Contacts of the strand formed by residues 189 - 195 (chain B) in PDB entry 1KAF
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 ASN 189 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
150B ARG* 5.3 2.4 - - - +
163B PHE* 4.0 23.3 - - + -
164B GLY 3.6 4.2 + - - -
165B TYR* 3.4 23.6 - - - +
183B LYS 3.8 0.5 - - - +
184B ILE* 3.5 2.6 - - - +
185B ALA* 2.8 30.6 + - + -
187B ASN* 2.8 29.4 - - - +
188B GLY* 1.3 79.5 - - - +
190B VAL* 1.3 58.9 + - - +
191B TYR* 3.9 22.6 + - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 190 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
162B ILE 3.6 0.6 - - - +
163B PHE* 3.5 6.4 - - - -
164B GLY* 2.8 58.6 + - - +
165B TYR* 3.8 1.8 - - - +
167B MET* 3.5 26.2 - - + +
172B ILE* 4.4 8.1 - - + -
182B CYS* 3.8 24.2 - - - -
183B LYS 3.2 9.9 - - - +
184B ILE* 3.8 11.7 - - + -
188B GLY 4.4 3.4 - - - +
189B ASN* 1.3 77.3 - - - +
191B TYR* 1.3 70.7 + - - +
192B LEU* 4.2 8.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 191 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
161B ARG* 3.6 41.7 - - + +
162B ILE 3.3 5.2 - - - +
163B PHE* 3.4 40.8 - + + -
181B SER 3.8 0.7 - - - +
182B CYS* 3.6 2.8 - - - -
183B LYS* 2.9 49.6 + - + +
185B ALA* 5.5 5.2 - - + -
189B ASN* 3.9 21.7 + - + +
190B VAL* 1.3 78.5 - - - +
192B LEU* 1.3 61.3 + - - +
193B ASP* 4.1 3.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 192 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
161B ARG* 3.1 7.8 - - - +
162B ILE* 2.8 50.4 + - + +
167B MET* 3.9 19.7 - - + -
172B ILE* 4.2 11.4 - - + -
175B PHE* 3.6 39.9 - - + -
176B THR* 4.8 2.5 - - + -
180B MET* 3.5 19.2 - - + +
181B SER 3.3 5.6 - - - +
182B CYS* 3.6 37.0 - - + -
190B VAL* 4.4 7.0 - - + -
191B TYR* 1.3 73.7 - - - +
193B ASP* 1.3 60.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 193 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
157B ASN* 5.8 0.2 + - - -
159B ASN* 4.2 15.8 + - + +
160B MET 3.5 3.2 - - - +
161B ARG* 2.6 60.7 + - - +
179B GLY 4.3 0.5 - - - +
180B MET* 3.1 7.3 - - - -
181B SER* 2.7 52.2 + - - +
183B LYS* 5.5 5.5 - - - +
191B TYR* 4.4 5.4 - - - +
192B LEU* 1.3 76.1 - - - +
194B ILE* 1.3 60.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 194 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
159B ASN* 3.3 7.5 - - - -
160B MET* 2.8 49.0 + - + +
178B ILE* 3.8 21.8 - - + +
179B GLY* 4.0 19.1 - - - +
180B MET* 4.0 22.0 - - + +
193B ASP* 1.3 78.6 - - - +
195B LYS* 1.3 67.6 + - - +
200B ASN* 3.5 35.9 - - + +
204B VAL* 4.1 14.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 195 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
158B GLY* 4.1 8.9 + - - +
159B ASN* 3.7 13.3 + - - +
194B ILE* 1.3 78.8 - - - +
196B ARG* 1.3 74.2 + - - +
197B SER* 3.5 1.2 + - - -
200B ASN* 2.9 33.6 + - - +
166C LYS* 4.8 13.9 - - - +
----------------------------------------------------------
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