Analysis of interatomic Contacts of Structural Units in PDB entry:
1A4R


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 1A4R entry

There are 2 chains in PDB entry 1A4R (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 MET 1LEU 190
B
 MET 201LEU 390
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 1A4R. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
16 25Right-handed alpha
Helix 2
2
A
62 71Right-handed 310
Helix 3
3
A
87 95Right-handed alpha
Helix 4
4
A
97 104Right-handed alpha
Helix 5
5
A
117 121Right-handed 310
Helix 6
6
A
123 132Right-handed alpha
Helix 7
7
A
139 148Right-handed alpha
Helix 8
8
A
165 176Right-handed alpha
Helix 9
9
A
182 184Right-handed 310
Helix 10
10
B
216 225Right-handed alpha
Helix 11
11
B
262 264Right-handed 310
Helix 12
12
B
268 270Right-handed 310
Helix 13
13
B
287 295Right-handed alpha
Helix 14
14
B
297 304Right-handed alpha
Helix 15
15
B
317 319Right-handed 310
Helix 16
16
B
325 328Right-handed alpha
Helix 17
17
B
339 349Right-handed alpha
Helix 18
18
B
365 376Right-handed alpha
Helix 19
19
B
381 383Right-handed 310
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There are 2 sheets in PDB entry 1A4R. Click on sheet of interest to get list of strands forming it: A, B,

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
154 156first strand
Strand 2
A
109 115parallel
Strand 3
A
77 83parallel
Strand 4
A
3 10parallel
Strand 5
A
49 56parallel
Strand 6
A
39 46anti-parallel
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There are 6 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
354 356first strand
Strand 2
B
309 315parallel
Strand 3
B
277 283parallel
Strand 4
B
202 210parallel
Strand 5
B
249 256parallel
Strand 6
B
239 246anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il