Analysis of interatomic Contacts of Structural Units in PDB entry:
1G21


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 1G21 entry

There are 8 chains in PDB entry 1G21 (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 2GLU 270
F
 MET 2MET 269
G
 MET 2GLU 270
H
 MET 2GLU 270
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 are168 helices in PDB entry 1G21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
7 17Right-handed alpha
Helix 2
2
A
21 29Right-handed alpha
Helix 3
3
A
62 68Right-handed alpha
Helix 4
4
A
87 92Right-handed alpha
Helix 5
5
A
119 125Right-handed alpha
Helix 6
6
A
127 142Right-handed alpha
Helix 7
7
A
153 160Right-handed alpha
Helix 8
8
A
162 173Right-handed alpha
Helix 9
9
A
191 206Right-handed alpha
Helix 10
10
A
207 210Right-handed 310
Helix 11
11
A
233 244Right-handed alpha
Helix 12
12
A
258 264Right-handed alpha
Helix 13
13
A
265 268Right-handed 310
Helix 14
14
A
275 280Right-handed alpha
Helix 15
15
A
279 289Right-handed alpha
Helix 16
16
A
301 315Right-handed alpha
Helix 17
17
A
317 347Right-handed alpha
Helix 18
18
A
358 363Right-handed alpha
Helix 19
19
A
363 369Right-handed alpha
Helix 20
20
A
383 388Right-handed alpha
Helix 21
21
A
389 394Right-handed alpha
Helix 22
22
A
405 417Right-handed alpha
Helix 23
23
A
424 433Right-handed alpha
Helix 24
24
A
443 447Right-handed 310
Helix 25
25
A
451 468Right-handed alpha
Helix 26
26
A
470 475Right-handed 310
Helix 27
27
B
4 8Right-handed 310
Helix 28
28
B
10 15Right-handed alpha
Helix 29
29
B
17 32Right-handed alpha
Helix 30
30
B
36 48Right-handed alpha
Helix 31
31
B
49 58Right-handed alpha
Helix 32
32
B
70 81Right-handed alpha
Helix 33
33
B
93 108Right-handed alpha
Helix 34
34
B
119 126Right-handed alpha
Helix 35
35
B
127 142Right-handed alpha
Helix 36
36
B
152 159Right-handed alpha
Helix 37
37
B
161 172Right-handed alpha
Helix 38
38
B
192 208Right-handed alpha
Helix 39
39
B
210 214Right-handed 310
Helix 40
40
B
233 247Right-handed alpha
Helix 41
41
B
259 263Right-handed 310
Helix 42
42
B
277 283Right-handed alpha
Helix 43
43
B
284 287Right-handed 310
Helix 44
44
B
294 297Right-handed 310
Helix 45
45
B
298 308Right-handed alpha
Helix 46
46
B
322 337Right-handed alpha
Helix 47
47
B
341 363Right-handed alpha
Helix 48
48
B
372 387Right-handed alpha
Helix 49
49
B
399 412Right-handed alpha
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
485 509Right-handed alpha
Helix 55
55
B
515 519Right-handed 310
Helix 56
56
C
7 17Right-handed alpha
Helix 57
57
C
18 20Right-handed 310
Helix 58
58
C
21 29Right-handed alpha
Helix 59
59
C
62 68Right-handed alpha
Helix 60
60
C
88 92Right-handed 310
Helix 61
61
C
119 126Right-handed alpha
Helix 62
62
C
128 142Right-handed alpha
Helix 63
63
C
153 160Right-handed alpha
Helix 64
64
C
162 173Right-handed alpha
Helix 65
65
C
191 206Right-handed alpha
Helix 66
66
C
207 210Right-handed 310
Helix 67
67
C
233 245Right-handed alpha
Helix 68
68
C
258 264Right-handed alpha
Helix 69
69
C
265 268Right-handed 310
Helix 70
70
C
279 289Right-handed alpha
Helix 71
71
C
301 315Right-handed alpha
Helix 72
72
C
317 347Right-handed alpha
Helix 73
73
C
358 363Right-handed alpha
Helix 74
74
C
363 369Right-handed alpha
Helix 75
75
C
383 388Right-handed alpha
Helix 76
76
C
389 394Right-handed alpha
Helix 77
77
C
405 417Right-handed alpha
Helix 78
78
C
424 433Right-handed alpha
Helix 79
79
C
443 447Right-handed 310
Helix 80
80
C
451 468Right-handed alpha
Helix 81
81
C
470 475Right-handed 310
Helix 82
82
D
4 8Right-handed 310
Helix 83
83
D
10 15Right-handed alpha
Helix 84
84
D
17 32Right-handed alpha
Helix 85
85
D
36 48Right-handed alpha
Helix 86
86
D
49 58Right-handed alpha
Helix 87
87
D
70 81Right-handed alpha
Helix 88
88
D
93 108Right-handed alpha
Helix 89
89
D
119 126Right-handed alpha
Helix 90
90
D
127 142Right-handed alpha
Helix 91
91
D
152 158Right-handed alpha
Helix 92
92
D
161 172Right-handed alpha
Helix 93
93
D
192 208Right-handed alpha
Helix 94
94
D
211 216Right-handed 310
Helix 95
95
D
233 247Right-handed alpha
Helix 96
96
D
259 263Right-handed 310
Helix 97
97
D
277 284Right-handed alpha
Helix 98
98
D
285 287Right-handed 310
Helix 99
99
D
294 297Right-handed 310
Helix 100
100
D
298 308Right-handed alpha
Helix 101
101
D
322 337Right-handed alpha
Helix 102
102
D
341 363Right-handed alpha
Helix 103
103
D
372 387Right-handed alpha
Helix 104
104
D
399 413Right-handed alpha
Helix 105
105
D
414 417Right-handed 310
Helix 106
106
D
426 437Right-handed alpha
Helix 107
107
D
445 447Right-handed 310
Helix 108
108
D
448 459Right-handed alpha
Helix 109
109
D
460 463Right-handed 310
Helix 110
110
D
478 482Right-handed 310
Helix 111
111
D
485 509Right-handed alpha
Helix 112
112
D
515 519Right-handed 310
Helix 113
113
E
14 29Right-handed alpha
Helix 114
114
E
45 50Right-handed alpha
Helix 115
115
E
56 64Right-handed alpha
Helix 116
116
E
66 70Right-handed 310
Helix 117
117
E
71 76Right-handed alpha
Helix 118
118
E
80 82Right-handed 310
Helix 119
119
E
97 112Right-handed alpha
Helix 120
120
E
132 140Right-handed 310
Helix 121
121
E
154 175Right-handed alpha
Helix 122
122
E
191 204Right-handed alpha
Helix 123
123
E
215 222Right-handed alpha
Helix 124
124
E
226 231Right-handed alpha
Helix 125
125
E
234 250Right-handed alpha
Helix 126
126
E
260 270Right-handed alpha
Helix 127
127
F
14 29Right-handed alpha
Helix 128
128
F
45 50Right-handed alpha
Helix 129
129
F
56 64Right-handed alpha
Helix 130
130
F
66 70Right-handed 310
Helix 131
131
F
71 76Right-handed alpha
Helix 132
132
F
80 82Right-handed 310
Helix 133
133
F
97 112Right-handed alpha
Helix 134
134
F
133 140Right-handed 310
Helix 135
135
F
154 175Right-handed alpha
Helix 136
136
F
191 204Right-handed alpha
Helix 137
137
F
215 223Right-handed alpha
Helix 138
138
F
226 231Right-handed alpha
Helix 139
139
F
234 250Right-handed alpha
Helix 140
140
F
260 269Right-handed alpha
Helix 141
141
G
14 29Right-handed alpha
Helix 142
142
G
45 50Right-handed alpha
Helix 143
143
G
56 64Right-handed alpha
Helix 144
144
G
66 70Right-handed 310
Helix 145
145
G
71 76Right-handed alpha
Helix 146
146
G
80 82Right-handed 310
Helix 147
147
G
97 112Right-handed alpha
Helix 148
148
G
133 140Right-handed 310
Helix 149
149
G
154 175Right-handed alpha
Helix 150
150
G
191 204Right-handed alpha
Helix 151
151
G
215 223Right-handed alpha
Helix 152
152
G
226 231Right-handed alpha
Helix 153
153
G
234 250Right-handed alpha
Helix 154
154
G
260 270Right-handed alpha
Helix 155
155
H
14 29Right-handed alpha
Helix 156
156
H
45 50Right-handed alpha
Helix 157
157
H
56 64Right-handed alpha
Helix 158
158
H
66 70Right-handed 310
Helix 159
159
H
71 76Right-handed alpha
Helix 160
160
H
80 82Right-handed 310
Helix 161
161
H
97 112Right-handed alpha
Helix 162
162
H
133 140Right-handed 310
Helix 163
163
H
154 175Right-handed alpha
Helix 164
164
H
191 204Right-handed alpha
Helix 165
165
H
215 222Right-handed alpha
Helix 166
166
H
226 231Right-handed alpha
Helix 167
167
H
234 250Right-handed alpha
Helix 168
168
H
260 270Right-handed alpha
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There are 18 sheets in PDB entry 1G21. 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,

There are 5 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
33 34first strand
Strand 2
A
399 402anti-parallel
Strand 3
A
374 379parallel
Strand 4
A
351 353parallel
Strand 5
A
420 422parallel
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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 179first 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 253first strand
Strand 2
A
222 226parallel
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 117first strand
Strand 2
B
85 91parallel
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 5 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
34 35first strand
Strand 2
C
398 402anti-parallel
Strand 3
C
374 379parallel
Strand 4
C
351 353parallel
Strand 5
C
420 422parallel
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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 179first strand
Strand 2
C
148 151parallel
Strand 3
C
79 82parallel
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 253first strand
Strand 2
C
222 226parallel
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 117first strand
Strand 2
D
85 91parallel
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 8 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
77 78first strand
Strand 2
E
84 87anti-parallel
Strand 3
E
33 38parallel
Strand 4
E
121 126parallel
Strand 5
E
3 8parallel
Strand 6
E
146 151parallel
Strand 7
E
178 185parallel
Strand 8
E
207 211parallel
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There are 7 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 7parallel
Strand 6
F
146 147parallel
Strand 7
F
178 179parallel
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There are 3 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
150 151first strand
Strand 2
F
181 185parallel
Strand 3
F
206 211parallel
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There are 7 strands in P 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 7parallel
Strand 6
G
146 147parallel
Strand 7
G
178 179parallel
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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
G
150 151first strand
Strand 2
G
182 185parallel
Strand 3
G
207 211parallel
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There are 8 strands in R 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 37parallel
Strand 4
H
121 125parallel
Strand 5
H
3 7parallel
Strand 6
H
146 151parallel
Strand 7
H
178 185parallel
Strand 8
H
207 211parallel
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