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


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 3TWI entry

There are 6 chains in PDB entry 3TWI (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
A
 GLY 80PHE 215
B
 GLY 80PHE 215
C
 GLY 80PHE 215
D
 ALA 21PRO 188
E
 ALA 21CYS 187
F
 SER 24CYS 187
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 15 helices in PDB entry 3TWI. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
D
137 139Right-handed 310
Helix 2
2
D
140 148Right-handed alpha
Helix 3
3
D
149 154Right-handed 310
Helix 4
4
D
161 165Right-handed 310
Helix 5
5
D
173 177Right-handed 310
Helix 6
6
E
139 150Right-handed alpha
Helix 7
7
E
151 154Right-handed 310
Helix 8
8
E
160 165Right-handed 310
Helix 9
9
E
173 177Right-handed 310
Helix 10
10
E
178 182Right-handed 310
Helix 11
11
F
142 142Right-handed alpha
Helix 12
12
F
145 150Right-handed alpha
Helix 13
13
F
151 154Right-handed 310
Helix 14
14
F
161 165Right-handed 310
Helix 15
15
F
173 177Right-handed 310
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There are 15 sheets in PDB entry 3TWI. 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, O,

There are 5 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
109 114first strand
Strand 2
A
85 93anti-parallel
Strand 3
A
203 214anti-parallel
Strand 4
A
132 141anti-parallel
Strand 5
A
173 182anti-parallel
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There are 2 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
97 99first strand
Strand 2
A
198 200anti-parallel
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There are 5 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
118 122first strand
Strand 2
A
125 128anti-parallel
Strand 3
A
187 194anti-parallel
Strand 4
A
150 155anti-parallel
Strand 5
A
158 159anti-parallel
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There are 5 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
118 122first strand
Strand 2
A
125 128anti-parallel
Strand 3
A
187 194anti-parallel
Strand 4
A
150 155anti-parallel
Strand 5
A
165 166anti-parallel
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There are 5 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
109 114first strand
Strand 2
B
85 93anti-parallel
Strand 3
B
203 214anti-parallel
Strand 4
B
132 141anti-parallel
Strand 5
B
173 182anti-parallel
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There are 2 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
97 99first strand
Strand 2
B
198 200anti-parallel
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There are 5 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
118 122first strand
Strand 2
B
125 128anti-parallel
Strand 3
B
187 194anti-parallel
Strand 4
B
150 155anti-parallel
Strand 5
B
158 159anti-parallel
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There are 5 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
118 122first strand
Strand 2
B
125 128anti-parallel
Strand 3
B
187 194anti-parallel
Strand 4
B
150 155anti-parallel
Strand 5
B
165 166anti-parallel
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There are 5 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
109 114first strand
Strand 2
C
85 93anti-parallel
Strand 3
C
203 214anti-parallel
Strand 4
C
132 141anti-parallel
Strand 5
C
173 182anti-parallel
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There are 2 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
97 99first strand
Strand 2
C
198 200anti-parallel
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There are 5 strands in K sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
118 122first strand
Strand 2
C
125 128anti-parallel
Strand 3
C
187 194anti-parallel
Strand 4
C
150 155anti-parallel
Strand 5
C
158 159anti-parallel
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There are 5 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
C
118 122first strand
Strand 2
C
125 128anti-parallel
Strand 3
C
187 194anti-parallel
Strand 4
C
150 155anti-parallel
Strand 5
C
165 166anti-parallel
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There are 6 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
D
27 29first strand
Strand 2
D
32 34anti-parallel
Strand 3
D
53 55parallel
Strand 4
D
77 79parallel
Strand 5
D
101 103parallel
Strand 6
D
125 127parallel
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There are 6 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
E
27 29first strand
Strand 2
E
32 34anti-parallel
Strand 3
E
53 55parallel
Strand 4
E
77 79parallel
Strand 5
E
101 103parallel
Strand 6
E
125 127parallel
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There are 5 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
F
33 34first strand
Strand 2
F
54 55parallel
Strand 3
F
77 79parallel
Strand 4
F
101 103parallel
Strand 5
F
125 127parallel
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