Contacts of the strand formed by residues 154 - 160 (chain A) in PDB entry 1LWS
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 TYR 154 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
84A ARG* 2.5 50.8 + - + -
85A THR 3.0 21.5 - - - +
86A PRO* 4.1 1.8 - - + -
87A ARG* 3.9 6.9 - - - +
152A LYS* 3.2 38.7 + - + +
153A ALA* 1.3 88.8 - - + +
155A PHE* 1.3 71.9 + - - +
156A GLU* 3.3 31.1 + - + -
176A TYR* 3.9 15.7 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 155 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
84A ARG* 3.3 7.6 - - - +
85A THR* 2.5 40.7 + - + +
86A PRO 4.4 3.1 - - - -
87A ARG* 3.3 45.5 - - + -
107A PHE* 3.3 29.6 - - + -
108A GLU* 4.5 2.7 - - - -
109A MSE 4.6 30.5 - - + -
123A VAL* 4.2 21.1 - - + -
146A TYR* 4.1 1.1 - + - -
154A TYR* 1.3 78.3 - - - +
156A GLU* 1.3 61.6 + - - +
157A TRP* 3.7 17.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 156 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
30A LYS* 5.3 6.1 + - - -
82A VAL* 5.7 4.9 - - - +
83A VAL 3.9 6.3 - - - +
84A ARG* 2.7 37.4 + - - -
152A LYS* 3.3 27.0 + - + +
154A TYR* 3.3 26.4 + - + -
155A PHE* 1.3 71.8 - - - +
157A TRP* 1.3 61.6 + - - +
443A GLN* 5.9 0.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with TRP 157 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
82A VAL* 4.1 0.9 - - - +
83A VAL* 2.8 53.3 + - + +
84A ARG 3.8 2.2 - - - -
85A THR* 2.8 46.4 - - - -
109A MSE 5.1 13.7 - - + -
121A GLU* 4.4 5.4 + - + -
122A LEU* 3.9 21.7 - - + +
123A VAL* 3.3 35.7 - - + -
155A PHE* 3.7 15.9 - - + -
156A GLU* 1.3 73.5 - - - +
158A THR* 1.3 90.9 + - - +
159A ILE* 3.9 14.8 - - + +
167A LEU* 4.5 12.6 - - + -
171A VAL* 4.9 0.4 - - + -
175A THR* 3.6 12.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 158 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
80A GLU* 3.7 24.3 + - - -
81A LEU 3.1 14.4 - - - +
82A VAL* 4.2 18.6 - - + -
121A GLU 4.8 3.3 - - - +
157A TRP* 1.3 94.5 - - - +
159A ILE* 1.3 63.0 + - - +
443A GLN* 5.1 3.4 - - - +
453A HIS* 4.4 19.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 159 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
80A GLU* 4.0 2.7 - - - +
81A LEU* 2.6 40.5 + - + +
83A VAL* 3.7 33.2 - - + -
120A VAL* 6.4 0.7 - - + -
121A GLU 5.3 3.6 - - - +
122A LEU* 4.8 11.2 - - + -
157A TRP* 3.9 11.9 - - + +
158A THR* 1.3 79.1 - - - +
160A GLU* 1.3 71.1 + - - +
163A ASP* 3.6 17.3 - - + +
164A LEU* 3.6 37.7 - - + +
167A LEU* 3.9 16.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 160 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
78A THR* 2.4 55.3 - - - +
79A HIS 2.8 9.0 - - - +
80A GLU* 3.6 20.4 - - + +
81A LEU* 4.7 0.2 - - - -
118A ARG* 2.7 26.4 + - - -
159A ILE* 1.3 76.1 - - - +
161A ALA* 1.3 69.7 + - - +
162A ARG* 4.0 4.9 + - + -
163A ASP* 2.6 29.6 + - - +
164A LEU 3.4 3.1 + - - -
----------------------------------------------------------
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