Analysis of interatomic Contacts of Structural Units in PDB entry:
1A4K


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 1A4K entry

There are 4 chains in PDB entry 1A4K (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
L
 GLU 1GLY 212
H
 GLN 1VAL 211
A
 GLU 1ARG 211
B
 GLN 1PRO 213
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 17 helices in PDB entry 1A4K. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
1
L
80 82Right-handed 310
Helix 2
2
L
122 127Right-handed alpha
Helix 3
3
L
183 187Right-handed alpha
Helix 4
4
H
29 31Right-handed 310
Helix 5
5
H
61 63Right-handed 310
Helix 6
6
H
73 75Right-handed 310
Helix 7
7
H
84 86Right-handed 310
Helix 8
8
H
188 191Right-handed alpha
Helix 9
9
H
201 203Right-handed 310
Helix 10
10
A
122 125Right-handed alpha
Helix 11
11
A
183 187Right-handed alpha
Helix 12
12
B
29 31Right-handed 310
Helix 13
13
B
61 63Right-handed 310
Helix 14
14
B
73 75Right-handed 310
Helix 15
15
B
84 86Right-handed 310
Helix 16
16
B
155 157Right-handed 310
Helix 17
17
B
187 191Right-handed 310
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There are 18 sheets in PDB entry 1A4K. 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, P, Q, R,

There are 4 strands in A sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
4 6first strand
Strand 2
L
19 25anti-parallel
Strand 3
L
70 75anti-parallel
Strand 4
L
62 67anti-parallel
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There are 5 strands in B sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 14first strand
Strand 2
L
102 107parallel
Strand 3
L
84 90anti-parallel
Strand 4
L
33 38anti-parallel
Strand 5
L
45 48anti-parallel
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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
L
114 118first strand
Strand 2
L
129 137anti-parallel
Strand 3
L
175 182anti-parallel
Strand 4
L
159 163anti-parallel
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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
L
144 150first strand
Strand 2
L
192 198anti-parallel
Strand 3
L
205 209anti-parallel
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There are 4 strands in E sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
4 6first strand
Strand 2
H
18 24anti-parallel
Strand 3
H
77 82anti-parallel
Strand 4
H
67 72anti-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
H
10 12first strand
Strand 2
H
107 111parallel
Strand 3
H
88 95anti-parallel
Strand 4
H
33 40anti-parallel
Strand 5
H
45 51anti-parallel
Strand 6
H
57 59anti-parallel
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There are 3 strands in G sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
120 124first strand
Strand 2
H
139 145anti-parallel
Strand 3
H
176 181anti-parallel
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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
H
151 154first strand
Strand 2
H
195 200anti-parallel
Strand 3
H
205 210anti-parallel
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There are 2 strands in I sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
93 96first strand
Strand 2
H
1100 103anti-parallel
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There are 4 strands in J sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
4 6first strand
Strand 2
A
19 25anti-parallel
Strand 3
A
70 75anti-parallel
Strand 4
A
62 67anti-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
A
10 14first strand
Strand 2
A
102 107parallel
Strand 3
A
84 90anti-parallel
Strand 4
A
33 38anti-parallel
Strand 5
A
44 48anti-parallel
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There are 4 strands in L sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
114 118first strand
Strand 2
A
129 137anti-parallel
Strand 3
A
175 182anti-parallel
Strand 4
A
159 163anti-parallel
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There are 3 strands in M sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
144 150first strand
Strand 2
A
192 198anti-parallel
Strand 3
A
205 209anti-parallel
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There are 4 strands in N sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
4 6first strand
Strand 2
B
17 24anti-parallel
Strand 3
B
77 1082anti-parallel
Strand 4
B
67 72anti-parallel
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There are 6 strands in O sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
10 12first strand
Strand 2
B
107 111parallel
Strand 3
B
88 95anti-parallel
Strand 4
B
33 40anti-parallel
Strand 5
B
45 51anti-parallel
Strand 6
B
57 59anti-parallel
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There are 3 strands in P sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
120 124first strand
Strand 2
B
139 145anti-parallel
Strand 3
B
176 181anti-parallel
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There are 3 strands in Q sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
150 154first strand
Strand 2
B
195 200anti-parallel
Strand 3
B
208 210anti-parallel
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There are 2 strands in R sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
B
93 96first strand
Strand 2
B
1100 103anti-parallel
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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il