Analysis of interatomic Contacts of Structural Units in PDB entry:
2A1K


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 2A1K entry

There are 2 chains in PDB entry 2A1K (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ASP 27THR 241
B
 GLY 29GLY 240
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 19 helices in PDB entry 2A1K. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
78 82Right-handed 310
Helix 2
2
A
87 96Right-handed alpha
Helix 3
3
A
97 102Right-handed alpha
Helix 4
4
A
102 110Right-handed alpha
Helix 5
5
A
127 131Right-handed 310
Helix 6
6
A
140 152Right-handed alpha
Helix 7
7
A
202 213Right-handed alpha
Helix 8
8
A
215 225Right-handed 310
Helix 9
9
A
227 240Right-handed alpha
Helix 10
10
B
78 82Right-handed 310
Helix 11
11
B
87 96Right-handed alpha
Helix 12
12
B
97 102Right-handed alpha
Helix 13
13
B
102 110Right-handed alpha
Helix 14
14
B
127 131Right-handed 310
Helix 15
15
B
140 150Right-handed alpha
Helix 16
16
B
154 158Right-handed 310
Helix 17
17
B
202 213Right-handed alpha
Helix 18
18
B
215 225Right-handed 310
Helix 19
19
B
227 240Right-handed alpha
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There are 4 sheets in PDB entry 2A1K. Click on sheet of interest to get list of strands forming it: A, B, C, D,

There are 6 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
71 76first strand
Strand 2
A
58 68anti-parallel
Strand 3
A
112 123anti-parallel
Strand 4
A
41 47anti-parallel
Strand 5
A
171 180anti-parallel
Strand 6
A
183 185anti-parallel
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There are 5 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
134 139first strand
Strand 2
A
112 123anti-parallel
Strand 3
A
41 47anti-parallel
Strand 4
A
171 180anti-parallel
Strand 5
A
190 194anti-parallel
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There are 6 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
71 76first strand
Strand 2
B
58 68anti-parallel
Strand 3
B
112 123anti-parallel
Strand 4
B
41 47anti-parallel
Strand 5
B
171 180anti-parallel
Strand 6
B
183 185anti-parallel
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There are 5 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
134 139first strand
Strand 2
B
112 123anti-parallel
Strand 3
B
41 47anti-parallel
Strand 4
B
171 180anti-parallel
Strand 5
B
190 194anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il