Contacts of the strand formed by residues 232 - 235 (chain A) in PDB entry 6CDF
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 CYS 232 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
136A ILE* 4.5 8.3 - - - -
139A LEU* 5.3 0.9 - - - -
140A TYR* 3.7 27.4 - - + +
176A THR 3.2 4.9 + - - +
177A LEU* 3.4 25.0 - - + +
178A GLY 2.9 25.8 + - - -
198A PHE* 5.0 0.4 - - + -
230A SER* 3.9 0.8 - - - -
231A ASP* 1.3 80.2 - - - +
233A VAL* 1.3 65.7 + - - +
260A PHE* 3.5 24.7 - - + -
262A VAL* 4.1 21.3 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 233 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
178A GLY 3.5 6.3 - - - +
180A ILE* 3.7 29.6 - - + -
226A LEU* 4.2 3.4 - - + -
227A LEU* 3.9 26.0 - - + +
230A SER* 3.8 23.3 - - - +
232A CYS* 1.3 76.8 - - - +
234A THR* 1.3 59.4 + - - +
235A LEU* 4.8 1.6 - - + -
247A ILE* 5.1 1.1 - - + -
255A MET* 4.0 14.4 - - + -
259A ALA* 5.6 0.9 - - + -
260A PHE 2.9 10.8 + - - +
261A LEU* 3.3 21.2 - - + +
262A VAL* 2.8 33.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 234 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
132A THR* 3.4 13.5 - - - +
136A ILE* 4.7 1.6 - - + -
177A LEU* 3.9 20.2 - - + -
178A GLY 3.0 11.7 + - - +
179A ILE* 3.8 14.8 - - + -
180A ILE* 3.1 22.3 + - - +
189A VAL* 4.6 2.7 - - + -
233A VAL* 1.3 76.7 - - - +
235A LEU* 1.3 64.7 + - - +
236A HIS* 2.8 36.9 + - + +
262A VAL* 3.3 18.9 - - - +
264A THR* 5.3 0.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 235 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
180A ILE* 3.5 41.1 - - + -
233A VAL* 4.8 1.1 - - + -
234A THR* 1.3 71.1 + - - +
236A HIS* 1.3 76.6 + - - +
237A CYS* 3.8 4.5 - - - +
246A LEU* 4.8 6.3 - - + -
247A ILE* 4.3 16.6 - - + -
261A LEU* 4.5 8.3 - - + -
262A VAL 3.0 11.4 + - - +
263A ASN* 3.5 37.0 - - + +
264A THR 4.1 3.6 + - - -
265A ALA* 3.5 20.8 + - + +
269A LEU* 4.3 13.0 - - + -
270A VAL* 3.6 23.1 - - + -
----------------------------------------------------------
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