Contacts of the helix formed by residues 737 - 746 (chain D) in PDB entry 6V3O


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 ARG 737 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    735D  GLU*     3.2    12.2    +      -       -      +
    736D  ALA*     1.3    82.5    -      -       +      +
    738D  PHE*     1.3    64.4    +      -       -      +
    739D  VAL*     3.4     2.7    -      -       -      -
    740D  GLU*     2.7    35.8    +      -       +      +
    741D  TYR*     3.0    21.0    +      -       -      +
    852D  GLU*     4.8    13.6    +      -       -      -
    853D  LEU*     3.9    24.9    -      -       +      +
    856D  PHE*     5.6     1.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 738 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    731D  VAL*     3.5    38.1    -      -       +      +
    732D  VAL*     3.7    28.7    -      -       +      +
    735D  GLU*     3.2    25.1    +      -       +      +
    736D  ALA      3.3     0.8    -      -       -      -
    737D  ARG*     1.3    76.9    -      -       -      +
    739D  VAL*     1.3    63.5    +      -       +      +
    741D  TYR*     3.0    10.5    +      +       -      +
    742D  PHE*     2.8    32.0    +      -       +      +
    769D  ILE*     4.1     8.7    -      -       +      -
    777D  TRP*     3.8    34.8    -      +       -      -
    781D  TRP*     4.2    22.4    -      +       -      -
    788D  LEU*     4.5    10.3    -      -       +      -
    856D  PHE*     4.0    16.2    -      +       -      -
    860D  LEU*     4.8     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 739 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    736D  ALA      4.2    14.4    -      -       -      +
    737D  ARG*     4.8     0.4    -      -       -      -
    738D  PHE*     1.3    79.9    -      -       +      +
    740D  GLU*     1.3    61.7    +      -       +      +
    742D  PHE*     3.1     7.9    +      -       +      +
    743D  ARG*     2.9    60.1    +      -       +      +
    768D  GLY*     5.3    13.7    -      -       -      -
    769D  ILE*     4.9    15.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 740 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737D  ARG*     2.7    46.9    +      -       +      +
    738D  PHE      3.1     0.6    -      -       -      -
    739D  VAL*     1.3    85.3    -      -       +      +
    741D  TYR*     1.3    53.5    +      -       -      +
    743D  ARG*     3.6     5.7    +      -       -      +
    744D  SER*     2.4    36.8    +      -       -      +
    850D  ALA*     4.9     2.3    -      -       -      +
    852D  GLU*     4.0    11.1    -      -       -      +
    853D  LEU*     3.3    26.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 741 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    737D  ARG      3.0    11.3    +      -       -      +
    738D  PHE*     3.0    11.9    +      +       -      +
    740D  GLU*     1.3    76.9    -      -       -      +
    742D  PHE*     1.3    60.4    +      -       -      +
    744D  SER*     3.1     5.2    +      -       -      -
    745D  ALA*     2.9    33.5    +      -       +      +
    781D  TRP*     3.8    24.0    -      +       -      -
    786D  PHE*     5.2     5.6    -      +       -      -
    845D  ASP*     2.7    43.0    +      -       -      -
    849D  VAL*     4.0    19.7    -      -       +      -
    853D  LEU*     4.3    25.2    -      -       +      +
    856D  PHE*     4.0    24.9    -      +       +      -
    857D  GLY*     3.4    21.4    +      -       -      -
    860D  LEU*     3.7    20.2    -      -       +      +
    861D  ARG*     4.1     3.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 742 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    738D  PHE*     2.8    22.2    +      -       +      +
    739D  VAL*     3.5     9.6    -      -       -      +
    741D  TYR*     1.3    75.7    -      -       -      +
    743D  ARG*     1.3    70.6    +      -       -      +
    744D  SER      3.2     1.0    +      -       -      -
    746D  THR*     2.7    48.0    +      -       +      -
    748D  GLU*     3.6    24.7    -      -       +      -
    769D  ILE*     3.9    18.2    -      -       +      -
    772D  LEU*     3.7    21.5    -      -       +      -
    776D  PRO      4.7     0.4    -      -       -      -
    777D  TRP*     4.0    13.9    -      +       -      -
    780D  SER*     3.5    22.2    -      -       -      -
    781D  TRP*     3.2    49.8    -      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 743 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    739D  VAL*     2.9    37.0    +      -       +      +
    740D  GLU*     4.2     6.1    -      -       -      +
    742D  PHE*     1.3    83.7    -      -       +      +
    744D  SER*     1.3    57.4    +      -       -      +
    746D  THR*     3.6     5.2    -      -       -      +
    748D  GLU*     3.3    38.2    +      -       -      +
    749D  THR*     3.4    38.8    +      -       +      +
    762D  LYS*     3.6    36.2    -      -       -      +
    768D  GLY      5.5     0.4    +      -       -      -
    769D  ILE*     5.6     2.8    -      -       -      +
    772D  LEU*     5.1     5.8    -      -       -      +
    913D  ARG*     3.4    21.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 744 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    740D  GLU*     2.4    32.6    +      -       -      +
    741D  TYR*     3.1     5.0    +      -       -      -
    742D  PHE      3.1     0.8    -      -       -      -
    743D  ARG*     1.3    77.7    -      -       -      +
    745D  ALA*     1.3    63.2    +      -       -      +
    746D  THR      3.3     2.9    +      -       -      -
    848D  LEU*     3.3    23.3    -      -       -      +
    849D  VAL*     3.6    22.9    -      -       -      -
    850D  ALA      5.2     0.8    +      -       -      -
    853D  LEU*     5.1     3.3    -      -       -      +
    913D  ARG*     2.8    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 745 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    741D  TYR*     2.9    29.9    +      -       +      +
    744D  SER*     1.3    75.1    -      -       -      +
    746D  THR*     1.3    63.5    +      -       +      +
    781D  TRP*     4.8     4.0    -      -       +      -
    784D  THR*     3.3    18.2    -      -       -      +
    841D  ALA      5.8     0.2    -      -       -      +
    844D  TYR*     3.8    18.2    -      -       -      +
    845D  ASP*     3.5    24.9    -      -       -      +
    848D  LEU*     4.9     3.6    -      -       -      -
    849D  VAL*     3.7    11.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 746 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    742D  PHE*     2.7    33.1    +      -       +      +
    743D  ARG      3.6     6.4    -      -       -      +
    744D  SER      3.3     0.2    -      -       -      -
    745D  ALA*     1.3    82.5    -      -       -      +
    747D  PRO*     1.3    69.3    -      -       -      +
    748D  GLU*     3.1    22.2    +      -       -      +
    780D  SER*     3.7    15.5    -      -       -      +
    781D  TRP*     3.6    37.0    -      -       +      -
    784D  THR*     3.8     2.7    -      -       +      -
    844D  TYR*     5.4     0.4    -      -       -      -
    848D  LEU*     5.8     0.9    -      -       -      -
    909D  LEU*     5.2     2.2    -      -       -      -
    913D  ARG*     3.0    20.3    +      -       -      -
----------------------------------------------------------
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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