Analysis of interatomic Contacts of Structural Units in PDB entry:
3A1I


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 3A1I entry

There is 1 chain in PDB entry 3A1I (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 2GLU 509
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 20 helices in PDB entry 3A1I. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
7 18Right-handed alpha
Helix 2
2
A
25 52Right-handed alpha
Helix 3
3
A
65 69Right-handed 310
Helix 4
4
A
122 130Right-handed alpha
Helix 5
5
A
142 146Right-handed 310
Helix 6
6
A
172 181Right-handed alpha
Helix 7
7
A
196 204Right-handed alpha
Helix 8
8
A
224 228Right-handed 310
Helix 9
9
A
236 248Right-handed alpha
Helix 10
10
A
284 286Right-handed 310
Helix 11
11
A
292 305Right-handed alpha
Helix 12
12
A
306 310Right-handed 310
Helix 13
13
A
319 340Right-handed alpha
Helix 14
14
A
355 369Right-handed alpha
Helix 15
15
A
370 373Right-handed 310
Helix 16
16
A
374 389Right-handed alpha
Helix 17
17
A
393 417Right-handed alpha
Helix 18
18
A
438 448Right-handed alpha
Helix 19
19
A
453 460Right-handed alpha
Helix 20
20
A
486 502Right-handed alpha
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There are 2 sheets in PDB entry 3A1I. Click on sheet of interest to get list of strands forming it: A, B,

There are 11 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
74 80first strand
Strand 2
A
134 139anti-parallel
Strand 3
A
92 96parallel
Strand 4
A
186 191parallel
Strand 5
A
229 234anti-parallel
Strand 6
A
206 209anti-parallel
Strand 7
A
463 471anti-parallel
Strand 8
A
474 481anti-parallel
Strand 9
A
419 423anti-parallel
Strand 10
A
278 282parallel
Strand 11
A
312 316parallel
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There are 2 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
159 160first strand
Strand 2
A
163 167anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il