Analysis of interatomic Contacts of Structural Units in PDB entry:
1XA4


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 1XA4 entry

There are 2 chains in PDB entry 1XA4 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LEU 4VAL 403
B
 LEU 4VAL 403
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 38 helices in PDB entry 1XA4. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
24 36Right-handed alpha
Helix 2
2
A
50 55Right-handed 310
Helix 3
3
A
57 63Right-handed alpha
Helix 4
4
A
75 87Right-handed alpha
Helix 5
5
A
99 104Right-handed alpha
Helix 6
6
A
107 115Right-handed alpha
Helix 7
7
A
140 148Right-handed alpha
Helix 8
8
A
150 153Right-handed 310
Helix 9
9
A
166 191Right-handed alpha
Helix 10
10
A
200 208Right-handed alpha
Helix 11
11
A
208 217Right-handed alpha
Helix 12
12
A
252 264Right-handed alpha
Helix 13
13
A
265 269Right-handed 310
Helix 14
14
A
288 302Right-handed alpha
Helix 15
15
A
304 315Right-handed alpha
Helix 16
16
A
324 328Right-handed 310
Helix 17
17
A
331 338Right-handed alpha
Helix 18
18
A
377 385Right-handed alpha
Helix 19
19
A
388 398Right-handed alpha
Helix 20
20
B
24 36Right-handed alpha
Helix 21
21
B
50 55Right-handed 310
Helix 22
22
B
57 63Right-handed alpha
Helix 23
23
B
75 87Right-handed alpha
Helix 24
24
B
99 104Right-handed alpha
Helix 25
25
B
107 115Right-handed alpha
Helix 26
26
B
140 148Right-handed alpha
Helix 27
27
B
150 153Right-handed 310
Helix 28
28
B
166 191Right-handed alpha
Helix 29
29
B
200 208Right-handed alpha
Helix 30
30
B
208 217Right-handed alpha
Helix 31
31
B
252 264Right-handed alpha
Helix 32
32
B
265 269Right-handed 310
Helix 33
33
B
288 302Right-handed alpha
Helix 34
34
B
304 315Right-handed alpha
Helix 35
35
B
324 328Right-handed 310
Helix 36
36
B
331 338Right-handed alpha
Helix 37
37
B
377 385Right-handed alpha
Helix 38
38
B
388 398Right-handed alpha
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There are 8 sheets in PDB entry 1XA4. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

There are 8 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
401 402first strand
Strand 2
A
67 71anti-parallel
Strand 3
A
39 44parallel
Strand 4
A
16 20parallel
Strand 5
A
91 95parallel
Strand 6
A
119 124parallel
Strand 7
A
194 199parallel
Strand 8
B
359 360anti-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
155 156first strand
Strand 2
A
159 160anti-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
236 241first strand
Strand 2
A
244 249anti-parallel
Strand 3
A
318 321anti-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
340 344first strand
Strand 2
A
350 354anti-parallel
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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
A
359 360first strand
Strand 2
B
194 199anti-parallel
Strand 3
B
119 124parallel
Strand 4
B
91 95parallel
Strand 5
B
16 20parallel
Strand 6
B
39 44parallel
Strand 7
B
67 71parallel
Strand 8
B
401 402anti-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
155 156first strand
Strand 2
B
159 160anti-parallel
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There are 3 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
236 241first strand
Strand 2
B
244 249anti-parallel
Strand 3
B
318 321anti-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
340 344first strand
Strand 2
B
350 354anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il