Contacts of the helix formed by residues 534 - 539 (chain D) in PDB entry 4E2I
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 PRO 534 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
491D ILE* 3.5 28.3 - - + +
495D ASP* 4.4 4.0 - - + +
532D SER* 4.0 1.8 - - - +
533D VAL* 1.3 88.1 - - - +
535D LYS* 1.3 61.4 + - - +
536D THR* 3.2 6.7 - - - +
537D LEU* 3.0 15.8 + - + +
538D GLN* 2.9 24.8 + - - +
484E ASP 5.4 0.9 - - - +
486E PRO* 3.7 31.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 535 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
533D VAL 3.7 1.7 + - - -
534D PRO* 1.3 72.7 - - - +
536D THR* 1.3 73.0 + - + +
537D LEU 3.0 0.2 - - - -
538D GLN* 4.0 7.7 - - - +
539D ALA* 3.1 25.5 + - - +
428E ILE* 4.7 19.0 - - + +
483E ARG* 3.1 29.8 + - - +
484E ASP* 3.5 34.6 + - + +
485E LEU* 4.6 5.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 536 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
495D ASP* 2.9 25.6 + - - -
498D ARG* 2.9 25.3 + - - +
534D PRO* 4.0 0.5 - - - +
535D LYS* 1.3 82.3 - - + +
537D LEU* 1.3 57.2 + - - +
539D ALA* 4.2 2.4 + - - +
540D ARG* 3.0 30.2 + - - +
428E ILE* 4.3 22.0 - - + -
484E ASP 4.0 4.7 - - - +
485E LEU* 3.8 29.2 - - + -
486E PRO* 3.4 17.6 - - + +
529E ASN* 5.1 1.3 - - - +
531E TYR* 4.8 0.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 537 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
491D ILE* 3.8 31.0 - - + +
494D LEU* 3.6 42.8 - - + -
495D ASP* 4.2 9.6 - - + +
498D ARG* 5.3 0.9 - - - +
501D LEU* 3.8 20.4 - - + -
528D MET* 5.3 0.4 - - + -
533D VAL* 3.5 19.1 - - + -
534D PRO* 3.0 17.4 + - + +
535D LYS 3.0 0.4 - - - -
536D THR* 1.3 79.5 + - - +
538D GLN* 1.3 60.5 + - - +
539D ALA 3.0 1.6 - - - -
540D ARG* 2.9 23.9 + - - +
541D PHE* 3.1 28.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 538 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
423D LEU* 3.8 26.0 - - - +
425D LYS* 5.7 0.5 + - - -
533D VAL* 3.6 25.7 - - + +
534D PRO 2.9 15.1 + - - +
535D LYS* 4.0 7.2 - - - +
537D LEU* 1.3 77.0 - - - +
539D ALA* 1.3 56.3 + - - +
540D ARG 3.0 4.6 + - - -
541D PHE* 3.1 36.9 + - - +
543D LYS 5.7 0.6 - - - -
544D GLN* 3.9 25.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 539 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
418D LYS* 3.5 29.7 - - - +
535D LYS 3.1 17.7 + - - +
536D THR* 4.3 7.0 - - - +
537D LEU 3.0 0.8 - - - -
538D GLN* 1.3 75.9 - - - +
540D ARG* 1.3 59.6 + - - +
541D PHE 3.4 2.7 - - - +
428E ILE* 4.2 17.5 - - + -
429E ASP* 4.2 18.5 - - - +
----------------------------------------------------------
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