Contacts of the helix formed by residues 168 - 177 (chain V) in PDB entry 1H2I
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 168 (chain V).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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69U HIS* 3.5 35.8 + - + +
70U ARG* 4.2 6.3 + - - -
186U VAL* 5.0 0.7 - - - +
46V ARG* 3.0 28.4 + - - -
165V CYS* 2.6 23.9 + - - +
166V ILE 3.4 0.4 - - - -
167V LEU* 1.3 69.3 - - - +
169V LYS* 1.3 59.9 + - - +
170V ASP* 3.2 23.1 + - - +
171V TYR* 2.9 32.6 + - + +
172V LEU* 3.0 12.6 + - - +
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Residues in contact with LYS 169 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
65U TYR* 5.4 4.2 + - - -
67U GLU* 4.2 23.5 + - - +
69U HIS* 5.1 1.2 - - - -
167V LEU 3.3 9.1 + - - +
168V ASP* 1.3 72.1 + - - +
170V ASP* 1.3 59.9 + - - +
172V LEU* 3.4 14.6 + - + +
173V ARG* 2.9 31.1 + - - +
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Residues in contact with ASP 170 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
70U ARG* 3.9 15.8 + - - -
183U PRO* 3.0 16.9 - - - +
184U LEU* 3.5 29.2 + - + +
186U VAL* 3.4 18.3 - - + +
168V ASP* 3.1 12.8 + - - +
169V LYS* 1.3 75.5 - - - +
171V TYR* 1.3 61.6 + - - +
173V ARG* 2.7 32.9 + - - +
174V SER* 3.2 22.5 + - - -
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Residues in contact with TYR 171 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
186U VAL* 3.9 9.8 - - + +
188U LEU* 4.1 14.8 - - + -
46V ARG* 3.7 38.4 - - + +
47V LEU* 2.6 30.0 + - - -
52V ILE* 3.5 23.9 - - + +
165V CYS* 3.6 34.5 - - + -
166V ILE* 4.2 9.9 - - - -
168V ASP* 2.9 24.1 + - + +
170V ASP* 1.3 75.6 - - - +
172V LEU* 1.3 78.9 + - + +
174V SER* 3.3 3.3 + - - -
175V LEU* 3.0 44.0 + - + +
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Residues in contact with LEU 172 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
52V ILE* 5.4 0.2 - - + -
64V CYS* 3.9 34.5 - - + -
166V ILE* 3.6 26.7 - - + +
167V LEU* 4.6 4.7 - - - +
168V ASP 3.0 16.5 + - - +
169V LYS* 3.6 18.8 - - + +
171V TYR* 1.3 92.4 - - + +
173V ARG* 1.3 61.9 + - - +
175V LEU* 2.9 21.7 + - + +
176V ASN* 3.1 21.8 + - - +
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Residues in contact with ARG 173 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
183U PRO* 3.2 19.1 - - - +
184U LEU 3.0 20.8 + - - -
185U GLU* 2.9 23.0 + - - -
169V LYS* 2.9 15.8 + - - +
170V ASP* 2.7 36.5 + - - +
172V LEU* 1.3 76.0 - - - +
174V SER* 1.3 63.7 - - - +
175V LEU 3.1 1.4 + - - -
176V ASN* 3.1 23.2 + - - +
177V LYS* 3.5 30.0 + - - +
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Residues in contact with SER 174 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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185U GLU* 5.1 11.7 - - - -
186U VAL* 3.1 32.2 + - - +
188U LEU* 3.4 24.3 - - - +
170V ASP 3.2 15.9 + - - -
171V TYR 3.3 2.9 + - - -
173V ARG* 1.3 79.0 - - - +
175V LEU* 1.3 60.1 + - - +
177V LYS* 3.8 21.6 + - - +
178V LEU* 3.8 7.8 - - - +
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Residues in contact with LEU 175 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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188U LEU* 3.9 10.8 - - + -
47V LEU 4.7 0.9 - - - +
48V GLY 4.5 3.1 - - - -
49V PRO* 3.8 40.1 - - + +
52V ILE* 3.6 35.7 - - + -
64V CYS* 5.6 1.8 - - - -
171V TYR* 3.0 35.5 + - + +
172V LEU* 2.9 19.6 + - + +
174V SER* 1.3 76.8 - - - +
176V ASN* 1.3 62.9 + - - +
177V LYS 3.2 0.4 - - - -
178V LEU* 3.1 29.1 - - + +
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Residues in contact with ASN 176 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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62V LYS* 3.8 28.4 + - - +
64V CYS* 5.9 2.8 - - - -
172V LEU* 3.1 20.8 + - - +
173V ARG* 3.1 12.7 + - - +
175V LEU* 1.3 73.3 - - - +
177V LYS* 1.3 58.2 + - + +
178V LEU 2.8 19.5 + - - +
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Residues in contact with LYS 177 (chain V).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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185U GLU* 3.5 34.2 + - - +
173V ARG* 3.5 32.3 + - - +
174V SER* 4.0 15.0 - - - +
175V LEU 3.2 1.0 - - - -
176V ASN* 1.3 74.8 - - + +
178V LEU* 1.3 65.0 + - - +
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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
------------------------------------------------------------
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