Contacts of the helix formed by residues 134 - 157 (chain G) in PDB entry 5XS0


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 SER 134 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103G  PHE*     4.1     0.7    -      -       -      -
    132G  LEU*     3.4     0.9    -      -       -      +
    133G  LYS*     1.3    71.9    -      -       -      +
    135G  LYS*     1.3    64.3    +      -       -      +
    136G  ALA*     3.5     3.8    +      -       -      +
    137G  LEU*     3.2    37.4    +      -       -      +
    138G  SER*     3.0    24.8    +      -       -      -
    130H  GLU*     3.7    20.0    +      -       -      -
     10Y    C      2.6    25.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 135 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96G  VAL*     4.0    17.7    -      -       +      -
    103G  PHE*     3.6    52.0    -      -       +      -
    133G  LYS      3.6     1.0    +      -       -      -
    134G  SER*     1.3    72.5    +      -       -      +
    136G  ALA*     1.3    57.4    +      -       -      +
    138G  SER*     3.2     4.0    +      -       -      -
    139G  LEU*     2.9    36.2    +      -       +      +
     95H  PHE*     3.5    39.1    -      -       +      +
     97H  ASP*     2.8    34.0    +      -       -      -
    130H  GLU*     5.3     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 136 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134G  SER*     3.2     7.0    +      -       -      +
    135G  LYS*     1.3    78.9    -      -       -      +
    137G  LEU*     1.3    57.9    +      -       +      +
    139G  LEU      3.4     0.2    +      -       -      -
    140G  GLU*     2.9    31.3    +      -       -      +
     95H  PHE*     3.6    26.4    -      -       +      -
    105H  VAL      4.8     1.1    -      -       -      +
    126H  TYR*     3.6     9.1    -      -       +      -
    128H  VAL*     3.6    37.9    -      -       +      -
    130H  GLU*     4.2     6.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 137 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132G  LEU*     4.3    15.7    -      -       +      +
    134G  SER*     3.2    22.4    +      -       -      +
    136G  ALA*     1.3    81.3    -      -       +      +
    138G  SER*     1.3    60.7    +      -       -      +
    140G  GLU*     3.9    16.4    -      -       -      +
    141G  LYS*     2.9    33.1    +      -       -      +
    128H  VAL*     5.3     7.2    -      -       +      -
    130H  GLU*     5.3     4.9    -      -       -      +
     10Y    C      3.3    43.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 138 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103G  PHE*     3.7    15.8    +      -       -      +
    105G  VAL*     3.8    22.0    -      -       -      -
    129G  SER*     3.2    28.4    +      -       -      -
    132G  LEU*     3.5    13.8    -      -       -      +
    134G  SER      3.0    15.2    +      -       -      -
    135G  LYS      3.2     9.2    +      -       -      -
    137G  LEU*     1.3    76.8    -      -       -      +
    139G  LEU*     1.3    58.2    +      -       -      +
    142G  ALA*     2.9    32.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 139 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93G  VAL*     4.3    12.1    -      -       +      -
     96G  VAL*     3.8    28.5    -      -       +      -
    105G  VAL*     3.9    14.4    -      -       +      -
    107G  VAL*     4.7     1.1    -      -       +      -
    135G  LYS*     2.9    22.1    +      -       +      +
    136G  ALA      3.9     0.4    -      -       -      +
    138G  SER*     1.3    75.8    -      -       -      +
    140G  GLU*     1.3    63.1    +      -       -      +
    142G  ALA*     3.9     0.3    -      -       -      +
    143G  ARG*     2.9    39.2    +      -       +      +
     94H  ASP*     3.6    24.9    -      -       +      +
     95H  PHE*     3.6    20.0    -      -       +      -
    126H  TYR*     3.3    28.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 140 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136G  ALA      2.9    17.2    +      -       -      +
    137G  LEU*     3.9    20.1    -      -       -      +
    139G  LEU*     1.3    75.9    -      -       -      +
    141G  LYS*     1.3    65.4    +      -       -      +
    143G  ARG*     4.0     0.8    -      -       -      +
    144G  LYS*     2.7    66.7    +      -       +      +
    126H  TYR*     3.6    34.0    -      -       +      +
    128H  VAL*     4.6     8.7    -      -       -      +
    149H  ASP*     4.7     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 141 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128G  VAL      3.1    23.5    +      -       -      +
    129G  SER*     3.8    16.1    -      -       -      +
    132G  LEU*     4.7    11.4    -      -       +      -
    137G  LEU      2.9    18.6    +      -       -      +
    138G  SER      3.8     2.7    -      -       -      +
    140G  GLU*     1.3    77.1    -      -       -      +
    142G  ALA*     1.3    57.8    +      -       -      +
    144G  LYS*     4.2     2.4    -      -       -      +
    145G  GLU*     2.4    71.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 142 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105G  VAL*     3.8    15.5    -      -       +      +
    107G  VAL*     3.7    20.4    -      -       +      -
    127G  GLY*     3.2    35.2    -      -       -      +
    128G  VAL      4.1     5.4    -      -       -      +
    129G  SER*     4.7     0.2    -      -       -      -
    138G  SER      2.9    17.9    +      -       -      +
    139G  LEU      3.9     1.1    -      -       -      +
    141G  LYS*     1.3    77.8    -      -       -      +
    143G  ARG*     1.3    56.8    +      -       -      +
    146G  ALA*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 143 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91G  GLN*     2.4    58.6    +      -       -      +
     93G  VAL*     3.3    29.3    -      -       +      +
    107G  VAL*     4.0    13.2    -      -       +      -
    139G  LEU*     2.9    24.2    +      -       -      +
    140G  GLU*     4.0     2.5    -      -       -      +
    142G  ALA*     1.3    76.0    -      -       -      +
    144G  LYS*     1.3    63.5    +      -       +      +
    146G  ALA      3.2     1.2    +      -       -      -
    147G  VAL*     3.0    21.7    +      -       -      +
     90H  GLN*     6.2     0.2    -      -       -      +
     92H  ASN*     4.2    10.7    -      -       -      +
     94H  ASP*     2.7    38.2    +      -       -      -
    108H  CYS*     3.4    38.4    -      -       -      +
    110H  PHE*     4.1     5.7    -      -       -      -
    124H  VAL*     4.5    10.8    -      -       +      -
    126H  TYR*     4.0     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 144 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140G  GLU*     2.7    55.2    +      -       +      +
    141G  LYS*     4.2     2.9    -      -       -      +
    143G  ARG*     1.3    75.8    -      -       +      +
    145G  GLU*     1.3    62.5    +      -       +      +
    147G  VAL*     3.3     4.5    +      -       -      -
    148G  THR*     3.0    28.0    +      -       -      -
    124H  VAL*     4.2    11.0    -      -       +      +
    126H  TYR*     4.2    10.7    -      -       +      +
    149H  ASP*     2.8    33.2    +      -       -      -
    153H  ARG*     3.5    44.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 145 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126G  TYR      3.8     3.7    -      -       -      +
    127G  GLY*     3.9     8.7    -      -       -      -
    128G  VAL*     3.5    17.1    +      -       -      +
    141G  LYS*     2.4    64.2    +      -       +      +
    144G  LYS*     1.3    76.9    -      -       -      +
    146G  ALA*     1.3    58.2    +      -       -      +
    148G  THR*     4.0     4.2    -      -       -      +
    149G  ASP*     2.9    34.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 146 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91G  GLN*     4.2     0.2    -      -       -      +
    107G  VAL*     3.3    31.0    -      -       +      +
    109G  ALA*     3.8    18.8    -      -       +      +
    125G  GLY*     3.5    10.2    -      -       -      +
    126G  TYR      3.4    13.2    -      -       -      +
    127G  GLY*     3.5     1.3    -      -       -      +
    142G  ALA      2.9    19.8    +      -       -      +
    143G  ARG      3.2     4.9    +      -       -      +
    145G  GLU*     1.3    76.1    -      -       -      +
    147G  VAL*     1.3    57.7    +      -       -      +
    150G  GLY*     2.9    25.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 147 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86G  HIS*     5.4     4.7    -      -       +      +
     88G  ILE*     3.7    22.9    -      -       +      -
     91G  GLN*     3.6    12.1    -      -       -      +
    109G  ALA*     4.0    11.7    -      -       +      -
    111G  VAL*     3.6     8.6    -      -       +      +
    143G  ARG      3.0    16.3    +      -       -      +
    144G  LYS*     3.8     4.5    -      -       -      +
    146G  ALA*     1.3    76.2    -      -       -      +
    148G  THR*     1.3    65.5    +      -       -      +
    150G  GLY      3.3     1.2    +      -       -      -
    151G  LEU*     3.0    21.9    +      -       +      +
    122H  GLU      4.8     2.0    -      -       -      +
    123H  ASP*     3.5    33.2    -      -       -      +
    124H  VAL*     3.5    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 148 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68G  GLY*     4.6    17.5    -      -       -      -
    144G  LYS      3.0    17.0    +      -       -      -
    145G  GLU*     4.0     4.7    -      -       -      -
    147G  VAL*     1.3    78.3    -      -       -      +
    149G  ASP*     1.3    58.7    +      -       -      +
    151G  LEU*     3.2    10.9    +      -       +      +
    152G  LYS*     2.9    42.4    +      -       +      +
    123H  ASP*     5.1     2.9    +      -       -      -
    153H  ARG*     3.6    15.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 149 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144F  LYS*     2.9    37.3    +      -       -      -
    125G  GLY*     3.6     0.3    -      -       -      -
    126G  TYR      3.4    19.2    +      -       -      +
    145G  GLU      2.9    18.6    +      -       -      +
    146G  ALA      3.9     1.6    -      -       -      +
    148G  THR*     1.3    77.0    -      -       -      +
    150G  GLY*     1.3    58.1    +      -       -      +
    152G  LYS*     3.2    23.2    +      -       -      +
    153G  ARG*     2.9    34.8    +      -       -      +
    156G  ARG*     4.2    10.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 150 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111G  VAL*     3.6    17.0    -      -       -      +
    123G  ASP*     4.6     2.8    -      -       -      +
    124G  VAL      4.0     4.5    -      -       -      -
    125G  GLY*     3.3    24.3    -      -       -      -
    146G  ALA      2.9    14.4    +      -       -      -
    147G  VAL      3.3     2.2    +      -       -      -
    149G  ASP*     1.3    75.4    -      -       -      +
    151G  LEU*     1.3    58.2    +      -       -      +
    153G  ARG*     3.4     1.3    +      -       -      +
    154G  ALA*     2.9    30.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 151 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71G  VAL*     6.0     0.7    -      -       +      -
     72G  ILE*     4.6    18.4    -      -       +      -
     84G  TRP*     3.8    14.1    -      -       +      -
     86G  HIS*     3.7    39.0    -      -       +      +
    111G  VAL*     3.7    11.3    -      -       +      +
    113G  VAL*     3.6    24.0    -      -       +      -
    147G  VAL*     3.0    14.5    +      -       +      +
    148G  THR*     3.2    13.2    +      -       +      +
    150G  GLY*     1.3    77.2    -      -       -      +
    152G  LYS*     1.3    60.1    +      -       +      +
    154G  ALA*     3.3     0.9    +      -       -      +
    155G  LEU*     2.9    42.5    +      -       +      +
    123H  ASP*     5.7     2.5    -      -       -      +
    157H  SER*     4.9     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 152 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65G  TYR*     4.8    14.8    -      -       -      +
     66G  ILE*     3.6    27.0    +      -       +      +
     67G  GLU*     5.6     0.2    -      -       -      +
     68G  GLY*     4.5    11.9    -      -       -      +
     71G  VAL*     4.2    27.3    -      -       +      +
    148G  THR*     2.9    23.4    +      -       +      +
    149G  ASP*     3.2    32.2    +      -       -      +
    151G  LEU*     1.3    77.8    -      -       +      +
    153G  ARG*     1.3    56.8    +      -       -      +
    155G  LEU*     3.3     6.0    +      -       -      +
    156G  ARG*     2.9    46.1    +      -       -      +
    162G  LEU      4.9     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 153 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144F  LYS*     3.4    48.1    +      -       -      +
    147F  VAL*     5.2     0.8    -      -       -      +
    148F  THR*     3.7    19.8    +      -       -      -
    123G  ASP*     2.9    34.7    +      -       +      +
    124G  VAL      2.8    26.0    +      -       -      +
    149G  ASP*     2.9    34.4    +      -       -      +
    150G  GLY      4.0     2.7    -      -       -      +
    152G  LYS*     1.3    76.0    -      -       -      +
    154G  ALA*     1.3    61.6    +      -       -      +
    156G  ARG*     3.3    51.4    +      -       -      +
    157G  SER*     3.7    12.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 154 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86F  HIS*     6.0     0.2    -      -       -      -
    111G  VAL      3.7    14.8    -      -       -      +
    113G  VAL*     3.6    22.0    -      -       +      -
    121G  HIS*     3.6    36.1    -      -       -      +
    122G  GLU      4.9     0.2    -      -       -      -
    123G  ASP*     3.8    10.9    -      -       -      +
    150G  GLY      2.9    18.1    +      -       -      +
    151G  LEU*     3.8     1.8    -      -       -      +
    153G  ARG*     1.3    78.1    -      -       -      +
    155G  LEU*     1.3    62.1    +      -       -      +
    157G  SER*     3.5    10.1    +      -       -      -
    158G  PHE*     4.3     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 155 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71G  VAL*     3.8    30.7    -      -       +      +
     72G  ILE*     5.4     0.7    -      -       +      +
     75G  ALA*     4.1    20.2    -      -       +      -
     79G  PHE*     4.9     3.1    -      -       +      -
     84G  TRP*     4.1    15.0    -      -       +      -
    113G  VAL*     3.6    31.2    -      -       +      -
    151G  LEU*     2.9    36.2    +      -       +      +
    152G  LYS      3.9     2.9    -      -       -      +
    154G  ALA*     1.3    72.1    -      -       -      +
    156G  ARG*     1.3    65.5    +      -       -      +
    157G  SER      3.1     3.7    +      -       -      -
    158G  PHE*     3.2    27.1    +      -       +      -
    162G  LEU*     3.5    29.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 156 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72F  ILE*     5.0     4.3    -      -       +      -
    144F  LYS*     5.9     0.4    -      -       -      +
    149G  ASP*     4.2    10.3    +      -       -      -
    152G  LYS*     2.9    32.3    +      -       +      +
    153G  ARG*     3.3    55.3    -      -       -      +
    154G  ALA      3.3     0.2    -      -       -      -
    155G  LEU*     1.3    77.6    -      -       -      +
    157G  SER*     1.3    56.8    +      -       -      +
    158G  PHE      3.0     6.3    +      -       -      -
    159G  GLY      3.3    17.3    +      -       -      +
    162G  LEU      3.9     8.7    +      -       -      +
    163G  GLY*     3.4    34.3    -      -       -      +
    164G  ASN*     3.6    16.2    -      -       -      +
    166G  ILE*     4.5    10.8    -      -       -      +
    167G  LEU*     4.4    28.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 157 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72F  ILE*     3.4    30.8    -      -       -      +
     76F  ASN*     3.2    15.8    +      -       -      +
     84F  TRP*     3.7    12.8    -      -       -      -
     86F  HIS*     3.9    13.3    +      -       -      -
    151F  LEU*     5.0     2.1    -      -       -      +
    121G  HIS*     3.6    28.4    +      -       -      -
    123G  ASP*     4.8     3.6    +      -       -      -
    153G  ARG      3.7    12.5    +      -       -      -
    154G  ALA*     3.8     8.8    +      -       -      -
    155G  LEU      3.1     2.2    -      -       -      -
    156G  ARG*     1.3    75.4    -      -       -      +
    158G  PHE*     1.3    58.3    +      -       -      +
    159G  GLY      3.4     0.4    -      -       -      -
----------------------------------------------------------
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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