Analysis of interatomic Contacts of Structural Units in PDB entry:
4E21


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 4E21 entry

There are 2 chains in PDB entry 4E21 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 0ARG 326
B
 SER 0PHE 329
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 42 helices in PDB entry 4E21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
9 22Right-handed alpha
Helix 2
2
A
32 41Right-handed alpha
Helix 3
3
A
49 57Right-handed alpha
Helix 4
4
A
68 70Right-handed 310
Helix 5
5
A
71 80Right-handed alpha
Helix 6
6
A
81 83Right-handed 310
Helix 7
7
A
96 109Right-handed alpha
Helix 8
8
A
121 123Right-handed 310
Helix 9
9
A
124 129Right-handed alpha
Helix 10
10
A
137 144Right-handed alpha
Helix 11
11
A
144 152Right-handed alpha
Helix 12
12
A
154 158Right-handed 310
Helix 13
13
A
163 167Right-handed 310
Helix 14
14
A
170 173Right-handed 310
Helix 15
15
A
182 211Right-handed alpha
Helix 16
16
A
230 234Right-handed 310
Helix 17
17
A
239 248Right-handed alpha
Helix 18
18
A
255 268Right-handed alpha
Helix 19
19
A
282 295Right-handed alpha
Helix 20
20
A
298 312Right-handed alpha
Helix 21
21
A
315 326Right-handed alpha
Helix 22
22
B
9 22Right-handed alpha
Helix 23
23
B
32 42Right-handed alpha
Helix 24
24
B
49 57Right-handed alpha
Helix 25
25
B
68 70Right-handed 310
Helix 26
26
B
71 80Right-handed alpha
Helix 27
27
B
81 83Right-handed 310
Helix 28
28
B
96 109Right-handed alpha
Helix 29
29
B
121 123Right-handed 310
Helix 30
30
B
124 129Right-handed alpha
Helix 31
31
B
137 144Right-handed alpha
Helix 32
32
B
144 152Right-handed alpha
Helix 33
33
B
154 158Right-handed 310
Helix 34
34
B
163 167Right-handed 310
Helix 35
35
B
170 173Right-handed 310
Helix 36
36
B
182 211Right-handed alpha
Helix 37
37
B
230 234Right-handed 310
Helix 38
38
B
239 248Right-handed alpha
Helix 39
39
B
255 268Right-handed alpha
Helix 40
40
B
282 295Right-handed alpha
Helix 41
41
B
298 312Right-handed alpha
Helix 42
42
B
315 329Right-handed alpha
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There are 2 sheets in PDB entry 4E21. Click on sheet of interest to get list of strands forming it: A, B,

There are 7 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
25 29first strand
Strand 2
A
2 6parallel
Strand 3
A
62 65parallel
Strand 4
A
88 91parallel
Strand 5
A
113 120parallel
Strand 6
A
131 135anti-parallel
Strand 7
A
175 179parallel
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There are 7 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
25 29first strand
Strand 2
B
2 6parallel
Strand 3
B
62 65parallel
Strand 4
B
88 91parallel
Strand 5
B
113 120parallel
Strand 6
B
131 135anti-parallel
Strand 7
B
175 179parallel
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