Contacts of the helix formed by residues 95 - 119 (chain D) in PDB entry 5DIR


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 GLU 95 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90C  ARG*     4.8     9.2    +      -       -      -
     91D  LEU*     3.7    24.0    -      -       +      +
     92D  LYS*     3.3    37.6    +      -       +      +
     93D  LYS      3.3     0.8    +      -       -      -
     94D  GLY*     1.3    78.7    -      -       -      +
     96D  THR*     1.3    58.4    +      -       -      +
     97D  TRP*     3.3     3.4    -      -       -      -
     98D  LEU*     3.3    28.9    +      -       +      +
     99D  ALA*     2.9    26.3    +      -       -      +
    156D  ASP*     4.7     7.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 96 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  TRP*     3.5    32.3    -      -       +      +
     93D  LYS*     5.7     0.4    -      -       -      -
     94D  GLY*     3.2    24.1    +      -       -      +
     95D  GLU*     1.3    74.4    -      -       -      +
     97D  TRP*     1.3    69.7    +      -       -      +
     99D  ALA*     3.1     9.0    +      -       -      +
    100D  ILE*     3.0    33.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 97 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95D  GLU      3.3     0.8    -      -       -      -
     96D  THR*     1.3    83.5    +      -       -      +
     98D  LEU*     1.3    62.2    +      -       -      +
    100D  ILE*     3.6     6.6    +      -       +      -
    101D  ALA*     3.5     4.9    +      -       -      +
    152D  MET*     2.9    87.9    -      -       +      +
    155D  LEU*     3.9    22.2    -      -       +      -
    156D  ASP*     4.0    23.1    -      -       +      -
    159D  ARG*     3.8    37.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 98 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90C  ARG*     5.3     5.2    -      -       -      +
     87D  TRP*     4.4    19.7    -      -       +      +
     91D  LEU*     3.9    20.4    -      -       +      -
     95D  GLU*     3.3    38.0    +      -       +      +
     96D  THR      3.2     0.2    -      -       -      -
     97D  TRP*     1.3    80.4    -      -       -      +
     99D  ALA*     1.3    63.3    +      -       -      +
    101D  ALA*     3.2    12.5    +      -       +      +
    102D  LEU*     3.3    30.6    +      -       +      +
    153D  LEU*     4.9    11.7    -      -       +      +
    156D  ASP*     3.3    43.3    +      -       +      +
    157D  MET*     6.5     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 99 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  TRP*     3.9    34.2    -      -       +      +
     88D  LEU*     3.8    11.6    -      -       +      +
     91D  LEU*     3.9    17.5    -      -       +      -
     95D  GLU      2.9    14.1    +      -       -      +
     96D  THR*     3.4    14.6    -      -       -      +
     98D  LEU*     1.3    77.8    -      -       -      +
    100D  ILE*     1.3    61.5    +      -       -      +
    102D  LEU      3.4     1.6    +      -       -      -
    103D  ALA*     3.1    23.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 100 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  TRP*     4.3    14.4    -      -       +      -
     15D  ILE*     3.9    29.6    -      -       +      -
     96D  THR*     3.0    23.7    +      -       -      +
     97D  TRP*     3.8    11.9    -      -       +      +
     98D  LEU      3.3     0.2    -      -       -      -
     99D  ALA*     1.3    74.4    -      -       -      +
    101D  ALA*     1.3    58.5    +      -       -      +
    103D  ALA*     3.3     2.5    +      -       -      +
    104D  LEU*     2.9    45.4    +      -       +      +
    152D  MET*     3.8    16.6    -      -       +      -
    201D  OLC      4.3    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 101 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97D  TRP      3.5     6.5    +      -       -      +
     98D  LEU*     3.2    13.5    +      -       +      +
    100D  ILE*     1.3    80.3    -      -       -      +
    102D  LEU*     1.3    65.2    +      -       +      +
    104D  LEU*     3.5     0.8    +      -       -      -
    105D  VAL*     3.2    28.6    +      -       -      +
    149D  GLY*     3.5    19.2    -      -       -      +
    152D  MET*     3.5    33.6    -      -       +      +
    153D  LEU*     3.9    11.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 102 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84D  LEU*     3.7    28.7    -      -       +      +
     87D  TRP*     3.9    30.7    -      -       +      +
     88D  LEU*     4.1    36.1    -      -       +      +
     91D  LEU*     4.5     7.9    -      -       +      -
     98D  LEU*     3.3    27.9    +      -       +      +
     99D  ALA      3.9     5.4    -      -       -      +
    100D  ILE      3.3     0.6    -      -       -      -
    101D  ALA*     1.3    75.7    -      -       +      +
    103D  ALA*     1.3    54.6    -      -       -      +
    105D  VAL*     3.1     5.0    +      -       -      +
    106D  LEU*     2.8    36.8    +      -       -      +
    153D  LEU*     4.0    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 103 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12D  TRP*     3.8    22.7    -      -       +      +
     15D  ILE*     3.8    16.3    -      -       +      +
     16D  THR*     3.0    27.6    +      -       -      +
     88D  LEU*     4.8     7.7    -      -       +      +
     99D  ALA      3.1    15.1    +      -       -      +
    100D  ILE*     3.7     5.8    -      -       -      +
    102D  LEU*     1.3    77.7    -      -       -      +
    104D  LEU*     1.3    58.1    +      -       -      +
    106D  LEU*     4.3     1.6    -      -       -      -
    107D  GLY*     2.9    26.5    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     15D  ILE*     3.8    16.2    -      -       +      -
     19D  VAL*     3.9    16.4    -      -       +      -
    100D  ILE*     2.9    27.4    +      -       +      +
    101D  ALA      3.6     4.7    -      -       -      +
    102D  LEU      3.2     0.2    -      -       -      -
    103D  ALA*     1.3    77.8    -      -       -      +
    105D  VAL*     1.3    57.2    +      -       -      +
    107D  GLY*     3.5     0.5    +      -       -      -
    108D  GLY*     3.0    24.3    +      -       -      -
    145D  ALA*     3.4    31.3    -      -       +      +
    148D  VAL*     3.7    30.5    -      -       +      -
    149D  GLY*     4.1     4.5    -      -       -      +
    152D  MET*     3.9    16.4    -      -       -      -
    201D  OLC      3.8    31.0    -      -       +      -
    202D  OLC      5.1     0.2    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
     80D  VAL*     6.0     0.2    -      -       +      -
     84D  LEU*     3.6    23.6    -      -       +      -
    101D  ALA      3.2    15.4    +      -       -      +
    102D  LEU*     3.1     8.8    +      -       -      +
    104D  LEU*     1.3    75.7    -      -       -      +
    106D  LEU*     1.3    58.4    +      -       -      +
    109D  ALA*     2.8    27.9    +      -       -      +
    146D  ILE*     3.8    25.7    -      -       +      +
    149D  GLY*     3.8    22.4    -      -       -      +
    150D  ALA*     4.0     2.7    -      -       +      +
    153D  LEU*     5.9     5.8    -      -       +      -
    201G  MLE      4.0    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 106 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13D  LEU*     4.0    15.3    -      -       +      -
     16D  THR*     3.7    25.6    -      -       +      +
     81D  SER*     3.5    48.0    -      -       -      +
     84D  LEU*     4.2    12.3    -      -       +      +
     85D  VAL*     3.8    24.2    -      -       +      +
     88D  LEU*     5.0     5.8    -      -       +      -
    102D  LEU      2.8    16.6    +      -       -      +
    103D  ALA*     3.7     4.3    -      -       -      +
    105D  VAL*     1.3    78.2    -      -       -      +
    107D  GLY*     1.3    56.1    +      -       -      +
    109D  ALA*     3.3     3.7    +      -       -      +
    110D  LEU*     2.9    44.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 107 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  THR*     3.6    28.0    -      -       -      +
     19D  VAL*     3.7    12.2    -      -       -      +
     20D  PHE*     3.8    12.4    -      -       -      +
    103D  ALA      2.9    16.1    +      -       -      -
    104D  LEU      3.9     0.7    -      -       -      -
    106D  LEU*     1.3    76.6    -      -       -      +
    108D  GLY*     1.3    57.9    +      -       -      +
    110D  LEU*     3.6     1.4    +      -       -      -
    111D  GLY*     3.1    23.4    +      -       -      -
    142D  ALA*     5.1     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 108 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19D  VAL*     3.7     4.9    -      -       -      +
    104D  LEU      3.0    11.7    +      -       -      -
    107D  GLY*     1.3    74.8    -      -       -      +
    109D  ALA*     1.3    62.9    +      -       -      +
    111D  GLY      3.2     8.8    +      -       -      -
    112D  ASN*     3.2    12.0    +      -       -      -
    142D  ALA*     3.2    39.2    -      -       -      +
    146D  ILE*     3.5    14.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 109 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77D  ALA*     4.3     5.1    -      -       +      +
     80D  VAL*     4.8     2.5    -      -       +      -
     81D  SER*     3.9    15.9    -      -       -      +
     84D  LEU*     5.6     0.7    -      -       +      -
    105D  VAL*     2.8    21.0    +      -       +      +
    106D  LEU*     3.3     6.0    +      -       -      +
    108D  GLY*     1.3    77.4    -      -       -      +
    110D  LEU*     1.3    57.9    +      -       -      +
    112D  ASN*     3.4     2.4    +      -       -      +
    113D  LEU*     2.9    27.9    +      -       -      +
    146D  ILE*     3.6     7.5    -      -       -      +
    201G  MLE      3.8    33.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 110 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16D  THR*     4.4    12.1    -      -       +      -
     20D  PHE*     3.3    25.6    -      -       +      -
     81D  SER*     3.5    26.7    -      -       -      +
    106D  LEU*     2.9    35.6    +      -       +      +
    107D  GLY*     4.1     2.0    -      -       -      +
    109D  ALA*     1.3    74.3    -      -       -      +
    111D  GLY*     1.3    59.9    +      -       -      +
    113D  LEU*     3.6    23.0    -      -       +      +
    114D  TYR*     2.9    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 111 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20D  PHE*     3.5    10.7    -      -       -      -
     23D  ASP*     3.4    22.4    -      -       -      -
     24D  GLN*     2.5    29.9    +      -       -      -
     27D  LYS*     3.4     3.7    +      -       -      -
    107D  GLY      3.1    13.9    +      -       -      -
    108D  GLY      3.2     5.3    +      -       -      -
    110D  LEU*     1.3    79.2    -      -       -      +
    112D  ASN*     1.3    59.0    +      -       -      +
    115D  ASP      3.5     6.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 112 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27D  LYS*     3.0    22.5    +      -       -      +
    108D  GLY      3.2     8.2    +      -       -      +
    109D  ALA      4.1     2.0    -      -       -      +
    111D  GLY*     1.3    73.7    -      -       -      +
    113D  LEU*     1.3    60.6    +      -       -      +
    115D  ASP*     3.2     6.3    +      -       -      +
    116D  ARG*     2.9    43.5    +      -       -      +
    122D  VAL*     3.4    11.9    -      -       +      +
    140D  ASN*     3.2    11.3    +      -       -      -
    142D  ALA*     3.3    12.8    -      -       -      +
    143D  ASP*     2.9    24.7    +      -       -      -
    146D  ILE*     4.3     2.4    -      -       -      +
    201G  MLE      2.8    29.1    +      -       -      +
    202G  IIL      3.9     0.2    -      -       -      -
    203G  SER      3.7     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 113 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74D  ALA*     3.7    35.2    -      -       +      +
     77D  ALA*     4.1    12.8    -      -       +      +
     78D  ILE*     3.8    21.8    -      -       +      +
    109D  ALA      2.9    18.4    +      -       -      +
    110D  LEU*     3.3    27.8    +      -       +      +
    112D  ASN*     1.3    74.0    -      -       -      +
    114D  TYR*     1.3    66.2    +      -       -      +
    116D  ARG*     3.2     6.9    +      -       +      +
    117D  MET*     3.0    54.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 114 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20D  PHE*     3.8    24.5    -      +       +      -
     24D  GLN*     3.5    33.4    -      -       +      +
    110D  LEU      2.9    17.3    +      -       -      +
    112D  ASN      3.4     0.2    -      -       -      -
    113D  LEU*     1.3    75.7    -      -       -      +
    115D  ASP*     1.3    62.9    +      -       -      +
    117D  MET*     4.5    10.3    -      -       +      -
    118D  VAL*     2.9    65.8    +      -       +      +
    119D  LEU*     5.7     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 115 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24D  GLN*     3.4    17.3    -      -       -      +
     27D  LYS*     2.6    41.5    +      -       -      +
    111D  GLY      3.5     3.0    +      -       -      -
    112D  ASN      3.2     9.6    +      -       -      +
    113D  LEU      3.1     0.6    -      -       -      -
    114D  TYR*     1.3    82.5    -      -       -      +
    116D  ARG*     1.3    50.6    +      -       -      +
    119D  LEU*     2.7    64.2    +      -       -      +
    121D  HIS      3.3    15.0    -      -       -      +
    122D  VAL*     3.9     6.8    -      -       -      +
    123D  VAL*     3.5    11.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 116 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54D  ASN      5.9     0.2    +      -       -      -
     56D  GLY*     5.5     0.6    -      -       -      -
     70D  ARG*     2.8    52.7    +      -       +      +
     71D  TRP*     5.1     0.3    -      -       -      -
     73D  PHE*     3.4    37.8    +      -       -      +
     74D  ALA*     4.3     9.0    -      -       +      +
     77D  ALA*     5.7     1.8    -      -       -      +
    112D  ASN*     2.9    35.7    +      -       -      +
    113D  LEU*     3.2     7.9    +      -       -      +
    115D  ASP*     1.3    74.5    -      -       -      +
    117D  MET*     1.3    57.8    +      -       -      +
    119D  LEU      2.9     5.6    -      -       -      +
    121D  HIS*     4.3     8.1    -      -       -      +
    122D  VAL*     3.6    17.1    -      -       +      +
    201G  MLE      3.5    27.4    +      -       -      -
    202G  IIL      2.6    27.3    +      -       -      -
    203G  SER*     3.5    17.8    +      -       -      +
    205G  5BV      3.8    10.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 117 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70D  ARG*     2.9    22.7    +      -       -      +
     71D  TRP*     4.0    29.7    -      -       +      -
     74D  ALA*     4.5     3.6    -      -       +      -
     78D  ILE*     4.8    11.4    -      -       -      -
    113D  LEU*     3.0    52.7    +      -       +      +
    114D  TYR*     4.2     8.1    -      -       +      +
    116D  ARG*     1.3    77.3    -      -       -      +
    118D  VAL*     1.3    66.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 118 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70D  ARG*     4.3     2.9    +      -       -      -
    114D  TYR*     2.9    60.8    +      -       +      +
    117D  MET*     1.3    82.9    -      -       +      +
    119D  LEU*     1.3    74.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 119 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31D  GLN*     4.0    17.0    -      -       -      +
     70D  ARG*     3.6     4.3    +      -       -      -
    114D  TYR*     5.7     3.4    -      -       +      -
    115D  ASP*     2.7    45.9    +      -       -      +
    116D  ARG      2.9    15.8    -      -       -      +
    118D  VAL*     1.3    90.7    -      -       +      +
    120D  GLY*     1.3    59.3    +      -       -      +
    121D  HIS*     3.0    23.7    +      -       +      +
    123D  VAL*     3.7    25.6    -      -       +      -
----------------------------------------------------------
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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