Contacts of the helix formed by residues 174 - 189 (chain a) in PDB entry 6QY3
Residue contacts within the protein 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). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with SER 174 (chain a).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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172a TYR 3.9 2.0 + - - -
173a PHE* 1.3 76.2 - - - +
175a LYS* 1.3 55.2 + - - +
176a ASP* 3.2 8.3 - - - -
177a GLU* 2.9 13.0 + - - +
178a ILE* 2.7 34.1 + - - +
25b VAL* 4.9 12.5 - - - +
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Residues in contact with LYS 175 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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173a PHE 4.0 0.2 + - - -
174a SER* 1.3 72.5 - - - +
176a ASP* 1.3 57.6 + - - +
178a ILE* 3.1 9.7 + - - +
179a TYR* 2.9 26.7 + - - +
201a GLU 5.0 11.2 - - - +
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Residues in contact with ASP 176 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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174a SER* 3.2 5.0 - - - -
175a LYS* 1.3 77.8 - - - +
177a GLU* 1.3 58.9 + - - +
179a TYR* 3.1 9.8 + - - +
180a GLN* 2.9 27.0 + - - +
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Residues in contact with GLU 177 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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145a PHE* 5.1 14.1 - - + -
173a PHE* 3.9 13.1 - - + +
174a SER* 2.9 26.3 + - - +
176a ASP* 1.3 79.1 - - - +
178a ILE* 1.3 57.5 + - - +
180a GLN* 3.4 8.2 + - - +
181a ILE* 2.9 28.4 + - - +
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Residues in contact with ILE 178 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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170a LEU* 6.0 6.3 - - + +
173a PHE* 4.5 9.1 - - + +
174a SER 2.7 16.0 + - - +
175a LYS* 3.1 13.4 + - - +
177a GLU* 1.3 71.5 - - - +
179a TYR* 1.3 58.8 + - - +
181a ILE* 3.3 7.0 + - - +
182a LEU* 2.9 29.3 + - - +
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Residues in contact with TYR 179 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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175a LYS 2.9 12.4 + - - +
176a ASP* 3.1 12.5 + - - +
178a ILE* 1.3 77.2 - - - +
180a GLN* 1.3 55.7 + - - +
182a LEU* 3.3 6.4 + - - +
183a GLU* 2.9 30.8 + - - +
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Residues in contact with GLN 180 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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176a ASP 2.9 14.9 + - - +
177a GLU* 3.7 9.0 - - - +
178a ILE 3.3 0.2 - - - -
179a TYR* 1.3 75.7 - - - +
181a ILE* 1.3 58.1 + - - +
183a GLU* 3.9 6.4 - - - +
184a TYR* 2.9 30.5 + - - +
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Residues in contact with ILE 181 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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148a ILE* 6.5 0.4 - - + -
177a GLU 2.9 18.3 + - - +
178a ILE* 3.7 7.9 - - - +
179a TYR 3.3 0.2 - - - -
180a GLN* 1.3 73.9 - - - +
182a LEU* 1.3 60.5 + - - +
184a TYR* 3.5 5.0 + - - +
185a THR* 2.9 29.5 + - - -
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Residues in contact with LEU 182 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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17a GLY* 5.6 6.2 + - - -
178a ILE 2.9 17.2 + - - +
179a TYR* 3.8 6.3 - - - +
180a GLN 3.3 0.2 - - - -
181a ILE* 1.3 74.3 - - - +
183a GLU* 1.3 59.6 + - - +
185a THR* 3.2 7.3 + - - -
186a LYS* 2.9 28.9 + - - +
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Residues in contact with GLU 183 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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179a TYR 2.9 17.6 + - - +
180a GLN* 3.9 6.1 - - - +
182a LEU* 1.3 77.5 - - - +
184a TYR* 1.3 57.8 + - - +
186a LYS* 3.3 7.5 + - - +
187a LEU* 2.9 29.0 + - - +
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Residues in contact with TYR 184 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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180a GLN 2.9 19.4 + - - +
181a ILE* 3.8 6.5 - - - +
183a GLU* 1.3 76.1 - - - +
185a THR* 1.3 57.6 + - - +
187a LEU* 3.4 6.4 + - - +
188a SER* 2.9 31.0 + - - -
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Residues in contact with THR 185 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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16a LEU* 4.7 2.9 - - - +
17a GLY* 4.3 21.3 - - - -
181a ILE 2.9 18.3 + - - -
182a LEU* 3.6 8.1 - - - -
183a GLU 3.2 0.2 - - - -
184a TYR* 1.3 77.5 - - - +
186a LYS* 1.3 57.3 + - - +
188a SER* 3.4 4.9 + - - +
189a GLN* 3.0 27.9 + - - -
190a ALA* 3.8 12.7 + - - +
192a VAL* 5.1 9.4 - - - -
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Residues in contact with LYS 186 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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16a LEU* 4.6 15.4 - - + +
17a GLY 5.2 0.4 - - - +
182a LEU 2.9 17.1 + - - +
183a GLU* 3.3 6.9 + - - +
185a THR* 1.3 76.0 - - - +
187a LEU* 1.3 61.7 + - - +
189a GLN* 3.7 9.2 + - - +
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Residues in contact with LEU 187 (chain a).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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183a GLU 2.9 16.8 + - - +
184a TYR* 3.8 7.6 - - - +
185a THR 3.2 0.4 - - - -
186a LYS* 1.3 79.8 - - - +
188a SER* 1.3 59.0 + - - +
189a GLN* 3.4 1.6 + - - +
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Residues in contact with SER 188 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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152a LEU* 5.7 7.0 - - - -
156a LYS* 5.1 15.2 - - - +
184a TYR 2.9 18.0 + - - -
185a THR* 3.4 5.4 + - - -
187a LEU* 1.3 75.8 - - - +
189a GLN* 1.3 62.6 + - - +
190a ALA* 3.0 19.6 + - - +
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Residues in contact with GLN 189 (chain a).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16a LEU* 4.7 8.8 + - - -
185a THR 3.0 10.4 + - - -
186a LYS* 3.7 8.2 + - - +
187a LEU 3.4 5.2 - - - +
188a SER* 1.3 75.9 - - - +
190a ALA* 1.3 65.0 + - - +
191a ASP* 3.8 0.9 + - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il