Contacts of the helix formed by residues 771 - 797 (chain A) in PDB entry 1TBF


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 PRO 771 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    560A  SER*     3.7    35.0    -      -       -      +
    769A  THR      4.6     1.1    -      -       -      +
    770A  LYS*     1.3    89.6    -      -       +      +
    772A  TRP*     1.3    67.2    +      -       -      +
    773A  PRO*     3.3     9.2    -      -       +      -
    774A  ILE*     2.9    37.5    +      -       +      +
    775A  GLN      3.0     6.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 772 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    770A  LYS      3.3     1.8    +      -       -      -
    771A  PRO*     1.3    69.8    -      -       -      +
    773A  PRO*     1.3    75.5    -      -       +      +
    775A  GLN*     4.3     4.7    -      -       +      -
    776A  GLN*     2.9    51.7    +      -       +      +
    849A  ASN*     3.5    22.9    +      -       -      +
    852A  LYS*     3.5    58.4    -      -       +      +
    853A  TRP*     3.5    57.2    -      +       -      -
    856A  LEU*     3.8    19.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 773 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    771A  PRO*     3.4    11.0    -      -       +      -
    772A  TRP*     1.3   101.4    -      -       +      +
    774A  ILE*     1.3    62.0    +      -       +      +
    776A  GLN*     3.7     7.9    +      -       +      +
    777A  ARG*     3.3    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 774 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    560A  SER      3.7     9.6    -      -       -      +
    561A  PHE      4.8     0.4    -      -       -      +
    562A  SER*     3.5    34.8    -      -       -      +
    564A  PHE*     4.1    17.3    -      -       +      -
    770A  LYS*     3.6    20.2    -      -       +      -
    771A  PRO*     2.9    37.0    +      -       +      +
    773A  PRO*     1.3    76.0    -      -       +      +
    775A  GLN*     1.3    65.7    +      -       -      +
    777A  ARG*     3.2     3.3    +      -       -      +
    778A  ILE*     2.9    42.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 775 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  VIA      4.7     3.2    +      -       -      -
    767A  ALA*     2.9    38.6    +      -       -      +
    768A  ILE*     3.5    19.4    -      -       -      +
    770A  LYS*     3.8     5.8    -      -       -      +
    771A  PRO      3.0     5.5    +      -       -      -
    772A  TRP*     3.8     7.9    -      -       +      +
    774A  ILE*     1.3    75.7    -      -       -      +
    776A  GLN*     1.3    58.9    +      -       -      +
    778A  ILE*     4.5     2.0    -      -       -      +
    779A  ALA*     2.8    31.2    +      -       -      +
    817A  GLN*     3.0    20.3    +      -       -      +
    849A  ASN*     3.5    35.2    -      -       -      +
    853A  TRP*     2.9    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 776 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    772A  TRP*     2.9    51.9    +      -       +      +
    773A  PRO*     4.0     7.4    -      -       +      +
    775A  GLN*     1.3    77.5    -      -       -      +
    777A  ARG*     1.3    64.5    +      -       +      +
    779A  ALA*     3.8     2.1    -      -       -      +
    780A  GLU*     3.1    22.0    +      -       -      +
    853A  TRP*     4.2    22.9    -      -       +      -
    856A  LEU*     5.3     4.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 777 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    564A  PHE*     3.4    44.7    -      -       +      +
    565A  GLU*     5.1     6.3    +      -       -      -
    773A  PRO*     3.3    20.9    +      -       -      +
    774A  ILE      3.2     4.8    +      -       -      +
    776A  GLN*     1.3    80.4    -      -       +      +
    778A  ILE*     1.3    60.3    +      -       -      +
    780A  GLU*     3.3     9.8    +      -       -      +
    781A  LEU*     3.2    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 778 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  VIA      5.1     0.7    -      -       -      -
    563A  ASP*     5.6     0.4    -      -       -      +
    564A  PHE*     3.8    20.4    -      -       +      -
    612A  TYR*     3.5    32.5    -      -       +      -
    620A  ASN*     5.1    12.8    -      -       -      +
    767A  ALA*     3.6    31.9    -      -       +      +
    770A  LYS*     5.0     2.2    -      -       +      -
    774A  ILE*     2.9    39.8    +      -       +      +
    775A  GLN*     4.1     4.0    -      -       -      +
    777A  ARG*     1.3    72.3    -      -       -      +
    779A  ALA*     1.3    67.7    +      -       -      +
    781A  LEU*     3.0    13.9    +      -       +      +
    782A  VAL*     3.0    23.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 779 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  VIA      3.6     8.9    -      -       +      +
    775A  GLN*     2.8    28.2    +      -       -      +
    776A  GLN      3.8     2.2    -      -       -      +
    778A  ILE*     1.3    76.5    -      -       -      +
    780A  GLU*     1.3    57.0    +      -       -      +
    782A  VAL*     3.3     8.4    +      -       -      -
    783A  ALA*     2.9    30.9    +      -       -      +
    813A  ILE*     5.0     3.4    -      -       +      -
    817A  GLN*     3.7    15.0    -      -       +      +
    853A  TRP*     3.5    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 780 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    776A  GLN      3.1    13.0    +      -       -      +
    777A  ARG*     3.5    11.9    -      -       -      +
    778A  ILE      3.2     0.2    -      -       -      -
    779A  ALA*     1.3    77.2    -      -       -      +
    781A  LEU*     1.3    58.3    +      -       +      +
    783A  ALA*     3.5     6.5    +      -       -      +
    784A  THR*     2.8    39.8    +      -       -      +
    810A  LYS*     3.5    33.2    +      -       -      -
    813A  ILE*     4.7     9.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 781 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    564A  PHE*     5.2     9.0    -      -       +      -
    611A  ALA*     3.7    35.6    -      -       +      +
    612A  TYR*     3.9    15.0    -      -       +      +
    614A  ASN*     5.6     1.6    -      -       -      +
    777A  ARG      3.2    14.9    +      -       -      +
    778A  ILE*     3.0    22.0    +      -       +      +
    780A  GLU*     1.3    76.6    -      -       +      +
    782A  VAL*     1.3    65.7    +      -       -      +
    784A  THR*     3.2     8.9    +      -       +      +
    785A  GLU*     3.0    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 782 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  VIA      3.8    42.4    -      -       +      +
    612A  TYR*     3.7    41.3    -      -       +      -
    778A  ILE*     3.0    19.3    +      -       +      +
    779A  ALA*     3.6     6.5    -      -       -      +
    781A  LEU*     1.3    76.1    -      -       -      +
    783A  ALA*     1.3    63.0    +      -       -      +
    785A  GLU*     3.1     5.6    +      -       -      +
    786A  PHE*     2.9    55.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 783 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  VIA      3.9    10.7    -      -       +      +
    779A  ALA      2.9    17.5    +      -       -      +
    780A  GLU*     3.7     7.4    -      -       -      +
    782A  VAL*     1.3    77.2    -      -       -      +
    784A  THR*     1.3    55.0    +      -       -      +
    786A  PHE*     3.7     7.7    -      -       -      +
    787A  PHE*     2.8    49.4    +      -       +      -
    813A  ILE*     3.6    30.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 784 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    611A  ALA*     3.6    19.5    -      -       +      -
    780A  GLU*     2.8    33.5    +      -       -      +
    781A  LEU*     3.2    10.1    +      -       +      +
    783A  ALA*     1.3    75.9    -      -       -      +
    785A  GLU*     1.3    60.9    +      -       -      +
    787A  PHE*     3.9     7.5    -      -       -      +
    788A  ASP*     3.0    25.1    +      -       +      +
    807A  ARG*     4.9    12.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 785 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    610A  VAL*     3.3    14.0    -      -       +      +
    611A  ALA*     4.3     9.6    -      -       +      +
    612A  TYR*     2.9    12.3    +      -       +      +
    613A  HIS*     2.7    54.1    +      -       -      -
    657A  HIS*     3.4     4.3    +      -       -      -
    659A  GLY*     3.3    32.2    -      -       -      +
    660A  VAL      5.6     0.2    -      -       -      -
    781A  LEU      3.0    12.4    +      -       -      +
    782A  VAL*     3.5     8.1    -      -       -      +
    784A  THR*     1.3    78.6    -      -       -      +
    786A  PHE*     1.3    69.3    +      -       +      +
    788A  ASP*     3.3     7.1    +      -       -      +
    789A  GLN*     3.0    21.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 786 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501A  VIA      3.7    64.2    -      +       +      -
    613A  HIS*     5.5     6.3    -      +       -      -
    782A  VAL*     2.9    42.5    +      -       +      -
    783A  ALA*     3.7     7.4    -      -       -      +
    785A  GLU*     1.3    83.7    -      -       +      +
    787A  PHE*     1.3    63.8    +      -       -      +
    789A  GLN*     3.2    11.9    +      -       -      +
    790A  GLY      3.0    18.4    +      -       -      -
    804A  LEU*     3.5    39.9    -      -       +      +
    805A  MET*     3.6    25.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 787 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    783A  ALA*     2.8    39.3    +      -       +      +
    784A  THR*     4.0     2.0    -      -       -      +
    786A  PHE*     1.3    72.9    -      -       -      +
    788A  ASP*     1.3    56.8    +      -       -      +
    790A  GLY*     3.2     1.6    +      -       -      -
    791A  ASP*     2.9    32.6    +      -       -      +
    803A  ASP      4.3     3.4    -      -       -      -
    804A  LEU      3.6    17.5    -      -       -      -
    805A  MET      3.6    11.4    -      -       -      +
    806A  ASN      3.4    18.6    -      -       -      -
    807A  ARG*     3.5    59.5    -      -       +      +
    809A  LYS      4.7     1.3    -      -       -      -
    810A  LYS*     3.9    40.4    -      -       +      -
    813A  ILE*     4.2    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 788 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    659A  GLY*     5.0     5.0    -      -       -      +
    660A  VAL*     5.8     0.3    -      -       -      +
    784A  THR*     3.0    20.1    +      -       +      +
    785A  GLU*     3.6     7.4    -      -       +      +
    786A  PHE      3.2     0.2    -      -       -      -
    787A  PHE*     1.3    74.3    -      -       -      +
    789A  GLN*     1.3    65.3    +      -       -      +
    791A  ASP*     3.2    15.9    +      -       -      +
    792A  ARG*     3.1    35.9    +      -       -      +
    807A  ARG*     4.0     3.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 789 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    502A  GOL      3.5     6.8    +      -       -      -
    659A  GLY      4.3     2.3    +      -       -      +
    660A  VAL*     3.4    20.4    -      -       +      +
    661A  SER*     3.0    47.7    +      -       -      +
    664A  PHE*     3.6    18.2    -      -       +      +
    785A  GLU      3.0    13.2    +      -       -      +
    786A  PHE*     3.5    12.4    -      -       -      +
    788A  ASP*     1.3    77.4    +      -       -      +
    790A  GLY*     1.3    57.3    +      -       -      +
    792A  ARG*     3.0     7.8    +      -       -      +
    793A  GLU*     2.8    49.9    +      -       -      +
    805A  MET*     3.7    19.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 790 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    786A  PHE      3.0    11.5    +      -       -      -
    787A  PHE      3.2     0.6    +      -       -      -
    789A  GLN*     1.3    76.4    -      -       -      +
    791A  ASP*     1.4    63.1    +      -       -      +
    793A  GLU*     3.2    17.7    +      -       -      +
    794A  ARG*     3.0    26.3    +      -       -      +
    801A  PRO*     3.6     9.4    -      -       -      +
    805A  MET*     3.2    24.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 791 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    787A  PHE      2.9    16.4    +      -       -      +
    788A  ASP*     3.4    15.0    -      -       -      +
    789A  GLN      3.2     0.2    -      -       -      -
    790A  GLY*     1.4    75.5    -      -       -      +
    792A  ARG*     1.3    63.2    +      -       +      +
    794A  ARG*     2.8    35.1    +      -       -      +
    795A  LYS*     3.2    29.2    +      -       +      +
    805A  MET      5.3     0.2    -      -       -      +
    807A  ARG*     2.8    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 792 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    658A  PRO*     4.9     8.1    +      -       -      +
    660A  VAL*     3.6    32.1    -      -       -      +
    664A  PHE*     3.8    23.6    -      -       +      -
    788A  ASP*     3.1    27.9    +      -       -      +
    789A  GLN      3.0     8.4    +      -       -      +
    791A  ASP*     1.3    75.4    -      -       +      +
    793A  GLU*     1.3    60.1    +      -       -      +
    795A  LYS*     3.2     2.4    +      -       -      -
    796A  GLU*     2.8    78.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 793 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    502A  GOL      2.6    50.4    +      -       -      +
    664A  PHE*     3.8    14.8    -      -       +      -
    789A  GLN*     2.8    34.3    +      -       -      +
    790A  GLY*     3.5     9.6    -      -       -      +
    792A  ARG*     1.3    76.1    -      -       -      +
    794A  ARG*     1.4    62.7    +      -       -      +
    797A  LEU*     3.1    31.7    +      -       +      +
    798A  ASN      3.2     5.9    +      -       -      -
    799A  ILE*     3.6    19.1    +      -       +      +
    801A  PRO*     3.7    26.4    -      -       +      +
    802A  THR      4.9     0.2    +      -       -      -
    805A  MET*     4.0     5.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 794 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    790A  GLY      3.0    15.2    +      -       -      +
    791A  ASP*     2.8    45.4    +      -       -      +
    792A  ARG      3.3     0.4    -      -       -      -
    793A  GLU*     1.4    76.6    -      -       -      +
    795A  LYS*     1.3    59.2    +      -       +      +
    798A  ASN*     3.4    22.5    +      -       -      +
    799A  ILE      3.4    18.5    +      -       -      +
    800A  GLU*     5.7     0.2    -      -       -      -
    801A  PRO*     3.7    25.4    -      -       +      +
    806A  ASN*     3.4    29.3    +      -       -      +
    807A  ARG*     4.6     2.8    -      -       -      +
    808A  GLU*     4.7     9.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 795 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    791A  ASP*     3.2    16.9    +      -       +      +
    792A  ARG*     3.2     4.5    +      -       -      +
    793A  GLU      3.2     0.4    -      -       -      -
    794A  ARG*     1.3    81.6    -      -       +      +
    796A  GLU*     1.3    66.5    +      -       +      +
    797A  LEU      3.6     0.2    -      -       -      -
    798A  ASN*     4.6     8.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 796 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    664A  PHE*     3.9     8.8    -      -       +      -
    668A  THR*     5.1     4.6    -      -       +      +
    792A  ARG*     2.8    71.4    +      -       -      +
    795A  LYS*     1.3    79.9    -      -       +      +
    797A  LEU*     1.3    69.1    +      -       +      +
    798A  ASN*     6.0     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 797 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    502A  GOL      4.4     0.9    -      -       -      +
    664A  PHE*     4.3    14.8    -      -       +      -
    667A  ASN*     3.6    48.2    -      -       -      +
    668A  THR*     3.7    27.6    -      -       +      -
    793A  GLU*     3.1    16.3    +      -       +      +
    796A  GLU*     1.3    84.2    -      -       +      +
    798A  ASN*     1.3    72.3    +      -       -      +
    799A  ILE*     3.7    23.3    -      -       +      +
----------------------------------------------------------
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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