Contacts of the helix formed by residues 769 - 782 (chain F) in PDB entry 5A31


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 LYS 769 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    767F  ASP*     4.2     0.8    -      -       -      +
    768F  PRO*     1.3    76.2    -      -       +      +
    770F  GLY*     1.3    64.5    +      -       -      +
    771F  ALA      3.1     1.8    -      -       -      -
    772F  ASN*     2.9    20.5    +      -       -      +
    773F  ASN*     3.4     8.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 770 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737F  SER*     5.0     8.7    -      -       -      -
    738F  LEU*     4.7     3.9    -      -       -      +
    767F  ASP*     3.6    18.2    -      -       -      +
    769F  LYS*     1.3    78.2    -      -       -      +
    771F  ALA*     1.3    51.1    +      -       -      +
    773F  ASN*     3.1    12.5    +      -       -      +
    774F  GLN*     2.6    38.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 771 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737F  SER*     5.2     1.0    +      -       -      -
    764F  MET*     4.7    24.5    -      -       +      -
    767F  ASP*     3.7    16.7    +      -       -      +
    768F  PRO      3.6    17.3    -      -       -      +
    770F  GLY*     1.3    74.3    -      -       -      +
    772F  ASN*     1.3    59.8    +      -       -      +
    774F  GLN*     3.6     7.5    +      -       -      +
    775F  ILE*     3.4    20.4    +      -       -      +
    362R  HIS      5.5     6.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 772 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    768F  PRO      4.7     1.3    +      -       -      +
    769F  LYS*     2.9    12.8    +      -       -      +
    771F  ALA*     1.3    77.6    -      -       -      +
    773F  ASN*     1.3    61.2    +      -       -      +
    775F  ILE*     3.6    18.0    +      -       -      +
    776F  LYS*     3.6     7.6    +      -       -      +
    362R  HIS*     5.5     8.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 773 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    738F  LEU*     5.0     7.8    -      -       +      +
    769F  LYS      3.4     4.0    +      -       -      +
    770F  GLY*     3.1    17.7    +      -       -      +
    772F  ASN*     1.3    77.4    -      -       -      +
    774F  GLN*     1.3    63.8    +      -       -      +
    776F  LYS*     3.3    10.8    +      -       -      +
    777F  GLU*     3.1    21.4    +      -       -      +
    487R  ASN*     6.3     0.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 774 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737F  SER*     5.3     2.7    -      -       -      +
    738F  LEU*     3.8    25.5    -      -       +      +
    741F  PHE*     4.6    30.0    -      -       +      -
    763F  ALA*     6.5     0.2    -      -       +      -
    770F  GLY      2.6    22.0    +      -       -      +
    771F  ALA*     3.6    10.3    -      -       -      +
    773F  ASN*     1.3    72.0    -      -       -      +
    775F  ILE*     1.3    61.8    +      -       -      +
    777F  GLU*     3.3     3.9    +      -       -      +
    778F  ALA*     3.2    22.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 775 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    741F  PHE*     6.0     1.1    -      -       -      -
    771F  ALA      3.4    10.0    +      -       -      +
    772F  ASN*     3.6    11.9    -      -       -      +
    773F  ASN      3.2     0.6    -      -       -      -
    774F  GLN*     1.3    76.8    -      -       -      +
    776F  LYS*     1.3    64.2    +      -       -      +
    777F  GLU      3.3     0.3    +      -       -      -
    778F  ALA*     3.6     7.9    +      -       -      +
    779F  ILE*     3.5    19.1    +      -       -      +
    320R  ALA*     6.4     2.2    -      -       +      -
    364R  ARG*     5.9     7.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 776 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    772F  ASN      3.6     6.3    +      -       -      +
    773F  ASN*     3.3    15.4    +      -       -      +
    775F  ILE*     1.3    79.2    -      -       -      +
    777F  GLU*     1.3    62.6    +      -       -      +
    779F  ILE*     3.6     6.4    +      -       -      +
    780F  ASP*     3.5    18.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 777 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    707F  PHE*     6.2     3.8    -      -       +      -
    738F  LEU*     4.9    16.6    -      -       +      -
    773F  ASN      3.1    10.5    +      -       -      +
    774F  GLN*     3.7    10.3    -      -       -      +
    775F  ILE      3.2     0.6    -      -       -      -
    776F  LYS*     1.3    76.0    -      -       -      +
    778F  ALA*     1.3    66.1    +      -       -      +
    779F  ILE      3.1     2.0    -      -       -      -
    780F  ASP*     3.2    16.9    +      -       -      +
    781F  LYS*     3.2    13.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 778 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    741F  PHE*     4.5     8.4    -      -       +      -
    745F  LYS*     3.0    34.8    +      -       -      +
    774F  GLN      3.2    11.7    +      -       -      +
    775F  ILE*     3.6    12.3    -      -       -      +
    777F  GLU*     1.3    73.8    -      -       -      +
    779F  ILE*     1.3    61.6    +      -       -      +
    781F  LYS*     3.3     8.4    +      -       -      +
    782F  ARG*     3.1    23.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 779 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    775F  ILE      3.5     8.9    +      -       -      +
    776F  LYS*     3.8    10.1    -      -       -      +
    777F  GLU      3.1     1.0    -      -       -      -
    778F  ALA*     1.3    76.7    -      -       -      +
    780F  ASP*     1.3    65.9    +      -       -      +
    782F  ARG*     3.3    21.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 780 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    646F  TYR*     4.7    14.6    -      -       -      +
    680F  HIS*     4.8     7.3    +      -       -      -
    681F  ALA*     5.8     4.9    -      -       -      +
    776F  LYS      3.5     9.9    +      -       -      +
    777F  GLU*     3.2    11.8    +      -       -      +
    779F  ILE*     1.3    78.4    -      -       -      +
    781F  LYS*     1.3    61.1    +      -       -      +
    782F  ARG      4.7     1.7    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 781 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    680F  HIS*     4.1    20.8    +      -       +      -
    711F  SER*     4.2    20.4    -      -       -      +
    714F  PHE*     5.7    11.7    -      -       +      -
    715F  ALA*     5.0     8.0    -      -       +      +
    777F  GLU      3.2     8.8    +      -       -      +
    778F  ALA*     3.7    10.3    -      -       -      +
    779F  ILE      3.2     0.6    -      -       -      -
    780F  ASP*     1.3    79.8    -      -       -      +
    782F  ARG*     1.3    61.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 782 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    683F  LYS*     5.7     4.2    +      -       -      -
    778F  ALA      3.1    16.4    +      -       -      +
    779F  ILE*     3.3    15.8    +      -       -      +
    780F  ASP      4.7     1.8    -      -       -      -
    781F  LYS*     1.3    80.5    -      -       -      +
----------------------------------------------------------
 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