Contacts of the helix formed by residues 119 - 145 (chain C) in PDB entry 1JI5


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 ASP 119 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5C  VAL*     4.1    14.9    -      -       +      +
     59C  ARG*     3.3    14.8    +      -       -      -
     63C  ILE*     4.4    10.2    -      -       -      +
    114C  ALA*     2.8    30.4    +      -       -      +
    115C  GLN      4.2     1.0    +      -       -      -
    117C  SER      4.1     5.2    -      -       -      +
    118C  ASP*     1.3    75.9    -      -       -      +
    120C  GLU*     1.3    61.1    +      -       -      +
    121C  MET*     3.3     8.5    -      -       -      +
    122C  THR*     2.6    38.3    +      -       -      -
    123C  SER      3.3    10.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 120 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115C  GLN*     4.9    12.7    -      -       +      +
    118C  ASP*     4.0     1.7    -      -       -      +
    119C  ASP*     1.3    72.2    -      -       -      +
    121C  MET*     1.3    76.2    +      -       +      +
    123C  SER*     3.3    11.8    -      -       -      -
    124C  ASP*     2.7    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 121 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59C  ARG*     3.0    28.0    -      -       -      +
    118C  ASP      5.8     0.7    -      -       -      +
    119C  ASP*     3.0     6.9    -      -       -      +
    120C  GLU*     1.3   103.1    -      -       +      +
    122C  THR*     1.3    65.5    +      -       -      +
    124C  ASP*     2.8    18.2    +      -       -      +
    125C  LEU*     3.0    11.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 122 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5C  VAL*     3.8    12.9    -      -       +      +
      9C  LEU*     3.5    40.9    -      -       +      +
     59C  ARG*     3.0    26.5    +      -       +      +
     63C  ILE*     4.4     2.1    -      -       -      +
    114C  ALA*     4.6     1.6    -      -       +      -
    119C  ASP*     2.6    30.7    +      -       -      -
    121C  MET*     1.3    78.1    -      -       -      +
    123C  SER*     1.3    63.3    +      -       -      +
    125C  LEU*     3.2     6.1    +      -       +      +
    126C  LEU*     2.9    30.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 123 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120B  GLU*     4.4     4.3    +      -       -      -
    111C  MET*     3.3    29.1    -      -       -      +
    114C  ALA*     4.0    15.8    -      -       -      +
    115C  GLN*     3.9    16.6    +      -       -      +
    119C  ASP      3.3     5.9    +      -       -      -
    120C  GLU*     3.2    22.2    +      -       -      -
    121C  MET      3.0     0.8    -      -       -      -
    122C  THR*     1.3    78.9    -      -       -      +
    124C  ASP*     1.3    52.0    +      -       -      +
    126C  LEU*     3.2     4.1    +      -       -      +
    127C  LEU*     2.7    35.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 124 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124B  ASP*     4.2    14.9    -      -       -      +
    120C  GLU      2.7    17.4    +      -       -      +
    121C  MET*     3.2    11.7    -      -       -      +
    123C  SER*     1.3    73.8    -      -       -      +
    125C  LEU*     1.3    64.5    +      -       -      +
    127C  LEU*     3.1    17.0    +      -       -      +
    128C  GLY*     3.1    18.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 125 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9C  LEU*     5.6     0.4    -      -       +      -
     55C  GLU*     4.4    25.4    -      -       +      +
     56C  ILE*     4.3    18.8    -      -       +      +
     59C  ARG*     3.7    37.0    -      -       +      -
    121C  MET      3.0    10.3    +      -       -      +
    122C  THR*     3.4     9.9    -      -       -      +
    124C  ASP*     1.3    80.7    +      -       -      +
    126C  LEU*     1.3    74.6    +      -       +      +
    128C  GLY*     3.2     9.0    +      -       -      -
    129C  ILE*     3.5    19.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 126 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5C  VAL*     6.0     0.4    -      -       +      -
      8C  VAL*     4.3    13.2    -      -       +      -
      9C  LEU*     3.7    22.2    -      -       +      -
     12C  GLN*     5.4     5.4    -      -       +      -
     56C  ILE*     5.8     1.8    -      -       +      -
    107C  LEU*     3.7    24.6    -      -       +      +
    110C  GLY*     3.8    36.1    -      -       -      +
    111C  MET*     3.9    12.8    -      -       +      +
    122C  THR*     2.9    28.1    +      -       +      +
    123C  SER      3.5     7.0    -      -       -      +
    125C  LEU*     1.3    84.7    -      -       +      +
    127C  LEU*     1.3    66.9    +      -       -      +
    129C  ILE*     3.2    16.2    +      -       +      +
    130C  TYR*     3.0    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 127 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120B  GLU*     4.3    14.8    -      -       -      +
    121B  MET*     3.1    39.7    -      -       +      -
    124B  ASP*     3.9    35.4    -      -       +      +
    111C  MET*     3.9    11.6    -      -       -      -
    123C  SER*     2.7    21.4    +      -       -      +
    124C  ASP*     3.3    20.0    -      -       -      +
    126C  LEU*     1.3    72.4    -      -       -      +
    128C  GLY*     1.3    64.7    +      -       -      +
    130C  TYR*     3.1     5.2    -      -       -      +
    131C  THR*     3.0    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 128 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124C  ASP      3.1    11.8    +      -       -      -
    125C  LEU      3.2     5.3    +      -       -      -
    127C  LEU*     1.3    79.5    -      -       -      +
    129C  ILE*     1.3    60.6    -      -       -      +
    131C  THR*     3.1     9.4    +      -       -      -
    132C  GLU*     2.9    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 129 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12C  GLN*     3.8    17.3    -      -       -      +
     16C  TRP*     3.6    29.8    -      -       +      +
     52C  HIS*     4.0    24.5    -      -       +      +
     55C  GLU*     5.5     0.9    -      -       -      +
     56C  ILE*     4.1    22.2    -      -       +      -
    103C  MET*     4.4     0.7    -      -       +      -
    107C  LEU*     4.3    12.1    -      -       +      -
    125C  LEU*     3.5    24.0    +      -       +      +
    126C  LEU*     3.2    17.7    +      -       +      +
    128C  GLY*     1.3    72.3    -      -       -      +
    130C  TYR*     1.3    58.0    +      -       -      +
    132C  GLU*     3.1     7.1    +      -       -      +
    133C  LEU*     2.8    41.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 130 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59B  ARG*     5.1     0.2    -      -       -      -
    121B  MET*     3.4    29.8    -      -       +      -
    104C  LEU*     3.4    41.7    -      -       +      +
    107C  LEU*     3.9     8.9    -      -       +      +
    108C  LYS*     3.2    44.3    +      -       +      +
    111C  MET*     3.7    17.0    -      -       +      -
    126C  LEU      3.0    12.1    +      -       -      +
    127C  LEU*     3.1    14.8    -      -       -      +
    129C  ILE*     1.3    77.7    -      -       -      +
    131C  THR*     1.3    63.3    +      -       -      +
    134C  GLU*     3.0    62.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 131 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59B  ARG*     4.9    13.1    +      -       -      +
    121B  MET*     3.8    13.4    +      -       +      +
    124B  ASP*     5.8     0.7    +      -       -      +
    127C  LEU*     3.0    24.8    +      -       -      +
    128C  GLY*     3.4    10.4    -      -       -      -
    130C  TYR*     1.3    82.0    -      -       -      +
    132C  GLU*     1.3    66.0    +      -       -      +
    134C  GLU*     3.4     7.2    +      -       -      +
    135C  LYS*     3.3    19.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 132 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  TRP*     4.6     0.5    -      -       -      -
     48C  GLU*     3.7    27.1    -      -       -      +
     52C  HIS*     2.5    40.5    +      -       -      -
    128C  GLY      2.9    13.0    +      -       -      +
    129C  ILE*     3.1     8.7    +      -       -      +
    131C  THR*     1.3    79.7    -      -       -      +
    133C  LEU*     1.3    77.2    +      -       -      +
    135C  LYS*     3.3     7.3    +      -       -      +
    136C  HIS*     3.2    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 133 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16C  TRP*     3.7    21.1    -      -       +      -
    100C  TYR*     4.0    49.2    -      -       +      +
    103C  MET*     4.1    31.0    -      -       +      -
    104C  LEU*     4.0    10.5    -      -       +      -
    107C  LEU*     4.4     7.2    -      -       +      -
    129C  ILE*     2.8    25.9    +      -       +      +
    130C  TYR      4.0     2.9    -      -       -      +
    132C  GLU*     1.3    94.3    -      -       +      +
    134C  GLU*     1.3    53.3    +      -       -      +
    136C  HIS*     3.0     8.7    +      -       +      +
    137C  ALA*     2.7    35.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 134 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59B  ARG*     2.4    47.0    +      -       -      +
     62B  ALA*     3.8    21.5    -      -       +      +
     63B  ILE*     4.4     7.0    -      -       -      +
    121B  MET*     4.2     0.5    -      -       -      +
    104C  LEU*     3.8    16.8    -      -       +      +
    130C  TYR*     3.0    52.8    +      -       +      +
    131C  THR*     3.6     5.3    -      -       -      +
    133C  LEU*     1.3    76.1    -      -       -      +
    135C  LYS*     1.3    62.8    +      -       -      +
    137C  ALA*     3.5     7.7    +      -       -      +
    138C  TRP*     3.2    21.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 135 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  GLU*     3.4    32.5    +      -       +      +
     62B  ALA*     4.1    10.7    -      -       +      +
    131C  THR      3.3     8.3    +      -       -      +
    132C  GLU*     3.3    11.1    +      -       -      +
    133C  LEU      3.2     0.2    -      -       -      -
    134C  GLU*     1.3    74.6    -      -       -      +
    136C  HIS*     1.3    68.6    +      -       +      +
    138C  TRP*     3.0    31.6    +      -       +      +
    139C  MET*     3.0    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 136 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41C  LYS*     4.2     7.5    +      -       -      -
     44C  GLU*     4.1    12.1    -      -       -      -
     45C  LEU*     3.4    22.9    -      -       +      +
     48C  GLU*     2.7    34.1    +      -       -      -
    100C  TYR*     3.8    28.9    -      +       +      -
    132C  GLU*     3.2    29.2    +      -       +      +
    133C  LEU*     3.0     9.8    +      -       +      +
    135C  LYS*     1.3    80.3    -      -       +      +
    137C  ALA*     1.3    53.5    +      -       -      +
    139C  MET*     3.0    21.8    +      -       +      +
    140C  LEU*     2.6    43.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 137 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97C  MET*     4.1     7.9    -      -       +      +
    100C  TYR*     4.7     7.8    -      -       +      -
    101C  GLU*     4.5    14.6    -      -       +      +
    104C  LEU*     5.5     4.5    -      -       +      -
    133C  LEU      2.7    18.6    +      -       -      +
    134C  GLU*     3.6     9.4    -      -       -      +
    136C  HIS*     1.3    72.3    -      -       -      +
    138C  TRP*     1.3    53.8    +      -       -      +
    140C  LEU*     3.8     7.0    -      -       -      +
    141C  ARG*     2.7    58.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 138 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     28A  TRP*     4.4     8.4    +      -       -      -
     30A  VAL      5.7     0.2    +      -       -      -
     31A  LYS*     5.2     5.9    -      -       -      +
     35A  PHE*     4.0    15.8    -      +       -      -
     39A  HIS*     3.9    13.0    -      +       -      -
     58B  GLU*     3.4    49.6    -      -       +      -
     61B  LEU*     3.3    47.5    -      -       +      +
     62B  ALA*     4.0    13.5    -      -       +      +
    134C  GLU      3.2     9.4    +      -       -      +
    135C  LYS*     3.0    40.0    +      -       +      +
    137C  ALA*     1.3    79.3    -      -       -      +
    139C  MET*     1.3    68.8    +      -       +      +
    141C  ARG*     3.3    15.6    +      -       -      +
    142C  ALA*     2.7    45.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 139 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  PHE*     3.5    33.9    -      -       +      -
     36A  PHE*     3.7    14.0    -      -       +      -
     39A  HIS*     4.9     9.4    -      -       -      -
     41C  LYS*     3.1    32.5    -      -       -      +
    135C  LYS*     3.0    22.4    +      -       +      +
    136C  HIS*     3.0    27.7    +      -       +      +
    138C  TRP*     1.3    96.8    -      -       +      +
    140C  LEU*     1.3    68.1    +      -       +      +
    142C  ALA*     3.3     1.9    +      -       -      +
    143C  PHE*     3.0    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 140 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  PHE*     4.0    23.1    -      -       +      -
     38C  LEU*     6.0     1.8    -      -       +      -
     41C  LYS*     5.1    11.9    -      -       +      -
     42C  PHE*     6.3     1.8    -      -       +      -
     45C  LEU*     5.1     8.1    -      -       +      -
     93C  VAL*     3.6    28.6    -      -       +      +
     96C  ILE*     4.2    23.3    -      -       +      -
     97C  MET*     4.1    13.9    -      -       +      -
    100C  TYR*     4.3    18.2    -      -       +      -
    136C  HIS*     2.6    32.0    +      -       +      +
    137C  ALA      3.8     3.8    -      -       -      +
    139C  MET*     1.3    73.0    -      -       +      +
    141C  ARG*     1.3    63.3    +      -       -      +
    143C  PHE*     3.0    19.7    -      -       -      +
    144C  LEU*     3.2    14.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 141 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62B  ALA      5.6     2.8    +      -       -      -
     97C  MET*     3.8    18.3    -      -       +      +
    101C  GLU*     2.4    34.2    +      -       -      +
    137C  ALA*     2.7    44.3    +      -       -      +
    138C  TRP*     3.4    17.8    -      -       -      +
    140C  LEU*     1.3    73.3    -      -       -      +
    142C  ALA*     1.3    57.4    +      -       -      +
    144C  LEU*     2.9    20.5    +      -       -      +
    145C  ASN*     2.9    45.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 142 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  VAL      4.2     7.6    -      -       -      +
     31A  LYS*     3.5    17.5    -      -       +      +
     32A  GLY      2.8    25.0    +      -       -      -
     35A  PHE*     3.9    25.1    -      -       +      -
    138C  TRP*     2.7    30.7    +      -       +      +
    139C  MET      3.3     4.5    +      -       -      +
    141C  ARG*     1.3    74.7    -      -       -      +
    143C  PHE*     1.3    58.3    +      -       -      +
    144C  LEU      3.4     0.2    +      -       -      -
    145C  ASN*     3.5    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 143 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  GLY*     3.0    36.2    -      -       -      +
     33A  PRO*     3.3    34.9    -      -       +      +
     35A  PHE*     4.1     5.6    -      -       +      -
     36A  PHE*     4.0    27.8    -      +       +      -
     34C  GLN*     3.6    15.3    -      -       +      -
     37C  THR*     5.1     0.7    -      -       -      -
     38C  LEU*     3.5    27.6    -      -       +      -
     89C  ALA*     5.9     1.1    -      -       +      -
     90C  GLU*     5.1    10.3    -      -       -      -
     93C  VAL*     3.9    28.5    -      -       +      -
    139C  MET      3.0    13.1    +      -       -      +
    140C  LEU*     3.0    15.0    -      -       -      +
    141C  ARG      3.0     0.2    -      -       -      -
    142C  ALA*     1.3    77.7    -      -       -      +
    144C  LEU*     1.3    77.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 144 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32A  GLY*     4.8     2.4    -      -       -      -
     33A  PRO*     5.8     0.3    -      -       -      +
     90C  GLU*     4.4    22.2    -      -       +      +
     93C  VAL*     3.7    22.7    -      -       +      -
     94C  GLU*     4.2    24.2    -      -       +      +
     97C  MET*     4.3    14.4    -      -       +      -
    140C  LEU      3.2    22.6    +      -       -      +
    141C  ARG*     2.9     5.5    +      -       -      +
    143C  PHE*     1.3   102.2    -      -       +      +
    145C  ASN*     1.3    79.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 145 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31A  LYS*     4.0    21.1    -      -       +      +
     32A  GLY*     4.0     4.0    +      -       -      -
     97C  MET*     6.3     0.4    -      -       -      +
    141C  ARG*     2.9    42.4    +      -       +      +
    142C  ALA*     3.5    16.0    -      -       -      +
    144C  LEU*     1.3    86.4    -      -       -      +
----------------------------------------------------------
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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