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


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 2IFF entry

There are 3 chains in PDB entry 2IFF (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
L
 ASP 1CYS 212
H
 VAL 2PRO 215
Y
 LYS 1LEU 129
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 15 helices in PDB entry 2IFF. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
L
78 82Right-handed 310
Helix 2
2
L
119 125Right-handed alpha
Helix 3
3
L
181 186Right-handed alpha
Helix 4
4
H
28 32Right-handed 310
Helix 5
5
H
62 64Right-handed 310
Helix 6
6
H
87 91Right-handed 310
Helix 7
7
H
159 161Right-handed 310
Helix 8
8
Y
4 15Right-handed alpha
Helix 9
9
Y
24 37Right-handed alpha
Helix 10
10
Y
80 85Right-handed 310
Helix 11
11
Y
88 100Right-handed alpha
Helix 12
12
Y
101 102Right-handed 310
Helix 13
13
Y
103 107Right-handed 310
Helix 14
14
Y
108 116Right-handed alpha
Helix 15
15
Y
119 125Right-handed 310
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There are 10 sheets in PDB entry 2IFF. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J,

There are 3 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
4 7first strand
Strand 2
L
19 29anti-parallel
Strand 3
L
61 74anti-parallel
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There are 6 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 13first strand
Strand 2
L
100 104parallel
Strand 3
L
84 89anti-parallel
Strand 4
L
33 37anti-parallel
Strand 5
L
44 48anti-parallel
Strand 6
L
52 53anti-parallel
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There are 4 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 13first strand
Strand 2
L
100 104parallel
Strand 3
L
84 89anti-parallel
Strand 4
L
95 96anti-parallel
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There are 4 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
112 116first strand
Strand 2
L
127 137anti-parallel
Strand 3
L
171 180anti-parallel
Strand 4
L
157 161anti-parallel
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There are 3 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
143 148first strand
Strand 2
L
189 196anti-parallel
Strand 3
L
199 208anti-parallel
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There are 4 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
4 6first strand
Strand 2
H
17 24anti-parallel
Strand 3
H
78 84anti-parallel
Strand 4
H
68 73anti-parallel
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There are 6 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
10 12first strand
Strand 2
H
110 114parallel
Strand 3
H
92 97anti-parallel
Strand 4
H
34 40anti-parallel
Strand 5
H
44 51anti-parallel
Strand 6
H
58 60anti-parallel
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There are 4 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
123 127first strand
Strand 2
H
138 148anti-parallel
Strand 3
H
178 187anti-parallel
Strand 4
H
167 173anti-parallel
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There are 3 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
154 157first strand
Strand 2
H
197 202anti-parallel
Strand 3
H
207 212anti-parallel
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There are 3 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
43 45first strand
Strand 2
Y
51 53anti-parallel
Strand 3
Y
58 59anti-parallel
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