Analysis of interatomic Contacts of Structural Units in PDB entry:
4L23


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 4L23 entry

There are 2 chains in PDB entry 4L23 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLY 8PHE 1059
B
 MET 322LEU 598
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 53 helices in PDB entry 4L23. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
41 54Right-handed alpha
Helix 2
2
A
64 68Right-handed 310
Helix 3
3
A
88 92Right-handed 310
Helix 4
4
A
107 122Right-handed alpha
Helix 5
5
A
125 131Right-handed alpha
Helix 6
6
A
133 143Right-handed alpha
Helix 7
7
A
143 154Right-handed alpha
Helix 8
8
A
159 167Right-handed alpha
Helix 9
9
A
178 183Right-handed alpha
Helix 10
10
A
216 227Right-handed alpha
Helix 11
11
A
239 246Right-handed alpha
Helix 12
12
A
266 269Right-handed 310
Helix 13
13
A
270 279Right-handed alpha
Helix 14
14
A
290 295Right-handed alpha
Helix 15
15
A
328 330Right-handed 310
Helix 16
16
A
394 396Right-handed 310
Helix 17
17
A
488 503Right-handed alpha
Helix 18
18
A
516 521Right-handed alpha
Helix 19
19
A
524 535Right-handed alpha
Helix 20
20
A
544 554Right-handed alpha
Helix 21
21
A
557 563Right-handed 310
Helix 22
22
A
564 572Right-handed alpha
Helix 23
23
A
576 590Right-handed alpha
Helix 24
24
A
594 599Right-handed alpha
Helix 25
25
A
600 603Right-handed 310
Helix 26
26
A
608 623Right-handed alpha
Helix 27
27
A
624 639Right-handed alpha
Helix 28
28
A
647 660Right-handed alpha
Helix 29
29
A
660 673Right-handed alpha
Helix 30
30
A
680 695Right-handed alpha
Helix 31
31
A
697 722Right-handed alpha
Helix 32
32
A
727 740Right-handed alpha
Helix 33
33
A
741 749Right-handed alpha
Helix 34
34
A
765 769Right-handed 310
Helix 35
35
A
789 793Right-handed 310
Helix 36
36
A
807 826Right-handed alpha
Helix 37
37
A
857 862Right-handed alpha
Helix 38
38
A
875 886Right-handed alpha
Helix 39
39
A
889 912Right-handed alpha
Helix 40
40
A
957 965Right-handed alpha
Helix 41
41
A
974 994Right-handed alpha
Helix 42
42
A
994 1004Right-handed alpha
Helix 43
43
A
1015 1020Right-handed alpha
Helix 44
44
A
1020 1026Right-handed alpha
Helix 45
45
A
1031 1047Right-handed alpha
Helix 46
46
B
322 326Right-handed 310
Helix 47
47
B
327 331Right-handed 310
Helix 48
48
B
339 348Right-handed alpha
Helix 49
49
B
400 411Right-handed alpha
Helix 50
50
B
431 437Right-handed alpha
Helix 51
51
B
441 513Right-handed alpha
Helix 52
52
B
520 586Right-handed alpha
Helix 53
53
B
590 598Right-handed alpha
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There are 10 sheets in PDB entry 4L23. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J,

There are 2 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
19 21first strand
Strand 2
A
35 37anti-parallel
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There are 5 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
31 32first strand
Strand 2
A
23 25anti-parallel
Strand 3
A
98 102parallel
Strand 4
A
69 73anti-parallel
Strand 5
A
79 82anti-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
204 212first strand
Strand 2
A
189 197anti-parallel
Strand 3
A
284 289parallel
Strand 4
A
250 254anti-parallel
Strand 5
A
260 261anti-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
325 326first strand
Strand 2
A
484 485parallel
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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
A
382 392first strand
Strand 2
A
333 341anti-parallel
Strand 3
A
472 477anti-parallel
Strand 4
A
439 444anti-parallel
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There are 4 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
365 366first strand
Strand 2
A
353 362anti-parallel
Strand 3
A
401 409anti-parallel
Strand 4
A
419 428anti-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
A
751 752first strand
Strand 2
A
760 761anti-parallel
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There are 5 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
770 771first strand
Strand 2
A
779 784anti-parallel
Strand 3
A
796 803anti-parallel
Strand 4
A
845 849anti-parallel
Strand 5
A
838 842anti-parallel
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There are 3 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
854 856first strand
Strand 2
A
921 924anti-parallel
Strand 3
A
929 931anti-parallel
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There are 5 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
389 391first strand
Strand 2
B
377 386anti-parallel
Strand 3
B
368 374anti-parallel
Strand 4
B
354 359anti-parallel
Strand 5
B
426 427parallel
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