Contacts of the helix formed by residues 64 - 75 (chain C) in PDB entry 6W4E


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.
For CSU analysis of other PDB entry

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 TYR 64 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36C  ILE*     4.6    23.7    -      -       +      +
     59C  ALA*     3.9    28.3    -      -       +      +
     61C  GLN*     5.0    13.3    +      -       +      -
     62C  GLU*     2.7    29.0    +      -       -      +
     63C  GLU*     1.3    86.8    -      -       +      +
     65C  SER*     1.3    59.0    +      -       -      +
     66C  ALA      3.3     3.4    -      -       -      +
     67C  MET*     3.5    34.8    -      -       +      -
     68C  ARG*     3.0    32.3    +      -       -      +
     71C  TYR*     5.3     2.7    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 65 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62C  GLU*     6.0     0.2    +      -       -      -
     63C  GLU*     2.8    16.5    +      -       -      -
     64C  TYR*     1.3    72.2    -      -       -      +
     66C  ALA*     1.3    61.5    +      -       -      +
     68C  ARG*     3.7    13.6    +      -       -      +
     69C  ASP*     3.5     9.2    +      -       -      +
     99C  GLN*     3.4    24.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 66 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64C  TYR*     4.3     0.2    -      -       -      +
     65C  SER*     1.3    80.5    +      -       -      +
     67C  MET*     1.3    64.3    +      -       -      +
     69C  ASP*     3.2    21.3    +      -       -      +
     70C  GLN*     3.5     6.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 67 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36C  ILE*     3.6    33.2    -      -       +      +
     37C  GLU*     3.9    21.8    -      -       +      +
     59C  ALA*     4.9     1.6    -      -       -      -
     64C  TYR*     3.5    50.3    +      -       +      +
     66C  ALA*     1.3    80.2    -      -       -      +
     68C  ARG*     1.3    62.6    +      -       -      +
     70C  GLN*     3.2    28.1    +      -       -      +
     71C  TYR*     3.4    28.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 68 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9C  VAL*     5.2     4.3    -      -       +      -
     58C  THR*     5.8     1.8    -      -       -      -
     59C  ALA      5.0     5.6    +      -       -      -
     62C  GLU*     2.7    34.7    +      -       -      +
     64C  TYR*     3.0    23.8    +      -       -      +
     65C  SER*     3.8    14.2    -      -       -      +
     66C  ALA      3.2     0.2    -      -       -      -
     67C  MET*     1.3    78.6    -      -       -      +
     69C  ASP*     1.3    60.7    +      -       -      +
     70C  GLN      3.2     0.2    +      -       -      -
     71C  TYR*     3.4    34.0    -      -       +      +
     72C  MET*     3.0    49.2    +      -       +      +
     95C  HIS*     5.9     2.0    +      -       -      +
     96C  TYR*     3.5    42.2    +      -       -      +
     99C  GLN*     2.9    26.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 69 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65C  SER      3.5     7.4    +      -       -      +
     66C  ALA*     3.2    14.5    +      -       -      +
     68C  ARG*     1.3    77.9    -      -       -      +
     70C  GLN*     1.3    64.7    +      -       -      +
     72C  MET*     4.1     5.6    -      -       -      -
     73C  ARG*     3.4    31.2    +      -       -      +
     99C  GLN*     2.7    28.0    +      -       -      +
    102C  ARG*     3.9    12.3    +      -       -      -
    103C  VAL*     3.2    34.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 70 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37C  GLU*     5.3     6.1    +      -       -      -
     66C  ALA      3.5     4.9    +      -       -      +
     67C  MET*     3.2    22.8    +      -       -      +
     68C  ARG      3.1     0.8    -      -       -      -
     69C  ASP*     1.3    82.7    -      -       -      +
     71C  TYR*     1.3    68.5    +      -       +      +
     72C  MET      3.3     0.2    +      -       -      -
     73C  ARG*     3.4    18.8    +      -       -      +
     74C  THR*     3.0    16.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 71 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7C  VAL*     4.0    16.3    -      -       +      +
      9C  VAL*     5.1     1.1    -      -       +      -
     36C  ILE      5.4     0.4    -      -       -      -
     37C  GLU*     5.2     4.5    -      -       +      -
     56C  LEU*     3.8    28.9    -      -       +      -
     57C  ASP      5.9     0.2    -      -       -      -
     58C  THR*     3.5    39.8    -      -       +      +
     59C  ALA*     4.2     9.2    +      -       -      +
     64C  TYR*     4.9     2.3    +      -       -      +
     67C  MET*     3.4    42.7    -      -       +      -
     68C  ARG*     3.4    48.1    +      -       +      +
     70C  GLN*     1.3    83.1    -      -       +      +
     72C  MET*     1.3    61.6    +      -       +      +
     73C  ARG      3.2     0.2    -      -       -      -
     74C  THR*     3.5    10.3    -      -       -      +
     75C  GLY*     2.8    28.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 72 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9C  VAL*     5.3     4.9    -      -       +      -
     68C  ARG*     3.0    44.1    +      -       +      +
     69C  ASP      3.6     6.3    -      -       -      +
     70C  GLN      3.2     0.4    -      -       -      -
     71C  TYR*     1.3    80.3    -      -       +      +
     73C  ARG*     1.3    60.1    +      -       -      +
     75C  GLY      3.5     1.0    -      -       -      +
     78C  PHE*     3.3    35.8    -      -       +      -
     96C  TYR*     3.9     7.4    -      -       +      +
     99C  GLN*     3.5    43.7    -      -       +      +
    100C  ILE*     3.6    28.9    -      -       +      -
    103C  VAL*     3.7    22.4    -      -       +      -
    104C  LYS*     3.4    20.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 73 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69C  ASP*     3.4    29.0    +      -       -      +
     70C  GLN*     3.4    15.8    +      -       -      +
     71C  TYR      3.2     0.2    -      -       -      -
     72C  MET*     1.3    81.3    -      -       -      +
     74C  THR*     1.3    61.8    +      -       -      +
    103C  VAL*     4.1    19.1    +      -       +      +
    104C  LYS*     3.4    23.1    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 74 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5C  LYS*     3.8    30.7    -      -       +      +
     70C  GLN*     3.0    18.9    +      -       -      +
     71C  TYR*     3.3    10.8    +      -       -      -
     73C  ARG*     1.3    79.1    -      -       -      +
     75C  GLY*     1.3    65.0    +      -       -      +
     76C  GLU*     3.5     6.8    +      -       -      +
    104C  LYS*     4.8     0.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 75 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5C  LYS*     4.2     9.0    -      -       -      -
      7C  VAL*     3.4    27.6    -      -       -      +
     71C  TYR      2.8    15.3    +      -       -      -
     72C  MET      3.5     5.4    -      -       -      +
     74C  THR*     1.3    72.5    -      -       -      +
     76C  GLU*     1.3    57.0    +      -       -      -
     77C  GLY      3.8     0.4    -      -       -      -
     78C  PHE*     3.7     5.8    -      -       -      -
    104C  LYS*     2.7    32.1    +      -       -      -
----------------------------------------------------------
 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