Analysis of interatomic Contacts of Structural Units in PDB entry:
2X9A


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 2X9A entry

There are 4 chains in PDB entry 2X9A (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 THR 2ASP 62
B
 SER 332ALA 421
C
 THR 2ASP 62
D
 SER 332ALA 421
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 10 helices in PDB entry 2X9A. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
3 9Right-handed alpha
Helix 2
2
B
332 349Right-handed alpha
Helix 3
3
B
353 358Right-handed 310
Helix 4
4
B
383 397Right-handed alpha
Helix 5
5
B
404 412Right-handed alpha
Helix 6
6
C
3 9Right-handed alpha
Helix 7
7
D
332 349Right-handed alpha
Helix 8
8
D
353 358Right-handed 310
Helix 9
9
D
383 397Right-handed alpha
Helix 10
10
D
404 412Right-handed alpha
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There are 4 sheets in PDB entry 2X9A. Click on sheet of interest to get list of strands forming it: AA, AB, CA, CB,

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
13 18first strand
Strand 2
A
50 60anti-parallel
Strand 3
A
34 45anti-parallel
Strand 4
B
415 419anti-parallel
Strand 5
B
362 368anti-parallel
Strand 6
B
374 382anti-parallel
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There are 5 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
13 18first strand
Strand 2
A
50 60anti-parallel
Strand 3
A
34 45anti-parallel
Strand 4
A
26 31anti-parallel
Strand 5
A
21 23parallel
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There are 6 strands in CA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
13 17first strand
Strand 2
C
50 60anti-parallel
Strand 3
C
34 45anti-parallel
Strand 4
D
415 419anti-parallel
Strand 5
D
362 368anti-parallel
Strand 6
D
374 382anti-parallel
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There are 5 strands in CB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
13 17first strand
Strand 2
C
50 60anti-parallel
Strand 3
C
34 45anti-parallel
Strand 4
C
26 31anti-parallel
Strand 5
C
21 23parallel
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