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


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 4TWL entry

There are 2 chains in PDB entry 4TWL (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ASP 3SER 241
B
 GLU 4LEU 239
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 20 helices in PDB entry 4TWL. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
A
14 16Right-handed 310
Helix 2
AA2
A
17 22Right-handed alpha
Helix 3
AA3
A
25 31Right-handed alpha
Helix 4
AA4
A
40 44Right-handed 310
Helix 5
AA5
A
48 51Right-handed 310
Helix 6
AA6
A
137 142Right-handed alpha
Helix 7
AA7
A
143 149Right-handed alpha
Helix 8
AA8
A
164 168Right-handed 310
Helix 9
AA9
A
203 213Right-handed alpha
Helix 10
AB1
A
214 219Right-handed 310
Helix 11
AB2
B
14 18Right-handed 310
Helix 12
AB3
B
22 25Right-handed 310
Helix 13
AB4
B
26 31Right-handed alpha
Helix 14
AB5
B
40 44Right-handed 310
Helix 15
AB6
B
48 51Right-handed 310
Helix 16
AB7
B
137 142Right-handed alpha
Helix 17
AB8
B
143 153Right-handed alpha
Helix 18
AB9
B
164 168Right-handed 310
Helix 19
AC1
B
203 214Right-handed alpha
Helix 20
AC2
B
215 219Right-handed 310
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There are 6 sheets in PDB entry 4TWL. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6,

There are 2 strands in AA1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
38 39first strand
Strand 2
A
103 104parallel
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There are 10 strands in AA2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
45 46first strand
Strand 2
A
233 237parallel
Strand 3
A
174 181anti-parallel
Strand 4
A
189 196anti-parallel
Strand 5
A
124 133parallel
Strand 6
A
111 118anti-parallel
Strand 7
A
87 97anti-parallel
Strand 8
A
71 75anti-parallel
Strand 9
A
60 66anti-parallel
Strand 10
A
157 163anti-parallel
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There are 6 strands in AA3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
54 57first strand
Strand 2
A
80 84anti-parallel
Strand 3
A
87 97anti-parallel
Strand 4
A
111 118anti-parallel
Strand 5
A
124 133anti-parallel
Strand 6
A
200 202parallel
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There are 3 strands in AA4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
38 39first strand
Strand 2
B
103 104parallel
Strand 3
B
107 108anti-parallel
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There are 10 strands in AA5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
45 46first strand
Strand 2
B
234 237parallel
Strand 3
B
174 180anti-parallel
Strand 4
B
191 196anti-parallel
Strand 5
B
124 133parallel
Strand 6
B
111 118anti-parallel
Strand 7
B
88 97anti-parallel
Strand 8
B
71 76anti-parallel
Strand 9
B
60 66anti-parallel
Strand 10
B
157 163anti-parallel
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There are 6 strands in AA6 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
54 57first strand
Strand 2
B
80 83anti-parallel
Strand 3
B
88 97anti-parallel
Strand 4
B
111 118anti-parallel
Strand 5
B
124 133anti-parallel
Strand 6
B
200 202parallel
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