Analysis of interatomic Contacts of Structural Units in PDB entry:
3EQN


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 3EQN entry

There are 2 chains in PDB entry 3EQN (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 LEU 1ASN 752
B
 LEU 1ASN 752
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 24 helices in PDB entry 3EQN. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
20 25Right-handed alpha
Helix 2
2
A
47 50Right-handed 310
Helix 3
3
A
59 69Right-handed alpha
Helix 4
4
A
136 140Right-handed 310
Helix 5
5
A
144 148Right-handed 310
Helix 6
6
A
368 372Right-handed 310
Helix 7
7
A
390 392Right-handed 310
Helix 8
8
A
410 422Right-handed alpha
Helix 9
9
A
460 464Right-handed 310
Helix 10
10
A
545 548Right-handed 310
Helix 11
11
A
690 694Right-handed 310
Helix 12
12
A
736 738Right-handed 310
Helix 13
13
B
20 25Right-handed alpha
Helix 14
14
B
47 50Right-handed 310
Helix 15
15
B
59 69Right-handed alpha
Helix 16
16
B
136 140Right-handed 310
Helix 17
17
B
144 148Right-handed 310
Helix 18
18
B
368 372Right-handed 310
Helix 19
19
B
390 392Right-handed 310
Helix 20
20
B
410 422Right-handed alpha
Helix 21
21
B
460 464Right-handed 310
Helix 22
22
B
545 548Right-handed 310
Helix 23
23
B
690 694Right-handed 310
Helix 24
24
B
736 738Right-handed 310
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There are 16 sheets in PDB entry 3EQN. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P,

There are 18 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
43 45first strand
Strand 2
A
85 89parallel
Strand 3
A
106 110parallel
Strand 4
A
151 159parallel
Strand 5
A
178 186parallel
Strand 6
A
207 214parallel
Strand 7
A
228 235parallel
Strand 8
A
249 257parallel
Strand 9
A
280 289parallel
Strand 10
A
308 325parallel
Strand 11
A
293 297parallel
Strand 12
A
261 265parallel
Strand 13
A
239 245parallel
Strand 14
A
218 223parallel
Strand 15
A
195 200parallel
Strand 16
A
167 171parallel
Strand 17
A
130 131parallel
Strand 18
A
100 101parallel
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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
A
43 45first strand
Strand 2
A
85 89parallel
Strand 3
A
106 110parallel
Strand 4
A
151 159parallel
Strand 5
A
117 120parallel
Strand 6
A
93 96parallel
Strand 7
A
54 58parallel
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There are 11 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
352 361first strand
Strand 2
A
330 349anti-parallel
Strand 3
A
308 325anti-parallel
Strand 4
A
293 297parallel
Strand 5
A
261 265parallel
Strand 6
A
239 245parallel
Strand 7
A
218 223parallel
Strand 8
A
195 200parallel
Strand 9
A
167 171parallel
Strand 10
A
130 131parallel
Strand 11
A
100 101parallel
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There are 22 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
43 45first strand
Strand 2
A
85 89parallel
Strand 3
A
106 110parallel
Strand 4
A
151 159parallel
Strand 5
A
178 186parallel
Strand 6
A
207 214parallel
Strand 7
A
228 235parallel
Strand 8
A
249 257parallel
Strand 9
A
280 289parallel
Strand 10
A
308 325parallel
Strand 11
A
330 349anti-parallel
Strand 12
A
744 750parallel
Strand 13
A
711 719anti-parallel
Strand 14
A
672 682parallel
Strand 15
A
623 633parallel
Strand 16
A
602 610parallel
Strand 17
A
564 567parallel
Strand 18
A
517 520parallel
Strand 19
A
484 487parallel
Strand 20
A
447 449parallel
Strand 21
A
426 428parallel
Strand 22
A
394 396parallel
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There are 9 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
524 526first strand
Strand 2
A
570 573parallel
Strand 3
A
602 610parallel
Strand 4
A
564 567parallel
Strand 5
A
517 520parallel
Strand 6
A
484 487parallel
Strand 7
A
447 449parallel
Strand 8
A
426 428parallel
Strand 9
A
394 396parallel
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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
405 409first strand
Strand 2
A
432 436parallel
Strand 3
A
454 458parallel
Strand 4
A
490 493parallel
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There are 10 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
440 442first strand
Strand 2
A
470 475parallel
Strand 3
A
500 505parallel
Strand 4
A
550 558parallel
Strand 5
A
589 596parallel
Strand 6
A
615 620parallel
Strand 7
A
664 669parallel
Strand 8
A
703 705parallel
Strand 9
A
721 727parallel
Strand 10
A
699 701parallel
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There are 10 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
440 442first strand
Strand 2
A
470 475parallel
Strand 3
A
500 505parallel
Strand 4
A
550 558parallel
Strand 5
A
589 596parallel
Strand 6
A
615 620parallel
Strand 7
A
664 669parallel
Strand 8
A
703 705parallel
Strand 9
A
721 727parallel
Strand 10
A
730 734anti-parallel
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There are 18 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
43 45first strand
Strand 2
B
85 89parallel
Strand 3
B
106 110parallel
Strand 4
B
151 159parallel
Strand 5
B
178 186parallel
Strand 6
B
207 214parallel
Strand 7
B
228 235parallel
Strand 8
B
249 257parallel
Strand 9
B
280 289parallel
Strand 10
B
308 325parallel
Strand 11
B
293 297parallel
Strand 12
B
261 265parallel
Strand 13
B
239 245parallel
Strand 14
B
218 223parallel
Strand 15
B
195 200parallel
Strand 16
B
167 171parallel
Strand 17
B
130 131parallel
Strand 18
B
100 101parallel
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There are 7 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
43 45first strand
Strand 2
B
85 89parallel
Strand 3
B
106 110parallel
Strand 4
B
151 159parallel
Strand 5
B
117 120parallel
Strand 6
B
93 96parallel
Strand 7
B
54 58parallel
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There are 11 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
356 361first strand
Strand 2
B
330 349anti-parallel
Strand 3
B
308 325anti-parallel
Strand 4
B
293 297parallel
Strand 5
B
261 265parallel
Strand 6
B
239 245parallel
Strand 7
B
218 223parallel
Strand 8
B
195 200parallel
Strand 9
B
167 171parallel
Strand 10
B
130 131parallel
Strand 11
B
100 101parallel
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There are 22 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
43 45first strand
Strand 2
B
85 89parallel
Strand 3
B
106 110parallel
Strand 4
B
151 159parallel
Strand 5
B
178 186parallel
Strand 6
B
207 214parallel
Strand 7
B
228 235parallel
Strand 8
B
249 257parallel
Strand 9
B
280 289parallel
Strand 10
B
308 325parallel
Strand 11
B
330 349anti-parallel
Strand 12
B
744 750parallel
Strand 13
B
711 719anti-parallel
Strand 14
B
672 682parallel
Strand 15
B
623 633parallel
Strand 16
B
602 610parallel
Strand 17
B
564 567parallel
Strand 18
B
517 520parallel
Strand 19
B
484 487parallel
Strand 20
B
447 449parallel
Strand 21
B
426 428parallel
Strand 22
B
394 396parallel
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There are 9 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
524 526first strand
Strand 2
B
570 573parallel
Strand 3
B
602 610parallel
Strand 4
B
564 567parallel
Strand 5
B
517 520parallel
Strand 6
B
484 487parallel
Strand 7
B
447 449parallel
Strand 8
B
426 428parallel
Strand 9
B
394 396parallel
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There are 4 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
405 409first strand
Strand 2
B
432 436parallel
Strand 3
B
454 458parallel
Strand 4
B
490 493parallel
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There are 10 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
440 442first strand
Strand 2
B
470 475parallel
Strand 3
B
500 505parallel
Strand 4
B
550 558parallel
Strand 5
B
589 596parallel
Strand 6
B
615 620parallel
Strand 7
B
664 669parallel
Strand 8
B
703 705parallel
Strand 9
B
721 727parallel
Strand 10
B
699 701parallel
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There are 10 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
440 442first strand
Strand 2
B
470 475parallel
Strand 3
B
500 505parallel
Strand 4
B
550 558parallel
Strand 5
B
589 596parallel
Strand 6
B
615 620parallel
Strand 7
B
664 669parallel
Strand 8
B
703 705parallel
Strand 9
B
721 727parallel
Strand 10
B
730 734anti-parallel
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