Analysis of interatomic Contacts of Structural Units in PDB entry:
3TWD


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 3TWD entry

There are 2 chains in PDB entry 3TWD (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 ALA 232ALA 453
B
 ALA 232ALA 453
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 4 helices in PDB entry 3TWD. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
A
232 250Right-handed alpha
Helix 2
2
A
256 258Right-handed 310
Helix 3
3
B
233 250Right-handed alpha
Helix 4
4
B
256 258Right-handed 310
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There are 8 sheets in PDB entry 3TWD. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

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
413 415first strand
Strand 2
A
395 397parallel
Strand 3
A
360 372parallel
Strand 4
A
377 378parallel
Strand 5
A
402 403parallel
Strand 6
A
420 421parallel
Strand 7
A
436 437parallel
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There are 6 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
360 372first strand
Strand 2
A
343 355parallel
Strand 3
A
337 338parallel
Strand 4
A
319 320parallel
Strand 5
A
302 303parallel
Strand 6
A
278 286parallel
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There are 11 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
253 254first strand
Strand 2
A
273 274parallel
Strand 3
A
291 292parallel
Strand 4
A
308 309parallel
Strand 5
A
325 326parallel
Strand 6
A
343 355parallel
Strand 7
A
330 332parallel
Strand 8
A
314 316parallel
Strand 9
A
297 299parallel
Strand 10
A
278 286parallel
Strand 11
A
260 268parallel
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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
A
383 385first strand
Strand 2
A
408 410parallel
Strand 3
A
426 427parallel
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There are 7 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
413 415first strand
Strand 2
B
395 397parallel
Strand 3
B
360 372parallel
Strand 4
B
377 378parallel
Strand 5
B
402 403parallel
Strand 6
B
420 421parallel
Strand 7
B
436 437parallel
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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
360 372first strand
Strand 2
B
343 355parallel
Strand 3
B
336 338parallel
Strand 4
B
319 320parallel
Strand 5
B
302 303parallel
Strand 6
B
278 286parallel
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There are 11 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
253 254first strand
Strand 2
B
273 274parallel
Strand 3
B
291 292parallel
Strand 4
B
308 309parallel
Strand 5
B
325 326parallel
Strand 6
B
343 355parallel
Strand 7
B
330 332parallel
Strand 8
B
314 316parallel
Strand 9
B
297 299parallel
Strand 10
B
278 286parallel
Strand 11
B
260 268parallel
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There are 3 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
383 385first strand
Strand 2
B
408 410parallel
Strand 3
B
426 427parallel
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