Contacts of the helix formed by residues 85 - 90 (chain A) in PDB entry 2WSC
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 GLN 85 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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82A HIS 2.8 13.6 + - - +
84A GLY* 1.3 75.9 - - - +
86A LEU* 1.3 63.6 + - + +
87A SER 2.9 3.5 - - - +
88A ILE* 3.1 4.9 - - - +
89A ILE* 2.6 52.3 + - + +
1760A CLA 3.2 14.2 - - - +
1761A CLA 3.4 52.2 - - + +
1762A CLA 3.1 60.8 + - + +
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Residues in contact with LEU 86 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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82A HIS 4.2 2.7 - - - -
83A PHE* 3.1 42.2 - - + +
85A GLN* 1.3 79.1 - - + +
87A SER* 1.3 53.2 + - - +
89A ILE* 2.9 12.0 + - + +
90A PHE* 2.7 45.3 + - + +
178A MET* 3.5 36.8 - - + -
1761A CLA 3.3 59.2 - - + +
1769A CLA 4.2 14.6 - - - +
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Residues in contact with SER 87 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
83A PHE 3.1 5.8 + - - -
84A GLY* 2.2 40.7 - - - +
85A GLN 2.9 0.9 - - - +
86A LEU* 1.3 76.2 - - - +
88A ILE* 1.4 53.7 + - - +
90A PHE* 3.5 12.4 - - - -
175A ALA* 3.7 11.8 - - - +
176A GLY 4.1 0.3 + - - -
178A MET 2.6 26.1 + - - -
179A LEU* 2.8 36.8 - - - +
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Residues in contact with ILE 88 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
84A GLY 3.4 15.3 - - - +
85A GLN* 3.1 25.4 - - - +
86A LEU 2.8 1.4 + - - -
87A SER* 1.4 71.1 + - - +
89A ILE* 1.3 62.2 - - + +
90A PHE 2.6 5.2 - - - +
91A LEU* 2.7 18.0 + - + +
92A TRP* 2.4 37.6 + - + +
179A LEU* 6.4 0.9 - - + -
1760A CLA 5.4 4.0 - - + -
1762A CLA 4.1 24.7 - - + -
1767A CLA 3.9 36.3 - - + -
1808A BCR 4.9 16.8 - - + -
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Residues in contact with ILE 89 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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85A GLN* 2.6 52.5 + - + +
86A LEU* 3.3 17.7 - - + +
88A ILE* 1.3 78.6 - - + +
90A PHE* 1.3 50.6 + - - +
92A TRP* 2.6 37.8 - - + +
93A LEU* 2.7 25.5 - - + +
1761A CLA 3.8 45.1 - - + +
1762A CLA 4.1 34.1 - - + -
1804A BCR 4.6 6.3 - - + -
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Residues in contact with PHE 90 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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86A LEU* 2.7 27.3 + - + +
87A SER* 3.5 6.5 - - - -
88A ILE 2.6 0.6 - - - -
89A ILE* 1.3 76.6 - - - +
91A LEU* 1.3 55.2 + - - +
92A TRP 2.8 15.0 - - - +
93A LEU* 3.9 8.3 - - + -
94A SER* 3.7 11.6 - - - -
171A ALA* 3.8 21.7 - - + +
172A LEU* 4.5 0.3 + - - -
174A PHE* 3.0 50.7 - + + +
175A ALA* 3.7 9.4 - - + +
178A MET* 3.3 30.3 - - + -
1761A CLA 3.0 58.8 - - + -
1769A CLA 4.4 1.1 - - + -
1803A BCR 4.8 5.6 - - + -
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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