Analysis of interatomic Contacts of Structural Units in PDB entry:
2C21


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 2C21 entry

There are 6 chains in PDB entry 2C21 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 3ALA 141
B
 SER 3ALA 141
C
 SER 3ALA 141
D
 SER 3ALA 141
E
 SER 3ALA 141
F
 SER 3ALA 141
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 23 helices in PDB entry 2C21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
15 26Right-handed alpha
Helix 2
2
A
38 40Right-handed 310
Helix 3
3
A
84 95Right-handed alpha
Helix 4
4
A
124 138Right-handed alpha
Helix 5
5
B
15 26Right-handed alpha
Helix 6
6
B
38 40Right-handed 310
Helix 7
7
B
84 95Right-handed alpha
Helix 8
8
B
124 138Right-handed alpha
Helix 9
9
C
15 26Right-handed alpha
Helix 10
10
C
38 40Right-handed 310
Helix 11
11
C
84 95Right-handed alpha
Helix 12
12
C
124 138Right-handed alpha
Helix 13
13
D
15 26Right-handed alpha
Helix 14
14
D
38 40Right-handed 310
Helix 15
15
D
84 95Right-handed alpha
Helix 16
16
D
124 138Right-handed alpha
Helix 17
17
E
15 26Right-handed alpha
Helix 18
18
E
38 40Right-handed 310
Helix 19
19
E
84 95Right-handed alpha
Helix 20
20
E
124 138Right-handed alpha
Helix 21
21
F
15 26Right-handed alpha
Helix 22
22
F
84 94Right-handed alpha
Helix 23
23
F
124 138Right-handed alpha
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There are 6 sheets in PDB entry 2C21. Click on sheet of interest to get list of strands forming it: AA, AB, CA, CB, EA, EB,

There are 8 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
30 37first strand
Strand 2
A
42 48anti-parallel
Strand 3
A
57 63anti-parallel
Strand 4
A
5 12parallel
Strand 5
B
75 82anti-parallel
Strand 6
B
118 123parallel
Strand 7
B
108 112anti-parallel
Strand 8
B
99 102anti-parallel
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There are 8 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
99 102first strand
Strand 2
A
108 112anti-parallel
Strand 3
A
118 123anti-parallel
Strand 4
A
75 82parallel
Strand 5
B
5 12anti-parallel
Strand 6
B
57 63parallel
Strand 7
B
42 48anti-parallel
Strand 8
B
30 37anti-parallel
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There are 8 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
30 37first strand
Strand 2
C
42 48anti-parallel
Strand 3
C
57 63anti-parallel
Strand 4
C
5 12parallel
Strand 5
D
75 82anti-parallel
Strand 6
D
118 123parallel
Strand 7
D
108 112anti-parallel
Strand 8
D
99 102anti-parallel
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There are 8 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
99 102first strand
Strand 2
C
108 112anti-parallel
Strand 3
C
118 123anti-parallel
Strand 4
C
75 82parallel
Strand 5
D
5 12anti-parallel
Strand 6
D
57 63parallel
Strand 7
D
42 48anti-parallel
Strand 8
D
30 37anti-parallel
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There are 8 strands in EA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
30 37first strand
Strand 2
E
42 48anti-parallel
Strand 3
E
57 63anti-parallel
Strand 4
E
5 12parallel
Strand 5
F
75 82anti-parallel
Strand 6
F
118 123parallel
Strand 7
F
108 112anti-parallel
Strand 8
F
99 102anti-parallel
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There are 8 strands in EB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
99 102first strand
Strand 2
E
108 112anti-parallel
Strand 3
E
118 123anti-parallel
Strand 4
E
75 82parallel
Strand 5
F
5 12anti-parallel
Strand 6
F
57 63parallel
Strand 7
F
42 48anti-parallel
Strand 8
F
30 37anti-parallel
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