Contacts of the helix formed by residues 765 - 781 (chain A) in PDB entry 3L6X


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 SER 765 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    718A  GLU*     2.7    25.2    +      -       -      -
    763A  ASN      3.6     1.6    +      -       -      -
    764A  PHE*     1.3    76.2    -      -       -      +
    766A  GLU*     1.3    65.4    +      -       -      +
    767A  ASP*     3.5     8.2    +      -       -      +
    768A  THR*     3.1    21.1    +      -       -      -
    769A  VAL*     3.1    13.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 766 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    764A  PHE      3.9     0.6    +      -       -      -
    765A  SER*     1.3    71.4    -      -       -      +
    767A  ASP*     1.3    65.7    +      -       -      +
    769A  VAL*     3.3     3.1    +      -       -      +
    770A  ILE*     2.9    51.3    +      -       +      +
    809A  SER*     2.8    36.8    +      -       -      +
    811A  LYS*     3.9    15.6    +      -       -      +
    812A  GLU*     4.0    18.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 767 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    722A  LYS*     3.4    24.8    +      -       -      +
    765A  SER*     3.3     7.5    +      -       -      +
    766A  GLU*     1.3    88.0    -      -       -      +
    768A  THR*     1.3    56.8    +      -       -      +
    770A  ILE*     3.9     5.5    -      -       -      +
    771A  SER*     3.0    28.8    +      -       -      -
    811A  LYS*     4.7    10.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 768 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    718A  GLU*     2.6    40.9    +      -       +      +
    721A  VAL*     4.2    11.9    -      -       +      -
    722A  LYS*     4.3    21.2    -      -       +      +
    764A  PHE*     3.9    26.0    -      -       +      -
    765A  SER*     3.1     8.2    +      -       -      -
    767A  ASP*     1.3    75.3    -      -       -      +
    769A  VAL*     1.3    67.5    +      -       -      +
    771A  SER*     3.1     7.7    +      -       -      -
    772A  ILE*     2.9    32.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 769 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    752A  ASN      5.3     0.4    -      -       -      +
    753A  LEU*     4.2     6.5    -      -       +      -
    754A  PRO*     4.3    17.0    -      -       +      -
    761A  SER      4.9     0.7    -      -       -      +
    764A  PHE*     4.0    23.6    -      -       +      +
    765A  SER      3.1    14.0    +      -       -      +
    766A  GLU      3.8     5.4    -      -       -      +
    768A  THR*     1.3    75.8    -      -       -      +
    770A  ILE*     1.3    58.5    +      -       -      +
    772A  ILE*     3.2     9.2    +      -       -      +
    773A  LEU*     2.9    45.1    +      -       +      +
    802A  ILE*     4.1    13.9    -      -       +      -
    808A  ARG*     4.5     4.9    -      -       -      +
    812A  GLU*     3.4    28.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 770 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    766A  GLU*     2.9    43.2    +      -       +      +
    767A  ASP*     4.0     7.0    -      -       -      +
    769A  VAL*     1.3    75.2    -      -       -      +
    771A  SER*     1.3    58.6    +      -       -      +
    773A  LEU*     3.7     6.2    -      -       -      -
    774A  ASN*     2.8    52.2    +      -       -      +
    811A  LYS*     3.9    43.3    -      -       +      +
    812A  GLU*     4.0    22.2    -      -       +      +
    815A  ALA*     4.2    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 771 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    722A  LYS*     3.9    24.8    +      -       -      +
    725A  SER*     2.6    29.4    +      -       -      -
    726A  GLY      4.3     1.2    +      -       -      -
    729A  ARG*     3.2    19.5    +      -       -      +
    767A  ASP      3.0    19.4    +      -       -      -
    768A  THR      3.3     6.1    -      -       -      -
    770A  ILE*     1.3    78.5    -      -       -      +
    772A  ILE*     1.3    57.6    +      -       -      +
    774A  ASN*     4.7     2.5    -      -       -      +
    775A  THR*     2.8    33.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 772 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    713A  LEU*     5.7     0.2    -      -       +      -
    721A  VAL*     4.1    14.1    -      -       +      -
    725A  SER*     3.8    17.5    -      -       -      +
    749A  LEU*     3.6    32.1    -      -       +      +
    752A  ASN*     3.4    41.7    -      -       +      +
    753A  LEU*     3.7    15.7    -      -       +      -
    764A  PHE*     4.6     1.1    -      -       +      -
    768A  THR*     2.9    24.1    +      -       +      +
    769A  VAL*     3.6     7.0    -      -       -      +
    771A  SER*     1.3    76.6    -      -       -      +
    773A  LEU*     1.3    53.2    +      -       -      +
    775A  THR*     3.1     3.7    +      -       -      -
    776A  ILE*     2.7    44.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 773 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    753A  LEU*     3.9    18.8    -      -       +      -
    769A  VAL*     2.9    39.7    +      -       +      +
    770A  ILE*     3.7     4.0    -      -       -      +
    772A  ILE*     1.3    72.7    -      -       -      +
    774A  ASN*     1.3    56.5    +      -       -      +
    776A  ILE*     3.0     8.4    +      -       +      +
    777A  ASN      2.8    25.3    +      -       -      -
    799A  LEU*     3.3    34.1    -      -       +      -
    802A  ILE*     4.1     9.9    -      -       +      -
    812A  GLU*     4.0     8.7    -      -       +      +
    815A  ALA*     3.8    32.8    -      -       +      +
    816A  ALA*     3.9    16.6    -      -       +      +
    819A  VAL*     3.4    11.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 774 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    729A  ARG*     4.1    20.3    -      -       -      +
    770A  ILE*     2.8    43.4    +      -       -      +
    771A  SER*     3.8     5.1    -      -       -      +
    773A  LEU*     1.3    72.0    -      -       -      +
    775A  THR*     1.3    57.3    +      -       -      +
    777A  ASN*     3.3     8.8    +      -       -      +
    778A  GLU*     2.9    29.5    +      -       -      +
    815A  ALA*     4.1    13.7    -      -       -      +
    818A  LEU*     5.3     6.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 775 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    725A  SER*     2.7    41.3    +      -       -      +
    728A  LEU*     4.0     8.3    -      -       +      -
    729A  ARG*     3.0    34.1    +      -       -      +
    749A  LEU*     3.9    23.3    -      -       +      -
    771A  SER      2.8    13.5    +      -       -      -
    772A  ILE*     3.5     4.3    -      -       -      -
    774A  ASN*     1.3    72.9    -      -       -      +
    776A  ILE*     1.3    67.1    +      -       -      +
    778A  GLU*     3.2     2.4    +      -       -      +
    779A  VAL*     2.9    32.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 776 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    746A  ILE*     4.6     5.6    -      -       +      -
    749A  LEU*     3.9    29.2    -      -       +      -
    750A  VAL*     4.4    12.1    -      -       +      -
    753A  LEU*     3.6    31.0    -      -       +      -
    772A  ILE*     2.7    29.7    +      -       +      +
    773A  LEU*     3.0    12.3    +      -       +      +
    775A  THR*     1.3    73.4    -      -       -      +
    777A  ASN*     1.3    62.5    +      -       -      +
    779A  VAL*     3.1     4.6    +      -       -      +
    780A  ILE*     3.0    28.6    +      -       +      +
    790A  LEU*     4.0    22.0    -      -       +      -
    799A  LEU*     5.3     1.6    -      -       +      -
    819A  VAL*     3.8    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 777 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    773A  LEU      2.8    12.1    +      -       -      +
    774A  ASN*     3.5    11.7    -      -       -      +
    775A  THR      3.2     0.2    -      -       -      -
    776A  ILE*     1.3    77.1    -      -       -      +
    778A  GLU*     1.3    64.3    +      -       -      +
    780A  ILE*     3.3     6.7    +      -       -      +
    781A  ALA*     3.0    24.8    +      -       -      +
    818A  LEU*     4.2    18.9    -      -       +      +
    819A  VAL*     3.5    23.6    -      -       +      +
    822A  THR*     2.7    33.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 778 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    729A  ARG*     3.9    32.3    -      -       +      +
    732A  ALA*     4.0    16.2    -      -       +      +
    733A  VAL*     3.7    31.3    -      -       +      +
    774A  ASN      2.9    14.0    +      -       -      +
    775A  THR      3.2     7.4    +      -       -      +
    777A  ASN*     1.3    81.1    +      -       -      +
    779A  VAL*     1.3    61.1    +      -       -      +
    780A  ILE      3.3     0.9    +      -       -      -
    781A  ALA*     3.4    20.3    +      -       -      +
    782A  GLU      5.1     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 779 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    728A  LEU      4.8     2.9    -      -       -      +
    732A  ALA*     3.7    22.9    -      -       +      -
    741A  ILE*     3.6    28.5    -      -       +      -
    742A  GLY*     4.2     7.2    -      -       -      -
    745A  ALA*     4.6     9.4    -      -       +      -
    746A  ILE*     3.9    29.2    -      -       +      -
    749A  LEU*     4.7     1.8    -      -       +      -
    775A  THR*     2.9    33.6    +      -       +      +
    776A  ILE*     3.1     4.7    +      -       -      +
    778A  GLU*     1.3    75.9    -      -       -      +
    780A  ILE*     1.3    57.9    +      -       -      +
    781A  ALA      3.5     0.2    -      -       -      -
    783A  ASN*     3.5    22.2    +      -       -      +
    786A  ALA*     3.6     2.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 780 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    746A  ILE*     3.9    16.8    -      -       +      -
    776A  ILE      3.0    19.6    +      -       -      +
    777A  ASN*     3.6     6.7    -      -       -      +
    779A  VAL*     1.3    78.4    -      -       -      +
    781A  ALA*     1.3    56.2    +      -       -      +
    782A  GLU      3.2     3.1    +      -       -      -
    783A  ASN*     3.5     3.9    +      -       -      +
    786A  ALA*     3.9    12.3    -      -       -      +
    787A  ALA*     3.8    29.8    -      -       +      +
    790A  LEU*     4.0     9.9    -      -       +      -
    819A  VAL*     3.9    18.4    -      -       +      -
    822A  THR*     3.8    18.7    -      -       +      +
    823A  ILE*     3.7    30.5    -      -       +      +
    826A  TYR*     2.7    33.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 781 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    777A  ASN*     3.0    16.3    +      -       -      +
    778A  GLU*     3.4    20.6    +      -       -      +
    779A  VAL      3.5     0.2    -      -       -      -
    780A  ILE*     1.3    74.9    -      -       -      +
    782A  GLU*     1.3    72.4    +      -       +      +
    822A  THR*     3.9    14.9    -      -       +      +
    826A  TYR*     2.7    16.3    +      -       -      -
----------------------------------------------------------
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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