Contacts of the strand formed by residues 238 - 241 (chain A) in PDB entry 3I5Y
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 ILE 238 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163A LEU* 5.2 0.7 - - + -
166A ILE* 3.9 18.4 - - + -
167A PHE* 4.1 26.7 - - + -
170A LEU* 3.5 27.4 - - + -
183A ALA* 3.5 11.0 - - + +
185A ILE* 4.3 20.0 - - + -
200A VAL* 4.7 10.8 - - + -
213A TYR 4.8 1.8 - - - +
214A ALA 3.1 10.2 + - - +
215A CYS* 3.2 18.4 - - + +
216A VAL 3.1 23.6 + - - -
236A PRO* 3.6 4.3 - - - +
237A ASN* 1.3 85.6 - - - +
239A VAL* 1.3 70.8 + - - +
240A ILE* 4.4 1.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 239 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
181A VAL* 3.7 36.3 - - + +
183A ALA 2.9 7.5 + - - +
184A VAL* 3.5 9.4 - - + -
185A ILE* 2.9 26.9 + - - +
216A VAL 3.3 7.2 - - - +
218A LEU* 4.0 20.2 - - + -
231A MET* 3.9 26.2 - - + -
236A PRO* 4.4 1.6 - - + -
238A ILE* 1.3 77.5 - - - +
240A ILE* 1.3 72.9 + - - +
241A ALA* 4.3 8.1 - - + -
246A LEU* 4.7 1.8 - - + -
258A PHE* 4.2 11.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 240 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
185A ILE* 3.3 29.4 - - + +
187A ALA* 5.7 1.1 - - + -
193A ALA* 3.5 31.6 - - + +
196A ILE* 3.2 36.3 - - + +
197A GLU* 3.3 21.1 - - - +
200A VAL* 4.4 4.3 - - + -
215A CYS* 3.8 20.6 - - - -
216A VAL 3.0 7.3 + - - +
217A SER* 3.1 10.3 - - - -
218A LEU 2.8 24.4 + - - -
219A VAL* 4.5 0.5 - - - +
238A ILE* 4.4 1.8 - - + -
239A VAL* 1.3 77.0 - - - +
241A ALA* 1.3 64.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 241 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
185A ILE 2.8 11.6 + - - +
186A VAL* 3.3 5.5 - - - -
187A ALA* 2.9 26.7 + - - +
193A ALA* 4.2 6.4 - - - +
218A LEU* 3.2 17.3 - - + +
219A VAL* 4.4 1.3 - - - -
239A VAL* 4.3 10.1 - - + -
240A ILE* 1.3 78.9 - - - +
242A THR* 1.3 62.8 + - - +
246A LEU* 3.8 35.9 - - + -
----------------------------------------------------------
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