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


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 4ERS entry

There are 3 chains in PDB entry 4ERS (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
L
 ASP 1CYS 214
H
 GLN 215CYS 445
A
 VAL 28MET 123
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 11 helices in PDB entry 4ERS. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
L
121 126Right-handed alpha
Helix 2
2
L
183 187Right-handed alpha
Helix 3
3
H
242 246Right-handed 310
Helix 4
4
H
276 279Right-handed 310
Helix 5
5
H
288 290Right-handed 310
Helix 6
6
H
301 305Right-handed 310
Helix 7
7
H
385 387Right-handed 310
Helix 8
8
H
416 418Right-handed 310
Helix 9
9
H
430 433Right-handed 310
Helix 10
10
A
30 50Right-handed alpha
Helix 11
11
A
118 122Right-handed 310
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There are 14 sheets in PDB entry 4ERS. 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,

There are 4 strands in A 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 65anti-parallel
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There are 6 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 13first strand
Strand 2
L
102 106parallel
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 C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 13first strand
Strand 2
L
102 106parallel
Strand 3
L
85 90anti-parallel
Strand 4
L
97 98anti-parallel
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There are 4 strands in D 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 E 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
192 197anti-parallel
Strand 4
L
205 209anti-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
H
217 221first strand
Strand 2
H
232 239anti-parallel
Strand 3
H
292 297anti-parallel
Strand 4
H
282 287anti-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
H
224 226first strand
Strand 2
H
336 340parallel
Strand 3
H
306 317anti-parallel
Strand 4
H
247 253anti-parallel
Strand 5
H
260 265anti-parallel
Strand 6
H
273 274anti-parallel
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There are 4 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
224 226first strand
Strand 2
H
336 340parallel
Strand 3
H
306 317anti-parallel
Strand 4
H
324 332anti-parallel
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There are 4 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
349 353first strand
Strand 2
H
364 374anti-parallel
Strand 3
H
405 414anti-parallel
Strand 4
H
392 394anti-parallel
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There are 4 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
349 353first strand
Strand 2
H
364 374anti-parallel
Strand 3
H
405 414anti-parallel
Strand 4
H
398 399anti-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
H
380 383first strand
Strand 2
H
423 429anti-parallel
Strand 3
H
434 440anti-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
A
57 58first strand
Strand 2
A
71 72anti-parallel
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There are 2 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
61 62first strand
Strand 2
A
67 68anti-parallel
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There are 2 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
75 80first strand
Strand 2
A
95 100anti-parallel
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