Contacts of the helix formed by residues 110 - 133 (chain C) in PDB entry 3H1J


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 TYR 110 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107C  SER      2.8    15.6    +      -       -      +
    108C  TYR      3.6     2.2    -      -       -      -
    109C  LEU*     1.3    79.6    -      -       -      +
    111C  LYS*     1.3    62.0    +      -       -      +
    112C  GLU*     3.5     3.4    -      -       -      -
    113C  THR*     3.2    16.5    +      -       -      +
    114C  TRP*     3.0    19.8    +      -       -      +
    201C  LEU*     4.1    16.6    -      -       +      -
    204C  SER*     3.5    29.9    +      -       -      +
    205C  GLY      2.9    29.0    +      -       -      -
    206C  SER      3.7     8.5    +      -       -      -
    207C  ASN*     3.7    19.4    +      -       +      -
    314C  ARG*     3.3    32.9    +      -       -      -
    502C  HEM      4.1     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 111 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108C  TYR      3.8    13.2    -      -       -      +
    109C  LEU*     3.2    16.0    +      -       -      +
    110C  TYR*     1.3    72.8    -      -       -      +
    112C  GLU*     1.3    66.5    +      -       +      +
    114C  TRP*     3.3     2.6    +      -       -      +
    115C  ASN*     2.8    45.3    +      -       -      +
    306C  PRO*     3.8    25.0    +      -       +      +
    307C  PHE*     3.2    42.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 112 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110C  TYR      3.5     1.3    -      -       -      -
    111C  LYS*     1.3    80.6    +      -       +      +
    113C  THR*     1.3    67.2    +      -       -      +
    115C  ASN*     4.3     7.4    -      -       -      +
    116C  THR*     2.9    32.6    +      -       +      +
    200C  PHE*     3.3    48.1    -      -       +      -
      9P  HIS*     6.4     0.2    -      -       -      +
     10P  PRO*     5.4     5.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 113 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110C  TYR*     3.2    20.9    +      -       -      +
    112C  GLU*     1.3    76.8    -      -       -      +
    114C  TRP*     1.3    62.9    +      -       -      +
    116C  THR*     2.9    11.0    +      -       -      -
    117C  GLY      3.0     0.3    +      -       -      -
    197C  HIS*     2.9    45.5    -      -       +      +
    200C  PHE*     3.6     8.7    +      -       -      +
    201C  LEU*     3.3    42.0    +      -       +      -
    204C  SER*     5.1     0.2    +      -       -      -
    502C  HEM      3.7    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 114 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99C  ILE*     4.1    20.4    -      -       +      -
    102C  GLY*     3.9    24.5    -      -       -      -
    103C  LEU*     4.2    13.0    -      -       +      -
    108C  TYR*     3.4    33.0    -      -       +      +
    110C  TYR      3.0    15.8    +      -       -      +
    111C  LYS      3.7     2.9    -      -       -      +
    113C  THR*     1.3    75.8    -      -       -      +
    115C  ASN*     1.3    62.6    +      -       -      +
    117C  GLY*     2.6    22.9    +      -       -      -
    118C  VAL*     2.8    19.9    +      -       +      +
    302C  LEU*     2.9    34.5    +      -       +      -
    303C  PHE*     5.1     0.2    -      -       -      -
    305C  ILE*     4.2    18.8    -      -       +      -
    306C  PRO*     3.6    22.4    -      -       +      +
    502C  HEM      3.6    58.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 115 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111C  LYS*     2.8    41.3    +      -       -      +
    112C  GLU*     4.0     7.2    -      -       -      +
    114C  TRP*     1.3    79.3    -      -       -      +
    116C  THR*     1.3    65.4    +      -       +      +
    118C  VAL*     3.0    18.7    +      -       -      +
    119C  ILE*     3.1    16.8    +      -       +      +
    303C  PHE*     3.4    32.5    -      -       +      +
    306C  PRO*     5.1     2.8    -      -       -      +
    307C  PHE*     5.9     3.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 116 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  GLU*     2.9    23.7    +      -       -      +
    113C  THR      2.9     4.3    +      -       -      -
    115C  ASN*     1.3    74.1    -      -       +      +
    117C  GLY*     1.3    55.9    +      -       -      +
    119C  ILE*     3.1    13.5    +      -       +      +
    120C  LEU*     2.8    31.4    +      -       -      +
    193C  ILE*     4.3    15.7    -      -       +      +
    196C  ILE*     4.1     9.6    -      -       +      -
    197C  HIS*     2.8    38.0    +      -       -      -
    200C  PHE*     4.0    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 117 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113C  THR      3.0     6.5    +      -       -      -
    114C  TRP      2.6    16.1    +      -       -      -
    116C  THR*     1.3    73.1    +      -       -      +
    118C  VAL*     1.3    54.7    +      -       -      -
    120C  LEU*     3.0     5.7    +      -       -      +
    121C  LEU      2.9    24.1    +      -       -      -
    197C  HIS*     3.6     7.6    -      -       -      -
    502C  HEM      2.9    41.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 118 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  TRP*     3.3    21.8    -      -       +      +
    115C  ASN*     3.0    10.5    +      -       -      +
    117C  GLY*     1.3    76.5    -      -       -      +
    119C  ILE*     1.3    58.6    +      -       -      +
    121C  LEU*     3.4     5.0    +      -       +      +
    122C  LEU*     2.9    36.1    +      -       +      +
    299C  VAL*     4.6     7.4    -      -       +      +
    302C  LEU*     4.0    30.7    -      -       +      -
    303C  PHE*     3.6    39.9    -      -       +      -
    502C  HEM      3.6    15.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 119 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115C  ASN      3.1    14.1    +      -       -      +
    116C  THR*     3.1    14.3    +      -       +      +
    118C  VAL*     1.3    74.0    -      -       -      +
    120C  LEU*     1.3    62.0    +      -       -      +
    122C  LEU*     3.3    10.6    +      -       +      +
    123C  THR*     2.7    44.9    +      -       -      +
    193C  ILE*     4.1    23.1    -      -       +      -
    303C  PHE*     4.0    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 120 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95C  ILE*     4.8     0.9    -      -       -      -
    116C  THR      2.8    18.8    +      -       -      +
    117C  GLY      3.0     6.3    +      -       -      +
    119C  ILE*     1.3    76.9    -      -       -      +
    121C  LEU*     1.3    53.8    +      -       -      +
    123C  THR*     3.0     5.3    +      -       -      -
    124C  LEU*     2.6    38.1    +      -       -      +
    190C  ILE*     3.7    25.2    -      -       +      +
    193C  ILE*     4.1    12.1    -      -       +      -
    194C  THR*     3.6    17.5    -      -       -      +
    197C  HIS*     3.9    27.8    -      -       +      +
    502C  HEM      3.5    57.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 121 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  PHE*     5.2     4.0    -      -       +      -
     95C  ILE*     3.5    34.0    -      -       +      +
     96C  PHE*     4.7     5.8    -      -       +      -
     99C  ILE*     3.7    16.4    -      -       +      -
    117C  GLY      2.9     7.0    +      -       -      +
    118C  VAL*     3.7     7.9    -      -       +      +
    120C  LEU*     1.3    74.5    -      -       -      +
    122C  LEU*     1.3    59.3    +      -       -      +
    124C  LEU*     3.1     2.7    +      -       +      +
    125C  MET*     2.9    66.2    +      -       +      +
    299C  VAL*     4.1    11.7    -      -       +      -
    302C  LEU*     3.7    28.7    -      -       +      -
    502C  HEM      3.9    15.1    -      -       +      +
   2007C  PEE      4.9     6.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 122 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118C  VAL*     2.9    28.4    +      -       +      +
    119C  ILE*     3.7    10.5    -      -       +      +
    121C  LEU*     1.3    77.6    -      -       -      +
    123C  THR*     1.3    61.6    +      -       -      +
    125C  MET*     3.3     8.6    +      -       -      +
    126C  ALA*     3.0    20.8    +      -       -      +
    299C  VAL*     3.5    29.4    -      -       +      -
    300C  LEU*     3.9    26.5    -      -       +      -
    303C  PHE*     4.5     6.3    -      -       +      -
   2001C  SMA      3.7    28.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 123 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119C  ILE*     2.7    35.4    +      -       -      +
    120C  LEU*     3.6     4.0    -      -       -      -
    122C  LEU*     1.3    71.2    -      -       -      +
    124C  LEU*     1.3    67.5    +      -       -      +
    126C  ALA*     3.2     4.9    +      -       -      +
    127C  THR*     2.7    33.8    +      -       -      +
    186C  LEU*     4.4    21.3    -      -       +      +
    189C  ALA*     5.1     4.3    -      -       +      -
    190C  ILE*     3.4    28.7    -      -       +      +
    193C  ILE*     4.6     7.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 124 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91C  PHE*     3.5    37.7    -      -       +      +
     92C  PHE*     3.9    25.6    -      -       +      -
     95C  ILE*     3.7    27.6    -      -       +      -
    120C  LEU      2.6    21.6    +      -       -      +
    121C  LEU*     3.4     5.8    -      -       -      +
    123C  THR*     1.3    75.0    -      -       -      +
    125C  MET*     1.3    58.7    +      -       -      +
    127C  THR*     3.4     0.3    -      -       -      -
    128C  ALA*     2.8    28.4    +      -       -      +
    190C  ILE*     3.8    11.2    -      -       +      +
    501C  HEM      3.5    38.4    -      -       +      -
    502C  HEM      6.0     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 125 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  PHE*     4.2    16.4    -      -       +      -
     96C  PHE*     5.1     4.3    -      -       +      -
    121C  LEU*     2.9    49.9    +      -       +      +
    122C  LEU*     3.4     9.9    -      -       -      +
    124C  LEU*     1.3    77.5    -      -       -      +
    126C  ALA*     1.3    64.8    +      -       -      +
    128C  ALA*     3.2     2.4    +      -       -      +
    129C  PHE*     3.0    22.3    +      -       -      +
    274C  TYR      5.6     0.7    -      -       -      +
    275C  PHE*     3.8    17.9    -      -       +      -
    277C  PHE*     4.4    18.6    -      -       +      -
    299C  VAL*     3.9    21.3    -      -       +      -
   2001C  SMA      3.7    48.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 126 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122C  LEU      3.0    13.4    +      -       -      +
    123C  THR*     3.8     7.4    -      -       -      +
    125C  MET*     1.3    75.0    -      -       -      +
    127C  THR*     1.3    64.0    +      -       -      +
    129C  PHE*     3.1     4.8    +      -       -      +
    130C  VAL*     3.1    27.2    +      -       -      +
    186C  LEU*     4.5    11.7    -      -       +      -
   2001C  SMA      3.7    38.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 127 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  THR      2.7    24.0    +      -       -      -
    124C  LEU*     3.4     5.4    -      -       -      -
    126C  ALA*     1.3    76.2    -      -       -      +
    128C  ALA*     1.3    63.1    +      -       -      +
    130C  VAL*     3.1     7.4    -      -       -      +
    131C  GLY      3.0    19.6    +      -       -      -
    183C  HIS*     3.0    28.3    +      -       +      +
    186C  LEU*     3.2    24.2    -      -       +      +
    187C  PRO*     4.1    15.7    -      -       +      -
    190C  ILE*     3.6     8.1    -      -       -      +
    501C  HEM      3.5    31.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 128 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  PHE*     3.6    31.2    -      -       +      -
    124C  LEU      2.8    20.0    +      -       -      +
    125C  MET      3.8     2.5    -      -       -      +
    127C  THR*     1.3    72.6    -      -       -      +
    129C  PHE*     1.3    64.4    +      -       -      +
    131C  GLY      3.9     0.4    -      -       -      -
    132C  TYR*     3.2    20.6    +      -       -      +
    272C  GLU*     4.7     1.1    -      -       -      +
    274C  TYR*     4.2    15.0    +      -       +      +
    275C  PHE*     4.9     0.9    -      -       +      -
    501C  HEM      3.9    29.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 129 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  MET      3.0    12.6    +      -       -      +
    126C  ALA      3.3     6.1    -      -       -      +
    127C  THR      3.1     0.2    -      -       -      -
    128C  ALA*     1.3    74.1    -      -       -      +
    130C  VAL*     1.3    77.1    +      -       +      +
    131C  GLY      3.0     0.7    -      -       -      -
    132C  TYR*     2.9    18.6    +      +       +      +
    133C  VAL*     3.3    15.8    +      -       +      +
    143C  GLY*     4.0     1.1    -      -       -      -
    144C  ALA*     3.7    32.1    -      -       -      -
    147C  ILE*     3.2    50.3    -      -       +      -
    148C  THR*     4.3     2.5    -      -       +      -
    179C  PHE*     3.9    20.2    -      +       -      -
    272C  GLU*     4.9     3.8    -      -       -      -
    275C  PHE*     4.4     8.0    -      +       +      -
   2001C  SMA      3.7    52.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 130 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126C  ALA      3.1    11.0    +      -       -      +
    127C  THR*     3.1    15.7    -      -       -      +
    129C  PHE*     1.3    89.7    -      -       +      +
    131C  GLY*     1.3    66.7    +      -       -      +
    133C  VAL*     3.1    16.7    +      -       -      +
    134C  LEU*     3.5    13.3    -      -       -      +
    179C  PHE*     4.0    35.5    -      -       +      +
    182C  LEU*     4.5    10.3    -      -       +      -
    183C  HIS*     3.5    29.2    -      -       +      +
    186C  LEU*     4.8     3.6    -      -       +      -
   2001C  SMA      4.0    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 131 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127C  THR      3.0    10.0    +      -       -      -
    128C  ALA      4.1     1.1    -      -       -      -
    129C  PHE      3.0     1.4    -      -       -      -
    130C  VAL*     1.3    77.7    -      -       -      +
    132C  TYR*     1.3    61.4    +      -       -      +
    134C  LEU*     3.0    22.8    +      -       -      +
    135C  PRO*     3.7     0.2    -      -       -      +
    183C  HIS*     3.1    37.5    -      -       -      -
    501C  HEM      3.5    18.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 132 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128C  ALA      3.2    14.3    +      -       -      +
    129C  PHE*     2.9    11.5    +      +       -      +
    131C  GLY*     1.3    75.4    -      -       -      +
    133C  VAL*     1.3    57.2    +      -       +      +
    134C  LEU      3.1     0.7    -      -       -      -
    135C  PRO*     3.0    10.3    -      -       -      +
    139C  MET*     3.1    42.6    -      -       +      +
    140C  SER*     2.8    24.0    +      -       -      -
    143C  GLY*     6.0     2.5    -      -       -      -
    253C  ASP*     4.2    12.4    +      -       -      +
    256C  ASN*     3.7    22.0    -      -       +      +
    270C  LYS      5.6     0.2    +      -       -      -
    272C  GLU*     3.5    42.8    -      -       +      +
    274C  TYR*     5.1     0.2    -      -       -      +
    501C  HEM      3.5    33.7    -      -       +      -
   2001C  SMA      4.3     7.3    -      -       -      -
   2010C  UNL      4.5    11.2    -      -       -      -
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Residues in contact with VAL 133 (chain C). Click here for Legend to table.
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                                  Specific contacts
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     Residue       Dist    Surf   HB    Arom    Phob    DC
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    129C  PHE*     3.4    37.5    -      -       +      +
    130C  VAL      3.1     9.7    +      -       -      +
    132C  TYR*     1.3    79.3    -      -       +      +
    134C  LEU*     1.3    61.1    +      -       +      +
    135C  PRO*     3.5     0.4    -      -       -      -
    136C  TRP*     3.1    46.3    +      -       +      -
    140C  SER*     3.6    18.2    -      -       -      +
    143C  GLY*     5.3     0.4    -      -       -      -
    144C  ALA*     3.7    22.7    -      -       +      -
    175C  THR*     6.3     0.2    -      -       +      -
    176C  LEU*     4.1     2.1    -      -       +      +
    179C  PHE*     3.9    20.2    -      -       +      -
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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