Analysis of interatomic Contacts of Structural Units in PDB entry:
2A1H


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 2A1H entry

There are 2 chains in PDB entry 2A1H (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 SER 3VAL 365
B
 SER 3VAL 365
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 21 helices in PDB entry 2A1H. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
6 10Right-handed 310
Helix 2
2
A
65 70Right-handed alpha
Helix 3
3
A
92 107Right-handed alpha
Helix 4
4
A
113 128Right-handed alpha
Helix 5
5
A
129 132Right-handed 310
Helix 6
6
A
203 208Right-handed 310
Helix 7
7
A
209 220Right-handed alpha
Helix 8
8
A
268 282Right-handed alpha
Helix 9
9
A
292 302Right-handed alpha
Helix 10
10
A
334 338Right-handed 310
Helix 11
11
A
339 354Right-handed alpha
Helix 12
12
B
6 10Right-handed 310
Helix 13
13
B
65 70Right-handed alpha
Helix 14
14
B
92 107Right-handed alpha
Helix 15
15
B
113 128Right-handed alpha
Helix 16
16
B
129 132Right-handed 310
Helix 17
17
B
203 208Right-handed 310
Helix 18
18
B
209 220Right-handed alpha
Helix 19
19
B
268 282Right-handed alpha
Helix 20
20
B
292 302Right-handed alpha
Helix 21
21
B
339 354Right-handed alpha
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There are 9 sheets in PDB entry 2A1H. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I,

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
A
11 12first strand
Strand 2
A
52 55parallel
Strand 3
A
37 44anti-parallel
Strand 4
A
160 170anti-parallel
Strand 5
A
139 148anti-parallel
Strand 6
A
73 75anti-parallel
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There are 7 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
47 48first strand
Strand 2
A
37 44anti-parallel
Strand 3
A
160 170anti-parallel
Strand 4
A
139 148anti-parallel
Strand 5
A
78 82anti-parallel
Strand 6
A
88 91anti-parallel
Strand 7
A
362 364anti-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
A
59 61first strand
Strand 2
B
59 61anti-parallel
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There are 8 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
285 288first strand
Strand 2
A
254 258parallel
Strand 3
A
241 248anti-parallel
Strand 4
A
234 238anti-parallel
Strand 5
A
224 229anti-parallel
Strand 6
A
182 186parallel
Strand 7
A
316 325parallel
Strand 8
A
328 331anti-parallel
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There are 6 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
285 288first strand
Strand 2
A
254 258parallel
Strand 3
A
241 248anti-parallel
Strand 4
A
305 312anti-parallel
Strand 5
A
316 325anti-parallel
Strand 6
A
328 331anti-parallel
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There are 6 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
11 12first strand
Strand 2
B
52 55parallel
Strand 3
B
37 44anti-parallel
Strand 4
B
161 170anti-parallel
Strand 5
B
139 148anti-parallel
Strand 6
B
73 75anti-parallel
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There are 7 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
47 48first strand
Strand 2
B
37 44anti-parallel
Strand 3
B
161 170anti-parallel
Strand 4
B
139 148anti-parallel
Strand 5
B
78 82anti-parallel
Strand 6
B
88 91anti-parallel
Strand 7
B
362 364anti-parallel
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There are 8 strands in H sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
285 288first strand
Strand 2
B
254 258parallel
Strand 3
B
241 248anti-parallel
Strand 4
B
234 238anti-parallel
Strand 5
B
224 229anti-parallel
Strand 6
B
182 186parallel
Strand 7
B
316 325parallel
Strand 8
B
328 331anti-parallel
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There are 6 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
285 288first strand
Strand 2
B
254 258parallel
Strand 3
B
241 248anti-parallel
Strand 4
B
305 312anti-parallel
Strand 5
B
316 325anti-parallel
Strand 6
B
328 331anti-parallel
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