Analysis of interatomic Contacts of Structural Units in PDB entry:
2A1U


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 2A1U entry

There are 2 chains in PDB entry 2A1U (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 PHE 19LYS 333
B
 LEU 4ILE 255
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 21 helices in PDB entry 2A1U. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
34 46Right-handed alpha
Helix 2
2
A
60 68Right-handed alpha
Helix 3
3
A
82 85Right-handed 310
Helix 4
4
A
88 104Right-handed alpha
Helix 5
5
A
113 128Right-handed alpha
Helix 6
6
A
170 173Right-handed 310
Helix 7
7
A
223 226Right-handed 310
Helix 8
8
A
231 242Right-handed alpha
Helix 9
9
A
248 254Right-handed alpha
Helix 10
10
A
258 262Right-handed 310
Helix 11
11
A
283 288Right-handed alpha
Helix 12
12
A
305 310Right-handed 310
Helix 13
13
A
318 331Right-handed alpha
Helix 14
14
B
39 55Right-handed alpha
Helix 15
15
B
70 82Right-handed alpha
Helix 16
16
B
92 97Right-handed alpha
Helix 17
17
B
100 115Right-handed alpha
Helix 18
18
B
133 143Right-handed alpha
Helix 19
19
B
194 202Right-handed alpha
Helix 20
20
B
210 215Right-handed 310
Helix 21
21
B
241 252Right-handed alpha
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There are 5 sheets in PDB entry 2A1U. Click on sheet of interest to get list of strands forming it: A, B, C, D, E,

There are 7 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
132 135first strand
Strand 2
A
164 168parallel
Strand 3
A
107 111parallel
Strand 4
A
21 25parallel
Strand 5
A
50 57parallel
Strand 6
A
75 80parallel
Strand 7
A
184 187parallel
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There are 4 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
137 140first strand
Strand 2
A
143 148anti-parallel
Strand 3
A
153 159anti-parallel
Strand 4
B
222 228anti-parallel
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There are 10 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
197 204first strand
Strand 2
B
169 176anti-parallel
Strand 3
B
159 166anti-parallel
Strand 4
B
146 155anti-parallel
Strand 5
B
179 183parallel
Strand 6
B
119 123parallel
Strand 7
B
5 9parallel
Strand 8
B
60 67parallel
Strand 9
B
85 90parallel
Strand 10
B
206 209parallel
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There are 6 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
244 247first strand
Strand 2
A
217 221parallel
Strand 3
A
274 278parallel
Strand 4
A
295 300parallel
Strand 5
A
313 316parallel
Strand 6
B
237 238parallel
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There are 2 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
12 14first strand
Strand 2
B
36 38anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il