Contacts of the helix formed by residues 36 - 43 (chain H) in PDB entry 5A2Q
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 LEU 36 (chain H).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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34H SER* 3.1 5.4 - - - -
35H ASP* 1.3 89.9 - - + +
37H LYS* 1.3 63.9 + - - +
38H ALA 3.0 3.3 + - - -
39H GLN* 2.7 36.1 + - - +
40H LEU* 3.3 31.6 + - + -
75H ILE* 4.1 21.8 - - + -
78H ARG* 3.2 46.4 - - + +
79H LEU* 4.9 10.1 - - + -
82H GLU* 3.9 28.3 - - - +
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Residues in contact with LYS 37 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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30H LEU 4.7 0.4 + - - -
31H GLU* 3.1 28.4 + - - +
32H MET* 2.9 30.2 + - - +
33H ASN 5.0 0.2 - - - -
34H SER 3.0 22.4 + - - +
35H ASP* 3.3 5.7 + - - +
36H LEU* 1.3 76.0 - - - +
38H ALA* 1.3 57.1 + - - +
40H LEU* 3.4 3.4 + - - +
41H ARG* 2.9 58.0 + - - +
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Residues in contact with ALA 38 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36H LEU 3.0 1.2 + - - -
37H LYS* 1.3 77.7 - - - +
39H GLN* 1.3 71.9 + - + +
41H ARG* 3.1 17.6 + - - +
42H GLU* 3.0 23.3 + - - +
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Residues in contact with GLN 39 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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35H ASP 5.0 2.8 + - - -
36H LEU* 2.7 45.1 + - - +
38H ALA* 1.3 81.0 - - + +
40H LEU* 1.3 58.3 + - - +
42H GLU* 3.1 11.8 + - - +
43H LEU* 3.0 37.0 + - + +
71H SER* 5.5 3.4 - - - +
74H LYS* 6.4 1.1 - - + -
75H ILE* 3.9 31.0 - - + +
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Residues in contact with LEU 40 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8H ILE* 4.3 2.8 - - - +
27H LEU* 4.3 15.5 - - + +
30H LEU* 3.4 46.4 - - + +
31H GLU* 2.9 29.7 - - + +
36H LEU* 3.3 29.3 + - + +
37H LYS 3.8 3.1 - - - +
38H ALA 3.3 0.2 - - - -
39H GLN* 1.3 75.8 - - - +
41H ARG* 1.3 61.4 + - - +
43H LEU* 3.2 24.1 - - + +
72H PHE* 5.7 1.3 - - + -
75H ILE* 4.0 22.0 - - + -
79H LEU* 4.2 21.3 - - + -
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Residues in contact with ARG 41 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8H ILE* 4.6 7.9 - - - +
31H GLU* 3.8 23.9 + - - +
37H LYS* 2.9 46.8 + - - +
38H ALA* 3.1 15.3 + - - +
40H LEU* 1.3 76.8 - - - +
42H GLU* 1.3 66.9 + - - +
43H LEU 3.6 3.8 - - - +
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Residues in contact with GLU 42 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10H LYS* 5.4 4.5 + - - -
38H ALA 3.0 12.4 + - - +
39H GLN* 3.5 12.9 - - - +
41H ARG* 1.3 79.8 - - - +
43H LEU* 1.3 72.1 + - + +
44H ASN* 5.2 0.5 - - - +
68H GLN* 3.5 11.9 + - - +
71H SER* 5.4 2.0 + - - -
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Residues in contact with LEU 43 (chain H).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
8H ILE* 3.9 10.9 - - - +
39H GLN* 3.0 18.9 + - + +
40H LEU* 3.2 22.1 + - + +
41H ARG 3.4 4.4 - - - +
42H GLU* 1.3 93.8 - - + +
44H ASN* 1.3 60.7 + - - +
68H GLN* 3.3 24.5 - - + +
71H SER* 3.2 34.8 - - - +
72H PHE* 4.0 34.1 - - + +
75H ILE* 4.0 23.3 - - + -
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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