Analysis of interatomic Contacts of Structural Units in PDB entry:
1A4I


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 1A4I entry

There are 2 chains in PDB entry 1A4I (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 2GLU 296
B
 ALA 2GLU 296
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 24 helices in PDB entry 1A4I. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
9 30Right-handed alpha
Helix 2
2
A
47 63Right-handed alpha
Helix 3
3
A
78 90Right-handed alpha
Helix 4
4
A
111 117Right-handed alpha
Helix 5
5
A
120 122Right-handed 310
Helix 6
6
A
129 137Right-handed alpha
Helix 7
7
A
147 159Right-handed alpha
Helix 8
8
A
178 188Right-handed alpha
Helix 9
9
A
202 208Right-handed alpha
Helix 10
10
A
224 226Right-handed 310
Helix 11
11
A
258 263Right-handed alpha
Helix 12
12
A
275 294Right-handed alpha
Helix 13
13
B
9 30Right-handed alpha
Helix 14
14
B
47 63Right-handed alpha
Helix 15
15
B
78 90Right-handed alpha
Helix 16
16
B
111 117Right-handed alpha
Helix 17
17
B
120 122Right-handed 310
Helix 18
18
B
129 137Right-handed alpha
Helix 19
19
B
147 159Right-handed alpha
Helix 20
20
B
178 187Right-handed alpha
Helix 21
21
B
202 208Right-handed alpha
Helix 22
22
B
224 226Right-handed 310
Helix 23
23
B
258 263Right-handed alpha
Helix 24
24
B
276 294Right-handed 310
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There are 7 sheets in PDB entry 1A4I. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G,

There are 2 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
5 7first strand
Strand 2
A
267 269parallel
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There are 3 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
66 72first strand
Strand 2
A
37 43parallel
Strand 3
A
96 99parallel
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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
A
191 195first strand
Strand 2
A
167 171parallel
Strand 3
A
211 214parallel
Strand 4
A
232 235parallel
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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
B
5 7first strand
Strand 2
B
267 269parallel
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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
B
66 72first strand
Strand 2
B
37 43parallel
Strand 3
B
96 99parallel
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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
B
191 195first strand
Strand 2
B
167 171parallel
Strand 3
B
211 214parallel
Strand 4
B
232 235parallel
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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
239 242first strand
Strand 2
B
250 253anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il