Contacts of the helix formed by residues 101 - 108 (chain E) in PDB entry 1ZWS
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 LEU 101 (chain E).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
99E GLY 3.4 4.4 + - - -
100E GLU* 1.3 69.9 - - - +
102E PHE* 1.3 75.3 + - + +
104E PHE* 3.2 4.4 + - + +
105E LEU* 2.9 57.3 + - + +
119E PHE* 3.8 31.9 - - + -
123E ILE* 4.6 8.7 - - + -
145E ILE* 2.9 43.8 + - + +
147E LEU* 3.7 27.5 - - + +
157E ILE* 3.8 12.8 - - + -
206E ILE* 6.2 0.7 - - + -
210E LEU* 5.6 3.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 102 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
100E GLU* 2.8 5.0 + - + +
101E LEU* 1.3 99.3 - - + +
103E ASP* 1.3 66.5 + - - +
105E LEU* 3.5 14.8 + - + +
106E ALA* 3.2 19.1 + - - +
142E PRO* 3.3 52.9 - - + +
145E ILE* 4.5 2.4 + - + -
206E ILE* 4.3 22.9 - - + -
209E ILE* 3.5 35.0 - - + -
210E LEU* 4.5 10.3 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 103 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
99E GLY* 6.1 0.2 - - - -
100E GLU* 2.6 48.0 + - + +
102E PHE* 1.3 76.2 - - - +
104E PHE* 1.3 63.6 + - - +
106E ALA* 2.9 23.6 - - - +
107E GLN* 3.5 8.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 104 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
98E GLY 5.0 1.1 - - - +
100E GLU 3.1 5.9 + - - +
101E LEU* 3.5 6.1 - - + +
103E ASP* 1.3 75.8 - - - +
105E LEU* 1.3 92.7 + - + +
107E GLN* 2.8 31.3 + - + +
108E LYS* 3.3 50.4 + - + +
119E PHE* 4.5 4.5 - + - -
147E LEU* 3.4 31.0 - - + -
150E LYS* 3.8 34.7 - - + +
152E ILE 4.7 1.8 - - - -
153E PRO 4.5 1.8 - - - -
155E PRO* 3.7 32.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 105 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
101E LEU* 2.9 46.8 + - + +
102E PHE* 3.7 15.5 - - + +
104E PHE* 1.3 85.6 - - + +
106E ALA* 1.3 63.4 + - - +
108E LYS* 2.8 31.4 + - + +
111E LEU* 3.9 30.5 - - + -
119E PHE* 3.9 21.5 - - + -
210E LEU* 4.6 21.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 106 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
102E PHE 3.2 9.2 + - - +
103E ASP* 2.9 20.5 + - - +
104E PHE 2.9 0.4 + - - -
105E LEU* 1.3 80.2 - - - +
107E GLN* 1.3 63.0 + - + +
108E LYS 3.0 8.8 + - - +
109E GLU* 4.7 1.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 107 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
103E ASP 4.0 8.7 - - - +
104E PHE* 2.8 21.5 + - - +
106E ALA* 1.3 72.9 - - + +
108E LYS* 1.3 60.2 + - - +
109E GLU* 3.1 13.7 + - - +
150E LYS* 3.6 24.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 108 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
104E PHE* 3.3 43.3 + - + +
105E LEU* 2.8 36.7 + - + +
106E ALA 3.0 5.8 - - - +
107E GLN* 1.3 75.1 - - - +
109E GLU* 1.3 60.6 + - - +
110E SER 3.3 15.7 + - - +
111E LEU* 4.7 1.8 - - + -
115E GLU* 3.6 33.2 + - - +
119E PHE* 4.6 6.3 - - - -
153E PRO* 3.9 15.2 + - - +
----------------------------------------------------------
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