Contacts of the helix formed by residues 84 - 90 (chain F) in PDB entry 1W4R
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 VAL 84 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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51F LEU* 4.7 0.6 - - + +
53F ILE* 3.6 32.8 - - + -
76F LEU* 3.7 33.7 - - + -
77F PRO 4.4 3.1 - - - +
78F ALA* 4.1 21.5 - - + -
81F LEU* 3.0 17.2 + - - +
83F ASP* 1.3 83.8 - - + +
85F ALA* 1.3 63.5 + - - +
86F GLN 3.3 3.1 - - - -
87F GLU* 3.2 16.9 + - + +
88F ALA* 3.0 20.4 + - - +
108F PHE* 4.9 1.1 - - + -
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Residues in contact with ALA 85 (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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81F LEU 3.4 4.3 + - - +
82F ARG* 3.1 26.9 + - + +
83F ASP 3.5 0.4 - - - -
84F VAL* 1.3 77.1 - - - +
86F GLN* 1.3 63.7 + - - +
88F ALA* 3.2 3.0 + - - +
89F LEU* 2.9 32.2 + - + +
108F PHE* 4.3 3.4 - - + -
112F MET* 3.7 19.0 - - + +
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Residues in contact with GLN 86 (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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83F ASP 5.4 0.2 + - - -
84F VAL 3.3 0.8 - - - -
85F ALA* 1.3 79.2 - - - +
87F GLU* 1.3 73.4 + - + +
89F LEU* 3.3 17.9 + - + +
90F GLY* 3.7 6.9 + - - -
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Residues in contact with GLU 87 (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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51F LEU* 4.1 8.7 - - + -
76F LEU* 4.1 29.4 - - + +
83F ASP 3.9 5.2 - - - +
84F VAL* 3.2 30.9 + - - +
86F GLN* 1.3 84.1 + - + +
88F ALA* 1.3 62.5 + - - +
90F GLY* 3.2 15.1 + - - -
91F VAL* 3.9 12.3 + - - +
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Residues in contact with ALA 88 (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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51F LEU* 3.8 15.8 - - + +
84F VAL 3.0 16.8 + - - +
85F ALA 3.2 4.7 + - - +
87F GLU* 1.3 75.1 - - - +
89F LEU* 1.3 64.2 + - - +
90F GLY 3.2 1.0 + - - -
91F VAL* 3.2 23.5 + - - +
94F ILE* 3.7 14.5 - - + +
108F PHE* 3.7 28.5 - - + -
112F MET* 3.9 6.1 - - + -
117F LYS* 3.7 5.9 - - - -
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Residues in contact with LEU 89 (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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85F ALA* 2.9 24.1 + - + +
86F GLN* 3.7 10.8 - - + +
87F GLU 3.3 0.6 - - - -
88F ALA* 1.3 76.8 - - - +
90F GLY* 1.3 56.7 + - - +
91F VAL 3.4 0.7 - - - -
112F MET* 4.0 23.6 - - + -
115F ALA* 5.0 9.6 - - + -
117F LYS* 2.9 28.5 + - - +
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Residues in contact with GLY 90 (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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49F LYS* 3.7 23.7 + - - +
86F GLN 3.7 4.3 + - - -
87F GLU 3.2 7.8 + - - -
88F ALA 3.1 1.4 - - - -
89F LEU* 1.3 78.3 - - - +
91F VAL* 1.3 64.2 + - - +
117F LYS* 4.8 0.2 - - - -
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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