Contacts of the helix formed by residues 233 - 259 (chain B) in PDB entry 5V2C


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 ASN 233 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  ILE*     5.5     2.6    -      -       -      +
    135B  LEU*     4.1     2.9    -      -       -      +
    230B  ARG*     2.9    19.3    +      -       +      +
    231B  MET      3.3     0.4    -      -       -      -
    232B  GLY*     1.3    76.9    -      -       -      +
    234B  ILE*     1.3    63.1    +      -       -      +
    235B  GLU*     2.9    26.3    +      -       -      +
    236B  THR*     2.9    33.6    +      -       -      +
    472B  ARG      4.9     0.2    +      -       -      -
    473B  THR*     4.2    24.5    +      -       -      +
    476B  ARG*     3.7    48.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 234 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  ILE*     4.1    38.8    -      -       +      +
     19B  LEU*     3.4    32.8    -      -       +      -
    133B  LEU*     4.2    20.0    -      -       +      -
    135B  LEU*     3.6    28.6    -      -       +      +
    138B  MET*     6.2     0.4    -      -       +      -
    232B  GLY      4.0     1.8    +      -       -      -
    233B  ASN*     1.3    77.0    +      -       -      +
    235B  GLU*     1.3    65.1    +      -       +      +
    236B  THR      3.2     0.2    -      -       -      -
    237B  VAL*     3.1    18.1    +      -       +      +
    238B  LEU*     3.3    10.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 235 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  ILE*     5.2     6.8    -      -       +      +
    233B  ASN*     2.9    19.9    +      -       -      +
    234B  ILE*     1.3    80.6    -      -       +      +
    236B  THR*     1.4    63.6    +      -       -      +
    238B  LEU*     3.3    10.8    +      -       +      +
    239B  SER*     3.0    18.9    +      -       -      -
    469B  HIS*     2.8    36.3    +      -       +      +
    472B  ARG*     3.0    59.1    +      -       -      +
    473B  THR*     3.2    16.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 236 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229B  LEU*     2.7    36.5    +      -       +      +
    230B  ARG      3.6     7.0    -      -       -      +
    231B  MET*     4.3    11.0    -      -       +      +
    233B  ASN      2.9    17.8    +      -       -      +
    235B  GLU*     1.4    75.9    -      -       -      +
    237B  VAL*     1.3    75.2    +      -       +      +
    239B  SER*     3.3     6.0    +      -       -      -
    240B  SER*     3.0    25.6    +      -       -      +
    473B  THR*     3.4    24.9    +      -       -      +
    474B  LEU*     6.0     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 237 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135B  LEU*     3.9    38.6    -      -       +      -
    234B  ILE*     3.1    14.5    +      -       +      +
    236B  THR*     1.3    82.8    -      -       +      +
    238B  LEU*     1.3    58.8    +      -       -      +
    240B  SER*     3.5     6.7    +      -       -      +
    241B  SER*     2.8    47.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 238 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234B  ILE      3.3     7.0    +      -       -      +
    235B  GLU*     3.3    17.7    +      -       +      +
    237B  VAL*     1.3    79.1    -      -       -      +
    239B  SER*     1.3    61.8    +      -       -      +
    241B  SER*     3.9     6.0    -      -       -      -
    242B  ILE*     2.9    51.1    +      -       +      +
    469B  HIS*     3.6    37.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 239 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235B  GLU      3.0    13.0    +      -       -      -
    236B  THR*     3.5    12.1    -      -       -      -
    237B  VAL      3.2     0.2    -      -       -      -
    238B  LEU*     1.3    78.5    -      -       -      +
    240B  SER*     1.3    61.1    +      -       -      +
    242B  ILE*     3.8     3.7    -      -       -      +
    243B  ALA      3.1    10.7    +      -       -      -
    466B  HIS*     3.0    36.3    +      -       -      -
    469B  HIS*     3.8     8.4    -      -       -      +
    470B  GLY*     3.1    39.2    +      -       -      +
    473B  THR*     4.5     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 240 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236B  THR*     3.0    16.3    +      -       -      +
    237B  VAL*     3.5     8.1    +      -       -      +
    239B  SER*     1.3    77.7    -      -       -      +
    241B  SER*     1.3    66.4    +      -       -      +
    243B  ALA*     3.2     8.9    +      -       -      +
    244B  ALA*     3.0    21.3    +      -       -      +
    466B  HIS*     4.9     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 241 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237B  VAL*     2.8    37.2    +      -       -      +
    238B  LEU*     3.9     7.2    -      -       -      -
    240B  SER*     1.3    74.9    +      -       -      +
    242B  ILE*     1.3    65.3    +      -       -      +
    244B  ALA*     3.2     7.2    +      -       -      +
    245B  VAL*     2.9    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 242 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238B  LEU*     2.9    40.9    +      -       +      +
    239B  SER      3.8     3.1    -      -       -      +
    241B  SER*     1.3    76.1    -      -       -      +
    243B  ALA*     1.4    59.7    +      -       -      +
    245B  VAL*     3.3     7.8    +      -       -      +
    246B  PHE*     2.9    27.2    +      -       -      +
    462B  PHE*     3.1    50.6    -      -       +      +
    465B  GLY*     4.0     9.0    -      -       -      +
    466B  HIS*     3.5    10.1    -      -       -      +
    469B  HIS*     3.7    29.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 243 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239B  SER      3.1     7.2    +      -       -      +
    240B  SER*     3.4    11.4    -      -       -      +
    241B  SER      3.2     0.4    -      -       -      -
    242B  ILE*     1.4    76.7    -      -       -      +
    244B  ALA*     1.3    62.9    +      -       -      +
    246B  PHE*     3.4    23.8    +      -       +      -
    247B  PHE*     3.1    22.0    +      -       -      +
    466B  HIS*     3.6    31.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 244 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240B  SER      3.0    13.0    +      -       -      +
    241B  SER*     3.2    11.2    +      -       -      +
    243B  ALA*     1.3    75.6    -      -       -      +
    245B  VAL*     1.3    59.2    +      -       +      +
    247B  PHE*     3.3    12.4    +      -       +      +
    248B  ALA*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 245 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241B  SER*     2.9    23.2    +      -       -      +
    242B  ILE*     3.6     7.2    -      -       -      +
    244B  ALA*     1.3    75.9    -      -       +      +
    246B  PHE*     1.3    59.8    +      -       -      +
    248B  ALA*     3.3     7.2    +      -       +      +
    249B  ALA*     2.9    30.2    +      -       +      +
    462B  PHE*     4.1    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 246 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242B  ILE      2.9    22.8    +      -       -      -
    243B  ALA*     3.5    23.1    -      -       +      -
    245B  VAL*     1.3    72.1    -      -       -      +
    247B  PHE*     1.3    71.4    +      -       +      +
    249B  ALA*     3.3     7.1    +      -       -      +
    250B  PHE*     3.0    49.4    +      +       -      -
    459B  ALA*     3.4    21.9    -      -       -      +
    462B  PHE*     3.7    15.7    -      -       +      -
    463B  PHE*     3.7    36.3    -      +       +      -
    466B  HIS*     3.7    24.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with PHE 247 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243B  ALA      3.1    13.4    +      -       -      +
    244B  ALA*     3.4    14.1    -      -       -      +
    245B  VAL      3.2     0.2    -      -       -      -
    246B  PHE*     1.3    83.4    -      -       +      +
    248B  ALA*     1.3    65.0    +      -       -      +
    250B  PHE*     3.2     7.8    +      -       +      +
    251B  VAL*     3.0    42.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 248 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244B  ALA      3.0    16.5    +      -       -      +
    245B  VAL*     3.3     7.4    +      -       -      +
    247B  PHE*     1.3    79.1    -      -       +      +
    249B  ALA*     1.4    57.6    +      -       -      +
    251B  VAL*     3.2     9.2    +      -       -      +
    252B  VAL*     2.9    34.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 249 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245B  VAL*     2.9    21.6    +      -       +      +
    246B  PHE*     3.7     4.5    -      -       -      +
    247B  PHE      3.2     0.4    -      -       -      -
    248B  ALA*     1.4    73.3    -      -       -      +
    250B  PHE*     1.3    63.4    +      -       -      +
    252B  VAL*     3.4    12.3    -      -       +      +
    253B  ALA*     3.0    24.3    +      -       -      +
    455B  HIS*     4.0    18.8    -      -       +      +
    458B  PHE*     5.3     1.8    -      -       +      -
    459B  ALA*     3.8    22.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 250 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246B  PHE*     3.0    46.7    +      +       -      +
    247B  PHE*     3.2     6.5    +      -       +      +
    249B  ALA*     1.3    76.3    -      -       -      +
    251B  VAL*     1.3    59.5    +      -       +      +
    253B  ALA*     3.3     6.1    +      -       +      +
    254B  GLY*     2.9    25.3    +      -       -      -
    456B  ALA*     4.0    20.2    -      -       +      -
    459B  ALA*     3.5    26.2    -      -       +      -
    460B  LEU*     3.7    27.4    -      -       +      -
    463B  PHE*     5.6     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 251 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  PHE*     3.0    44.8    +      -       +      +
    248B  ALA*     3.2    10.5    +      -       -      +
    250B  PHE*     1.3    77.9    -      -       +      +
    252B  VAL*     1.3    62.7    +      -       +      +
    254B  GLY*     3.2     2.8    +      -       -      +
    255B  THR*     2.9    40.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 252 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248B  ALA*     2.9    21.1    +      -       +      +
    249B  ALA*     3.4    18.6    -      -       -      +
    251B  VAL*     1.3    76.5    -      -       +      +
    253B  ALA*     1.3    64.3    +      -       -      +
    255B  THR*     3.6     9.6    +      -       -      +
    256B  MET*     3.1    26.0    +      -       -      +
    263B  THR*     5.5     0.2    -      -       -      +
    451B  PHE*     3.5    29.5    -      -       +      -
    455B  HIS*     4.2     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 253 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249B  ALA      3.0    18.7    +      -       -      +
    250B  PHE*     3.5     7.9    -      -       +      +
    251B  VAL      3.2     0.2    -      -       -      -
    252B  VAL*     1.3    79.9    -      -       -      +
    254B  GLY*     1.3    58.0    +      -       -      +
    256B  MET*     3.7     1.0    -      -       -      +
    257B  TRP*     3.0    29.3    +      -       -      +
    451B  PHE*     4.6     7.2    -      -       -      -
    452B  THR*     3.6    21.0    -      -       +      +
    455B  HIS*     4.3     1.1    -      -       +      -
    456B  ALA*     4.0    30.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 254 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250B  PHE      2.9    15.5    +      -       -      -
    251B  VAL*     3.2     2.6    +      -       -      -
    253B  ALA*     1.3    77.3    -      -       -      +
    255B  THR*     1.3    57.7    +      -       -      +
    257B  TRP*     3.1     3.4    +      -       -      -
    258B  TYR*     2.9    52.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 255 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  PRO*     5.8     4.7    -      -       +      -
    251B  VAL*     2.9    34.4    +      -       +      +
    252B  VAL*     3.6    11.3    +      -       -      +
    254B  GLY*     1.3    73.8    -      -       -      +
    256B  MET*     1.3    62.4    +      -       -      +
    258B  TYR*     5.1     1.1    -      -       -      -
    259B  GLY*     2.9    21.9    +      -       -      +
    260B  SER*     4.0    21.0    +      -       -      +
    262B  THR*     4.6     4.2    +      -       -      +
    263B  THR*     2.9    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 256 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65B  PHE*     4.5     3.8    -      -       +      -
     68B  ARG*     5.8     0.7    -      -       -      +
    252B  VAL      3.1    20.3    +      -       -      +
    253B  ALA      3.7     1.1    -      -       -      +
    255B  THR*     1.3    79.7    +      -       -      +
    257B  TRP*     1.4    59.6    +      -       -      +
    263B  THR*     3.8    21.5    -      -       +      +
    268B  PHE*     3.7    44.9    -      -       +      -
    448B  ARG*     2.7    63.1    +      -       +      +
    451B  PHE*     3.7    34.1    -      -       +      -
    452B  THR*     3.3    18.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 257 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253B  ALA      3.0    18.2    +      -       -      +
    254B  GLY*     3.1     5.6    +      -       -      +
    256B  MET*     1.4    79.8    -      -       -      +
    258B  TYR*     1.4    67.4    +      +       +      +
    259B  GLY      3.8     0.2    +      -       -      -
    271B  THR*     3.8    13.9    -      -       -      -
    272B  ARG*     3.6    29.2    +      -       +      +
    273B  TYR*     3.3    43.0    +      +       -      -
    319B  PRO*     3.8    47.8    -      -       +      -
    320B  ALA*     4.1     8.1    -      -       +      -
    448B  ARG*     4.4     6.5    -      -       +      -
    449B  GLY*     3.9    16.6    -      -       -      -
    452B  THR*     3.7    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 258 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193B  TYR*     2.8    20.9    +      -       -      +
    254B  GLY*     2.9    36.6    +      -       -      +
    255B  THR*     5.1     0.7    -      -       -      -
    257B  TRP*     1.4    83.5    -      +       +      +
    259B  GLY*     1.3    63.2    +      -       -      +
    271B  THR*     4.0    11.1    +      -       -      +
    273B  TYR*     3.4    44.8    +      +       -      +
----------------------------------------------------------
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Residues in contact with GLY 259 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  PRO*     4.8     3.1    -      -       -      +
    193B  TYR*     3.1    25.3    +      -       -      -
    255B  THR*     2.9    17.0    +      -       -      +
    256B  MET      3.8     1.4    +      -       -      -
    257B  TRP      3.4     2.4    -      -       -      -
    258B  TYR*     1.3    82.7    -      -       -      +
    260B  SER*     1.3    65.8    +      -       -      -
    263B  THR*     3.3     8.1    -      -       -      -
    271B  THR*     4.4     5.6    -      -       -      -
    448B  ARG*     4.0     8.9    -      -       -      +
----------------------------------------------------------
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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