Analysis of interatomic Contacts of Structural Units in PDB entry:
4R21


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 4R21 entry

There are 2 chains in PDB entry 4R21 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ASN 53ARG 494
B
 ASN 53PRO 493
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 35 helices in PDB entry 4R21. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
55 65Right-handed alpha
Helix 2
2
A
85 94Right-handed alpha
Helix 3
3
A
106 113Right-handed alpha
Helix 4
4
A
125 144Right-handed alpha
Helix 5
5
A
147 168Right-handed alpha
Helix 6
6
A
175 192Right-handed alpha
Helix 7
7
A
199 219Right-handed alpha
Helix 8
8
A
235 260Right-handed alpha
Helix 9
9
A
268 279Right-handed alpha
Helix 10
10
A
288 321Right-handed alpha
Helix 11
11
A
321 336Right-handed alpha
Helix 12
12
A
343 349Right-handed 310
Helix 13
13
A
350 364Right-handed alpha
Helix 14
14
A
395 402Right-handed alpha
Helix 15
15
A
413 418Right-handed 310
Helix 16
16
A
435 439Right-handed 310
Helix 17
17
A
442 460Right-handed alpha
Helix 18
18
B
55 67Right-handed alpha
Helix 19
19
B
85 94Right-handed alpha
Helix 20
20
B
106 114Right-handed alpha
Helix 21
21
B
125 141Right-handed alpha
Helix 22
22
B
147 166Right-handed alpha
Helix 23
23
B
175 192Right-handed alpha
Helix 24
24
B
199 218Right-handed alpha
Helix 25
25
B
236 260Right-handed alpha
Helix 26
26
B
268 279Right-handed alpha
Helix 27
27
B
289 302Right-handed alpha
Helix 28
28
B
305 321Right-handed alpha
Helix 29
29
B
321 336Right-handed alpha
Helix 30
30
B
343 347Right-handed 310
Helix 31
31
B
350 364Right-handed alpha
Helix 32
32
B
395 402Right-handed alpha
Helix 33
33
B
413 418Right-handed 310
Helix 34
34
B
435 439Right-handed 310
Helix 35
35
B
442 461Right-handed alpha
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There are 8 sheets in PDB entry 4R21. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

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
A
70 75first strand
Strand 2
A
78 83anti-parallel
Strand 3
A
391 394parallel
Strand 4
A
373 374anti-parallel
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There are 2 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
379 381first strand
Strand 2
A
384 386anti-parallel
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There are 2 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
461 464first strand
Strand 2
A
490 493anti-parallel
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There are 2 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
477 478first strand
Strand 2
A
482 483anti-parallel
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There are 4 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
70 75first strand
Strand 2
B
78 83anti-parallel
Strand 3
B
391 394parallel
Strand 4
B
373 374anti-parallel
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There are 3 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
172 173first strand
Strand 2
B
488 491anti-parallel
Strand 3
B
463 464anti-parallel
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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
379 381first strand
Strand 2
B
384 386anti-parallel
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There are 2 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
477 478first strand
Strand 2
B
482 483anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il