Contacts of the helix formed by residues 3 - 12 (chain F) in PDB entry 2QAR
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 ASN 3 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1F GLY* 5.0 4.2 - - - -
2F PRO* 1.3 76.2 - - - +
4F ILE* 1.3 71.1 + - + +
5F PHE* 3.2 25.1 + - - +
6F GLU* 3.3 38.8 + - - +
7F MET* 3.4 8.5 + - - +
159F TRP* 3.8 20.2 - - - -
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Residues in contact with ILE 4 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3F ASN* 1.3 80.1 - - + +
5F PHE* 1.3 64.9 + - - +
7F MET* 3.4 18.7 - - - +
8F LEU* 3.8 18.2 + - + +
68F PHE* 3.8 15.9 - - + -
72F VAL* 4.6 13.9 - - + -
98F CYS* 3.8 38.6 - - + +
101F ILE* 4.4 18.2 - - + -
159F TRP* 3.8 9.6 - - + -
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Residues in contact with PHE 5 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3F ASN* 3.2 17.9 + - - +
4F ILE* 1.3 79.3 - - + +
6F GLU* 1.3 77.7 + - + +
7F MET 3.3 0.3 + - - -
8F LEU* 3.5 3.8 + - - +
9F ARG* 3.2 27.8 + - + +
14F LEU* 4.7 14.6 - - + -
30F ILE* 3.5 26.8 - - + +
65F GLU* 3.7 38.4 - - + -
68F PHE* 3.5 32.0 - + + -
69F CYS* 5.9 2.2 - - - -
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Residues in contact with GLU 6 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1F GLY* 4.6 18.2 + - - -
2F PRO* 4.9 3.6 - - + -
3F ASN* 3.3 33.5 + - - +
5F PHE* 1.3 89.8 - - + +
7F MET* 1.3 62.2 + - - +
9F ARG* 3.3 9.4 + - - +
10F ILE* 3.2 39.8 + - + +
162F TYR* 5.5 3.1 - - + -
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Residues in contact with MET 7 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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3F ASN 3.4 9.7 + - - +
4F ILE* 3.4 15.7 - - - +
5F PHE 3.2 0.2 - - - -
6F GLU* 1.3 80.0 - - - +
8F LEU* 1.3 59.5 + - + +
10F ILE* 3.6 3.3 + - - +
11F ASP* 3.2 31.2 + - - -
98F CYS* 3.6 30.1 - - + +
99F ALA* 3.7 29.8 - - + +
102F ASN* 3.4 22.4 - - - +
150F VAL* 5.1 3.1 - - + -
153F THR* 4.1 19.1 - - + +
159F TRP* 4.5 9.2 - - + -
162F TYR* 3.5 40.8 - - + +
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Residues in contact with LEU 8 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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4F ILE* 3.8 22.2 + - + +
5F PHE 3.5 3.0 + - - -
7F MET* 1.3 77.7 - - + +
9F ARG* 1.3 60.0 + - - +
10F ILE 3.2 1.6 - - - -
11F ASP* 3.9 3.6 - - + +
12F GLU* 3.2 14.7 + - + +
13F GLY 2.9 24.8 + - - -
30F ILE* 3.4 20.1 - - + +
68F PHE* 4.0 22.0 - - + -
102F ASN* 4.3 25.8 - - - +
105F PHE* 3.5 37.9 - - + -
146F ARG* 3.5 25.8 - - - +
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Residues in contact with ARG 9 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5F PHE* 3.2 32.9 + - + +
6F GLU* 3.3 16.8 + - - +
8F LEU* 1.3 78.3 - - - +
10F ILE* 1.3 60.7 + - + +
13F GLY* 3.4 18.8 - - - -
14F LEU* 4.1 11.1 + - + +
30F ILE* 4.7 5.4 - - + +
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Residues in contact with ILE 10 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6F GLU* 3.2 26.7 + - + +
7F MET 3.8 3.4 - - - +
9F ARG* 1.3 81.7 - - + +
11F ASP* 1.3 74.1 + - - +
13F GLY* 4.3 3.0 + - - -
149F ARG* 4.2 21.0 + - - +
162F TYR* 3.6 37.0 - - + +
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Residues in contact with ASP 11 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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7F MET 3.2 14.0 + - - +
8F LEU* 4.4 3.1 - - - -
10F ILE* 1.3 82.3 - - - +
12F GLU* 1.3 62.3 + - - +
102F ASN* 2.9 25.8 + - - +
146F ARG* 3.6 42.3 + - - +
149F ARG* 3.1 34.7 + - - +
150F VAL* 4.3 1.6 - - - +
162F TYR* 3.3 13.5 + - - -
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Residues in contact with GLU 12 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8F LEU* 3.2 18.7 + - + +
11F ASP* 1.3 78.0 - - - +
13F GLY* 1.3 65.7 + - - +
19F TYR* 3.2 20.9 + - - +
21F ASP* 6.4 1.6 - - + -
27F THR* 5.7 0.4 - - + -
30F ILE* 4.3 4.9 - - + -
31F GLY* 3.4 31.3 + - - -
105F PHE* 3.7 35.1 - - - +
106F GLN* 4.1 4.9 - - - +
146F ARG* 3.1 26.3 + - - +
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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