Contacts of the strand formed by residues 231 - 234 (chain B) in PDB entry 2F4N
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 231 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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217B CYS* 4.2 3.4 - - - -
218B LYS 3.5 13.5 - - - +
220B VAL* 3.9 9.4 - - + -
222B SER 3.6 24.0 - - - +
223B TYR* 4.0 21.3 - - - +
225B GLU 3.7 5.2 - - - +
226B GLU* 3.4 41.1 - - + +
229B ASN 3.8 1.6 - - - +
230B PHE* 1.3 79.7 - - - +
232B CYS* 1.3 57.8 + - - +
233B LEU* 4.5 7.9 - - + -
242B ILE* 3.4 3.8 - - - +
243B SER* 2.6 64.3 + - - +
244B LYS* 4.6 1.6 - - - +
245B PHE 5.3 3.4 - - - +
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Residues in contact with CYS 232 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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201B ILE* 4.0 17.3 - - - -
203B ILE* 4.4 9.6 - - + -
217B CYS* 3.9 19.7 - - + +
218B LYS 3.2 2.4 + - - -
219B PHE* 3.1 23.0 - - - -
220B VAL 3.1 20.8 + - - -
231B ILE* 1.3 76.0 - - - +
233B LEU* 1.3 60.0 + - - +
240B LEU* 3.7 20.9 - - + -
241B GLU 2.9 15.7 - - - +
242B ILE* 4.3 4.5 - - + -
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Residues in contact with LEU 233 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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219B PHE* 3.9 5.2 - - - -
220B VAL* 3.4 23.8 - - + +
221B LYS 3.8 22.7 - - - +
222B SER* 4.2 11.2 - - - -
223B TYR* 4.0 40.4 - - + +
231B ILE* 4.5 9.2 - - + -
232B CYS* 1.3 76.9 - - - +
234B ILE* 1.3 75.0 + - - +
235B ASN* 3.7 2.6 + - - +
240B LEU* 3.4 2.8 - - - -
241B GLU* 2.7 47.9 + - + +
243B SER* 4.7 3.4 - - - -
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Residues in contact with ILE 234 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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190B LYS* 3.7 44.2 - - + +
193B VAL* 4.2 17.5 - - + -
197B TYR* 5.9 1.8 - - - +
219B PHE* 3.4 33.9 - - + -
220B VAL 4.9 0.4 + - - -
221B LYS 5.5 1.0 - - - +
233B LEU* 1.3 85.6 - - - +
235B ASN* 1.3 72.6 + - - +
238B GLY* 3.8 15.3 - - - -
239B PHE 3.3 11.0 - - - +
240B LEU* 4.4 10.5 - - + -
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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
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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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