Analysis of interatomic Contacts of Structural Units in PDB entry:
2X5K


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 2X5K entry

There are 4 chains in PDB entry 2X5K (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
O
 THR 0ARG 334
P
 THR 0ARG 334
Q
 THR 0PHE 333
R
 THR 0PHE 333
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 55 helices in PDB entry 2X5K. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
O
9 22Right-handed alpha
Helix 2
2
O
22 23Right-handed 310
Helix 3
3
O
36 46Right-handed alpha
Helix 4
4
O
78 82Right-handed 310
Helix 5
5
O
101 111Right-handed alpha
Helix 6
6
O
133 137Right-handed 310
Helix 7
7
O
148 166Right-handed alpha
Helix 8
8
O
209 218Right-handed alpha
Helix 9
9
O
219 222Right-handed 310
Helix 10
10
O
251 265Right-handed alpha
Helix 11
11
O
279 284Right-handed 310
Helix 12
12
O
295 297Right-handed 310
Helix 13
13
O
314 333Right-handed alpha
Helix 14
14
P
9 22Right-handed alpha
Helix 15
15
P
22 23Right-handed 310
Helix 16
16
P
36 46Right-handed alpha
Helix 17
17
P
78 82Right-handed 310
Helix 18
18
P
83 88Right-handed alpha
Helix 19
19
P
101 111Right-handed alpha
Helix 20
20
P
133 137Right-handed 310
Helix 21
21
P
148 166Right-handed alpha
Helix 22
22
P
209 218Right-handed alpha
Helix 23
23
P
219 222Right-handed 310
Helix 24
24
P
251 265Right-handed alpha
Helix 25
25
P
279 284Right-handed 310
Helix 26
26
P
314 332Right-handed alpha
Helix 27
27
Q
9 22Right-handed alpha
Helix 28
28
Q
22 23Right-handed 310
Helix 29
29
Q
36 46Right-handed alpha
Helix 30
30
Q
78 82Right-handed 310
Helix 31
31
Q
83 88Right-handed alpha
Helix 32
32
Q
101 111Right-handed alpha
Helix 33
33
Q
133 137Right-handed 310
Helix 34
34
Q
148 166Right-handed alpha
Helix 35
35
Q
179 183Right-handed 310
Helix 36
36
Q
192 197Right-handed 310
Helix 37
37
Q
209 218Right-handed alpha
Helix 38
38
Q
219 222Right-handed 310
Helix 39
39
Q
251 265Right-handed alpha
Helix 40
40
Q
279 284Right-handed 310
Helix 41
41
Q
295 297Right-handed 310
Helix 42
42
Q
314 332Right-handed alpha
Helix 43
43
R
9 22Right-handed alpha
Helix 44
44
R
22 23Right-handed 310
Helix 45
45
R
36 47Right-handed alpha
Helix 46
46
R
78 82Right-handed 310
Helix 47
47
R
83 88Right-handed alpha
Helix 48
48
R
101 111Right-handed alpha
Helix 49
49
R
133 137Right-handed 310
Helix 50
50
R
148 166Right-handed alpha
Helix 51
51
R
209 218Right-handed alpha
Helix 52
52
R
219 222Right-handed 310
Helix 53
53
R
251 265Right-handed alpha
Helix 54
54
R
279 284Right-handed 310
Helix 55
55
R
314 332Right-handed alpha
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There are 12 sheets in PDB entry 2X5K. Click on sheet of interest to get list of strands forming it: OA, OB, OC, OD, PA, PB, QA, QB, QC, QD, RA, RB,

There are 9 strands in OA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
O
57 60first strand
Strand 2
O
63 66anti-parallel
Strand 3
O
69 74anti-parallel
Strand 4
O
25 31parallel
Strand 5
O
1 6parallel
Strand 6
O
91 94parallel
Strand 7
O
115 118parallel
Strand 8
O
143 145parallel
Strand 9
O
126 127parallel
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There are 6 strands in OB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
O
204 206first strand
Strand 2
O
225 232anti-parallel
Strand 3
O
167 177parallel
Strand 4
O
237 246anti-parallel
Strand 5
O
304 312anti-parallel
Strand 6
O
298 299parallel
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There are 7 strands in OC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
O
204 206first strand
Strand 2
O
225 232anti-parallel
Strand 3
O
167 177parallel
Strand 4
O
237 246anti-parallel
Strand 5
O
304 312anti-parallel
Strand 6
O
290 293anti-parallel
Strand 7
O
271 274parallel
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There are 2 strands in OD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
O
298 299first strand
Strand 2
O
304 312parallel
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There are 9 strands in PA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
P
57 60first strand
Strand 2
P
63 66anti-parallel
Strand 3
P
69 74anti-parallel
Strand 4
P
25 31parallel
Strand 5
P
1 6parallel
Strand 6
P
91 94parallel
Strand 7
P
115 118parallel
Strand 8
P
143 145parallel
Strand 9
P
126 127parallel
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There are 7 strands in PB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
P
204 205first strand
Strand 2
P
225 232anti-parallel
Strand 3
P
167 177parallel
Strand 4
P
237 246anti-parallel
Strand 5
P
304 312anti-parallel
Strand 6
P
290 300anti-parallel
Strand 7
P
271 274parallel
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There are 9 strands in QA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Q
57 60first strand
Strand 2
Q
63 66anti-parallel
Strand 3
Q
69 74anti-parallel
Strand 4
Q
25 31parallel
Strand 5
Q
1 6parallel
Strand 6
Q
91 94parallel
Strand 7
Q
115 118parallel
Strand 8
Q
143 145parallel
Strand 9
Q
126 127parallel
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There are 6 strands in QB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Q
204 205first strand
Strand 2
Q
225 231anti-parallel
Strand 3
Q
167 176parallel
Strand 4
Q
238 246anti-parallel
Strand 5
Q
304 311anti-parallel
Strand 6
Q
298 300parallel
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There are 7 strands in QC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Q
204 205first strand
Strand 2
Q
225 231anti-parallel
Strand 3
Q
167 176parallel
Strand 4
Q
238 246anti-parallel
Strand 5
Q
304 311anti-parallel
Strand 6
Q
290 293anti-parallel
Strand 7
Q
271 274parallel
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There are 2 strands in QD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Q
298 300first strand
Strand 2
Q
304 311parallel
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There are 9 strands in RA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
R
57 60first strand
Strand 2
R
63 66anti-parallel
Strand 3
R
69 74anti-parallel
Strand 4
R
25 31parallel
Strand 5
R
1 6parallel
Strand 6
R
91 94parallel
Strand 7
R
115 118parallel
Strand 8
R
143 145parallel
Strand 9
R
126 127parallel
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There are 7 strands in RB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
R
204 205first strand
Strand 2
R
225 235anti-parallel
Strand 3
R
167 178parallel
Strand 4
R
237 246anti-parallel
Strand 5
R
304 312anti-parallel
Strand 6
R
290 300anti-parallel
Strand 7
R
271 274parallel
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