Analysis of interatomic Contacts of Structural Units in PDB entry:
2XA1


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 2XA1 entry

There are 2 chains in PDB entry 2XA1 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MSE 3SER 413
B
 LYS 2ASN 412
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 36 helices in PDB entry 2XA1. 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 18Right-handed 310
Helix 2
2
A
19 35Right-handed alpha
Helix 3
3
A
54 69Right-handed alpha
Helix 4
4
A
81 95Right-handed alpha
Helix 5
5
A
104 120Right-handed alpha
Helix 6
6
A
137 143Right-handed 310
Helix 7
7
A
162 174Right-handed alpha
Helix 8
8
A
183 187Right-handed 310
Helix 9
9
A
214 225Right-handed alpha
Helix 10
10
A
245 258Right-handed alpha
Helix 11
11
A
275 290Right-handed alpha
Helix 12
12
A
301 303Right-handed 310
Helix 13
13
A
305 315Right-handed alpha
Helix 14
14
A
329 338Right-handed alpha
Helix 15
15
A
347 354Right-handed alpha
Helix 16
16
A
365 379Right-handed alpha
Helix 17
17
A
379 398Right-handed alpha
Helix 18
18
A
399 413Right-handed alpha
Helix 19
19
B
15 18Right-handed 310
Helix 20
20
B
19 35Right-handed alpha
Helix 21
21
B
54 69Right-handed alpha
Helix 22
22
B
81 95Right-handed alpha
Helix 23
23
B
104 120Right-handed alpha
Helix 24
24
B
137 143Right-handed 310
Helix 25
25
B
162 174Right-handed alpha
Helix 26
26
B
183 187Right-handed 310
Helix 27
27
B
214 225Right-handed alpha
Helix 28
28
B
245 258Right-handed alpha
Helix 29
29
B
275 290Right-handed alpha
Helix 30
30
B
301 303Right-handed 310
Helix 31
31
B
305 316Right-handed alpha
Helix 32
32
B
329 338Right-handed alpha
Helix 33
33
B
347 354Right-handed alpha
Helix 34
34
B
365 379Right-handed alpha
Helix 35
35
B
379 398Right-handed alpha
Helix 36
36
B
399 411Right-handed alpha
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There are 4 sheets in PDB entry 2XA1. Click on sheet of interest to get list of strands forming it: AA, AB, BA, BB,

There are 6 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
72 77first strand
Strand 2
A
42 47parallel
Strand 3
A
129 133parallel
Strand 4
A
150 153parallel
Strand 5
A
178 181parallel
Strand 6
A
196 198parallel
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There are 6 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
295 299first strand
Strand 2
A
264 269parallel
Strand 3
A
233 237parallel
Strand 4
A
318 321parallel
Strand 5
A
342 345parallel
Strand 6
A
360 363parallel
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There are 7 strands in BA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
4 5first strand
Strand 2
B
72 77anti-parallel
Strand 3
B
42 47parallel
Strand 4
B
129 133parallel
Strand 5
B
150 153parallel
Strand 6
B
178 181parallel
Strand 7
B
196 198parallel
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There are 6 strands in BB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
295 299first strand
Strand 2
B
264 269parallel
Strand 3
B
233 237parallel
Strand 4
B
318 321parallel
Strand 5
B
342 345parallel
Strand 6
B
361 363parallel
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