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


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 4XRN entry

There are 4 chains in PDB entry 4XRN (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLY 3SER 106
B
 SER 4SER 106
C
 GLY 3GLY 110
D
 GLY 1SER 106
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 4XRN. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
A
93 105Right-handed alpha
Helix 2
AA2
B
93 106Right-handed alpha
Helix 3
AA3
C
22 24Right-handed 310
Helix 4
AA4
C
93 108Right-handed alpha
Helix 5
AA5
D
22 24Right-handed 310
Helix 6
AA6
D
93 105Right-handed alpha
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There are 4 sheets in PDB entry 4XRN. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4,

There are 7 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
15 20first strand
Strand 2
A
26 34anti-parallel
Strand 3
A
38 42anti-parallel
Strand 4
A
84 90anti-parallel
Strand 5
A
65 79anti-parallel
Strand 6
A
53 62anti-parallel
Strand 7
A
15 20anti-parallel
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There are 7 strands in AA2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
16 20first strand
Strand 2
B
26 34anti-parallel
Strand 3
B
38 42anti-parallel
Strand 4
B
84 90anti-parallel
Strand 5
B
65 78anti-parallel
Strand 6
B
53 62anti-parallel
Strand 7
B
16 20anti-parallel
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There are 7 strands in AA3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
16 20first strand
Strand 2
C
26 34anti-parallel
Strand 3
C
38 42anti-parallel
Strand 4
C
84 90anti-parallel
Strand 5
C
65 78anti-parallel
Strand 6
C
53 62anti-parallel
Strand 7
C
16 20anti-parallel
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There are 7 strands in AA4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
16 20first strand
Strand 2
D
26 35anti-parallel
Strand 3
D
38 42anti-parallel
Strand 4
D
84 90anti-parallel
Strand 5
D
65 78anti-parallel
Strand 6
D
53 62anti-parallel
Strand 7
D
16 20anti-parallel
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