Contacts of the helix formed by residues 480 - 485 (chain C) in PDB entry 1DQ8
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 LYS 480 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
476C ILE* 5.4 4.5 - - + -
477C PRO* 3.1 25.7 + - + +
478C ALA 3.1 1.6 - - - -
479C TYR* 1.3 94.7 - - + +
481C LEU* 1.3 64.8 + - - +
482C GLU 3.4 2.5 - - - -
483C THR* 3.3 40.7 + - - +
484C LEU* 3.8 16.4 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 481 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
467C ILE* 5.1 4.3 - - + -
471C VAL* 4.0 27.1 - - + -
476C ILE* 5.1 7.2 - - + -
477C PRO 4.2 1.7 + - - +
478C ALA* 3.2 23.0 + - - +
479C TYR 3.5 1.2 - - - -
480C LYS* 1.3 77.1 - - - +
482C GLU* 1.3 64.1 + - - +
484C LEU* 3.1 16.8 + - + +
485C ILE* 3.1 35.5 + - + +
491C GLY 3.6 22.0 - - - +
494C ILE* 3.8 16.8 - - + -
495C ARG* 3.7 30.7 - - + +
498C LEU* 4.2 7.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 482 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
479C TYR 4.5 5.2 - - - +
480C LYS 3.4 1.0 + - - -
481C LEU* 1.3 75.0 + - - +
483C THR* 1.3 62.1 - - - +
485C ILE* 3.3 20.9 - - - +
487C THR 5.7 1.3 - - - -
488C HIS* 3.9 22.1 - - + +
491C GLY* 3.5 19.4 - - - -
492C VAL 3.6 0.3 + - - -
495C ARG* 2.6 42.1 + - - -
523C MET* 3.4 37.3 - - + +
529C ASN 5.9 0.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 483 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
480C LYS* 3.3 39.4 + - - +
481C LEU 3.2 0.8 - - - -
482C GLU* 1.3 80.0 - - - +
484C LEU* 1.3 67.8 + - + +
485C ILE 4.8 1.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 484 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
476C ILE* 3.4 37.7 - - + -
480C LYS* 4.0 17.9 - - + +
481C LEU* 3.1 10.3 + - + +
483C THR* 1.3 90.0 - - + +
485C ILE* 1.3 62.8 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 485 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
467C ILE* 5.0 8.1 - - + -
481C LEU* 3.1 29.8 + - + +
482C GLU* 3.3 15.8 + - - +
483C THR 4.8 1.2 - - - +
484C LEU* 1.3 85.0 - - + +
486C GLU* 1.3 67.7 + - + +
487C THR 3.4 24.3 + - - +
490C ARG* 3.8 26.5 - - + +
491C GLY* 3.5 25.8 - - - +
494C ILE* 3.6 27.4 - - + -
----------------------------------------------------------
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