Contacts of the helix formed by residues 288 - 292 (chain B) in PDB entry 5X61
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 LEU 288 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
244B MET 3.6 23.1 - - - +
245B TRP* 4.0 27.4 - - + +
246B ASN 3.1 30.5 - - - +
248B ASN* 3.3 10.4 + - + +
284B GLY* 5.2 2.7 - - - -
285B THR* 3.6 30.7 - - + +
286B ALA 3.4 2.2 - - - +
287B THR* 1.3 78.2 - - - +
289B ASP* 1.3 58.7 + - - +
290B VAL* 3.1 7.0 - - + +
291B TYR* 2.9 56.0 + - + +
292B ASP* 3.7 3.6 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 289 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
244B MET 5.5 0.4 + - - -
248B ASN* 3.2 26.0 + - - +
287B THR 4.2 1.6 - - - -
288B LEU* 1.3 71.9 - - - +
290B VAL* 1.3 62.8 + - + +
291B TYR 3.3 0.2 - - - -
292B ASP* 3.4 22.2 + - - +
610B GLU* 4.4 10.3 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 290 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
244B MET* 3.6 44.0 - - + +
245B TRP* 4.6 11.9 - - + -
288B LEU* 4.5 5.8 - - + -
289B ASP* 1.3 80.0 - - + +
291B TYR* 1.3 64.2 + - + +
292B ASP 3.2 3.9 + - - -
604B ILE* 3.8 22.7 - - + +
605B ASN* 3.8 31.5 - - - +
608B PHE* 3.5 18.4 - - - +
610B GLU* 4.0 17.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 291 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
245B TRP* 3.7 21.5 - + - -
275B TRP* 3.4 43.5 - + + +
277B PHE* 3.6 18.6 - - + +
278B GLY 4.1 12.5 + - - -
285B THR 3.2 28.0 - - - -
286B ALA* 4.1 14.8 - - - +
288B LEU* 2.9 35.4 + - + +
290B VAL* 1.3 75.2 - - + +
292B ASP* 1.3 66.8 + - - +
293B HIS* 3.0 21.2 + - + -
359B GLU* 5.6 2.1 + - - -
604B ILE* 3.6 26.2 - - + +
608B PHE* 3.4 16.1 - + + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 292 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
183B PRO* 4.6 9.2 - - - +
288B LEU 3.7 4.1 + - - -
289B ASP* 3.4 20.5 + - - +
290B VAL 3.2 3.2 + - - +
291B TYR* 1.3 74.5 - - - +
293B HIS* 1.3 67.0 + - - +
294B ARG* 3.2 50.6 + - - +
295B ALA* 4.1 4.3 + - + +
608B PHE* 3.7 22.3 - - - +
----------------------------------------------------------
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