Analysis of interatomic Contacts of Structural Units in PDB entry:
2XNA


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 2XNA entry

There are 3 chains in PDB entry 2XNA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLN 2SER 200
B
 ASP 3ALA 243
C
 GLU 1LYS 215
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 13 helices in PDB entry 2XNA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
80 84Right-handed 310
Helix 2
2
A
163 166Right-handed 310
Helix 3
3
A
182 187Right-handed alpha
Helix 4
4
B
116 120Right-handed 310
Helix 5
5
B
131 139Right-handed alpha
Helix 6
6
B
198 202Right-handed alpha
Helix 7
7
C
5 9Right-handed 310
Helix 8
8
C
10 23Right-handed alpha
Helix 9
9
C
47 51Right-handed 310
Helix 10
10
C
59 67Right-handed alpha
Helix 11
11
C
135 151Right-handed alpha
Helix 12
12
C
185 190Right-handed alpha
Helix 13
13
C
191 194Right-handed 310
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There are 22 sheets in PDB entry 2XNA. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, AF, AG, BA, BB, BC, BD, BE, BF, BG, BH, CA, CB, CC, CD, CE, CF, CG,

There are 5 strands in AA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
5 7first strand
Strand 2
A
19 24anti-parallel
Strand 3
A
71 76anti-parallel
Strand 4
A
61 65anti-parallel
Strand 5
A
55 58anti-parallel
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There are 4 strands in AB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
10 14first strand
Strand 2
A
104 109parallel
Strand 3
A
85 92anti-parallel
Strand 4
A
98 100parallel
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There are 5 strands in AC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
10 14first strand
Strand 2
A
104 109parallel
Strand 3
A
85 92anti-parallel
Strand 4
A
32 37anti-parallel
Strand 5
A
44 49anti-parallel
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There are 2 strands in AD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
98 100first strand
Strand 2
A
85 92parallel
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There are 4 strands in AE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
118 123first strand
Strand 2
A
131 136anti-parallel
Strand 3
A
167 175anti-parallel
Strand 4
A
158 162parallel
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There are 4 strands in AF sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
118 123first strand
Strand 2
A
131 136anti-parallel
Strand 3
A
167 175anti-parallel
Strand 4
A
153 154anti-parallel
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There are 2 strands in AG sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
158 162first strand
Strand 2
A
167 175parallel
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There are 4 strands in BA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
6 9first strand
Strand 2
B
21 27anti-parallel
Strand 3
B
78 80anti-parallel
Strand 4
B
66 68anti-parallel
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There are 4 strands in BB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
12 16first strand
Strand 2
B
109 114parallel
Strand 3
B
89 96anti-parallel
Strand 4
B
104 105anti-parallel
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There are 6 strands in BC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
12 16first strand
Strand 2
B
109 114parallel
Strand 3
B
89 96anti-parallel
Strand 4
B
33 40anti-parallel
Strand 5
B
44 53anti-parallel
Strand 6
B
56 59anti-parallel
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There are 2 strands in BD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
104 105first strand
Strand 2
B
89 96anti-parallel
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There are 4 strands in BE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
124 128first strand
Strand 2
B
140 150anti-parallel
Strand 3
B
188 197anti-parallel
Strand 4
B
177 178parallel
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There are 4 strands in BF sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
124 128first strand
Strand 2
B
140 150anti-parallel
Strand 3
B
188 197anti-parallel
Strand 4
B
170 172anti-parallel
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There are 2 strands in BG sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
177 178first strand
Strand 2
B
188 197parallel
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There are 4 strands in BH sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
164 166first strand
Strand 2
B
155 161anti-parallel
Strand 3
B
207 214anti-parallel
Strand 4
B
233 240anti-parallel
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There are 3 strands in CA sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
25 30first strand
Strand 2
C
71 75anti-parallel
Strand 3
C
97 99anti-parallel
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There are 4 strands in CB sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
35 36first strand
Strand 2
C
40 43anti-parallel
Strand 3
C
52 56anti-parallel
Strand 4
C
90 94parallel
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There are 2 strands in CC sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
119 120first strand
Strand 2
C
103 116anti-parallel
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There are 2 strands in CD sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
124 130first strand
Strand 2
C
103 116anti-parallel
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There are 5 strands in CE sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
174 177first strand
Strand 2
C
159 168anti-parallel
Strand 3
C
204 213anti-parallel
Strand 4
C
103 116parallel
Strand 5
C
119 120anti-parallel
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There are 5 strands in CF sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
174 177first strand
Strand 2
C
159 168anti-parallel
Strand 3
C
204 213anti-parallel
Strand 4
C
103 116parallel
Strand 5
C
124 130anti-parallel
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There are 2 strands in CG sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
132 134first strand
Strand 2
C
198 200anti-parallel
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