Contacts of the helix formed by residues 55 - 81 (chain H) in PDB entry 1KYO


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 GLN 55 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102C  TYR*     4.5     6.0    +      -       -      -
    323C  LYS*     2.7    39.8    +      -       -      +
    327C  PHE*     5.6     4.4    -      -       -      -
     51H  ARG*     5.8     1.3    -      -       +      -
     52H  PHE*     4.1    23.6    -      -       +      +
     53H  LYS      3.9     1.0    -      -       -      +
     54H  SER*     1.3    83.4    -      -       -      +
     56H  PHE*     1.3    53.3    +      -       -      +
     57H  LEU      2.7    19.0    +      -       -      -
     58H  TYR*     2.9    41.4    +      -       -      +
     59H  VAL*     3.4    11.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 56 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52H  PHE*     3.0    46.7    -      -       +      +
     53H  LYS*     3.2    34.3    -      -       +      -
     54H  SER      4.4     1.1    -      -       -      -
     55H  GLN*     1.3    76.5    -      -       -      +
     57H  LEU*     1.3    84.7    +      -       +      +
     59H  VAL*     3.8     1.6    -      -       -      -
     60H  LEU*     2.7    55.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 57 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324C  PHE*     5.2     0.4    -      -       -      -
     54H  SER      4.6     7.6    -      -       -      +
     55H  GLN      2.7     7.1    +      -       -      -
     56H  PHE*     1.3   104.5    -      -       +      +
     58H  TYR*     1.3    67.8    +      -       +      +
     59H  VAL      3.0     1.8    -      -       -      -
     60H  LEU*     4.2     5.6    -      -       +      +
     61H  ILE*     3.0    52.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 58 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320C  VAL*     3.3    49.3    -      -       +      +
    323C  LYS*     3.8    35.7    +      -       +      -
    324C  PHE*     3.9    19.8    -      +       +      +
    327C  PHE*     3.2    19.7    -      -       +      +
     35G  LEU*     4.5    17.2    +      -       -      +
     54H  SER      3.8    17.0    -      -       -      -
     55H  GLN*     2.9    44.4    +      -       -      +
     57H  LEU*     1.3    81.0    -      -       +      +
     59H  VAL*     1.3    58.7    +      -       -      +
     62H  PRO*     2.9    25.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 59 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327C  PHE*     3.8    34.8    -      -       +      -
    331C  PHE*     3.9    18.7    -      -       +      -
     52H  PHE*     3.9    35.0    -      -       +      -
     55H  GLN*     3.4    12.5    +      -       +      +
     56H  PHE*     3.8     5.8    -      -       -      +
     57H  LEU      3.0     0.4    -      -       -      -
     58H  TYR*     1.3    78.5    -      -       +      +
     60H  LEU*     1.3    71.4    +      -       +      +
     62H  PRO*     3.2     4.0    -      -       -      +
     63H  ALA*     3.1    22.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 60 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52H  PHE*     5.2     6.3    -      -       +      -
     56H  PHE*     2.7    44.2    +      -       +      +
     57H  LEU*     4.3     8.7    -      -       +      +
     59H  VAL*     1.3    82.3    -      -       +      +
     61H  ILE*     1.3    57.9    +      -       +      +
     63H  ALA*     3.0     9.6    +      -       +      +
     64H  GLY*     2.7    34.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 61 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324C  PHE*     3.6    26.2    -      -       +      -
     57H  LEU*     3.0    37.0    +      -       +      +
     60H  LEU*     1.3    72.7    -      -       +      +
     62H  PRO*     1.3    66.8    -      -       +      +
     64H  GLY*     3.9     1.4    -      -       -      -
     65H  ILE*     2.9    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 62 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324C  PHE*     3.9    22.4    -      -       +      +
    327C  PHE*     3.8    30.7    -      -       +      +
    328C  ILE*     4.0    15.0    -      -       +      -
    331C  PHE*     4.1     4.5    -      -       +      -
     57H  LEU      3.6     0.2    -      -       -      +
     58H  TYR      2.9    31.2    -      -       -      +
     59H  VAL      3.2     7.2    -      -       -      +
     61H  ILE*     1.3    93.2    -      -       +      +
     63H  ALA*     1.3    64.7    +      -       -      +
     65H  ILE*     3.3     2.6    +      -       +      +
     66H  TYR*     3.0    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 63 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331C  PHE*     3.8    31.9    -      -       +      -
     59H  VAL*     3.1    13.0    +      -       +      +
     60H  LEU*     3.0    14.9    +      -       +      +
     62H  PRO*     1.3    77.2    -      -       -      +
     64H  GLY*     1.3    54.4    +      -       -      +
     66H  TYR*     3.0     3.3    +      -       -      +
     67H  TRP*     2.7    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 64 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60H  LEU*     2.7    20.7    +      -       -      +
     61H  ILE*     3.9     2.0    -      -       -      -
     63H  ALA*     1.3    72.8    -      -       -      +
     65H  ILE*     1.3    61.6    +      -       -      +
     67H  TRP*     4.6     7.4    -      -       -      -
     68H  TYR*     2.9    33.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 65 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324C  PHE*     4.5     6.5    -      -       +      -
    328C  ILE*     4.5    16.6    -      -       +      -
     61H  ILE*     2.9    45.5    +      -       +      +
     62H  PRO*     3.3     5.4    +      -       +      +
     64H  GLY*     1.3    73.4    -      -       -      +
     66H  TYR*     1.3    71.7    +      -       +      +
     68H  TYR*     3.8     3.4    -      -       -      +
     69H  TRP*     3.2    31.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 66 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328C  ILE*     3.7    33.9    +      -       +      +
    331C  PHE*     4.0    22.0    -      -       +      +
    332C  ASN*     3.0    40.7    +      -       +      +
    335C  LEU*     3.8    26.2    -      -       +      +
    358C  ILE*     3.4    19.2    -      -       -      +
     62H  PRO*     3.0    26.1    +      -       +      +
     63H  ALA*     3.8     2.0    -      -       -      +
     65H  ILE*     1.3    82.6    -      -       +      +
     67H  TRP*     1.3    60.2    +      -       -      +
     68H  TYR      3.1     1.6    -      -       -      -
     69H  TRP*     3.3    35.3    +      +       -      +
     70H  TRP*     2.9    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 67 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63H  ALA*     2.7    22.5    +      -       +      +
     64H  GLY*     4.2     5.4    -      -       -      +
     66H  TYR*     1.3    74.8    -      -       -      +
     68H  TYR*     1.3    95.0    +      +       -      +
     70H  TRP*     3.7    14.1    -      +       -      +
     71H  LYS*     3.0    58.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 68 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64H  GLY*     2.9    20.9    +      -       -      +
     65H  ILE*     3.8     4.9    -      -       -      +
     67H  TRP*     1.3   108.9    -      +       -      +
     69H  TRP*     1.3    57.8    +      -       -      +
     70H  TRP      3.2     0.5    +      -       -      -
     71H  LYS*     3.6     2.7    -      -       +      +
     72H  ASN*     2.9    40.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 69 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332C  ASN*     4.8     0.9    -      -       -      -
    335C  LEU*     4.4     9.6    -      -       +      -
    350C  LEU*     6.0     0.2    -      -       +      -
    351C  MET*     3.5    50.6    -      -       +      +
    354C  ILE*     3.7    38.4    -      -       +      -
    355C  ALA      4.5     3.1    -      -       -      -
    358C  ILE*     4.6     6.3    -      -       +      -
     65H  ILE*     3.2    20.2    +      -       +      +
     66H  TYR*     3.5    44.9    -      +       -      +
     68H  TYR*     1.3    79.4    -      -       -      +
     70H  TRP*     1.3    61.8    +      -       -      +
     72H  ASN*     4.6     5.2    -      -       +      -
     73H  GLY*     3.1    16.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 70 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335C  LEU*     3.9    22.4    -      -       +      +
    338C  GLN*     3.5    38.5    +      -       +      +
    339C  ILE*     4.0     9.0    -      -       +      -
    342C  CYS*     3.2    29.6    -      -       -      -
    348C  TYR*     3.4    34.1    -      +       -      -
    351C  MET*     4.0     9.9    -      -       +      -
     66H  TYR      2.9    16.6    +      -       -      +
     67H  TRP*     3.7    16.8    -      +       -      +
     68H  TYR      3.2     0.2    -      -       -      -
     69H  TRP*     1.3    74.1    -      -       -      +
     71H  LYS*     1.3    60.4    +      -       +      +
     73H  GLY*     3.0     4.2    +      -       -      -
     74H  ASN*     2.7    55.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 71 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67H  TRP*     3.0    51.6    +      -       +      +
     68H  TYR*     3.6     5.4    -      -       -      +
     70H  TRP*     1.3    81.0    -      -       +      +
     72H  ASN*     1.3    66.7    +      -       -      +
     74H  ASN*     2.9    18.7    +      -       -      +
     75H  GLU*     2.9    47.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 72 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68H  TYR*     2.9    26.1    +      -       +      +
     69H  TRP*     4.0     6.5    -      -       +      +
     71H  LYS*     1.3    77.7    -      -       -      +
     73H  GLY*     1.3    65.1    +      -       -      +
     75H  GLU*     3.1    23.1    +      -       -      +
     76H  TYR*     3.3    12.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 73 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347C  PRO*     3.3    29.0    -      -       -      +
    348C  TYR*     4.5     4.9    -      -       -      -
    351C  MET*     4.5    12.3    -      -       -      -
     69H  TRP*     3.1    12.1    +      -       -      -
     70H  TRP      3.0     7.1    +      -       -      -
     72H  ASN*     1.3    81.6    -      -       -      +
     74H  ASN*     1.3    59.7    +      -       -      +
     76H  TYR*     3.6     6.1    +      -       -      +
     77H  ASN      3.4     6.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 74 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348C  TYR*     2.4    33.4    +      -       -      +
     70H  TRP*     2.7    39.4    +      -       +      +
     71H  LYS*     2.9    12.9    +      -       -      +
     73H  GLY*     1.3    72.0    -      -       -      +
     75H  GLU*     1.3    67.0    +      -       -      +
     77H  ASN*     3.3     3.6    -      -       -      +
     78H  GLU*     3.1    30.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 75 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71H  LYS*     2.9    54.4    +      -       +      +
     72H  ASN*     3.1    15.8    +      -       -      +
     74H  ASN*     1.3    76.9    -      -       +      +
     76H  TYR*     1.3    60.6    +      -       -      +
     78H  GLU*     3.1    12.4    +      -       -      +
     79H  PHE*     2.9    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 76 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346C  VAL*     4.6     9.4    -      -       +      -
    347C  PRO*     4.0    18.4    -      -       +      -
     72H  ASN*     3.3     8.8    +      -       -      +
     73H  GLY*     3.7    11.7    -      -       -      +
     75H  GLU*     1.3    78.0    -      -       -      +
     77H  ASN*     1.3    62.3    +      -       -      +
     79H  PHE*     4.2    12.3    -      +       +      -
     80H  LEU*     3.0    59.6    +      -       +      +
     88H  GLU*     3.6    33.5    +      -       -      +
     92H  VAL*     3.9    15.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 77 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345C  GLU*     3.0    33.8    +      -       -      +
    347C  PRO*     3.3    37.7    -      -       +      +
    348C  TYR*     3.4    25.5    +      -       +      +
     62D  MET      4.1     6.8    +      -       -      -
     73H  GLY      3.4     3.1    +      -       -      +
     74H  ASN*     3.3    11.1    +      -       -      +
     75H  GLU      3.1     0.4    -      -       -      -
     76H  TYR*     1.3    77.6    -      -       -      +
     78H  GLU*     1.3    64.5    +      -       -      +
     79H  PHE      3.0     1.4    +      -       -      -
     80H  LEU*     3.1    14.3    +      -       -      +
     81H  TYR*     3.2    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 78 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74H  ASN*     3.1    18.7    +      -       -      +
     75H  GLU*     3.1    14.6    +      -       -      +
     77H  ASN*     1.3    82.6    -      -       -      +
     79H  PHE*     1.3    62.4    +      -       -      +
     81H  TYR*     4.0     3.3    +      -       -      +
     82H  SER*     3.5    18.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 79 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75H  GLU      2.9    15.1    +      -       -      +
     76H  TYR*     3.7    20.4    -      +       -      +
     77H  ASN      3.0     0.2    +      -       -      -
     78H  GLU*     1.3    74.7    -      -       -      +
     80H  LEU*     1.3    72.6    +      -       +      +
     82H  SER*     2.5    31.5    +      -       -      -
     84H  ALA*     3.8    13.9    -      -       +      -
     85H  GLY*     3.3    36.4    +      -       -      -
     88H  GLU*     3.6    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 80 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346C  VAL*     3.8    36.3    -      -       +      -
    347C  PRO*     4.2     9.6    -      -       +      -
     76H  TYR*     3.0    55.7    +      -       +      +
     77H  ASN      3.1     3.3    +      -       -      +
     79H  PHE*     1.3    80.9    -      -       +      +
     81H  TYR*     1.3    61.8    +      -       +      +
     82H  SER      3.3     3.1    +      -       -      +
     85H  GLY*     4.4     2.2    -      -       -      -
     86H  ARG*     3.5    12.6    +      -       -      -
     88H  GLU*     3.8    19.3    -      -       +      -
     89H  LEU*     3.4    48.5    -      -       +      +
     92H  VAL*     4.3     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 81 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345C  GLU*     3.7    40.5    -      -       +      +
    346C  VAL      4.6     2.5    +      -       -      -
     62D  MET*     3.2    39.9    -      -       -      +
     63D  THR*     3.7    36.2    -      -       +      +
     64D  ALA      4.8     1.0    +      -       -      -
    125F  GLU*     5.2     0.3    -      -       -      +
     77H  ASN*     3.2    26.0    +      -       -      +
     78H  GLU*     4.2     4.7    -      -       -      +
     79H  PHE      3.2     1.0    -      -       -      -
     80H  LEU*     1.3    78.9    -      -       +      +
     82H  SER*     1.3    60.7    +      -       -      +
     86H  ARG*     6.0     0.2    -      -       -      -
     89H  LEU*     3.8    32.4    -      -       +      +
     93H  ASN*     4.1    13.0    +      -       -      -
----------------------------------------------------------
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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