Analysis of interatomic Contacts of Structural Units in PDB entry:
3X23


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 3X23 entry

There are 2 chains in PDB entry 3X23 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLY -1PRO 297
B
 GLY 566ARG 576
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 10 helices in PDB entry 3X23. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
25 38Right-handed alpha
Helix 2
2
A
41 43Right-handed 310
Helix 3
3
A
64 68Right-handed 310
Helix 4
4
A
88 93Right-handed alpha
Helix 5
5
A
95 112Right-handed alpha
Helix 6
6
A
118 135Right-handed alpha
Helix 7
7
A
154 160Right-handed alpha
Helix 8
8
A
164 178Right-handed alpha
Helix 9
9
A
183 196Right-handed alpha
Helix 10
10
A
273 294Right-handed alpha
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There are 3 sheets in PDB entry 3X23. Click on sheet of interest to get list of strands forming it: A, B, C,

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
56 58first strand
Strand 2
A
45 50anti-parallel
Strand 3
A
76 82anti-parallel
Strand 4
A
5 10parallel
Strand 5
A
14 20anti-parallel
Strand 6
B
569 575anti-parallel
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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
204 209first strand
Strand 2
A
215 220anti-parallel
Strand 3
A
224 229anti-parallel
Strand 4
A
238 241anti-parallel
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There are 3 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
245 251first strand
Strand 2
A
254 259anti-parallel
Strand 3
A
267 270anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il