Analysis of interatomic Contacts of Structural Units in PDB entry:
6ION


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 6ION entry

There are 3 chains in PDB entry 6ION (CSU analysis of residue contacts immediately below table)
Chain ID Initial residueTerminal residue
L
 ILE 2GLU 214
H
 VAL 2PRO 217
A
 LEU 1TYR 200
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 10 helices in PDB entry 6ION. Click on helix of interest for CSU analysis.
Helix
number 		Helix
ID		Chain
ID		 Initial
residue		Terminal
residue		 Helix class
Helix 1
AA1
L
79 83Right-handed 310
Helix 2
AA2
L
122 129Right-handed alpha
Helix 3
AA3
L
184 188Right-handed alpha
Helix 4
AA4
H
75 77Right-handed 310
Helix 5
AA5
H
88 92Right-handed 310
Helix 6
AA6
H
161 163Right-handed 310
Helix 7
AA7
H
189 193Right-handed 310
Helix 8
AA8
A
15 19Right-handed 310
Helix 9
AA9
A
133 137Right-handed 310
Helix 10
AB1
A
190 194Right-handed 310
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There are 14 sheets in PDB entry 6ION. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1, AB2, AB3, AB4, AB5,

There are 4 strands in AA1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
4 7first 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 6 strands in AA2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 13first strand
Strand 2
L
103 107parallel
Strand 3
L
85 93anti-parallel
Strand 4
L
33 38anti-parallel
Strand 5
L
44 49anti-parallel
Strand 6
L
53 54anti-parallel
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There are 4 strands in AA3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
10 13first strand
Strand 2
L
103 107parallel
Strand 3
L
85 93anti-parallel
Strand 4
L
96 99anti-parallel
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There are 4 strands in AA4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
115 119first strand
Strand 2
L
130 140anti-parallel
Strand 3
L
174 183anti-parallel
Strand 4
L
160 164anti-parallel
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There are 4 strands in AA5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
L
154 155first strand
Strand 2
L
146 151anti-parallel
Strand 3
L
192 199anti-parallel
Strand 4
L
202 211anti-parallel
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There are 4 strands in AA6 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
3 7first strand
Strand 2
H
18 25anti-parallel
Strand 3
H
79 84anti-parallel
Strand 4
H
69 74anti-parallel
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There are 6 strands in AA7 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
11 12first strand
Strand 2
H
112 116parallel
Strand 3
H
93 101anti-parallel
Strand 4
H
34 41anti-parallel
Strand 5
H
48 54anti-parallel
Strand 6
H
59 61anti-parallel
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There are 4 strands in AA8 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
11 12first strand
Strand 2
H
112 116parallel
Strand 3
H
93 101anti-parallel
Strand 4
H
104 108anti-parallel
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There are 4 strands in AA9 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
125 129first strand
Strand 2
H
141 150anti-parallel
Strand 3
H
179 188anti-parallel
Strand 4
H
168 170anti-parallel
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There are 4 strands in AB1 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
125 129first strand
Strand 2
H
141 150anti-parallel
Strand 3
H
179 188anti-parallel
Strand 4
H
174 176anti-parallel
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There are 3 strands in AB2 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
H
156 159first strand
Strand 2
H
199 204anti-parallel
Strand 3
H
209 214anti-parallel
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There are 6 strands in AB3 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
20 23first strand
Strand 2
A
2 9anti-parallel
Strand 3
A
43 52anti-parallel
Strand 4
A
31 40anti-parallel
Strand 5
A
69 78anti-parallel
Strand 6
A
58 66anti-parallel
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There are 2 strands in AB4 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
109 111first strand
Strand 2
A
128 130anti-parallel
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There are 4 strands in AB5 sheet. Click on strand of interest for CSU analysis.
Strand
number 		Chain
ID		 Initial
residue		Terminal
residue		 Strand sense
Strand 1
A
154 164first strand
Strand 2
A
141 151anti-parallel
Strand 3
A
179 186anti-parallel
Strand 4
A
172 176anti-parallel
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