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


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 2IFA entry

There are 6 chains in PDB entry 2IFA (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 2LEU 201
B
 SER 2GLU 202
C
 SER 2GLU 202
D
 SER 2LEU 201
E
 SER 2GLU 202
F
 SER 2ASP 200
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 67 helices in PDB entry 2IFA. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
3 11Right-handed alpha
Helix 2
2
A
24 38Right-handed alpha
Helix 3
3
A
41 45Right-handed 310
Helix 4
4
A
55 64Right-handed alpha
Helix 5
5
A
64 72Right-handed alpha
Helix 6
6
A
75 91Right-handed alpha
Helix 7
7
A
102 112Right-handed alpha
Helix 8
8
A
115 117Right-handed 310
Helix 9
9
A
118 141Right-handed alpha
Helix 10
10
A
154 162Right-handed alpha
Helix 11
11
A
190 193Right-handed 310
Helix 12
12
B
3 11Right-handed alpha
Helix 13
13
B
24 39Right-handed alpha
Helix 14
14
B
41 45Right-handed 310
Helix 15
15
B
55 64Right-handed alpha
Helix 16
16
B
64 72Right-handed alpha
Helix 17
17
B
75 77Right-handed 310
Helix 18
18
B
78 91Right-handed alpha
Helix 19
19
B
102 112Right-handed alpha
Helix 20
20
B
118 140Right-handed alpha
Helix 21
21
B
154 163Right-handed alpha
Helix 22
22
B
190 194Right-handed alpha
Helix 23
23
C
3 11Right-handed alpha
Helix 24
24
C
24 38Right-handed alpha
Helix 25
25
C
41 45Right-handed 310
Helix 26
26
C
55 64Right-handed alpha
Helix 27
27
C
64 71Right-handed alpha
Helix 28
28
C
75 91Right-handed alpha
Helix 29
29
C
102 112Right-handed alpha
Helix 30
30
C
115 117Right-handed 310
Helix 31
31
C
118 141Right-handed alpha
Helix 32
32
C
154 163Right-handed alpha
Helix 33
33
C
190 193Right-handed 310
Helix 34
34
D
3 11Right-handed alpha
Helix 35
35
D
24 38Right-handed alpha
Helix 36
36
D
41 45Right-handed 310
Helix 37
37
D
55 64Right-handed alpha
Helix 38
38
D
64 72Right-handed alpha
Helix 39
39
D
78 91Right-handed alpha
Helix 40
40
D
102 112Right-handed alpha
Helix 41
41
D
113 116Right-handed 310
Helix 42
42
D
118 141Right-handed alpha
Helix 43
43
D
154 162Right-handed alpha
Helix 44
44
D
190 193Right-handed 310
Helix 45
45
E
3 11Right-handed alpha
Helix 46
46
E
24 39Right-handed alpha
Helix 47
47
E
41 45Right-handed 310
Helix 48
48
E
55 64Right-handed alpha
Helix 49
49
E
64 72Right-handed alpha
Helix 50
50
E
75 90Right-handed alpha
Helix 51
51
E
102 112Right-handed alpha
Helix 52
52
E
115 117Right-handed 310
Helix 53
53
E
118 141Right-handed alpha
Helix 54
54
E
154 162Right-handed alpha
Helix 55
55
E
190 193Right-handed 310
Helix 56
56
F
3 11Right-handed alpha
Helix 57
57
F
24 38Right-handed alpha
Helix 58
58
F
41 45Right-handed 310
Helix 59
59
F
55 64Right-handed alpha
Helix 60
60
F
64 71Right-handed alpha
Helix 61
61
F
75 77Right-handed 310
Helix 62
62
F
78 91Right-handed alpha
Helix 63
63
F
102 108Right-handed alpha
Helix 64
64
F
109 112Right-handed 310
Helix 65
65
F
115 141Right-handed alpha
Helix 66
66
F
154 162Right-handed alpha
Helix 67
67
F
190 193Right-handed 310
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There are 12 sheets in PDB entry 2IFA. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L,

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
A
17 18first strand
Strand 2
A
168 179anti-parallel
Strand 3
A
143 145anti-parallel
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There are 5 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
17 18first strand
Strand 2
A
168 179anti-parallel
Strand 3
A
94 101anti-parallel
Strand 4
A
48 54anti-parallel
Strand 5
B
195 198parallel
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There are 5 strands in C sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
195 198first strand
Strand 2
B
48 54parallel
Strand 3
B
94 101anti-parallel
Strand 4
B
168 179anti-parallel
Strand 5
B
17 18anti-parallel
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There are 5 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
195 198first strand
Strand 2
B
48 54parallel
Strand 3
B
94 101anti-parallel
Strand 4
B
168 179anti-parallel
Strand 5
B
143 145anti-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
C
17 18first strand
Strand 2
C
168 179anti-parallel
Strand 3
C
143 145anti-parallel
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There are 5 strands in F sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
17 18first strand
Strand 2
C
168 179anti-parallel
Strand 3
C
94 101anti-parallel
Strand 4
C
48 54anti-parallel
Strand 5
D
195 198parallel
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There are 5 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
195 198first strand
Strand 2
D
48 54parallel
Strand 3
D
94 101anti-parallel
Strand 4
D
168 179anti-parallel
Strand 5
D
17 18anti-parallel
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There are 5 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
195 198first strand
Strand 2
D
48 54parallel
Strand 3
D
94 101anti-parallel
Strand 4
D
168 179anti-parallel
Strand 5
D
143 145anti-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
E
17 18first strand
Strand 2
E
168 179anti-parallel
Strand 3
E
144 145anti-parallel
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There are 5 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
17 18first strand
Strand 2
E
168 179anti-parallel
Strand 3
E
94 101anti-parallel
Strand 4
E
48 54anti-parallel
Strand 5
F
195 198parallel
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There are 5 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
195 198first strand
Strand 2
F
48 54parallel
Strand 3
F
94 101anti-parallel
Strand 4
F
168 179anti-parallel
Strand 5
F
17 18anti-parallel
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There are 5 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
195 198first strand
Strand 2
F
48 54parallel
Strand 3
F
94 101anti-parallel
Strand 4
F
168 179anti-parallel
Strand 5
F
143 145anti-parallel
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