Analysis of interatomic Contacts of Structural Units in PDB entry:
1X2A


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 1X2A entry

There are 2 chains in PDB entry 1X2A (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MET 5LEU 409
B
 MET 5LEU 409
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 39 helices in PDB entry 1X2A. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
5 9Right-handed 310
Helix 2
2
A
17 27Right-handed alpha
Helix 3
3
A
50 64Right-handed alpha
Helix 4
4
A
76 89Right-handed alpha
Helix 5
5
A
92 97Right-handed alpha
Helix 6
6
A
106 123Right-handed alpha
Helix 7
7
A
141 149Right-handed alpha
Helix 8
8
A
169 177Right-handed alpha
Helix 9
9
A
178 180Right-handed 310
Helix 10
10
A
201 216Right-handed alpha
Helix 11
11
A
234 236Right-handed 310
Helix 12
12
A
237 245Right-handed alpha
Helix 13
13
A
262 266Right-handed 310
Helix 14
14
A
276 293Right-handed alpha
Helix 15
15
A
299 312Right-handed alpha
Helix 16
16
A
312 344Right-handed alpha
Helix 17
17
A
350 356Right-handed 310
Helix 18
18
A
366 378Right-handed alpha
Helix 19
19
A
390 392Right-handed 310
Helix 20
20
A
396 409Right-handed alpha
Helix 21
21
B
17 27Right-handed alpha
Helix 22
22
B
50 64Right-handed alpha
Helix 23
23
B
76 89Right-handed alpha
Helix 24
24
B
92 97Right-handed alpha
Helix 25
25
B
106 123Right-handed alpha
Helix 26
26
B
141 150Right-handed alpha
Helix 27
27
B
169 177Right-handed alpha
Helix 28
28
B
178 180Right-handed 310
Helix 29
29
B
201 216Right-handed alpha
Helix 30
30
B
231 237Right-handed alpha
Helix 31
31
B
237 245Right-handed alpha
Helix 32
32
B
262 266Right-handed 310
Helix 33
33
B
276 293Right-handed alpha
Helix 34
34
B
299 312Right-handed alpha
Helix 35
35
B
312 344Right-handed alpha
Helix 36
36
B
350 356Right-handed 310
Helix 37
37
B
366 378Right-handed alpha
Helix 38
38
B
390 392Right-handed 310
Helix 39
39
B
396 409Right-handed alpha
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There are 8 sheets in PDB entry 1X2A. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

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
33 34first strand
Strand 2
A
379 380parallel
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There are 7 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
100 105first strand
Strand 2
A
268 273anti-parallel
Strand 3
A
250 255anti-parallel
Strand 4
A
218 223parallel
Strand 5
A
185 189parallel
Strand 6
A
129 137parallel
Strand 7
A
154 159parallel
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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
161 162first strand
Strand 2
A
167 168anti-parallel
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There are 2 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
360 362first strand
Strand 2
A
386 388anti-parallel
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There are 2 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
33 34first strand
Strand 2
B
379 380parallel
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There are 7 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
100 105first strand
Strand 2
B
268 273anti-parallel
Strand 3
B
250 255anti-parallel
Strand 4
B
218 223parallel
Strand 5
B
185 189parallel
Strand 6
B
129 137parallel
Strand 7
B
154 159parallel
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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
161 162first strand
Strand 2
B
167 168anti-parallel
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There are 2 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
360 362first strand
Strand 2
B
386 388anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il