Contacts of the helix formed by residues 88 - 117 (chain D) 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 THR 88 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86D  GLY      4.7     1.9    +      -       -      -
     87D  GLU*     1.3    75.1    -      -       -      +
     89D  ALA*     1.3    68.4    +      -       +      +
     90D  GLU*     3.4    29.2    -      -       +      +
     91D  GLY*     3.5    15.3    -      -       -      -
     92D  MET*     2.7    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 89 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30D  VAL*     4.0    20.9    -      -       +      -
     31D  LYS      3.5    26.8    +      -       -      +
     34D  GLN*     5.2    12.1    -      -       +      -
     38D  LEU*     5.2     3.5    -      -       +      +
     42D  PHE*     4.8     0.7    -      -       -      -
     88D  THR*     1.3    76.8    -      -       +      +
     90D  GLU*     1.3    78.5    +      -       -      +
     92D  MET*     3.3     5.8    +      -       -      +
     93D  VAL*     3.1    27.1    +      -       -      +
    143D  PHE*     5.9     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 90 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34D  GLN*     5.4     7.7    -      -       -      +
     88D  THR*     3.4    19.8    -      -       +      +
     89D  ALA*     1.3    93.2    -      -       -      +
     91D  GLY*     1.3    53.4    +      -       -      +
     93D  VAL*     3.2     8.2    +      -       -      +
     94D  GLU*     2.7    42.3    +      -       -      +
    143D  PHE*     5.0    11.8    -      -       -      -
    144D  LEU*     4.4    16.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 91 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87D  GLU*     4.9     6.5    -      -       -      -
     88D  THR*     3.1    23.1    +      -       -      -
     90D  GLU*     1.3    79.8    -      -       -      +
     92D  MET*     1.3    50.5    +      -       -      +
     94D  GLU*     3.4    12.3    -      -       -      +
     95D  ALA*     2.6    37.2    +      -       -      +
     98D  LYS*     5.8     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 92 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25D  ASN*     4.5     1.8    -      -       -      +
     26D  PHE*     3.2    64.0    -      -       +      -
     29D  TYR*     3.8    17.3    -      -       +      +
     30D  VAL*     3.8    41.1    -      -       -      +
     42D  PHE*     3.7     7.6    -      -       +      -
     87D  GLU*     3.8    28.5    -      -       +      +
     88D  THR      2.7    23.1    +      -       -      +
     89D  ALA*     3.5     4.7    -      -       -      +
     91D  GLY*     1.3    71.3    -      -       -      +
     93D  VAL*     1.3    62.4    +      -       -      +
     95D  ALA*     3.0     2.8    +      -       -      +
     96D  ILE*     2.9    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 93 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38D  LEU*     3.9    28.7    -      -       +      -
     42D  PHE*     4.4     6.3    -      -       +      -
     89D  ALA      3.1    16.0    +      -       -      +
     90D  GLU*     3.6     5.2    -      -       -      +
     92D  MET*     1.3    75.6    -      -       -      +
     94D  GLU*     1.3    61.0    +      -       -      +
     96D  ILE*     2.7    24.9    -      -       -      +
     97D  MET*     3.0    14.0    -      -       -      +
    140D  LEU*     3.6    30.3    -      -       +      +
    143D  PHE*     3.9    23.1    -      -       +      -
    144D  LEU*     3.7    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 94 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90D  GLU*     2.7    21.2    +      -       -      +
     91D  GLY*     3.4    11.7    -      -       -      +
     93D  VAL*     1.3    77.9    -      -       -      +
     95D  ALA*     1.3    60.8    +      -       -      +
     97D  MET*     3.5    10.0    -      -       +      +
     98D  LYS*     3.1    48.2    +      -       +      +
    144D  LEU*     4.2    20.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 95 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22D  LYS*     4.8     9.0    +      -       -      +
     26D  PHE*     3.8    20.0    -      -       +      -
     87D  GLU*     5.6     3.6    -      -       +      -
     91D  GLY      2.6    22.2    +      -       -      +
     92D  MET*     3.0     6.4    +      -       -      +
     94D  GLU*     1.3    73.6    -      -       -      +
     96D  ILE*     1.3    62.3    +      -       +      +
     98D  LYS*     3.3    18.0    +      -       -      +
     99D  ASP*     3.1    25.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 96 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19D  LEU*     5.3     4.5    -      -       +      -
     22D  LYS*     5.1     5.6    -      -       +      -
     23D  LEU*     4.1    23.6    -      -       +      -
     26D  PHE*     3.4    31.4    -      -       +      -
     42D  PHE*     4.4     9.9    -      -       +      -
     45D  LEU*     4.9     3.1    -      -       +      -
     92D  MET      2.9    18.4    +      -       -      +
     93D  VAL*     2.7    38.1    -      -       -      +
     95D  ALA*     1.3    70.0    -      -       -      +
     97D  MET*     1.3    62.0    +      -       -      +
     99D  ASP*     3.3    15.7    -      -       +      +
    100D  TYR*     2.8    46.7    +      -       +      -
    140D  LEU*     4.1    19.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 97 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93D  VAL      3.0    21.3    +      -       -      +
     94D  GLU*     3.5    13.7    -      -       +      +
     96D  ILE*     1.3    81.5    -      -       -      +
     98D  LYS*     1.3    71.5    +      -       +      +
    100D  TYR*     3.3     6.3    +      -       -      +
    101D  GLU*     3.1    47.5    +      -       -      +
    137D  ALA*     4.2     9.1    -      -       -      +
    140D  LEU*     4.1    19.7    -      -       +      -
    141D  ARG*     3.8    41.3    -      -       +      +
    144D  LEU*     4.2    14.1    -      -       +      -
    145D  ASN*     6.3     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 98 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94D  GLU*     3.1    39.6    +      -       +      +
     95D  ALA*     3.6    14.7    -      -       -      +
     96D  ILE      3.2     0.2    -      -       -      -
     97D  MET*     1.3    82.7    -      -       +      +
     99D  ASP*     1.3    61.0    +      -       -      +
    101D  GLU*     3.2    16.5    +      -       -      +
    102D  MET*     2.8    50.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 99 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19D  LEU*     4.1    11.0    -      -       +      +
     22D  LYS*     2.8    38.7    +      -       -      +
     80D  ILE*     3.9    33.3    -      -       +      +
     81D  GLN      4.9     2.8    +      -       -      -
     95D  ALA      3.1    16.1    +      -       -      +
     96D  ILE*     3.1    15.6    +      -       -      +
     98D  LYS*     1.3    77.2    -      -       -      +
    100D  TYR*     1.3    64.2    +      -       +      +
    102D  MET*     3.4    21.6    +      -       -      +
    103D  MET*     3.1    23.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 100 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  TRP*     4.3    19.1    -      +       -      -
     19D  LEU*     4.7    12.3    -      -       +      -
     23D  LEU*     4.5     7.4    -      -       +      +
     45D  LEU*     3.0    36.3    +      -       +      +
     48D  GLU*     5.1     1.6    +      -       -      -
     96D  ILE*     2.8    29.3    +      -       +      -
     97D  MET*     3.5     7.9    -      -       -      +
     99D  ASP*     1.3    78.2    -      -       +      +
    101D  GLU*     1.3    58.2    +      -       +      +
    103D  MET*     2.9    10.6    +      -       -      +
    104D  LEU*     2.9    30.5    +      -       +      +
    133D  LEU*     4.1    41.4    -      -       +      +
    136D  HIS*     3.8    36.8    -      +       +      -
    137D  ALA*     4.7     5.4    -      -       +      -
    140D  LEU*     4.2    17.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 101 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97D  MET*     3.1    32.9    +      -       -      +
     98D  LYS*     3.6    18.9    -      -       -      +
    100D  TYR*     1.3    75.4    -      -       -      +
    102D  MET*     1.3    64.2    +      -       +      +
    103D  MET      3.0     0.2    -      -       -      -
    104D  LEU*     3.0    30.7    +      -       +      +
    105D  VAL*     3.5    11.1    +      -       -      +
    137D  ALA*     4.5    10.5    -      -       +      -
    141D  ARG*     2.4    36.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 102 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80D  ILE*     6.0     2.9    -      -       +      -
     98D  LYS*     2.8    40.9    +      -       +      +
     99D  ASP*     3.4    29.8    -      -       -      +
    101D  GLU*     1.3    76.4    -      -       +      +
    103D  MET*     1.3    58.2    +      -       -      +
    104D  LEU      3.4     0.2    -      -       -      -
    105D  VAL*     3.0    29.5    -      -       +      +
    106D  GLU*     3.7     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 103 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  GLN*     2.9    44.4    -      -       -      +
     15D  ASP*     4.5    15.7    -      -       +      +
     16D  TRP*     3.3    38.4    -      -       +      +
     19D  LEU*     4.4    16.6    -      -       -      -
     80D  ILE*     5.2     4.7    -      -       +      -
     99D  ASP      3.1    11.8    +      -       -      +
    100D  TYR*     2.9    14.0    +      -       -      +
    102D  MET*     1.3    77.2    -      -       -      +
    104D  LEU*     1.3    64.2    +      -       -      +
    105D  VAL      3.2     1.8    -      -       -      -
    106D  GLU*     3.3    10.1    +      -       +      +
    107D  LEU*     2.9    37.4    +      -       +      +
    129D  ILE*     4.4     0.9    -      -       +      -
    133D  LEU*     4.0    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 104 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100D  TYR      2.9    16.3    +      -       -      +
    101D  GLU*     3.0    24.0    +      -       +      +
    103D  MET*     1.3    78.4    -      -       -      +
    105D  VAL*     1.3    62.4    +      -       +      +
    107D  LEU*     3.1     8.4    +      -       +      +
    108D  LYS*     2.9    27.1    +      -       -      +
    130D  TYR*     3.3    57.0    -      -       +      +
    133D  LEU*     4.0    15.5    -      -       +      -
    134D  GLU*     3.8    27.1    -      -       +      +
    137D  ALA*     5.4     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 105 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101D  GLU      3.7    12.1    -      -       -      +
    102D  MET*     3.0    23.1    -      -       +      +
    104D  LEU*     1.3    78.3    -      -       +      +
    106D  GLU*     1.3    82.4    +      -       +      +
    107D  LEU      3.1     0.3    +      -       -      -
    108D  LYS*     3.1    13.1    +      -       +      +
    109D  LYS*     3.0    39.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 106 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8D  VAL*     4.8     5.2    -      -       -      +
     11D  LYS*     2.8    46.7    -      -       -      +
     12D  GLN*     5.4     5.7    +      -       -      +
     15D  ASP*     3.5     9.0    -      -       -      +
     79D  SER*     3.5     7.3    +      -       -      -
    102D  MET      4.0    11.6    -      -       -      +
    103D  MET*     3.3    15.6    +      -       +      +
    105D  VAL*     1.3    86.6    -      -       +      +
    107D  LEU*     1.3    56.5    +      -       -      +
    109D  LYS*     3.6    14.0    -      -       +      +
    110D  GLY*     2.9    23.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 107 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8D  VAL*     6.1     0.4    -      -       +      -
     12D  GLN*     3.9    23.1    -      -       +      +
    103D  MET*     2.9    39.7    +      -       +      +
    104D  LEU*     3.3    10.5    -      -       -      +
    106D  GLU*     1.3    75.2    -      -       -      +
    108D  LYS*     1.3    59.4    +      -       -      +
    110D  GLY*     2.7    20.4    +      -       -      +
    111D  MET*     2.8    22.0    +      -       +      +
    126D  LEU*     3.6    39.2    -      -       +      +
    129D  ILE*     4.4     5.4    -      -       +      -
    130D  TYR*     3.9    35.2    -      -       +      +
    133D  LEU*     4.3     8.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 108 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104D  LEU*     2.9    13.0    +      -       +      +
    105D  VAL*     3.6    11.9    -      -       +      +
    107D  LEU*     1.3    73.3    -      -       -      +
    109D  LYS*     1.3    64.6    +      -       +      +
    111D  MET*     3.1    17.0    +      -       +      +
    112D  GLU*     3.0    24.3    +      -       -      +
    130D  TYR*     3.2    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 109 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105D  VAL*     3.0    31.9    +      -       -      +
    106D  GLU*     3.6    14.4    -      -       +      +
    108D  LYS*     1.3    76.4    -      -       +      +
    110D  GLY*     1.3    60.4    +      -       -      +
    112D  GLU*     3.1    18.9    +      -       -      +
    113D  ILE*     2.8    22.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 110 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5D  VAL*     5.5     0.5    -      -       -      +
      8D  VAL*     3.7    24.2    -      -       -      +
    106D  GLU      2.9    13.9    +      -       -      -
    107D  LEU      2.7     9.4    +      -       -      -
    109D  LYS*     1.3    76.6    -      -       -      +
    111D  MET*     1.3    54.8    +      -       -      -
    113D  ILE*     3.4    10.3    -      -       -      +
    114D  ALA*     3.1    27.4    +      -       -      +
    126D  LEU*     3.8    11.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 111 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107D  LEU*     2.8    17.2    +      -       +      +
    108D  LYS*     3.6    31.4    -      -       +      +
    110D  GLY*     1.3    70.2    -      -       -      +
    112D  GLU*     1.3    61.0    +      -       -      +
    114D  ALA*     3.5     4.6    -      -       -      +
    115D  GLN*     2.8    43.1    +      -       -      +
    123D  SER*     3.5    19.5    -      -       -      +
    126D  LEU*     3.8    17.7    -      -       +      -
    127D  LEU*     3.8    31.2    -      -       +      +
    130D  TYR*     3.7    31.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 112 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108D  LYS      3.0    13.0    +      -       -      +
    109D  LYS*     3.1    15.7    +      -       -      +
    111D  MET*     1.3    78.7    -      -       -      +
    113D  ILE*     1.3    58.5    +      -       -      +
    115D  GLN*     3.1    14.0    +      -       -      +
    116D  ASN*     2.8    54.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 113 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4D  GLN*     4.1     7.6    -      -       -      +
      5D  VAL*     3.4    39.9    -      -       +      +
      8D  VAL*     3.7    17.9    -      -       +      -
    109D  LYS      2.8    20.2    -      -       -      +
    110D  GLY*     3.4    13.9    -      -       -      +
    112D  GLU*     1.3    71.7    -      -       -      +
    114D  ALA*     1.3    63.2    +      -       -      +
    116D  ASN*     3.6    10.1    +      -       -      +
    117D  SER*     2.8    43.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 114 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5D  VAL*     4.2    12.1    -      -       +      -
    110D  GLY      3.1    21.4    +      -       -      +
    111D  MET*     3.5     6.7    -      -       -      +
    113D  ILE*     1.3    81.4    -      -       -      +
    115D  GLN*     1.3    60.9    +      -       -      +
    117D  SER      3.2     7.1    +      -       -      -
    118D  ASP      3.3     0.2    +      -       -      -
    119D  ASP*     2.8    44.0    +      -       -      +
    122D  THR*     4.5     9.4    -      -       +      -
    123D  SER*     4.0    16.8    -      -       -      +
    126D  LEU*     5.2     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 115 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111D  MET*     2.8    32.4    +      -       -      +
    112D  GLU*     3.4    15.4    +      -       -      +
    114D  ALA*     1.3    79.0    -      -       -      +
    116D  ASN*     1.3    61.4    +      -       -      +
    118D  ASP*     3.0    19.2    +      -       -      -
    119D  ASP      4.4     5.4    -      -       -      +
    120D  GLU*     4.9    10.7    -      -       +      +
    123D  SER*     3.9    19.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 116 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112D  GLU*     2.8    43.5    +      -       -      +
    113D  ILE*     3.6     9.8    +      -       -      +
    115D  GLN*     1.3    80.9    -      -       -      +
    117D  SER*     1.3    59.0    +      -       -      +
    118D  ASP*     3.1     3.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 117 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4D  GLN*     4.5     8.4    +      -       -      -
      5D  VAL*     3.8    23.8    -      -       -      +
    113D  ILE*     2.8    24.9    +      -       -      +
    114D  ALA      3.2     1.5    +      -       -      -
    115D  GLN      3.2     0.2    -      -       -      -
    116D  ASN*     1.3    76.4    -      -       -      +
    118D  ASP*     1.3    71.3    +      -       -      +
    119D  ASP*     3.4     4.3    +      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il