Contacts of the helix formed by residues 453 - 462 (chain A) in PDB entry 2QUH
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 THR 453 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
220A LYS* 5.5 0.2 - - - -
450A LYS 5.9 0.4 - - - +
451A GLU 3.2 13.2 + - - +
452A VAL* 1.3 73.8 - - - +
454A ASP* 1.3 65.2 + - - +
455A GLU* 3.1 21.0 - - + +
456A ILE* 2.9 40.7 + - + +
457A VAL* 3.0 16.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 454 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
216A VAL* 5.9 2.3 - - - +
220A LYS* 4.2 19.8 + - - -
452A VAL 4.1 0.2 + - - -
453A THR* 1.3 72.3 - - - +
455A GLU* 1.3 68.2 + - - +
457A VAL* 3.4 8.3 + - - +
458A LYS* 2.9 28.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 455 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
453A THR* 3.1 20.0 + - + +
454A ASP* 1.3 87.3 + - - +
456A ILE* 1.3 60.8 + - + +
458A LYS* 3.7 8.2 - - - +
459A GLU* 2.8 30.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 456 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
223A ILE* 4.4 12.1 - - + -
229A ILE* 4.2 7.4 - - + +
451A GLU 3.6 22.4 - - - +
452A VAL* 4.3 5.8 - - + -
453A THR* 2.9 37.8 + - + +
455A GLU* 1.3 75.8 - - + +
457A VAL* 1.3 65.3 - - - +
459A GLU* 3.2 6.8 + - - +
460A PHE* 2.9 47.1 + - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 457 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
216A VAL* 3.9 22.4 - - + +
219A ALA* 4.3 9.0 - - + -
220A LYS* 3.8 18.6 - - + -
223A ILE* 3.9 10.8 - - + -
452A VAL* 3.3 23.3 - - + -
453A THR 3.0 17.2 + - - +
454A ASP* 3.6 7.9 - - - +
456A ILE* 1.3 77.2 - - - +
458A LYS* 1.3 62.0 + - - +
460A PHE* 3.3 2.3 + - - +
461A MET* 3.0 50.1 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 458 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
454A ASP 2.9 18.3 + - - +
455A GLU* 3.7 9.2 - - - +
457A VAL* 1.3 73.0 - - - +
459A GLU* 1.3 66.7 + - - +
461A MET* 3.0 10.2 + - - -
462A THR* 2.8 29.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 459 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
229A ILE* 3.5 33.0 - - + +
230A ASN* 5.2 2.6 - - - +
455A GLU 2.8 22.8 + - - +
456A ILE* 3.2 4.9 + - - +
458A LYS* 1.3 72.0 - - - +
460A PHE* 1.3 60.6 + - - +
462A THR* 3.2 13.6 + - - -
464A ARG* 2.9 42.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 460 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
223A ILE* 3.5 42.2 - - + -
227A PHE* 3.5 23.1 - - + -
228A ASP 4.2 0.4 - - - -
229A ILE* 3.4 48.7 - - + -
232A THR* 3.3 33.9 - - + -
233A PHE* 3.6 3.5 - - - -
234A ILE* 3.1 42.9 + - + +
456A ILE* 2.9 26.7 + - + +
457A VAL 3.5 8.3 - - - +
459A GLU* 1.3 77.3 - - - +
461A MET* 1.3 60.5 + - + +
462A THR 3.5 0.5 + - - -
464A ARG* 3.2 14.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 461 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
195A MET* 5.5 2.2 - - - -
212A TYR* 4.7 8.3 - - - +
215A ALA* 4.9 2.5 - - - +
216A VAL* 3.6 33.4 - - + -
219A ALA* 4.3 15.5 - - + -
233A PHE* 3.9 5.4 - - - -
234A ILE* 2.9 30.9 - - + +
235A PHE* 5.0 4.0 - - - +
236A SER* 5.1 15.3 - - - +
239A ASP* 6.1 1.0 - - - +
457A VAL* 3.0 44.2 + - + +
458A LYS* 3.0 8.0 + - - +
460A PHE* 1.3 76.5 - - + +
462A THR* 1.3 57.2 + - - +
463A PRO* 3.4 10.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 462 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
233A PHE* 3.8 4.1 - - - -
458A LYS* 2.8 24.2 + - - +
459A GLU* 3.2 12.9 + - - -
460A PHE 3.3 0.2 - - - -
461A MET* 1.3 78.1 - - - +
463A PRO* 1.3 81.9 - - + +
464A ARG* 2.9 32.5 + - + -
----------------------------------------------------------
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