Analysis of interatomic Contacts of Structural Units in PDB entry:
4CA1


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 4CA1 entry

There are 2 chains in PDB entry 4CA1 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 91CYS 282
B
 ALA 91CYS 282
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 14 helices in PDB entry 4CA1. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
100 104Right-handed 310
Helix 2
2
A
110 121Right-handed alpha
Helix 3
3
A
140 142Right-handed 310
Helix 4
4
A
143 152Right-handed alpha
Helix 5
5
A
214 219Right-handed alpha
Helix 6
6
A
247 253Right-handed alpha
Helix 7
7
A
261 268Right-handed alpha
Helix 8
8
B
100 104Right-handed 310
Helix 9
9
B
111 121Right-handed alpha
Helix 10
10
B
140 142Right-handed 310
Helix 11
11
B
143 152Right-handed alpha
Helix 12
12
B
214 219Right-handed alpha
Helix 13
13
B
247 253Right-handed alpha
Helix 14
14
B
261 268Right-handed alpha
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There are 11 sheets in PDB entry 4CA1. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, AF, BA, BB, BC, BD, BE,

There are 2 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
96 97first strand
Strand 2
A
108 109anti-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
126 127first strand
Strand 2
A
138 139anti-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
156 159first strand
Strand 2
A
176 184parallel
Strand 3
A
187 197anti-parallel
Strand 4
A
203 211anti-parallel
Strand 5
A
241 242anti-parallel
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There are 5 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
156 159first strand
Strand 2
A
176 184parallel
Strand 3
A
187 197anti-parallel
Strand 4
A
203 211anti-parallel
Strand 5
A
257 260anti-parallel
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There are 2 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
241 242first strand
Strand 2
A
203 211anti-parallel
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There are 8 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
162 167first strand
Strand 2
A
273 281anti-parallel
Strand 3
A
221 229anti-parallel
Strand 4
A
232 238anti-parallel
Strand 5
B
232 238anti-parallel
Strand 6
B
221 229anti-parallel
Strand 7
B
273 281anti-parallel
Strand 8
B
162 167anti-parallel
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There are 2 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
95 97first strand
Strand 2
B
108 110anti-parallel
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There are 2 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
126 127first strand
Strand 2
B
138 139anti-parallel
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There are 5 strands in BC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
157 159first strand
Strand 2
B
176 184parallel
Strand 3
B
187 196anti-parallel
Strand 4
B
204 211anti-parallel
Strand 5
B
241 242anti-parallel
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There are 5 strands in BD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
157 159first strand
Strand 2
B
176 184parallel
Strand 3
B
187 196anti-parallel
Strand 4
B
204 211anti-parallel
Strand 5
B
257 260anti-parallel
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There are 2 strands in BE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
241 242first strand
Strand 2
B
204 211anti-parallel
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