Contacts of the helix formed by residues 188 - 192 (chain F) in PDB entry 2Q5E
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 PHE 188 (chain F).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
195A HIS* 3.4 32.5 - + - -
196A GLN* 3.0 29.1 + - + -
161F LEU* 4.5 4.3 - - + -
162F PHE* 4.3 0.3 - - - -
163F THR* 3.1 33.4 - - + +
165F SER 3.3 7.9 - - - +
166F LEU* 4.6 0.2 - - - -
167F ALA* 3.6 27.4 - - + +
170F ALA* 3.7 21.1 - - + -
171F ASP* 3.3 25.1 - - - -
186F ARG* 3.7 29.4 - - + -
187F LEU* 1.3 71.9 - - - +
189F ARG* 1.3 71.3 + - - +
190F GLU* 3.2 11.0 - - - +
191F SER* 2.9 15.5 + - - -
192F CYS* 3.5 5.0 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 189 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163F THR 3.5 1.1 + - - -
164F ALA* 2.6 35.8 + - - +
165F SER* 2.9 20.5 + - - +
166F LEU* 3.4 34.4 - - + +
188F PHE* 1.3 76.2 - - - +
190F GLU* 1.3 70.1 + - - +
192F CYS* 2.8 29.1 + - - +
199F TYR* 3.6 48.9 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 190 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
196A GLN* 2.6 34.9 + - - +
166F LEU* 3.1 32.0 - - - +
167F ALA* 5.4 2.4 + - - +
188F PHE* 4.0 8.5 - - - +
189F ARG* 1.3 73.8 - - - +
191F SER* 1.3 60.3 + - - +
192F CYS 3.4 6.4 - - - +
205F ARG* 4.1 5.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 191 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
196A GLN* 2.4 27.6 + - - +
90F LEU* 4.3 16.1 - - - +
162F PHE* 3.5 25.8 - - - -
187F LEU* 3.7 20.5 - - - +
188F PHE 2.9 9.3 + - - -
190F GLU* 1.3 74.6 - - - +
192F CYS* 1.3 62.4 + - - +
193F VAL* 4.0 0.9 + - - +
200F VAL 4.8 0.3 - - - +
202F ASP 5.5 1.4 + - - -
205F ARG* 3.0 24.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with CYS 192 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
162F PHE* 3.7 20.9 - - - -
163F THR 3.8 11.7 - - - -
164F ALA* 3.9 13.7 - - - -
188F PHE 3.7 10.3 - - - -
189F ARG 2.8 15.5 + - - +
190F GLU* 3.6 6.8 - - - +
191F SER* 1.3 82.2 - - - +
193F VAL* 1.3 60.7 + - - +
194F PHE 4.1 0.7 + - - -
199F TYR* 3.5 26.0 - - + -
200F VAL 3.3 15.5 - - - +
201F LYS* 4.2 11.2 - - - -
205F ARG* 4.2 2.8 + - - -
----------------------------------------------------------
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