Contacts of the helix formed by residues 118 - 124 (chain D) in PDB entry 5H7R
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 CYS 118 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
95D CYS* 3.8 6.3 - - - -
97D PHE* 4.1 3.6 - - - -
101D CYS* 4.0 2.0 - - - -
113D HIS* 3.2 28.6 + - + +
114D PHE* 4.0 11.9 + - - +
116D THR 4.1 0.2 - - - -
117D SER* 1.3 78.0 - - - +
119D LYS* 1.3 57.1 + - - +
120D GLY* 3.4 19.3 - - - -
121D ALA* 3.4 13.4 - - + +
122D SER* 2.7 32.9 + - - -
203D ZN 2.4 30.1 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 119 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
100D HIS* 4.0 25.5 - - + +
101D CYS* 5.0 3.0 - - + +
117D SER 5.6 2.0 - - - +
118D CYS* 1.3 71.9 - - - +
120D GLY* 1.3 59.8 + - - +
122D SER* 3.6 7.9 + - - -
123D HIS* 3.1 27.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 120 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
97D PHE* 3.6 24.9 - - - -
100D HIS* 3.4 26.0 - - - +
101D CYS* 4.7 1.0 - - - +
118D CYS* 3.3 5.0 - - - -
119D LYS* 1.3 75.0 - - - +
121D ALA* 1.3 53.9 + - - +
123D HIS* 3.1 3.1 + - - +
124D TYR 2.7 39.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 121 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
97D PHE* 3.7 13.9 - - + -
114D PHE* 3.4 52.7 - - + +
118D CYS* 3.4 10.4 - - + +
120D GLY* 1.3 72.5 - - - +
122D SER* 1.3 63.0 + - - +
124D TYR* 3.3 30.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 122 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
114D PHE 5.1 1.6 + - - -
118D CYS 2.7 21.8 + - - -
119D LYS* 3.6 10.5 - - - -
120D GLY 3.3 0.2 - - - -
121D ALA* 1.3 76.5 - - - +
123D HIS* 1.3 61.3 + - - +
124D TYR* 3.3 15.6 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 123 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
100D HIS* 3.5 36.3 + + + +
119D LYS 3.1 17.5 + - - +
120D GLY 3.6 3.4 - - - +
122D SER* 1.3 75.8 - - - +
124D TYR* 1.3 71.0 - - - +
125D GLY* 3.8 16.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 124 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3D LEU* 4.7 11.9 - - + -
97D PHE* 3.3 19.9 - + - -
100D HIS* 5.2 0.5 - - - -
120D GLY* 2.7 22.5 + - - +
121D ALA* 3.3 19.7 + - - +
122D SER* 3.3 15.7 - - - -
123D HIS* 1.3 76.1 - - - +
125D GLY* 1.3 69.2 + - - +
----------------------------------------------------------
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