Contacts of the helix formed by residues 141 - 164 (chain D) in PDB entry 1F33


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ASP 141 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21D  VAL*     4.7    13.8    -      -       +      +
     25D  GLU*     3.4     8.9    +      -       -      +
     29D  THR*     3.8    17.6    +      -       -      +
     83D  ARG*     2.7    35.2    +      -       -      -
     87D  LEU*     4.2     6.7    -      -       -      +
    139D  ALA*     3.5     1.3    -      -       -      +
    140D  LYS*     1.3    76.4    -      -       -      +
    142D  ASP*     1.3    67.9    +      -       -      +
    143D  ASP*     3.9     3.3    +      -       -      +
    144D  THR*     2.5    33.0    +      -       -      +
    145D  ALA*     2.9    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 142 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140D  LYS      3.3     7.9    +      -       -      +
    141D  ASP*     1.3    72.5    +      -       -      +
    143D  ASP*     1.3    69.6    +      -       -      +
    145D  ALA*     3.1     9.8    +      -       -      +
    146D  ASP*     2.9    22.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 143 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83D  ARG*     3.3    38.4    +      -       -      +
    141D  ASP*     3.3     2.5    +      -       -      -
    142D  ASP*     1.3    82.3    -      -       -      +
    144D  THR*     1.3    62.6    +      -       -      +
    146D  ASP*     3.2     9.8    +      -       -      +
    147D  ILE*     3.0    29.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 144 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29D  THR*     3.2    22.2    -      -       +      +
     32D  LEU*     5.0     4.5    -      -       +      -
     33D  LEU*     3.5    29.2    -      -       +      -
     83D  ARG*     3.6     9.4    +      -       -      +
    139D  ALA*     4.4     7.4    -      -       +      -
    141D  ASP*     2.5    33.9    +      -       -      -
    143D  ASP*     1.3    74.3    -      -       -      +
    145D  ALA*     1.3    66.7    +      -       -      +
    147D  ILE*     3.1    10.5    +      -       -      +
    148D  LEU*     2.9    35.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 145 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136D  ILE*     4.0    24.6    -      -       +      +
    139D  ALA*     3.9    16.5    -      -       +      +
    141D  ASP      2.9    12.0    +      -       -      +
    142D  ASP*     3.4    12.8    -      -       -      +
    144D  THR*     1.3    76.4    -      -       -      +
    146D  ASP*     1.3    54.5    +      -       -      +
    148D  LEU*     3.3     5.1    +      -       -      +
    149D  THR*     2.6    38.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 146 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142D  ASP      2.9    12.1    +      -       -      +
    143D  ASP*     3.3    12.6    -      -       -      +
    145D  ALA*     1.3    76.9    -      -       -      +
    147D  ILE*     1.3    65.7    +      -       +      +
    149D  THR*     3.0     8.1    +      -       -      -
    150D  ALA*     3.0    23.1    +      -       -      +
    146F  ASP*     4.3     2.9    -      -       -      +
    606F  TRS      2.8    49.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 147 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33D  LEU*     5.2     2.5    -      -       +      -
     76D  HIS*     4.7     3.5    +      -       -      +
     79D  THR*     3.8    31.0    -      -       +      +
     80D  MET*     3.6    30.3    -      -       +      -
     83D  ARG*     3.6    40.8    -      -       +      -
    143D  ASP*     3.0    16.3    +      -       +      +
    144D  THR*     3.4     8.1    -      -       +      +
    146D  ASP*     1.3    78.0    -      -       +      +
    148D  LEU*     1.3    65.5    +      -       +      +
    150D  ALA*     3.4     7.2    +      -       -      +
    151D  ALA*     3.1    21.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 148 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32D  LEU*     4.3     7.4    -      -       +      -
     33D  LEU*     4.6     8.3    -      -       +      -
     36D  GLN*     4.0    11.2    -      -       +      -
     80D  MET*     3.8    28.3    -      -       +      -
    132D  VAL*     3.9    19.5    -      -       +      +
    135D  ALA*     3.7    33.2    -      -       +      +
    136D  ILE*     3.9    14.2    -      -       +      +
    139D  ALA*     4.1     8.3    -      -       +      -
    144D  THR*     2.9    36.5    +      -       +      +
    145D  ALA      3.7     3.8    -      -       -      +
    147D  ILE*     1.3    73.3    -      -       +      +
    149D  THR*     1.3    56.2    +      -       -      +
    151D  ALA*     3.3     4.1    +      -       -      +
    152D  SER*     2.7    35.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 149 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136D  ILE*     3.4    25.1    -      -       +      +
    145D  ALA      2.6    23.5    +      -       -      -
    146D  ASP*     3.4     8.8    -      -       -      -
    148D  LEU*     1.3    73.9    -      -       -      +
    150D  ALA*     1.3    58.9    +      -       -      +
    153D  ARG*     2.8    32.8    +      -       -      +
    142F  ASP*     4.2     4.6    -      -       +      +
    143F  ASP*     3.4    21.4    -      -       -      +
    146F  ASP*     3.6    37.9    -      -       +      +
    606F  TRS      5.2     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 150 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  HIS*     3.4    19.2    -      -       +      +
    146D  ASP      3.0    11.9    +      -       -      +
    147D  ILE*     3.6    10.3    -      -       -      +
    149D  THR*     1.3    76.7    -      -       -      +
    151D  ALA*     1.3    62.5    +      -       -      +
    153D  ARG*     3.4     8.9    -      -       -      +
    154D  ASP*     3.4    17.3    +      -       -      +
    146F  ASP*     5.2     0.9    -      -       -      -
    606F  TRS      4.5    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 151 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40D  PHE*     3.9    22.2    -      -       +      -
     76D  HIS*     3.4    31.3    -      -       +      +
     80D  MET*     5.0     5.6    -      -       -      -
    132D  VAL*     4.7     3.1    -      -       +      -
    147D  ILE      3.1    16.6    +      -       -      +
    148D  LEU*     3.7     7.2    -      -       -      +
    150D  ALA*     1.3    74.9    -      -       -      +
    152D  SER*     1.3    66.1    +      -       -      +
    154D  ASP*     3.1     4.5    +      -       -      +
    155D  LEU*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 152 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132D  VAL*     4.0    21.2    -      -       -      +
    133D  ARG*     3.7    18.9    -      -       -      +
    136D  ILE*     3.6     9.4    -      -       -      -
    148D  LEU      2.7    22.7    +      -       -      -
    149D  THR      3.2     0.2    +      -       -      -
    151D  ALA*     1.3    72.9    -      -       -      +
    153D  ARG*     1.3    63.4    +      -       -      +
    155D  LEU*     3.1     1.9    +      -       -      +
    156D  ASP*     2.9    29.1    +      -       -      +
    143F  ASP*     2.4    33.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 153 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149D  THR      2.8    15.4    +      -       -      +
    150D  ALA*     3.4    10.3    -      -       -      +
    151D  ALA      3.2     0.2    -      -       -      -
    152D  SER*     1.3    77.1    -      -       -      +
    154D  ASP*     1.3    64.1    +      -       -      +
    156D  ASP*     3.6     4.6    +      -       -      +
    157D  LYS*     3.3    19.1    +      -       -      +
     79F  THR*     3.5    19.0    -      -       -      +
     83F  ARG*     5.2     3.6    -      -       -      +
     86F  GLN*     4.3     4.0    -      -       -      +
    143F  ASP*     3.8    25.8    -      -       +      +
    146F  ASP*     3.1    26.8    +      -       -      -
    147F  ILE*     3.5    44.4    -      -       +      +
    150F  ALA*     4.9    10.7    -      -       -      +
    606F  TRS      4.6     7.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 154 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72D  ALA*     4.2     9.4    -      -       -      +
     76D  HIS*     2.7    31.8    +      -       +      +
    150D  ALA      3.4     3.9    +      -       -      -
    151D  ALA      3.1     8.8    +      -       -      +
    153D  ARG*     1.3    80.9    -      -       -      +
    155D  LEU*     1.3    61.7    +      -       +      +
    157D  LYS*     3.0    12.2    +      -       -      +
    158D  PHE*     2.8    56.8    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 155 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40D  PHE*     3.3    38.6    -      -       +      -
     43D  LEU*     3.9    17.5    -      -       +      -
     73D  LEU*     4.1    14.8    -      -       +      -
     76D  HIS*     5.5     1.1    -      -       +      -
    125D  TYR*     4.2    10.4    -      -       +      +
    128D  VAL*     3.5    29.8    -      -       +      -
    129D  ALA*     3.8    25.3    -      -       +      +
    132D  VAL*     4.8     1.8    -      -       +      -
    151D  ALA*     3.0    23.8    +      -       +      +
    152D  SER*     3.8     5.6    -      -       -      +
    154D  ASP*     1.3    77.2    -      -       +      +
    156D  ASP*     1.3    58.5    +      -       -      +
    158D  PHE*     3.2     8.1    +      -       +      +
    159D  LEU*     2.8    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 156 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129D  ALA*     3.6    11.3    -      -       -      +
    133D  ARG*     2.6    34.0    +      -       -      -
    152D  SER*     2.9    19.4    +      -       -      +
    153D  ARG      4.0     1.6    -      -       -      +
    155D  LEU*     1.3    77.0    -      -       -      +
    157D  LYS*     1.3    62.4    +      -       -      +
    159D  LEU*     3.6     6.1    +      -       -      +
    160D  TRP*     3.1    23.7    +      -       -      +
     19F  ASN*     3.3    16.4    +      -       -      +
     83F  ARG*     2.6    42.2    +      -       -      +
     86F  GLN*     3.7     9.5    -      -       +      +
    143F  ASP*     3.5     3.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 157 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153D  ARG      3.3    12.2    +      -       -      +
    154D  ASP*     3.0    17.3    +      -       -      +
    156D  ASP*     1.3    79.2    -      -       -      +
    158D  PHE*     1.3    72.2    +      -       +      +
    160D  TRP*     3.2    16.1    +      -       +      +
    161D  PHE*     2.9    57.6    +      -       +      +
     82F  GLU*     4.0    20.2    +      -       -      +
     86F  GLN*     3.8    18.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 158 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68D  GLY      5.6     0.2    -      -       -      -
     69D  PHE*     3.3    56.3    -      +       +      -
     72D  ALA*     3.6    32.3    -      -       +      -
     73D  LEU*     4.1    12.8    -      -       +      -
     76D  HIS*     5.8     0.2    -      +       -      -
    125D  TYR*     3.8    25.4    -      +       +      -
    154D  ASP*     2.8    45.6    +      -       +      +
    155D  LEU*     3.2     8.0    +      -       -      +
    157D  LYS*     1.3    88.6    -      -       +      +
    159D  LEU*     1.3    66.4    +      -       -      +
    161D  PHE*     2.9     2.3    +      -       -      +
    162D  ILE*     2.7    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 159 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122D  ALA*     3.5    28.9    -      -       -      +
    125D  TYR*     4.2    12.2    -      -       +      -
    126D  ALA*     3.9    23.3    -      -       +      +
    129D  ALA*     4.4    10.3    -      -       +      -
    155D  LEU      2.8    20.7    +      -       -      +
    156D  ASP*     3.7     5.4    -      -       -      +
    158D  PHE*     1.3    71.9    -      -       -      +
    160D  TRP*     1.3    58.2    +      -       -      +
    162D  ILE*     3.5     4.1    -      -       -      +
    163D  GLU*     2.8    57.4    +      -       +      +
     17F  THR*     4.3     2.5    -      -       -      +
     18F  ARG      4.2     1.3    -      -       -      -
     19F  ASN*     3.7    40.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 160 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156D  ASP      3.1    12.4    +      -       -      +
    157D  LYS*     3.3    10.1    -      -       +      +
    159D  LEU*     1.3    80.3    -      -       -      +
    161D  PHE*     1.3    85.9    +      +       -      +
    163D  GLU*     3.8     8.3    -      -       -      +
    164D  SER*     2.7    63.7    +      -       -      -
     52E  TRP*     3.9    20.2    +      -       -      -
     54E  MET      5.2     2.0    +      -       -      -
     55E  ARG*     4.2    13.7    -      -       -      +
     59E  PHE*     4.2    15.3    -      +       -      -
     63E  HIS*     3.9    15.0    -      +       -      -
     17F  THR*     5.8     0.9    -      -       -      -
     82F  GLU*     3.8    39.9    -      -       +      -
     85F  VAL*     3.2    31.3    -      -       +      +
     86F  GLN*     3.6    33.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 161 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  MET*     4.0     7.2    -      -       +      -
     69D  PHE*     3.7    29.6    -      +       +      -
    157D  LYS*     2.9    37.6    +      -       +      +
    158D  PHE      2.9     7.2    +      -       -      +
    160D  TRP*     1.3   113.6    -      +       -      +
    162D  ILE*     1.3    66.0    +      -       -      +
    164D  SER*     3.5     2.3    +      -       -      -
    165D  ASN*     2.8    29.9    +      -       -      -
     59E  PHE*     3.8    13.4    -      +       -      -
     60E  ILE*     3.5    29.4    -      -       +      -
     63E  HIS*     3.9    20.9    -      +       -      -
     64E  GLU*     4.9     4.5    -      -       -      -
     82F  GLU*     5.7     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 162 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65D  MET*     4.4    10.8    -      -       +      -
     66D  LEU*     4.8     6.1    -      -       +      -
     69D  PHE*     3.8    15.5    -      -       +      -
    118D  LEU*     3.3    39.4    -      -       +      +
    121D  LEU*     4.1     9.4    -      -       +      -
    122D  ALA*     3.9    12.3    -      -       +      +
    125D  TYR*     3.5    53.2    -      -       +      -
    158D  PHE      2.7    19.2    +      -       -      +
    159D  LEU*     3.5     4.3    -      -       -      +
    161D  PHE*     1.3    72.9    -      -       -      +
    163D  GLU*     1.3    64.4    +      -       -      +
    165D  ASN*     3.0    18.6    +      -       -      +
    166D  ILE*     3.6     6.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 163 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122D  ALA*     4.3     4.3    -      -       +      -
    159D  LEU*     2.8    34.4    +      -       +      +
    160D  TRP*     3.8     7.6    -      -       -      +
    162D  ILE*     1.3    74.1    -      -       -      +
    164D  SER*     1.3    57.7    +      -       -      +
    166D  ILE*     2.9    36.5    +      -       +      +
     55E  ARG*     4.7    13.7    +      -       -      +
     16F  TYR*     4.2     4.4    -      -       -      +
     17F  THR*     2.9    31.7    +      -       -      -
     18F  ARG*     2.7    59.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 164 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160D  TRP*     2.7    49.8    +      -       -      -
    161D  PHE      3.8     0.7    -      -       -      -
    162D  ILE      3.2     0.4    -      -       -      -
    163D  GLU*     1.3    71.8    -      -       -      +
    165D  ASN*     1.3    56.8    +      -       -      +
    166D  ILE      3.4     0.2    -      -       -      -
     54E  MET      4.4     3.1    -      -       -      -
     55E  ARG*     3.9    19.7    +      -       -      +
     56E  GLY      2.9    26.3    +      -       -      -
     59E  PHE*     3.0    45.6    -      -       -      +
----------------------------------------------------------
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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