Analysis of interatomic Contacts of Structural Units in PDB entry:
2CA1


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 2CA1 entry

There are 2 chains in PDB entry 2CA1 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 HIS 216GLY 326
B
 ARG 225GLY 326
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 13 helices in PDB entry 2CA1. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
218 224Right-handed alpha
Helix 2
2
A
226 230Right-handed 310
Helix 3
3
A
238 243Right-handed alpha
Helix 4
4
A
255 262Right-handed alpha
Helix 5
5
A
265 273Right-handed alpha
Helix 6
6
A
277 285Right-handed alpha
Helix 7
7
A
312 324Right-handed alpha
Helix 8
8
B
226 230Right-handed 310
Helix 9
9
B
237 241Right-handed 310
Helix 10
10
B
255 262Right-handed alpha
Helix 11
11
B
265 272Right-handed alpha
Helix 12
12
B
277 284Right-handed alpha
Helix 13
13
B
312 324Right-handed alpha
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There is 1 sheet ( AA) in PDB entry 2CA1.

There are 4 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
286 292first strand
Strand 2
A
295 306anti-parallel
Strand 3
B
295 306anti-parallel
Strand 4
B
286 292anti-parallel
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