Analysis of interatomic Contacts of Structural Units in PDB entry:
1A81


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 1A81 entry

There are 24 chains in PDB entry 1A81 (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 9ILE 262
B
 PRO 168ASP 169
B
 GLU 171LEU 180
B
 SER 182ASN 185
C
 SER 9ILE 262
D
 PRO 168ASP 169
D
 GLU 171LEU 180
D
 SER 182ASN 185
E
 SER 9ILE 262
F
 PRO 168ASP 169
F
 GLU 171LEU 180
F
 SER 182ASN 185
G
 SER 9ILE 262
H
 PRO 168ASP 169
H
 GLU 171LEU 180
H
 SER 182ASN 185
I
 SER 9ILE 262
J
 PRO 168ASP 169
J
 GLU 171LEU 180
J
 SER 182ASN 185
K
 SER 9ILE 262
L
 PRO 168ASP 169
L
 GLU 171LEU 180
L
 SER 182ASN 185
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 48 helices in PDB entry 1A81. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
22 31Right-handed alpha
Helix 2
2
A
85 93Right-handed alpha
Helix 3
3
A
121 135Right-handed alpha
Helix 4
4
A
140 160Right-handed alpha
Helix 5
5
A
163 165Right-handed 310
Helix 6
6
A
175 183Right-handed alpha
Helix 7
7
A
237 244Right-handed alpha
Helix 8
8
B
175 177Right-handed 310
Helix 9
9
C
10 12Right-handed 310
Helix 10
10
C
22 32Right-handed alpha
Helix 11
11
C
85 94Right-handed alpha
Helix 12
12
C
121 135Right-handed alpha
Helix 13
13
C
141 160Right-handed alpha
Helix 14
14
C
163 165Right-handed 310
Helix 15
15
C
175 183Right-handed alpha
Helix 16
16
C
237 244Right-handed alpha
Helix 17
17
D
175 177Right-handed 310
Helix 18
18
E
10 12Right-handed 310
Helix 19
19
E
22 30Right-handed alpha
Helix 20
20
E
85 92Right-handed alpha
Helix 21
21
E
154 160Right-handed alpha
Helix 22
22
E
163 165Right-handed 310
Helix 23
23
E
175 183Right-handed alpha
Helix 24
24
E
237 244Right-handed alpha
Helix 25
25
G
10 12Right-handed 310
Helix 26
26
G
22 30Right-handed alpha
Helix 27
27
G
85 94Right-handed alpha
Helix 28
28
G
154 160Right-handed alpha
Helix 29
29
G
163 165Right-handed 310
Helix 30
30
G
175 183Right-handed alpha
Helix 31
31
G
237 244Right-handed alpha
Helix 32
32
H
175 177Right-handed 310
Helix 33
33
I
10 12Right-handed 310
Helix 34
34
I
22 30Right-handed alpha
Helix 35
35
I
85 93Right-handed alpha
Helix 36
36
I
121 135Right-handed alpha
Helix 37
37
I
142 160Right-handed alpha
Helix 38
38
I
175 183Right-handed alpha
Helix 39
39
I
237 244Right-handed alpha
Helix 40
40
J
175 177Right-handed 310
Helix 41
41
K
10 12Right-handed 310
Helix 42
42
K
22 32Right-handed alpha
Helix 43
43
K
85 92Right-handed alpha
Helix 44
44
K
154 160Right-handed alpha
Helix 45
45
K
163 165Right-handed 310
Helix 46
46
K
175 183Right-handed alpha
Helix 47
47
K
237 244Right-handed alpha
Helix 48
48
L
175 177Right-handed 310
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There are 14 sheets in PDB entry 1A81. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N,

There are 4 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
38 43first strand
Strand 2
A
51 57anti-parallel
Strand 3
A
60 68anti-parallel
Strand 4
A
74 76anti-parallel
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There are 4 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
192 196first strand
Strand 2
A
203 209anti-parallel
Strand 3
A
212 220anti-parallel
Strand 4
A
226 228anti-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
C
38 43first strand
Strand 2
C
51 57anti-parallel
Strand 3
C
60 69anti-parallel
Strand 4
C
73 76anti-parallel
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There are 3 strands in D sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
212 217first strand
Strand 2
C
202 209anti-parallel
Strand 3
C
192 199anti-parallel
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There are 2 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
218 221first strand
Strand 2
C
225 228anti-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
E
38 43first strand
Strand 2
E
51 56anti-parallel
Strand 3
E
61 69anti-parallel
Strand 4
E
73 76anti-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
E
192 196first strand
Strand 2
E
202 209anti-parallel
Strand 3
E
212 220anti-parallel
Strand 4
E
226 228anti-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
G
39 43first strand
Strand 2
G
51 56anti-parallel
Strand 3
G
61 68anti-parallel
Strand 4
G
74 76anti-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
G
192 196first strand
Strand 2
G
203 209anti-parallel
Strand 3
G
212 218anti-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
I
38 43first strand
Strand 2
I
51 56anti-parallel
Strand 3
I
61 69anti-parallel
Strand 4
I
73 76anti-parallel
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There are 3 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
I
192 196first strand
Strand 2
I
203 209anti-parallel
Strand 3
I
212 217anti-parallel
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There are 4 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
K
38 43first strand
Strand 2
K
51 56anti-parallel
Strand 3
K
61 68anti-parallel
Strand 4
K
74 76anti-parallel
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There are 3 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
K
192 196first strand
Strand 2
K
203 209anti-parallel
Strand 3
K
212 217anti-parallel
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There are 2 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
K
218 220first strand
Strand 2
K
226 228anti-parallel
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