Contacts of the strand formed by residues 162 - 165 (chain B) in PDB entry 1XBT
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 162 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27B PRO* 3.6 5.8 - - - +
130B ARG* 3.5 31.9 - - + -
148B LYS* 4.7 0.4 - - - -
161B ALA* 1.3 101.2 - - + +
163B THR* 1.3 64.5 + - - +
183B SER* 3.3 6.2 - - - -
184B VAL* 2.8 45.3 + - + +
185B CYS* 3.9 4.0 - - - -
186B ARG* 3.3 35.5 + - + -
189B TYR* 4.3 5.4 - - + -
141D PRO 3.3 27.8 - - - -
142D LEU 2.6 20.5 + - - -
143D ALA 3.6 3.8 - - - -
144D GLU* 2.6 33.6 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 163 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27B PRO* 3.4 6.8 - - - +
28B MET* 3.0 59.2 + - + +
124B LEU* 5.1 1.7 - - - +
126B GLY 5.3 2.3 + - - -
127B THR 4.2 5.9 + - - +
128B PHE* 3.5 24.6 - - - +
130B ARG* 5.4 0.5 - - - +
162B TYR* 1.3 73.6 + - - +
164B LYS* 1.3 62.0 + - - +
181B TYR* 3.8 16.8 - - + -
182B HIS 3.5 7.4 - - - +
184B VAL* 4.4 2.0 - - - -
189B TYR* 3.8 5.9 - - - -
2195B TTP 3.7 19.9 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 164 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
155B GLU* 2.9 32.8 + - - +
163B THR* 1.3 71.9 - - - +
165B ARG* 1.3 72.8 + - - +
166B LEU* 3.7 10.1 + - + +
181B TYR* 3.2 8.9 - - - +
182B HIS* 2.8 38.4 + - + +
184B VAL* 3.8 17.6 - - + +
188B CYS 2.9 24.0 + - - +
189B TYR* 3.9 30.0 + - + +
191B LYS* 4.5 11.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 165 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128B PHE* 3.3 51.0 + - + +
164B LYS* 1.3 84.3 - - - +
166B LEU* 1.3 64.4 + - - +
167B GLY 3.9 18.3 - - - +
169B GLU* 2.9 47.1 + - - +
171B GLU 2.7 22.0 + - - -
172B VAL 2.9 27.7 + - - -
174B VAL* 3.5 15.3 - - - +
180B LYS* 3.7 10.3 - - + +
181B TYR* 3.0 30.5 + - + -
2195B TTP 3.7 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