Analysis of interatomic Contacts of Structural Units in PDB entry:
2CA4


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 2CA4 entry

There are 2 chains in PDB entry 2CA4 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 1ALA 373
B
 ALA 501TYR 581
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 12 helices in PDB entry 2CA4. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
37 43Right-handed 310
Helix 2
2
A
85 93Right-handed alpha
Helix 3
3
A
108 112Right-handed 310
Helix 4
4
A
136 144Right-handed alpha
Helix 5
5
A
174 178Right-handed alpha
Helix 6
6
A
194 198Right-handed 310
Helix 7
7
A
209 213Right-handed 310
Helix 8
8
A
229 234Right-handed alpha
Helix 9
9
B
520 529Right-handed alpha
Helix 10
10
B
535 540Right-handed alpha
Helix 11
11
B
546 560Right-handed alpha
Helix 12
12
B
566 581Right-handed alpha
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There are 8 sheets in PDB entry 2CA4. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, AF, AG, AH,

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
3 5first strand
Strand 2
A
12 17anti-parallel
Strand 3
A
23 28anti-parallel
Strand 4
A
33 35anti-parallel
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There are 2 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
64 65first strand
Strand 2
B
503 504anti-parallel
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There are 5 strands in AC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
82 84first strand
Strand 2
A
72 76anti-parallel
Strand 3
A
217 223parallel
Strand 4
A
151 156anti-parallel
Strand 5
A
169 173anti-parallel
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There are 4 strands in AD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
96 103first strand
Strand 2
A
126 135anti-parallel
Strand 3
A
183 188anti-parallel
Strand 4
A
202 204anti-parallel
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There are 4 strands in AE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
96 103first strand
Strand 2
A
126 135anti-parallel
Strand 3
A
183 188anti-parallel
Strand 4
A
191 192anti-parallel
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There are 2 strands in AF sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
237 239first strand
Strand 2
A
255 257anti-parallel
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There are 4 strands in AG sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
264 267first strand
Strand 2
A
279 288anti-parallel
Strand 3
A
322 330anti-parallel
Strand 4
A
311 312anti-parallel
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There are 5 strands in AH sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
274 277first strand
Strand 2
A
366 373parallel
Strand 3
A
333 343anti-parallel
Strand 4
A
294 300anti-parallel
Strand 5
A
308 309anti-parallel
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