Contacts of the helix formed by residues 32 - 37 (chain F) in PDB entry 4CEV
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 32 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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6F ILE* 3.9 21.5 - - + -
27F MET 3.3 19.5 + - - +
28F ARG* 3.9 16.9 + - + -
30F ALA 3.8 0.4 - - - -
31F GLY* 1.3 76.0 - - - +
33F ILE* 1.3 69.7 + - + +
35F ARG* 3.5 1.6 - - + +
36F LEU* 3.2 39.8 + - + +
93F LEU* 4.6 1.1 - - + -
95F LEU* 4.4 11.9 - - + -
287F VAL* 3.9 17.0 - - + +
290F MET* 3.7 31.6 - - + -
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Residues in contact with ILE 33 (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 ILE* 3.4 30.1 - - + -
28F ARG* 5.3 5.4 + - + +
31F GLY 3.3 0.6 - - - -
32F VAL* 1.3 80.5 - - + +
34F GLU* 1.3 74.8 + - - +
36F LEU* 3.2 3.1 + - - +
37F GLU* 2.8 58.8 + - + +
43F ILE* 3.7 20.6 - - + +
45F ASP* 4.3 25.4 - - + +
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Residues in contact with GLU 34 (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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28F ARG 4.3 3.6 - - - +
31F GLY* 3.3 28.6 - - - +
33F ILE* 1.3 90.4 + - - +
35F ARG* 1.3 63.8 + - - +
37F GLU* 3.2 14.1 + - - +
38F ARG* 3.0 43.1 + - + +
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Residues in contact with ARG 35 (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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31F GLY 3.1 15.5 + - - +
32F VAL* 3.5 6.1 - - - +
34F GLU* 1.3 80.4 - - - +
36F LEU* 1.3 61.3 + - + +
38F ARG* 3.4 41.4 + - - +
39F LEU* 3.7 12.5 - - - +
252F HIS* 5.5 1.6 - - - -
284F SER 5.6 0.4 + - - -
287F VAL* 3.9 29.9 - - + +
288F ALA* 3.5 34.8 + - - +
291F GLY* 4.2 9.7 - - - +
296F GLU* 2.9 40.4 + - - +
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Residues in contact with LEU 36 (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* 4.1 7.4 - - + -
32F VAL* 3.2 27.8 + - + +
33F ILE 3.9 2.5 - - - +
35F ARG* 1.3 78.6 - - + +
37F GLU* 1.3 65.7 + - - +
38F ARG 3.2 1.8 - - - -
39F LEU* 3.2 17.9 + - + +
41F TYR* 3.3 29.2 + - + +
43F ILE* 3.9 27.1 - - + -
93F LEU* 3.7 29.8 - - + -
290F MET* 4.2 13.0 - - + +
291F GLY* 4.6 2.0 - - - -
294F PHE* 3.4 37.2 - - + -
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Residues in contact with GLU 37 (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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33F ILE* 2.8 41.0 + - - +
34F GLU* 3.6 14.9 - - - +
36F LEU* 1.3 75.8 - - - +
38F ARG* 1.3 59.7 + - + +
40F HIS* 2.9 24.1 + - - -
41F TYR 3.9 10.6 + - - +
43F ILE* 3.3 20.6 - - + +
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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