Analysis of interatomic Contacts of Structural Units in PDB entry:
3O21


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 3O21 entry

There are 4 chains in PDB entry 3O21 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 PHE 2PHE 380
B
 PHE 2PHE 380
C
 PHE 2PHE 380
D
 ASN 4PHE 380
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 48 helices in PDB entry 3O21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
16 32Right-handed alpha
Helix 2
2
A
54 67Right-handed alpha
Helix 3
3
A
81 93Right-handed alpha
Helix 4
4
A
117 129Right-handed alpha
Helix 5
5
A
143 156Right-handed alpha
Helix 6
6
A
171 183Right-handed alpha
Helix 7
7
A
194 209Right-handed alpha
Helix 8
8
A
223 227Right-handed 310
Helix 9
9
A
229 235Right-handed alpha
Helix 10
10
A
249 260Right-handed alpha
Helix 11
11
A
276 299Right-handed alpha
Helix 12
12
A
323 332Right-handed alpha
Helix 13
13
B
16 32Right-handed alpha
Helix 14
14
B
54 69Right-handed alpha
Helix 15
15
B
81 92Right-handed alpha
Helix 16
16
B
117 129Right-handed alpha
Helix 17
17
B
143 156Right-handed alpha
Helix 18
18
B
171 184Right-handed alpha
Helix 19
19
B
194 209Right-handed alpha
Helix 20
20
B
223 227Right-handed 310
Helix 21
21
B
229 235Right-handed alpha
Helix 22
22
B
249 260Right-handed alpha
Helix 23
23
B
276 299Right-handed alpha
Helix 24
24
B
322 333Right-handed alpha
Helix 25
25
C
16 32Right-handed alpha
Helix 26
26
C
54 69Right-handed alpha
Helix 27
27
C
81 93Right-handed alpha
Helix 28
28
C
117 129Right-handed alpha
Helix 29
29
C
143 157Right-handed alpha
Helix 30
30
C
170 183Right-handed alpha
Helix 31
31
C
194 209Right-handed alpha
Helix 32
32
C
223 227Right-handed 310
Helix 33
33
C
229 234Right-handed alpha
Helix 34
34
C
249 260Right-handed alpha
Helix 35
35
C
276 299Right-handed alpha
Helix 36
36
C
321 332Right-handed alpha
Helix 37
37
D
16 33Right-handed alpha
Helix 38
38
D
54 68Right-handed alpha
Helix 39
39
D
81 92Right-handed alpha
Helix 40
40
D
117 129Right-handed alpha
Helix 41
41
D
143 156Right-handed alpha
Helix 42
42
D
170 183Right-handed alpha
Helix 43
43
D
194 209Right-handed alpha
Helix 44
44
D
223 227Right-handed 310
Helix 45
45
D
229 234Right-handed alpha
Helix 46
46
D
249 260Right-handed alpha
Helix 47
47
D
276 299Right-handed alpha
Helix 48
48
D
321 333Right-handed alpha
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There are 12 sheets in PDB entry 3O21. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L,

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
42 49first strand
Strand 2
A
5 12parallel
Strand 3
A
73 75parallel
Strand 4
A
96 98parallel
Strand 5
A
110 112parallel
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There are 8 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
159 164first strand
Strand 2
A
132 137parallel
Strand 3
A
188 192parallel
Strand 4
A
216 219parallel
Strand 5
A
238 243parallel
Strand 6
A
355 361anti-parallel
Strand 7
A
364 372anti-parallel
Strand 8
A
376 378anti-parallel
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There are 2 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
335 337first strand
Strand 2
A
340 342anti-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
42 49first strand
Strand 2
B
5 12parallel
Strand 3
B
73 75parallel
Strand 4
B
96 98parallel
Strand 5
B
110 112parallel
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There are 8 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
159 164first strand
Strand 2
B
132 137parallel
Strand 3
B
188 192parallel
Strand 4
B
216 219parallel
Strand 5
B
238 243parallel
Strand 6
B
355 361anti-parallel
Strand 7
B
364 372anti-parallel
Strand 8
B
376 379anti-parallel
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There are 2 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
335 337first strand
Strand 2
B
340 342anti-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
C
42 49first strand
Strand 2
C
5 12parallel
Strand 3
C
73 75parallel
Strand 4
C
96 98parallel
Strand 5
C
110 112parallel
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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
C
159 164first strand
Strand 2
C
132 137parallel
Strand 3
C
188 192parallel
Strand 4
C
216 219parallel
Strand 5
C
238 243parallel
Strand 6
C
355 361anti-parallel
Strand 7
C
364 372anti-parallel
Strand 8
C
376 379anti-parallel
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There are 3 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
335 337first strand
Strand 2
C
340 344anti-parallel
Strand 3
C
350 351anti-parallel
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There are 5 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
42 49first strand
Strand 2
D
5 12parallel
Strand 3
D
73 75parallel
Strand 4
D
96 98parallel
Strand 5
D
110 112parallel
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There are 8 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
159 164first strand
Strand 2
D
132 137parallel
Strand 3
D
188 192parallel
Strand 4
D
216 219parallel
Strand 5
D
238 243parallel
Strand 6
D
355 361anti-parallel
Strand 7
D
364 372anti-parallel
Strand 8
D
376 379anti-parallel
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There are 2 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
335 337first strand
Strand 2
D
340 342anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il