Analysis of interatomic Contacts of Structural Units in PDB entry:
4R23


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 4R23 entry

There are 2 chains in PDB entry 4R23 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LYS 522LEU 950
B
 SER 523LEU 950
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 39 helices in PDB entry 4R23. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
522 526Right-handed 310
Helix 2
2
A
560 565Right-handed alpha
Helix 3
3
A
575 580Right-handed alpha
Helix 4
4
A
580 586Right-handed alpha
Helix 5
5
A
597 601Right-handed 310
Helix 6
6
A
615 627Right-handed alpha
Helix 7
7
A
654 659Right-handed 310
Helix 8
8
A
680 683Right-handed 310
Helix 9
9
A
684 695Right-handed alpha
Helix 10
10
A
720 723Right-handed 310
Helix 11
11
A
730 736Right-handed alpha
Helix 12
12
A
738 750Right-handed alpha
Helix 13
13
A
750 761Right-handed alpha
Helix 14
14
A
780 784Right-handed 310
Helix 15
15
A
785 794Right-handed alpha
Helix 16
16
A
810 823Right-handed alpha
Helix 17
17
A
857 875Right-handed alpha
Helix 18
18
A
877 881Right-handed 310
Helix 19
19
A
897 899Right-handed 310
Helix 20
20
A
931 950Right-handed alpha
Helix 21
21
B
560 565Right-handed alpha
Helix 22
22
B
575 580Right-handed alpha
Helix 23
23
B
580 585Right-handed alpha
Helix 24
24
B
597 601Right-handed 310
Helix 25
25
B
615 627Right-handed alpha
Helix 26
26
B
653 659Right-handed 310
Helix 27
27
B
680 683Right-handed 310
Helix 28
28
B
684 695Right-handed alpha
Helix 29
29
B
720 723Right-handed 310
Helix 30
30
B
730 736Right-handed alpha
Helix 31
31
B
738 750Right-handed alpha
Helix 32
32
B
750 761Right-handed alpha
Helix 33
33
B
780 784Right-handed 310
Helix 34
34
B
785 793Right-handed alpha
Helix 35
35
B
810 823Right-handed alpha
Helix 36
36
B
857 875Right-handed alpha
Helix 37
37
B
877 881Right-handed 310
Helix 38
38
B
897 899Right-handed 310
Helix 39
39
B
931 949Right-handed alpha
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There are 12 sheets in PDB entry 4R23. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L,

There are 6 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
550 553first strand
Strand 2
A
538 544anti-parallel
Strand 3
A
531 532anti-parallel
Strand 4
A
609 612parallel
Strand 5
A
833 837anti-parallel
Strand 6
A
843 846anti-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
566 568first strand
Strand 2
A
572 574anti-parallel
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There are 5 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
643 649first strand
Strand 2
A
630 636anti-parallel
Strand 3
A
916 923anti-parallel
Strand 4
A
901 909anti-parallel
Strand 5
A
888 895anti-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
703 705first strand
Strand 2
A
727 729anti-parallel
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There are 2 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
709 712first strand
Strand 2
A
715 718anti-parallel
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There are 2 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
826 828first strand
Strand 2
A
851 854anti-parallel
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There are 6 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
550 553first strand
Strand 2
B
538 544anti-parallel
Strand 3
B
531 532anti-parallel
Strand 4
B
609 612parallel
Strand 5
B
833 837anti-parallel
Strand 6
B
843 846anti-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
566 568first strand
Strand 2
B
572 574anti-parallel
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There are 5 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
643 649first strand
Strand 2
B
630 636anti-parallel
Strand 3
B
916 923anti-parallel
Strand 4
B
901 909anti-parallel
Strand 5
B
888 895anti-parallel
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There are 2 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
703 705first strand
Strand 2
B
727 729anti-parallel
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There are 2 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
709 712first strand
Strand 2
B
715 718anti-parallel
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There are 2 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
826 828first strand
Strand 2
B
851 854anti-parallel
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