Contacts of the helix formed by residues 89 - 93 (chain I) in PDB entry 2QJK
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 89 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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86I ARG 4.7 4.0 + - - -
87I SER 3.8 10.9 + - - -
88I VAL* 1.3 76.5 - - - +
90I LEU* 1.3 56.2 + - - +
91I GLY* 2.4 10.9 + - - +
92I GLN* 2.4 59.1 + - + +
93I LEU* 3.5 4.2 + - - +
84R LEU* 5.0 15.0 - - - +
87R SER* 3.1 28.0 + - - +
92R GLN* 5.7 1.1 - - - +
163R ARG* 6.0 4.0 - - - +
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Residues in contact with LEU 90 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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88I VAL 3.7 2.6 + - - -
89I GLN* 1.3 70.5 - - - +
91I GLY* 1.3 62.8 + - - +
93I LEU* 3.3 26.0 + - + +
96I THR* 4.3 22.5 + - + +
108I GLU* 3.0 57.4 - - + +
109I ALA* 3.8 17.0 - - + +
110I THR* 3.9 19.7 - - + +
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Residues in contact with GLY 91 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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89I GLN* 2.4 15.4 + - - +
90I LEU* 1.3 78.6 - - - +
92I GLN* 1.3 56.8 + - - -
93I LEU 3.0 11.8 + - - +
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Residues in contact with GLN 92 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
87I SER 3.1 20.0 + - - -
88I VAL* 3.2 14.6 - - + +
89I GLN* 2.4 66.8 + - + +
91I GLY* 1.3 66.2 - - - -
93I LEU* 1.3 62.0 + - - -
94I VAL* 4.1 1.9 + - - +
163I ARG* 4.0 25.0 + - - +
87R SER 4.0 1.4 + - - -
89R GLN* 4.1 4.7 + - - +
92R GLN* 2.8 43.7 + - - +
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Residues in contact with LEU 93 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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88I VAL* 3.2 29.4 - - + -
89I GLN 3.8 4.3 - - - +
90I LEU* 3.5 25.1 - - + +
91I GLY 3.0 9.3 + - - +
92I GLN* 1.3 82.3 - - - +
94I VAL* 1.3 60.8 + - - +
95I ASP 3.3 14.6 - - - +
96I THR* 4.9 5.3 + - - +
109I ALA* 3.1 46.0 - - + +
161I ARG* 3.6 18.6 - - + +
162I ILE 5.4 0.9 - - - +
163I ARG* 3.9 17.9 - - - +
170I ASN* 5.7 0.4 - - - +
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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