Contacts of the strand formed by residues 174 - 177 (chain A) in PDB entry 1WVA
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 ILE 174 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
120A VAL* 3.2 32.3 - - + +
122A TRP* 3.9 21.5 - - + -
145A VAL* 5.4 8.1 - - + -
149A LEU* 4.4 20.6 - - + -
169A ILE* 5.5 6.5 - - + -
170A SER 4.7 1.1 - - - +
171A ALA 3.7 10.1 - - - +
172A LYS 3.6 1.2 + - - -
173A ASP* 1.3 79.2 - - - +
175A VAL* 1.3 91.5 + - - +
176A TYR* 4.1 20.6 - - + -
195A ILE* 3.5 22.6 - - + +
196A LYS* 3.6 14.7 + - - +
218A TYR* 4.2 1.4 - - - -
219A LEU* 4.4 0.2 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 175 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
120A VAL 2.7 11.4 + - - +
121A ILE* 3.3 6.4 - - + +
122A TRP 2.7 31.5 + - - -
174A ILE* 1.3 84.3 - - - +
176A TYR* 1.3 69.9 + - - +
177A ILE* 4.4 2.5 - - + -
196A LYS* 3.4 9.6 - - + +
198A PHE* 3.8 15.7 - - + -
215A THR* 3.7 28.0 - - + +
218A TYR* 3.5 19.3 - - + -
219A LEU* 3.4 34.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 176 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
122A TRP* 3.4 40.8 - + + -
127A THR* 2.7 38.2 + - + -
129A ILE* 3.6 10.0 - - + +
145A VAL* 3.6 21.3 - - + +
174A ILE* 4.1 10.1 - - + -
175A VAL* 1.3 74.2 - - - +
177A ILE* 1.3 62.4 + - - +
179A LEU* 3.8 20.9 - - + -
190A LEU* 3.5 32.1 - - + -
195A ILE* 3.9 20.6 - - + -
196A LYS 3.1 10.4 + - - -
197A TYR* 3.5 13.6 - - + -
198A PHE* 2.7 29.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 177 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
121A ILE* 3.8 24.7 - - + -
122A TRP 3.0 7.5 + - - -
123A VAL* 3.3 15.8 - - + +
124A ASP 3.1 22.2 + - - -
175A VAL* 4.4 2.9 - - + -
176A TYR* 1.3 81.0 - - - +
178A GLY* 1.3 62.9 + - - +
179A LEU* 3.7 1.1 - - - +
198A PHE* 3.4 4.7 - - + +
203A VAL* 4.8 2.5 - - + -
208A ILE* 4.7 2.0 - - + -
211A VAL* 4.4 16.8 - - + -
212A MET* 3.9 21.3 - - - -
215A THR* 3.8 30.1 - - + +
252A LEU* 4.5 8.7 - - + -
260A ILE* 3.8 25.1 - - + -
----------------------------------------------------------
Back to top of page
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
------------------------------------------------------------
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) + - + + + + + -
------------------------------------------------------------
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