Analysis of interatomic Contacts of Structural Units in PDB entry:
21TW


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 21TW entry

There are 4 chains in PDB entry 21TW (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 VAL 2VAL 361
B
 ASP 10LEU 157
C
 ASP 10ALA 156
D
 LYS 11LEU 157
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 5 helices in PDB entry 21TW. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
A
87 91Right-handed 310
Helix 2
AA2
A
276 280Right-handed 310
Helix 3
AA3
A
335 339Right-handed 310
Helix 4
AA4
B
138 142Right-handed 310
Helix 5
AA5
C
138 142Right-handed 310
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There are 13 sheets in PDB entry 21TW. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1, AB2, AB3, AB4,

There are 4 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
3 7first strand
Strand 2
A
18 25anti-parallel
Strand 3
A
81 83anti-parallel
Strand 4
A
68 69anti-parallel
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There are 5 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
58 59first strand
Strand 2
A
46 51anti-parallel
Strand 3
A
34 39anti-parallel
Strand 4
A
92 97anti-parallel
Strand 5
A
109 111anti-parallel
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There are 2 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
72 73first strand
Strand 2
A
78 79anti-parallel
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There are 4 strands in AA4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
251 254first strand
Strand 2
A
266 273anti-parallel
Strand 3
A
326 331anti-parallel
Strand 4
A
316 321anti-parallel
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There are 5 strands in AA5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
306 307first strand
Strand 2
A
293 299anti-parallel
Strand 3
A
282 287anti-parallel
Strand 4
A
341 345anti-parallel
Strand 5
A
357 358anti-parallel
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There are 5 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
28 29first strand
Strand 2
B
13 18anti-parallel
Strand 3
B
151 157anti-parallel
Strand 4
B
54 67anti-parallel
Strand 5
B
113 119anti-parallel
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There are 5 strands in AA7 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
37 38first strand
Strand 2
B
13 18anti-parallel
Strand 3
B
151 157anti-parallel
Strand 4
B
54 67anti-parallel
Strand 5
B
122 126anti-parallel
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There are 5 strands in AA8 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
42 44first strand
Strand 2
B
47 49anti-parallel
Strand 3
B
131 133anti-parallel
Strand 4
B
76 83anti-parallel
Strand 5
B
90 98anti-parallel
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There are 3 strands in AA9 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
28 29first strand
Strand 2
C
13 18anti-parallel
Strand 3
C
37 38anti-parallel
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There are 5 strands in AB1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
28 29first strand
Strand 2
C
13 18anti-parallel
Strand 3
C
151 155anti-parallel
Strand 4
C
54 66anti-parallel
Strand 5
C
114 126anti-parallel
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There are 5 strands in AB2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
42 44first strand
Strand 2
C
47 49anti-parallel
Strand 3
C
131 136anti-parallel
Strand 4
C
76 83anti-parallel
Strand 5
C
90 98anti-parallel
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There are 5 strands in AB3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
36 38first strand
Strand 2
D
13 17anti-parallel
Strand 3
D
151 156anti-parallel
Strand 4
D
54 66anti-parallel
Strand 5
D
114 126anti-parallel
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There are 5 strands in AB4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
42 43first strand
Strand 2
D
48 49anti-parallel
Strand 3
D
131 136anti-parallel
Strand 4
D
76 83anti-parallel
Strand 5
D
90 98anti-parallel
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