78first strand
Strand 2
H
84 87anti-parallel
Strand 3
H
33 38parallel
Strand 4
H
121 126parallel
Strand 5
H
3 9parallel
Strand 6
H
146 151parallel
Strand 7
H
178 185parallel
Strand 8
H
207 211parallel
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