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


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 21AU entry

There are 5 chains in PDB entry 21AU (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLU 1SER 125
B
 ASP 1LYS 107
C
 GLU 1SER 125
D
 GLN 1LEU 110
H
 ASP 20ASN 340
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 16 helices in PDB entry 21AU. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
A
28 32Right-handed 310
Helix 2
AA2
A
87 91Right-handed 310
Helix 3
AA3
B
79 83Right-handed 310
Helix 4
AA4
C
87 91Right-handed 310
Helix 5
AA5
D
80 84Right-handed 310
Helix 6
AA6
H
43 53Right-handed alpha
Helix 7
AA7
H
54 65Right-handed alpha
Helix 8
AA8
H
76 80Right-handed 310
Helix 9
AA9
H
88 92Right-handed 310
Helix 10
AB1
H
97 104Right-handed alpha
Helix 11
AB2
H
160 163Right-handed 310
Helix 12
AB3
H
168 170Right-handed 310
Helix 13
AB4
H
187 202Right-handed alpha
Helix 14
AB5
H
252 254Right-handed 310
Helix 15
AB6
H
267 278Right-handed alpha
Helix 16
AB7
H
283 290Right-handed alpha
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There are 19 sheets in PDB entry 21AU. 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, AB5, AB6, AB7, AB8, AB9, AC1,

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 6first strand
Strand 2
A
18 25anti-parallel
Strand 3
A
78 83anti-parallel
Strand 4
A
68 73anti-parallel
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There are 6 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
10 12first strand
Strand 2
A
119 123parallel
Strand 3
A
92 100anti-parallel
Strand 4
A
33 39anti-parallel
Strand 5
A
45 51anti-parallel
Strand 6
A
58 60anti-parallel
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There are 4 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
10 12first strand
Strand 2
A
119 123parallel
Strand 3
A
92 100anti-parallel
Strand 4
A
111 115anti-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
B
4 7first strand
Strand 2
B
19 25anti-parallel
Strand 3
B
70 75anti-parallel
Strand 4
B
62 67anti-parallel
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There are 6 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
10 13first strand
Strand 2
B
102 106parallel
Strand 3
B
85 90anti-parallel
Strand 4
B
33 38anti-parallel
Strand 5
B
45 49anti-parallel
Strand 6
B
53 54anti-parallel
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There are 4 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
10 13first strand
Strand 2
B
102 106parallel
Strand 3
B
85 90anti-parallel
Strand 4
B
97 98anti-parallel
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There are 4 strands in AA7 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
3 7first strand
Strand 2
C
17 25anti-parallel
Strand 3
C
78 84anti-parallel
Strand 4
C
68 69anti-parallel
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There are 6 strands in AA8 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
10 12first strand
Strand 2
C
119 123parallel
Strand 3
C
92 103anti-parallel
Strand 4
C
33 39anti-parallel
Strand 5
C
45 52anti-parallel
Strand 6
C
58 60anti-parallel
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There are 4 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
10 12first strand
Strand 2
C
119 123parallel
Strand 3
C
92 103anti-parallel
Strand 4
C
108 115anti-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
D
9 12first strand
Strand 2
D
105 109parallel
Strand 3
D
86 93anti-parallel
Strand 4
D
35 39anti-parallel
Strand 5
D
46 49anti-parallel
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There are 4 strands in AB2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
9 12first strand
Strand 2
D
105 109parallel
Strand 3
D
86 93anti-parallel
Strand 4
D
98 101anti-parallel
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There are 3 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
18 23first strand
Strand 2
D
71 76anti-parallel
Strand 3
D
63 68anti-parallel
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There are 2 strands in AB4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
70 71first strand
Strand 2
H
166 167parallel
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There are 5 strands in AB5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
81 83first strand
Strand 2
H
172 175parallel
Strand 3
H
129 133parallel
Strand 4
H
138 142anti-parallel
Strand 5
H
110 111parallel
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There are 2 strands in AB6 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
147 149first strand
Strand 2
H
156 158anti-parallel
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There are 4 strands in AB7 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
177 180first strand
Strand 2
H
327 337anti-parallel
Strand 3
H
205 208anti-parallel
Strand 4
H
211 212anti-parallel
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There are 4 strands in AB8 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
177 180first strand
Strand 2
H
327 337anti-parallel
Strand 3
H
223 231anti-parallel
Strand 4
H
238 240anti-parallel
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There are 3 strands in AB9 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
244 248first strand
Strand 2
H
313 317anti-parallel
Strand 3
H
322 323anti-parallel
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There are 2 strands in AC1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
256 257first strand
Strand 2
H
306 307anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il