Analysis of interatomic Contacts of Structural Units in PDB entry:
4C20


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 4C20 entry

There are 2 chains in PDB entry 4C20 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ILE 2LYS 588
B
 HIS -16LYS 588
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 52 helices in PDB entry 4C20. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
19 43Right-handed alpha
Helix 2
2
A
62 75Right-handed alpha
Helix 3
3
A
90 95Right-handed alpha
Helix 4
4
A
114 130Right-handed alpha
Helix 5
5
A
150 171Right-handed alpha
Helix 6
6
A
185 189Right-handed 310
Helix 7
7
A
191 200Right-handed alpha
Helix 8
8
A
208 217Right-handed alpha
Helix 9
9
A
221 236Right-handed alpha
Helix 10
10
A
244 248Right-handed 310
Helix 11
11
A
250 274Right-handed alpha
Helix 12
12
A
275 281Right-handed alpha
Helix 13
13
A
285 289Right-handed 310
Helix 14
14
A
310 319Right-handed alpha
Helix 15
15
A
337 352Right-handed alpha
Helix 16
16
A
365 374Right-handed alpha
Helix 17
17
A
378 382Right-handed 310
Helix 18
18
A
395 400Right-handed 310
Helix 19
19
A
412 416Right-handed 310
Helix 20
20
A
417 427Right-handed alpha
Helix 21
21
A
481 491Right-handed alpha
Helix 22
22
A
513 520Right-handed alpha
Helix 23
23
A
533 545Right-handed alpha
Helix 24
24
A
554 558Right-handed 310
Helix 25
25
A
561 568Right-handed 310
Helix 26
26
A
571 584Right-handed alpha
Helix 27
27
B
24 43Right-handed alpha
Helix 28
28
B
62 75Right-handed alpha
Helix 29
29
B
90 95Right-handed alpha
Helix 30
30
B
114 129Right-handed alpha
Helix 31
31
B
150 171Right-handed alpha
Helix 32
32
B
185 189Right-handed 310
Helix 33
33
B
191 200Right-handed alpha
Helix 34
34
B
208 218Right-handed alpha
Helix 35
35
B
221 236Right-handed alpha
Helix 36
36
B
244 248Right-handed 310
Helix 37
37
B
250 274Right-handed alpha
Helix 38
38
B
275 281Right-handed alpha
Helix 39
39
B
285 289Right-handed 310
Helix 40
40
B
310 319Right-handed alpha
Helix 41
41
B
337 352Right-handed alpha
Helix 42
42
B
365 374Right-handed alpha
Helix 43
43
B
378 382Right-handed 310
Helix 44
44
B
395 400Right-handed 310
Helix 45
45
B
412 416Right-handed 310
Helix 46
46
B
417 427Right-handed alpha
Helix 47
47
B
481 491Right-handed alpha
Helix 48
48
B
513 520Right-handed alpha
Helix 49
49
B
533 545Right-handed alpha
Helix 50
50
B
554 558Right-handed 310
Helix 51
51
B
561 568Right-handed 310
Helix 52
52
B
571 584Right-handed alpha
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There are 11 sheets in PDB entry 4C20. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, BA, BB, BC, BD, BE, BF,

There are 5 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
53 55first strand
Strand 2
A
6 11parallel
Strand 3
A
78 85parallel
Strand 4
A
103 107parallel
Strand 5
A
134 136parallel
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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
202 206first strand
Strand 2
A
174 178parallel
Strand 3
A
292 297parallel
Strand 4
A
331 334parallel
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There are 2 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
321 322first strand
Strand 2
A
325 326anti-parallel
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There are 7 strands in AD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
356 364first strand
Strand 2
A
525 530anti-parallel
Strand 3
A
454 463anti-parallel
Strand 4
A
467 477anti-parallel
Strand 5
A
499 503anti-parallel
Strand 6
A
385 388anti-parallel
Strand 7
A
356 364first strand
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There are 2 strands in AE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
402 404first strand
Strand 2
A
407 409anti-parallel
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There are 2 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
-15 -14first strand
Strand 2
B
-8 -7anti-parallel
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There are 5 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
53 55first strand
Strand 2
B
6 11parallel
Strand 3
B
78 85parallel
Strand 4
B
103 107parallel
Strand 5
B
134 136parallel
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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
202 206first strand
Strand 2
B
174 178parallel
Strand 3
B
292 297parallel
Strand 4
B
331 334parallel
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There are 2 strands in BD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
321 322first strand
Strand 2
B
325 326anti-parallel
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There are 7 strands in BE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
356 364first strand
Strand 2
B
525 530anti-parallel
Strand 3
B
454 463anti-parallel
Strand 4
B
467 477anti-parallel
Strand 5
B
499 503anti-parallel
Strand 6
B
385 388anti-parallel
Strand 7
B
356 364first strand
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There are 2 strands in BF sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
402 404first strand
Strand 2
B
407 409anti-parallel
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