Analysis of interatomic Contacts of Structural Units in PDB entry:
1IRA


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 1IRA entry

There are 2 chains in PDB entry 1IRA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
X
 SER 7ASP 151
Y
 ASP 1VAL 311
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 1IRA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
X
37 42Right-handed 310
Helix 2
2
X
85 87Right-handed 310
Helix 3
3
X
93 98Right-handed 310
Helix 4
4
X
137 139Right-handed 310
Helix 5
5
Y
28 30Right-handed 310
Helix 6
6
Y
68 70Right-handed 310
Helix 7
7
Y
104 106Right-handed 310
Helix 8
8
Y
125 128Right-handed 310
Helix 9
9
Y
168 170Right-handed 310
Helix 10
10
Y
267 269Right-handed 310
Helix 11
11
Y
283 286Right-handed 310
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There are 10 sheets in PDB entry 1IRA. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J,

There are 6 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
146 150first strand
Strand 2
X
11 17anti-parallel
Strand 3
X
46 52anti-parallel
Strand 4
X
55 59anti-parallel
Strand 5
X
99 105anti-parallel
Strand 6
X
108 113anti-parallel
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There are 2 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
22 26first strand
Strand 2
X
29 33anti-parallel
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There are 2 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
66 72first strand
Strand 2
X
75 81anti-parallel
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There are 2 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
X
120 122first strand
Strand 2
X
132 134anti-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
Y
12 15first strand
Strand 2
Y
83 94parallel
Strand 3
Y
72 80anti-parallel
Strand 4
Y
34 38anti-parallel
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There are 3 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Y
20 22first strand
Strand 2
Y
60 63anti-parallel
Strand 3
Y
54 57anti-parallel
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There are 4 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Y
108 113first strand
Strand 2
Y
185 198parallel
Strand 3
Y
172 182anti-parallel
Strand 4
Y
139 142anti-parallel
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There are 3 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
Y
118 121first strand
Strand 2
Y
160 163anti-parallel
Strand 3
Y
154 157anti-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
Y
214 217first strand
Strand 2
Y
300 308parallel
Strand 3
Y
290 295anti-parallel
Strand 4
Y
237 242anti-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
Y
254 261first strand
Strand 2
Y
270 278anti-parallel
Strand 3
Y
224 232anti-parallel
Strand 4
Y
207 210anti-parallel
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