Analysis of interatomic Contacts of Structural Units in PDB entry:
2X2S


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 2X2S entry

There are 4 chains in PDB entry 2X2S (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLY 2LYS 153
B
 GLY 2LYS 153
C
 GLY 2LYS 153
D
 GLY 2LYS 153
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 16 helices in PDB entry 2X2S. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
44 47Right-handed 310
Helix 2
2
A
92 95Right-handed 310
Helix 3
3
A
116 120Right-handed 310
Helix 4
4
A
143 147Right-handed 310
Helix 5
5
B
44 47Right-handed 310
Helix 6
6
B
92 95Right-handed 310
Helix 7
7
B
116 120Right-handed 310
Helix 8
8
B
143 147Right-handed 310
Helix 9
9
C
44 47Right-handed 310
Helix 10
10
C
92 95Right-handed 310
Helix 11
11
C
116 120Right-handed 310
Helix 12
12
C
143 147Right-handed 310
Helix 13
13
D
44 47Right-handed 310
Helix 14
14
D
92 95Right-handed 310
Helix 15
15
D
116 120Right-handed 310
Helix 16
16
D
143 147Right-handed 310
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There are 12 sheets in PDB entry 2X2S. Click on sheet of interest to get list of strands forming it: AA, AB, AC, BA, BB, BC, CA, CB, CC, A, DB, C,

There are 4 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
62 67first strand
Strand 2
A
49 55anti-parallel
Strand 3
A
7 13anti-parallel
Strand 4
A
148 153anti-parallel
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There are 4 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
19 23first strand
Strand 2
A
32 38anti-parallel
Strand 3
A
81 85anti-parallel
Strand 4
A
73 77anti-parallel
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There are 4 strands in AC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
97 101first strand
Strand 2
A
110 114anti-parallel
Strand 3
A
121 124anti-parallel
Strand 4
A
135 138anti-parallel
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There are 4 strands in BA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
62 67first strand
Strand 2
B
49 55anti-parallel
Strand 3
B
7 13anti-parallel
Strand 4
B
148 153anti-parallel
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There are 4 strands in BB 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
32 38anti-parallel
Strand 3
B
81 85anti-parallel
Strand 4
B
73 77anti-parallel
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There are 4 strands in BC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
97 101first strand
Strand 2
B
110 114anti-parallel
Strand 3
B
121 124anti-parallel
Strand 4
B
135 138anti-parallel
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There are 4 strands in CA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
62 67first strand
Strand 2
C
49 55anti-parallel
Strand 3
C
7 13anti-parallel
Strand 4
C
148 153anti-parallel
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There are 4 strands in CB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
19 23first strand
Strand 2
C
32 38anti-parallel
Strand 3
C
81 85anti-parallel
Strand 4
C
73 77anti-parallel
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There are 4 strands in CC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
97 101first strand
Strand 2
C
110 114anti-parallel
Strand 3
C
121 124anti-parallel
Strand 4
C
135 138anti-parallel
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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
D
62 67first strand
Strand 2
D
49 55anti-parallel
Strand 3
D
7 13anti-parallel
Strand 4
D
148 153anti-parallel
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There are 4 strands in DB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
19 23first strand
Strand 2
D
32 38anti-parallel
Strand 3
D
81 85anti-parallel
Strand 4
D
73 77anti-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
D
97 101first strand
Strand 2
D
110 114anti-parallel
Strand 3
D
121 124anti-parallel
Strand 4
D
135 138anti-parallel
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