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


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 2REF entry

There are 2 chains in PDB entry 2REF (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 CYS 222ARG 424
B
 CYS 222ARG 424
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 23 helices in PDB entry 2REF. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
234 236Right-handed 310
Helix 2
2
A
237 249Right-handed alpha
Helix 3
3
A
256 267Right-handed alpha
Helix 4
4
A
291 296Right-handed 310
Helix 5
5
A
302 307Right-handed 310
Helix 6
6
A
323 326Right-handed 310
Helix 7
7
A
329 344Right-handed alpha
Helix 8
8
A
359 363Right-handed 310
Helix 9
9
A
367 372Right-handed alpha
Helix 10
10
A
383 391Right-handed alpha
Helix 11
11
A
407 411Right-handed 310
Helix 12
12
B
234 236Right-handed 310
Helix 13
13
B
237 249Right-handed alpha
Helix 14
14
B
250 254Right-handed 310
Helix 15
15
B
256 267Right-handed alpha
Helix 16
16
B
268 271Right-handed 310
Helix 17
17
B
291 296Right-handed 310
Helix 18
18
B
303 307Right-handed 310
Helix 19
19
B
323 326Right-handed 310
Helix 20
20
B
329 344Right-handed alpha
Helix 21
21
B
359 364Right-handed 310
Helix 22
22
B
367 372Right-handed alpha
Helix 23
23
B
383 391Right-handed alpha
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There are 2 sheets in PDB entry 2REF. Click on sheet of interest to get list of strands forming it: A, B,

There are 7 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
228 231first strand
Strand 2
A
271 276anti-parallel
Strand 3
A
279 289anti-parallel
Strand 4
A
313 321anti-parallel
Strand 5
A
350 355parallel
Strand 6
A
414 419anti-parallel
Strand 7
A
394 400anti-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
B
228 231first strand
Strand 2
B
272 276anti-parallel
Strand 3
B
279 289anti-parallel
Strand 4
B
313 321anti-parallel
Strand 5
B
350 355parallel
Strand 6
B
414 419anti-parallel
Strand 7
B
395 400anti-parallel
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