Contacts of the helix formed by residues 57 - 62 (chain D) in PDB entry 1VHA
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 ASP 57 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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47D ASP* 3.2 15.7 - - - +
50D LEU* 3.3 18.5 - - - +
55D LEU 3.3 4.8 + - - +
56D GLY* 1.3 75.3 - - - +
58D ILE* 1.3 64.7 + - + +
59D GLY* 2.5 32.1 + - - -
60D LYS* 3.1 15.0 + - - +
61D LEU 4.3 1.0 + - - -
107E ARG* 2.6 31.5 + - - +
130E VAL 5.1 0.3 - - - +
131E LYS* 3.6 30.8 - - + +
132E ALA 4.2 10.8 + - - +
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Residues in contact with ILE 58 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9D ASP* 6.2 0.4 - - - +
43D HIS* 3.8 36.3 - - + +
46D THR* 3.9 21.8 - - + +
47D ASP* 2.8 27.8 + - - +
50D LEU* 3.4 11.2 - - - +
57D ASP* 1.3 72.5 - - + +
59D GLY* 1.3 66.5 + - - +
60D LYS 3.2 0.2 - - - -
61D LEU* 3.2 31.6 + - + +
77D LEU* 3.4 31.2 - - + +
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Residues in contact with GLY 59 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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57D ASP* 2.5 22.1 + - - -
58D ILE* 1.3 79.5 - - - +
60D LYS* 1.3 54.1 - - - +
61D LEU 3.2 3.6 + - - -
62D PHE 4.3 9.7 + - - +
107E ARG* 3.8 13.5 + - - -
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Residues in contact with LYS 60 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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55D LEU 4.2 16.8 - - - +
56D GLY* 4.0 17.6 - - - +
57D ASP 3.1 9.8 + - - +
59D GLY* 1.3 75.1 - - - +
61D LEU* 1.3 63.6 + - - +
62D PHE* 3.3 5.6 + - - -
84D GLN* 5.1 5.4 + - - +
107E ARG* 3.1 49.3 - - - +
110E ILE* 5.2 10.9 - - - +
111E ASP* 4.8 11.3 + - - -
114E ARG* 5.6 5.5 - - - +
130E VAL 5.5 0.8 + - - -
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Residues in contact with LEU 61 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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46D THR* 4.2 6.7 - - + -
50D LEU* 4.1 16.6 - - + -
58D ILE* 3.2 26.2 + - + +
59D GLY 3.2 1.2 - - - -
60D LYS* 1.3 78.6 - - - +
62D PHE* 1.3 77.7 + - + +
63D PRO* 4.7 0.3 - - - +
77D LEU* 3.2 60.3 - - + +
80D GLU* 3.5 19.4 - - + +
81D ALA* 4.0 12.6 - - - -
84D GLN* 3.4 30.3 + - - +
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Residues in contact with PHE 62 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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59D GLY 4.3 10.4 + - - +
60D LYS* 3.3 3.4 - - - -
61D LEU* 1.3 98.4 - - + +
63D PRO* 1.3 79.2 - - + +
71D ASN* 4.2 34.3 - - + +
76D GLY 5.7 1.6 - - - -
77D LEU* 3.5 30.5 - - + -
80D GLU* 3.9 28.0 - - + -
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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