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


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 4QHN entry

There are 2 chains in PDB entry 4QHN (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 VAL 2SER 215
B
 GLU 3THR 209
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 6 helices in PDB entry 4QHN. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
83 87Right-handed 310
Helix 2
2
A
156 158Right-handed 310
Helix 3
3
A
201 204Right-handed 310
Helix 4
4
B
79 83Right-handed 310
Helix 5
5
B
121 127Right-handed alpha
Helix 6
6
B
181 188Right-handed alpha
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There are 10 sheets in PDB entry 4QHN. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J,

There are 4 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
5 7first strand
Strand 2
A
17 23anti-parallel
Strand 3
A
77 82anti-parallel
Strand 4
A
67 72anti-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
A
11 13first strand
Strand 2
A
107 112parallel
Strand 3
A
88 96anti-parallel
Strand 4
A
32 40anti-parallel
Strand 5
A
44 51anti-parallel
Strand 6
A
57 59anti-parallel
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There are 4 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
120 127first strand
Strand 2
A
136 145anti-parallel
Strand 3
A
176 184anti-parallel
Strand 4
A
163 165anti-parallel
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There are 3 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
151 154first strand
Strand 2
A
195 200anti-parallel
Strand 3
A
205 210anti-parallel
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There are 5 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
9 11first strand
Strand 2
B
102 104parallel
Strand 3
B
84 92anti-parallel
Strand 4
B
34 38anti-parallel
Strand 5
B
45 48anti-parallel
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There are 4 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
9 11first strand
Strand 2
B
102 104parallel
Strand 3
B
84 92anti-parallel
Strand 4
B
95 98anti-parallel
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There are 3 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
19 23first strand
Strand 2
B
71 75anti-parallel
Strand 3
B
62 63anti-parallel
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There are 4 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
114 118first strand
Strand 2
B
130 139anti-parallel
Strand 3
B
172 180anti-parallel
Strand 4
B
159 161anti-parallel
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There are 4 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
114 118first strand
Strand 2
B
130 139anti-parallel
Strand 3
B
172 180anti-parallel
Strand 4
B
165 166anti-parallel
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There are 4 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
153 155first strand
Strand 2
B
144 150anti-parallel
Strand 3
B
191 197anti-parallel
Strand 4
B
200 206anti-parallel
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