Analysis of interatomic Contacts of Structural Units in PDB entry:
4A1K


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 4A1K entry

There are 2 chains in PDB entry 4A1K (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLY 0GLY 138
A
 ILE 140ARG 164
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 8 helices in PDB entry 4A1K. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
11 19Right-handed alpha
Helix 2
2
A
22 30Right-handed alpha
Helix 3
3
A
31 36Right-handed 310
Helix 4
4
A
50 54Right-handed 310
Helix 5
5
A
86 89Right-handed 310
Helix 6
6
A
105 109Right-handed 310
Helix 7
7
A
127 131Right-handed 310
Helix 8
8
A
143 154Right-handed alpha
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There are 3 sheets in PDB entry 4A1K. Click on sheet of interest to get list of strands forming it: AA, AB, AC,

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
2 5first strand
Strand 2
A
42 45anti-parallel
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There are 8 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
74 80first strand
Strand 2
A
66 71anti-parallel
Strand 3
A
56 61anti-parallel
Strand 4
A
159 163parallel
Strand 5
A
93 102anti-parallel
Strand 6
A
111 115anti-parallel
Strand 7
A
121 123anti-parallel
Strand 8
A
140 141parallel
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There are 2 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
83 84first strand
Strand 2
A
134 136parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il