Contacts of the helix formed by residues 112 - 119 (chain X) in PDB entry 2QW0
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 GLN 112 (chain X).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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90X SER* 4.0 6.7 + - - +
109X VAL 3.8 14.0 + - - +
113X VAL* 1.3 65.4 + - - +
114X ALA* 3.2 14.7 - - - +
115X ASP* 3.5 26.3 - - - +
116X ALA* 3.4 18.5 + - - +
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Residues in contact with VAL 113 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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60X VAL* 6.2 1.3 - - + -
90X SER* 3.7 21.2 + - - +
93X LEU* 4.9 16.8 - - + -
107X ILE* 4.9 4.5 - - + -
109X VAL* 3.9 27.6 + - + -
112X GLN* 1.3 76.2 - - - +
114X ALA* 1.3 63.3 + - - +
116X ALA* 3.3 4.0 + - - +
117X ILE* 3.2 34.4 + - + +
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Residues in contact with ALA 114 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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107X ILE* 3.7 27.3 - - + +
109X VAL 4.7 3.7 + - - +
112X GLN 3.6 8.9 - - - +
113X VAL* 1.3 75.5 - - - +
115X ASP* 1.3 67.7 + - - +
117X ILE* 3.4 12.7 + - - +
118X PHE* 3.4 12.5 + - - +
126X ILE* 5.3 9.9 - - + +
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Residues in contact with ASP 115 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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112X GLN* 3.5 25.3 + - - +
114X ALA* 1.3 80.7 - - - +
116X ALA* 1.3 62.8 + - - +
118X PHE* 3.4 8.8 + - - +
119X GLN* 3.2 34.7 + - - +
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Residues in contact with ALA 116 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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90X SER* 3.8 37.2 - - - +
91X ALA* 4.9 0.9 - - - +
94X ALA* 4.0 5.6 - - + +
112X GLN 3.4 4.8 + - - +
113X VAL 3.3 9.3 + - - +
115X ASP* 1.3 78.8 - - - +
117X ILE* 1.3 62.5 + - - +
119X GLN* 3.0 19.7 + - - +
120X SER* 3.1 15.2 + - - -
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Residues in contact with ILE 117 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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60X VAL* 6.0 0.4 - - + -
90X SER 5.9 0.2 - - - +
93X LEU* 5.7 4.3 - - + -
94X ALA* 4.4 14.1 - - + +
97X ILE* 4.1 29.6 - - + -
105X ALA* 4.7 6.1 - - + -
107X ILE* 4.3 22.9 - - + -
113X VAL* 3.2 25.2 + - + +
114X ALA* 3.9 9.2 - - - +
115X ASP 3.3 0.2 - - - -
116X ALA* 1.3 71.1 - - - +
118X PHE* 1.3 71.0 + - - +
119X GLN 3.0 0.2 + - - -
120X SER* 2.9 24.0 + - - +
121X GLY 4.2 1.0 + - - -
122X SER* 4.4 18.7 - - - +
124X ALA* 4.3 22.7 - - + +
126X ILE* 5.1 10.1 - - + -
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Residues in contact with PHE 118 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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114X ALA 3.4 8.0 + - - +
115X ASP* 3.4 11.0 + - - +
117X ILE* 1.3 80.2 - - - +
119X GLN* 1.3 80.0 + - + +
120X SER 3.2 3.6 + - - -
121X GLY* 3.7 10.7 + - - -
122X SER 4.8 3.9 - - - +
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Residues in contact with GLN 119 (chain X).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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115X ASP* 3.2 27.9 + - - +
116X ALA* 3.0 11.5 + - - +
117X ILE 3.0 1.4 + - - -
118X PHE* 1.3 101.3 - - + +
120X SER* 1.3 58.8 + - - +
121X GLY 3.4 1.3 - - - -
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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