Contacts of the helix formed by residues 14 - 18 (chain E) in PDB entry 1WOI
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 THR 14 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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12A ILE* 4.2 20.0 - - + -
20A LEU* 5.8 4.3 - - + -
12E ILE* 3.1 15.3 + - + +
13E PRO* 1.3 79.1 - - - +
15E PHE* 1.3 60.8 + - - +
16E ALA 3.2 0.9 + - - -
17E ARG* 2.8 34.1 + - - +
18E ALA 2.6 29.3 + - - +
20E LEU* 4.6 14.1 - - + +
56E ARG* 3.9 3.4 - - - +
59E SER* 3.7 1.6 + - - -
60E LEU* 3.7 8.5 - - - +
82E ASP* 3.4 17.3 - - + +
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Residues in contact with PHE 15 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14E THR* 1.3 65.4 - - - +
16E ALA* 1.3 68.1 + - + +
17E ARG 2.9 4.3 - - - -
18E ALA* 2.9 25.8 + - - +
31E VAL* 5.9 0.9 - - + -
33E ALA* 3.7 26.9 - - + -
55E LEU* 4.2 14.1 - - + -
56E ARG* 3.8 10.8 - - + +
59E SER* 3.6 21.8 - - - -
80E PHE* 4.9 6.9 - + - +
81E ALA 5.3 1.0 - - - +
82E ASP* 2.7 18.3 + - - +
115E VAL* 4.7 7.0 - - + -
117E LEU* 4.0 29.2 - - + -
290E ALA* 4.8 4.9 - - + -
293E VAL* 3.6 34.1 - - + -
294E MET* 3.8 27.4 - - + -
297E LEU* 5.0 5.6 - - + -
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Residues in contact with ALA 16 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15E PHE* 1.3 82.9 - - + +
17E ARG* 1.3 67.5 + - - +
18E ALA* 3.1 1.8 + - - +
59E SER* 2.8 27.0 + - - -
62E SER 4.9 0.9 - - - -
63E VAL* 3.7 17.4 - - - +
64E PRO* 3.8 21.2 - - + +
80E PHE* 3.8 32.1 - - + +
294E MET* 4.4 4.9 - - + -
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Residues in contact with ARG 17 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6E HIS* 3.5 31.3 + - - +
7E LEU 3.0 29.3 + - - -
8E PRO* 4.1 0.4 - - - +
10E GLY 2.8 22.4 + - - -
11E GLY* 4.0 6.1 - - - -
12E ILE 4.4 7.4 + - - +
14E THR* 2.8 27.0 + - - +
16E ALA* 1.3 80.8 - - - +
18E ALA* 1.3 58.6 + - - +
19E PRO* 4.6 0.9 - - - +
60E LEU* 3.7 41.5 + - + +
63E VAL* 4.0 20.7 - - + +
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Residues in contact with ALA 18 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14E THR* 2.6 29.2 + - - +
15E PHE 2.9 16.9 + - - +
16E ALA 3.0 2.6 - - - +
17E ARG* 1.3 78.4 - - - +
19E PRO* 1.3 76.3 - - + +
80E PHE* 3.6 15.0 - - + -
81E ALA* 3.5 31.2 - - - +
82E ASP 4.1 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