Analysis of interatomic Contacts of Structural Units in PDB entry:
2IOA


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 2IOA entry

There are 2 chains in PDB entry 2IOA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 10LYS 618
B
 PHE 12LYS 618
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 41 helices in PDB entry 2IOA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
20 22Right-handed 310
Helix 2
2
A
58 72Right-handed alpha
Helix 3
3
A
80 87Right-handed 310
Helix 4
4
A
123 127Right-handed 310
Helix 5
5
A
205 210Right-handed 310
Helix 6
6
A
231 242Right-handed alpha
Helix 7
7
A
257 283Right-handed alpha
Helix 8
8
A
284 289Right-handed alpha
Helix 9
9
A
290 292Right-handed 310
Helix 10
10
A
294 296Right-handed 310
Helix 11
11
A
297 309Right-handed alpha
Helix 12
12
A
338 344Right-handed alpha
Helix 13
13
A
344 354Right-handed alpha
Helix 14
14
A
364 375Right-handed alpha
Helix 15
15
A
389 406Right-handed alpha
Helix 16
16
A
443 453Right-handed alpha
Helix 17
17
A
475 480Right-handed alpha
Helix 18
18
A
489 494Right-handed 310
Helix 19
19
A
497 499Right-handed 310
Helix 20
20
A
500 508Right-handed alpha
Helix 21
21
A
522 529Right-handed alpha
Helix 22
22
B
58 72Right-handed alpha
Helix 23
23
B
80 87Right-handed 310
Helix 24
24
B
94 96Right-handed 310
Helix 25
25
B
123 127Right-handed 310
Helix 26
26
B
205 210Right-handed 310
Helix 27
27
B
231 242Right-handed alpha
Helix 28
28
B
257 282Right-handed alpha
Helix 29
29
B
284 289Right-handed alpha
Helix 30
30
B
290 292Right-handed 310
Helix 31
31
B
297 308Right-handed alpha
Helix 32
32
B
338 344Right-handed alpha
Helix 33
33
B
344 354Right-handed alpha
Helix 34
34
B
364 375Right-handed alpha
Helix 35
35
B
389 405Right-handed alpha
Helix 36
36
B
443 453Right-handed alpha
Helix 37
37
B
475 480Right-handed alpha
Helix 38
38
B
489 494Right-handed 310
Helix 39
39
B
497 499Right-handed 310
Helix 40
40
B
500 508Right-handed alpha
Helix 41
41
B
522 529Right-handed alpha
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There are 17 sheets in PDB entry 2IOA. 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,

There are 2 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
15 19first strand
Strand 2
A
23 26anti-parallel
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There are 2 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
45 48first strand
Strand 2
A
51 55anti-parallel
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There are 3 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
73 74first strand
Strand 2
A
89 92anti-parallel
Strand 3
A
97 100anti-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
102 105first strand
Strand 2
A
185 190anti-parallel
Strand 3
A
117 120anti-parallel
Strand 4
A
131 138anti-parallel
Strand 5
A
142 146anti-parallel
Strand 6
A
163 169anti-parallel
Strand 7
A
174 177anti-parallel
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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
A
212 215first strand
Strand 2
A
251 256anti-parallel
Strand 3
A
614 617parallel
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There are 4 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
325 332first strand
Strand 2
A
314 322anti-parallel
Strand 3
A
579 588anti-parallel
Strand 4
A
575 576anti-parallel
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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
A
325 332first strand
Strand 2
A
314 322anti-parallel
Strand 3
A
579 588anti-parallel
Strand 4
A
591 600anti-parallel
Strand 5
A
610 612anti-parallel
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There are 4 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
409 414first strand
Strand 2
A
381 386parallel
Strand 3
A
437 440parallel
Strand 4
A
485 487parallel
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There are 5 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
517 518first strand
Strand 2
A
565 569anti-parallel
Strand 3
A
530 534anti-parallel
Strand 4
A
544 546anti-parallel
Strand 5
A
552 555anti-parallel
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There are 2 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
15 19first strand
Strand 2
B
23 26anti-parallel
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There are 2 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
45 48first strand
Strand 2
B
51 55anti-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
B
73 74first strand
Strand 2
B
89 92anti-parallel
Strand 3
B
97 100anti-parallel
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There are 6 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
102 105first strand
Strand 2
B
185 190anti-parallel
Strand 3
B
117 120anti-parallel
Strand 4
B
131 138anti-parallel
Strand 5
B
142 146anti-parallel
Strand 6
B
163 166anti-parallel
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There are 3 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
212 215first strand
Strand 2
B
251 256anti-parallel
Strand 3
B
614 617parallel
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There are 5 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
325 332first strand
Strand 2
B
314 322anti-parallel
Strand 3
B
580 588anti-parallel
Strand 4
B
591 600anti-parallel
Strand 5
B
610 612anti-parallel
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There are 4 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
409 414first strand
Strand 2
B
381 386parallel
Strand 3
B
437 440parallel
Strand 4
B
485 487parallel
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There are 5 strands in Q sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
517 518first strand
Strand 2
B
565 569anti-parallel
Strand 3
B
530 534anti-parallel
Strand 4
B
544 546anti-parallel
Strand 5
B
552 555anti-parallel
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