Analysis of interatomic Contacts of Structural Units in PDB entry:
4XSQ


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 4XSQ entry

There are 2 chains in PDB entry 4XSQ (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 CYS 21GLY 194
B
 MSE 20PHE 199
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 14 helices in PDB entry 4XSQ. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
A
117 120Right-handed 310
Helix 2
AA2
A
121 131Right-handed alpha
Helix 3
AA3
A
147 149Right-handed 310
Helix 4
AA4
A
150 160Right-handed alpha
Helix 5
AA5
A
174 178Right-handed 310
Helix 6
AA6
A
181 185Right-handed 310
Helix 7
AA7
A
186 190Right-handed 310
Helix 8
AA8
B
117 120Right-handed 310
Helix 9
AA9
B
121 131Right-handed alpha
Helix 10
AB1
B
147 149Right-handed 310
Helix 11
AB2
B
150 159Right-handed alpha
Helix 12
AB3
B
174 178Right-handed 310
Helix 13
AB4
B
181 185Right-handed 310
Helix 14
AB5
B
186 190Right-handed 310
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There are 6 sheets in PDB entry 4XSQ. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6,

There are 6 strands in AA1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
26 29first strand
Strand 2
A
35 38anti-parallel
Strand 3
A
55 59parallel
Strand 4
A
81 83parallel
Strand 5
A
105 107parallel
Strand 6
A
136 138parallel
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There are 2 strands in AA2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
67 68first strand
Strand 2
A
91 92parallel
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There are 2 strands in AA3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
144 145first strand
Strand 2
A
171 173parallel
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There are 6 strands in AA4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
26 29first strand
Strand 2
B
35 38anti-parallel
Strand 3
B
57 59parallel
Strand 4
B
81 83parallel
Strand 5
B
105 107parallel
Strand 6
B
136 138parallel
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There are 2 strands in AA5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
67 68first strand
Strand 2
B
91 92parallel
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There are 2 strands in AA6 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
144 145first strand
Strand 2
B
171 173parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il