Analysis of interatomic Contacts of Structural Units in PDB entry:
4A1O


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 4A1O entry

There are 2 chains in PDB entry 4A1O (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ASP 5HIS 523
B
 ARG 7HIS 523
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 50 helices in PDB entry 4A1O. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
22 33Right-handed alpha
Helix 2
2
A
40 49Right-handed alpha
Helix 3
3
A
57 62Right-handed alpha
Helix 4
4
A
75 84Right-handed alpha
Helix 5
5
A
88 99Right-handed alpha
Helix 6
6
A
112 119Right-handed alpha
Helix 7
7
A
122 129Right-handed alpha
Helix 8
8
A
132 144Right-handed alpha
Helix 9
9
A
153 155Right-handed 310
Helix 10
10
A
156 166Right-handed alpha
Helix 11
11
A
170 199Right-handed alpha
Helix 12
12
A
244 248Right-handed 310
Helix 13
13
A
257 273Right-handed alpha
Helix 14
14
A
296 308Right-handed alpha
Helix 15
15
A
308 313Right-handed alpha
Helix 16
16
A
324 332Right-handed alpha
Helix 17
17
A
347 353Right-handed alpha
Helix 18
18
A
390 394Right-handed 310
Helix 19
19
A
394 398Right-handed 310
Helix 20
20
A
407 421Right-handed alpha
Helix 21
21
A
446 459Right-handed alpha
Helix 22
22
A
460 463Right-handed 310
Helix 23
23
A
476 485Right-handed alpha
Helix 24
24
A
498 510Right-handed alpha
Helix 25
25
B
22 33Right-handed alpha
Helix 26
26
B
40 49Right-handed alpha
Helix 27
27
B
57 62Right-handed alpha
Helix 28
28
B
66 70Right-handed 310
Helix 29
29
B
75 84Right-handed alpha
Helix 30
30
B
88 99Right-handed alpha
Helix 31
31
B
112 117Right-handed alpha
Helix 32
32
B
118 120Right-handed 310
Helix 33
33
B
122 129Right-handed alpha
Helix 34
34
B
132 144Right-handed alpha
Helix 35
35
B
153 155Right-handed 310
Helix 36
36
B
156 166Right-handed alpha
Helix 37
37
B
170 199Right-handed alpha
Helix 38
38
B
244 248Right-handed 310
Helix 39
39
B
257 273Right-handed alpha
Helix 40
40
B
296 308Right-handed alpha
Helix 41
41
B
308 313Right-handed alpha
Helix 42
42
B
324 332Right-handed alpha
Helix 43
43
B
347 353Right-handed alpha
Helix 44
44
B
390 394Right-handed 310
Helix 45
45
B
394 398Right-handed 310
Helix 46
46
B
407 421Right-handed alpha
Helix 47
47
B
446 459Right-handed alpha
Helix 48
48
B
460 463Right-handed 310
Helix 49
49
B
476 485Right-handed alpha
Helix 50
50
B
498 510Right-handed alpha
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There are 7 sheets in PDB entry 4A1O. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, BA, BB, BC,

There are 5 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
55 56first strand
Strand 2
A
36 39parallel
Strand 3
A
12 17parallel
Strand 4
A
105 109parallel
Strand 5
A
149 151parallel
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There are 8 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
371 376first strand
Strand 2
A
379 384anti-parallel
Strand 3
B
233 237anti-parallel
Strand 4
B
212 222anti-parallel
Strand 5
A
212 222anti-parallel
Strand 6
A
233 237anti-parallel
Strand 7
B
379 384anti-parallel
Strand 8
B
371 376anti-parallel
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There are 6 strands in AC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
249 252first strand
Strand 2
A
359 362anti-parallel
Strand 3
A
336 341parallel
Strand 4
A
315 319parallel
Strand 5
A
277 283anti-parallel
Strand 6
A
286 293anti-parallel
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There are 6 strands in AD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
399 402first strand
Strand 2
A
512 515anti-parallel
Strand 3
A
489 492parallel
Strand 4
A
466 469parallel
Strand 5
A
429 433anti-parallel
Strand 6
A
436 441anti-parallel
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There are 5 strands in BA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
55 56first strand
Strand 2
B
36 39parallel
Strand 3
B
12 17parallel
Strand 4
B
105 109parallel
Strand 5
B
149 151parallel
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There are 6 strands in BB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
249 252first strand
Strand 2
B
359 362anti-parallel
Strand 3
B
336 341parallel
Strand 4
B
315 319parallel
Strand 5
B
277 283anti-parallel
Strand 6
B
286 293anti-parallel
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There are 6 strands in BC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
399 402first strand
Strand 2
B
512 515anti-parallel
Strand 3
B
489 492parallel
Strand 4
B
466 469parallel
Strand 5
B
429 433anti-parallel
Strand 6
B
436 441anti-parallel
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