Contacts of the strand formed by residues 249 - 253 (chain B) in PDB entry 4KAL
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 ALA 249 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
242B VAL 3.3 13.5 - - - +
243B THR* 4.1 4.0 - - + -
244B MSE 3.5 12.5 - - - +
248B GLY* 1.3 75.7 - - - +
250B VAL* 1.3 61.7 + - - +
251B ILE* 4.8 5.4 - - + -
258B TYR 4.5 0.2 - - - -
259B TYR* 3.5 3.5 - - - +
260B VAL* 2.9 35.0 + - + +
278B PHE* 3.7 34.5 - - + -
300B CYS* 4.2 6.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 250 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
230B LEU* 3.9 32.8 - - + -
240B ALA 3.8 1.0 - - - +
241B ALA* 3.7 0.5 - - - -
242B VAL* 2.8 43.4 + - + +
244B MSE 4.4 11.0 - - + -
249B ALA* 1.3 75.3 - - - +
251B ILE* 1.3 75.1 + - - +
252B LEU* 3.8 8.4 - - + +
257B ARG* 4.4 8.7 - - + -
258B TYR 3.4 11.2 - - - +
259B TYR* 3.7 39.0 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 251 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
239B ILE* 4.1 9.6 - - + -
240B ALA 3.4 8.1 - - - +
241B ALA* 3.8 12.8 - - + -
249B ALA* 4.8 1.6 - - + -
250B VAL* 1.3 83.1 - - - +
252B LEU* 1.3 64.3 + - - +
257B ARG* 3.3 4.9 - - - -
258B TYR* 2.8 57.9 + - + +
260B VAL* 5.2 3.4 - - + -
278B PHE* 4.1 13.5 - - + -
282B PHE* 3.8 38.8 - - + -
292B LEU* 3.8 37.9 - - + +
296B GLY* 4.2 9.6 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 252 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
230B LEU* 3.6 38.1 - - + +
233B ILE* 4.4 2.5 - - + -
234B ALA* 3.9 20.2 - - + -
237B CYS 5.6 0.2 - - - +
238B LYS 4.0 0.2 - - - +
239B ILE* 3.3 8.7 - - - +
240B ALA* 2.7 52.3 + - + +
242B VAL* 3.8 24.9 - - + -
250B VAL* 3.8 11.9 - - + +
251B ILE* 1.3 77.8 - - - +
253B LYS* 1.3 61.5 + - - +
254B GLY 4.3 0.4 - - - +
256B GLU 3.4 4.7 - - - +
257B ARG* 3.7 34.5 - - + +
292B LEU* 5.4 0.2 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 253 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
238B LYS* 3.5 19.7 - - - +
239B ILE* 4.0 15.7 - - + +
251B ILE 4.3 0.2 - - - -
252B LEU* 1.3 73.9 - - - +
254B GLY* 1.3 60.8 + - - +
255B ARG 3.0 0.7 + - - -
256B GLU* 2.8 58.8 + - + +
258B TYR* 5.4 0.4 - - - -
292B LEU* 4.0 29.5 - - + +
----------------------------------------------------------
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