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


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 1CHQ entry

There are 5 chains in PDB entry 1CHQ (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
D
 THR 1ASN 103
E
 THR 1ASN 103
F
 THR 1ASN 103
G
 THR 1ASN 103
H
 THR 1ASN 103
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 1CHQ. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
DA1
D
5 9Right-handed alpha
Helix 2
DA2
D
59 78Right-handed alpha
Helix 3
EA1
E
5 9Right-handed alpha
Helix 4
EA2
E
62 78Right-handed alpha
Helix 5
FA1
F
5 9Right-handed alpha
Helix 6
FA2
F
59 78Right-handed alpha
Helix 7
GA1
G
5 9Right-handed alpha
Helix 8
HA2
G
61 78Right-handed alpha
Helix 9
GA1
H
5 9Right-handed alpha
Helix 10
HA2
H
60 78Right-handed alpha
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There are 5 sheets in PDB entry 1CHQ. Click on sheet of interest to get list of strands forming it: BB1, BB2, BB3, BB4, BB5,

There are 6 strands in BB1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
15 22first strand
Strand 2
D
82 88anti-parallel
Strand 3
D
94 102anti-parallel
Strand 4
E
26 30anti-parallel
Strand 5
E
37 41anti-parallel
Strand 6
E
47 50anti-parallel
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There are 6 strands in BB2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
15 22first strand
Strand 2
E
82 88anti-parallel
Strand 3
E
94 102anti-parallel
Strand 4
F
26 30anti-parallel
Strand 5
F
37 41anti-parallel
Strand 6
F
47 50anti-parallel
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There are 6 strands in BB3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
15 22first strand
Strand 2
F
82 88anti-parallel
Strand 3
F
94 102anti-parallel
Strand 4
G
26 30anti-parallel
Strand 5
G
37 41anti-parallel
Strand 6
G
47 50anti-parallel
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There are 6 strands in BB4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
G
15 22first strand
Strand 2
G
82 88anti-parallel
Strand 3
G
94 102anti-parallel
Strand 4
H
26 30anti-parallel
Strand 5
H
37 41anti-parallel
Strand 6
H
47 50anti-parallel
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There are 6 strands in BB5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
15 22first strand
Strand 2
H
82 88anti-parallel
Strand 3
H
94 102anti-parallel
Strand 4
D
26 30anti-parallel
Strand 5
D
37 41anti-parallel
Strand 6
D
47 50anti-parallel
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