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


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 3SQO entry

There are 4 chains in PDB entry 3SQO (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 153SER 681
H
 GLN 1ARG 217
L
 ILE 2SER 214
P
 THR 61GLN 152
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 19 helices in PDB entry 3SQO. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
155 162Right-handed alpha
Helix 2
2
A
219 236Right-handed alpha
Helix 3
3
A
261 278Right-handed alpha
Helix 4
4
A
294 308Right-handed alpha
Helix 5
5
A
321 323Right-handed 310
Helix 6
6
A
384 403Right-handed alpha
Helix 7
7
A
407 418Right-handed alpha
Helix 8
8
A
425 429Right-handed 310
Helix 9
9
A
430 434Right-handed 310
Helix 10
10
H
28 32Right-handed 310
Helix 11
11
H
52 55Right-handed 310
Helix 12
12
H
83 87Right-handed 310
Helix 13
13
L
79 83Right-handed 310
Helix 14
14
L
121 127Right-handed alpha
Helix 15
15
L
183 188Right-handed alpha
Helix 16
16
P
69 71Right-handed 310
Helix 17
17
P
87 104Right-handed alpha
Helix 18
18
P
127 129Right-handed 310
Helix 19
19
P
130 135Right-handed alpha
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There are 23 sheets in PDB entry 3SQO. 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, Q, R, S, T, U, V, W,

There are 7 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
200 206first strand
Strand 2
A
246 251parallel
Strand 3
A
181 186parallel
Strand 4
A
283 287parallel
Strand 5
A
310 314parallel
Strand 6
A
334 339parallel
Strand 7
A
361 364parallel
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There are 3 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
258 260first strand
Strand 2
P
140 151anti-parallel
Strand 3
P
63 65parallel
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There are 6 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
325 326first strand
Strand 2
A
289 292anti-parallel
Strand 3
P
140 151anti-parallel
Strand 4
P
73 82anti-parallel
Strand 5
P
121 125anti-parallel
Strand 6
P
110 115anti-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
368 371first strand
Strand 2
A
379 382anti-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
420 421first strand
Strand 2
A
440 441anti-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
A
457 461first strand
Strand 2
A
521 527anti-parallel
Strand 3
A
482 489anti-parallel
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There are 3 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
473 475first strand
Strand 2
A
507 513anti-parallel
Strand 3
A
495 502anti-parallel
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There are 3 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
532 539first strand
Strand 2
A
595 602anti-parallel
Strand 3
A
557 565anti-parallel
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There are 2 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
548 551first strand
Strand 2
A
587 590anti-parallel
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There are 3 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
607 616first strand
Strand 2
A
671 680anti-parallel
Strand 3
A
631 637anti-parallel
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There are 3 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
621 625first strand
Strand 2
A
653 658anti-parallel
Strand 3
A
644 650anti-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
H
3 6first strand
Strand 2
H
22 25anti-parallel
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There are 6 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
10 12first strand
Strand 2
H
107 111parallel
Strand 3
H
88 95anti-parallel
Strand 4
H
33 40anti-parallel
Strand 5
H
44 51anti-parallel
Strand 6
H
57 59anti-parallel
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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
H
10 12first strand
Strand 2
H
107 111parallel
Strand 3
H
88 95anti-parallel
Strand 4
H
102 103anti-parallel
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There are 3 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
18 20first strand
Strand 2
H
77 82anti-parallel
Strand 3
H
68 72anti-parallel
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There are 4 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
124 128first strand
Strand 2
H
141 149anti-parallel
Strand 3
H
180 187anti-parallel
Strand 4
H
167 169anti-parallel
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There are 4 strands in Q sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
124 128first strand
Strand 2
H
141 149anti-parallel
Strand 3
H
180 187anti-parallel
Strand 4
H
173 174anti-parallel
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There are 3 strands in R sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
155 158first strand
Strand 2
H
198 204anti-parallel
Strand 3
H
209 215anti-parallel
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There are 4 strands in S sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
4 7first strand
Strand 2
L
19 25anti-parallel
Strand 3
L
70 75anti-parallel
Strand 4
L
62 67anti-parallel
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There are 6 strands in T sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 14first strand
Strand 2
L
102 107parallel
Strand 3
L
85 90anti-parallel
Strand 4
L
33 38anti-parallel
Strand 5
L
45 49anti-parallel
Strand 6
L
53 54anti-parallel
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There are 4 strands in U sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 14first strand
Strand 2
L
102 107parallel
Strand 3
L
85 90anti-parallel
Strand 4
L
97 98anti-parallel
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There are 4 strands in V sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
114 118first strand
Strand 2
L
129 139anti-parallel
Strand 3
L
173 182anti-parallel
Strand 4
L
159 163anti-parallel
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There are 4 strands in W sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
153 154first strand
Strand 2
L
145 150anti-parallel
Strand 3
L
191 197anti-parallel
Strand 4
L
205 210anti-parallel
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