Contacts of the helix formed by residues 228 - 256 (chain B) in PDB entry 4O6M


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 228 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175B  ASN*     4.6     7.1    +      -       -      -
    226B  MET      3.6     4.2    +      -       -      -
    227B  GLU*     1.3    77.6    -      -       -      +
    229B  LYS*     1.3    64.1    +      -       -      +
    230B  TYR*     3.8     6.5    +      -       -      +
    231B  GLY*     2.9    28.6    +      -       -      -
    232B  ALA*     3.1    22.5    +      -       -      +
    422B  C5P      3.1     9.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  ALA*     3.6    27.9    +      -       -      +
    286A  TYR*     3.6    50.8    +      -       +      +
    287A  MET*     5.3     4.4    -      -       -      +
    288A  ARG*     5.3     5.6    -      -       -      +
    228B  SER*     1.3    72.4    -      -       -      +
    230B  TYR*     1.3    62.2    +      -       -      +
    232B  ALA*     3.3     7.0    +      -       -      +
    233B  TRP*     3.0    22.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 230 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  TYR*     3.2    17.8    +      -       -      +
    336A  ILE*     3.0    23.4    +      -       -      +
    339A  LEU*     3.5    26.9    -      -       +      +
    340A  ARG*     3.5    29.7    -      -       +      +
    175B  ASN*     4.0    13.9    -      -       -      -
    228B  SER*     3.3     6.1    +      -       -      +
    229B  LYS*     1.3    78.2    -      -       -      +
    231B  GLY*     1.3    54.4    +      -       -      +
    233B  TRP*     3.2    17.5    +      +       -      +
    234B  LEU*     2.7    65.9    +      -       +      +
    407B  MPG      3.5    30.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 231 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175B  ASN*     3.4    15.3    -      -       -      -
    228B  SER*     2.9    16.5    +      -       -      -
    230B  TYR*     1.3    78.2    -      -       -      +
    232B  ALA*     1.3    56.2    +      -       -      +
    234B  LEU*     4.0     1.9    -      -       -      +
    235B  ASP*     3.0    31.4    +      -       -      +
    422B  C5P      3.2    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 232 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281A  LYS*     3.6    15.3    +      -       -      +
    285A  ALA*     4.5    10.3    -      -       +      -
    228B  SER      3.1    11.5    +      -       -      +
    229B  LYS*     3.7     8.3    -      -       -      +
    231B  GLY*     1.3    72.1    -      -       -      +
    233B  TRP*     1.3    65.3    +      -       -      +
    235B  ASP*     3.9     1.7    -      -       -      +
    236B  GLY      3.3    16.3    +      -       -      -
    422B  C5P      3.3    41.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 233 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278A  THR*     3.0    42.2    +      -       +      +
    281A  LYS*     3.6    18.9    -      -       +      +
    282A  PHE*     3.4    31.8    -      -       +      +
    285A  ALA*     4.2     4.6    -      -       +      +
    286A  TYR*     4.2    13.2    -      +       +      -
    335A  ARG*     4.0     2.9    -      -       +      -
    336A  ILE*     3.7    47.3    -      -       +      -
    339A  LEU*     3.5    23.8    -      -       +      +
    229B  LYS      3.0    16.7    +      -       -      +
    230B  TYR*     3.6    24.5    -      +       -      +
    232B  ALA*     1.3    77.8    -      -       -      +
    234B  LEU*     1.3    78.0    +      -       +      +
    236B  GLY*     3.3     2.9    +      -       -      -
    237B  VAL*     2.9    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 234 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    336A  ILE*     4.0    19.7    -      -       +      -
    175B  ASN*     4.5    10.8    -      -       -      +
    178B  THR*     4.2    15.3    -      -       +      -
    179B  VAL*     4.5     5.2    -      -       +      -
    230B  TYR*     2.7    57.2    +      -       +      +
    231B  GLY      4.0     2.7    -      -       -      +
    233B  TRP*     1.3    82.4    -      -       +      +
    235B  ASP*     1.3    58.6    +      -       -      +
    237B  VAL*     4.4     2.5    -      -       +      -
    238B  LEU*     2.8    57.4    +      -       +      +
    407B  MPG      4.1    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 235 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178B  THR*     3.7    12.5    -      -       +      +
    214B  ASP*     3.1    12.0    -      -       -      +
    217B  ASP*     2.9    15.5    -      -       -      +
    231B  GLY      3.0    19.5    +      -       -      +
    232B  ALA*     3.9     4.5    -      -       -      +
    233B  TRP      3.3     0.2    -      -       -      -
    234B  LEU*     1.3    77.6    -      -       -      +
    236B  GLY*     1.3    62.3    +      -       -      +
    238B  LEU*     4.0     0.7    -      -       -      +
    239B  ASP*     3.0    37.1    +      -       -      +
    401B   CA      2.3    30.6    -      -       -      -
    422B  C5P      3.3    28.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 236 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277A  TYR*     3.6    18.6    -      -       -      -
    281A  LYS*     4.2     7.9    -      -       -      -
    232B  ALA      3.3    11.5    +      -       -      -
    233B  TRP      3.7     2.7    -      -       -      -
    234B  LEU      3.3     0.4    -      -       -      -
    235B  ASP*     1.3    78.7    -      -       -      +
    237B  VAL*     1.3    61.2    +      -       -      +
    239B  ASP*     3.3     2.3    +      -       -      -
    240B  ARG*     3.2    37.6    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
    274A  MET*     4.1     6.1    -      -       +      -
    277A  TYR*     3.8    18.1    -      -       +      -
    278A  THR*     4.0    12.6    -      -       +      -
    336A  ILE*     4.0    21.5    -      -       +      -
    233B  TRP*     2.9    53.3    +      -       +      +
    234B  LEU*     3.7     6.5    -      -       +      +
    236B  GLY*     1.3    75.3    -      -       -      +
    238B  LEU*     1.3    65.3    +      -       +      +
    240B  ARG*     3.1     6.8    +      -       -      +
    241B  TYR*     3.1    42.3    +      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    336A  ILE*     4.6    10.8    -      -       +      -
    178B  THR*     4.1    16.6    -      -       +      +
    179B  VAL*     4.6     5.6    -      -       +      -
    182B  PHE*     3.7    48.5    -      -       +      -
    234B  LEU*     2.8    51.5    +      -       +      +
    235B  ASP      4.3     2.0    -      -       -      +
    237B  VAL*     1.3    71.7    -      -       +      +
    239B  ASP*     1.3    63.7    +      -       -      +
    241B  TYR*     3.2    14.1    +      -       +      +
    242B  SER*     2.8    32.8    +      -       -      -
    407B  MPG      4.5    19.1    -      -       +      -
    412B  MPG      4.6     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 239 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178B  THR*     5.9     0.2    -      -       -      +
    210B  HIS*     4.8     3.5    -      -       -      -
    214B  ASP*     3.0    34.9    -      -       -      +
    235B  ASP*     3.0    31.8    +      -       -      +
    236B  GLY*     3.6     6.3    -      -       -      +
    237B  VAL      3.2     0.4    -      -       -      -
    238B  LEU*     1.3    79.5    -      -       -      +
    240B  ARG*     1.3    77.1    +      -       -      +
    242B  SER*     3.4     1.2    +      -       -      -
    243B  ASP*     2.9    35.3    +      -       -      +
    301B  ARG*     3.5    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 240 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270A  PHE*     4.1     2.0    -      -       -      -
    274A  MET*     3.7    22.7    -      -       +      -
    277A  TYR*     3.3    37.4    +      -       +      -
    146B  TYR*     3.8    12.1    +      -       -      -
    236B  GLY*     3.2    29.8    +      -       -      +
    237B  VAL      3.1     9.8    +      -       -      +
    239B  ASP*     1.3    86.0    +      -       -      +
    241B  TYR*     1.3    65.2    +      -       -      +
    243B  ASP*     3.3    22.8    +      -       -      -
    244B  PHE*     3.1    20.4    +      -       -      +
    272B  SER      5.2     0.4    +      -       -      -
    273B  LEU*     3.5    30.3    -      -       +      +
    276B  ALA*     3.2    27.4    -      -       +      +
    301B  ARG*     3.6    13.9    -      -       -      +
    419B  SO4      3.1    21.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 241 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270A  PHE*     3.6    31.7    -      +       -      -
    274A  MET*     3.8    21.8    -      -       +      -
    278A  THR*     5.8     0.2    -      -       +      -
    329A  ASN*     4.5     7.6    +      -       -      -
    332A  ALA*     3.3    28.4    -      -       +      +
    333A  LEU*     4.2     7.4    +      -       -      +
    336A  ILE*     4.0    14.0    -      -       +      +
    182B  PHE*     3.6    15.7    -      +       +      -
    237B  VAL*     3.1    38.9    +      -       +      -
    238B  LEU*     3.2    13.7    +      -       +      +
    240B  ARG*     1.3    75.6    -      -       -      +
    242B  SER*     1.3    58.1    +      -       -      +
    244B  PHE*     3.7     0.9    -      -       -      +
    245B  ILE*     2.9    45.6    +      -       +      +
    412B  MPG      3.9    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 242 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  PHE*     3.2    11.9    -      -       -      -
    185B  SER*     2.7    35.0    +      -       -      -
    210B  HIS*     4.0     6.6    -      -       -      -
    238B  LEU      2.8    18.3    +      -       -      -
    239B  ASP*     4.3     0.4    -      -       -      -
    240B  ARG      3.3     0.2    -      -       -      -
    241B  TYR*     1.3    76.7    -      -       -      +
    243B  ASP*     1.3    56.7    +      -       -      +
    245B  ILE*     3.3     3.7    +      -       -      +
    246B  ILE*     2.9    38.3    +      -       -      +
    301B  ARG*     3.3    22.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 243 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239B  ASP      2.9    16.3    +      -       -      +
    240B  ARG*     3.3    18.0    +      -       -      +
    242B  SER*     1.3    74.5    -      -       -      +
    244B  PHE*     1.3    62.1    +      -       -      +
    246B  ILE*     4.0     5.0    -      -       -      +
    247B  VAL*     3.3    29.6    +      -       -      +
    269B  ALA*     6.0     0.2    -      -       -      -
    272B  SER*     4.2    19.9    -      -       -      +
    273B  LEU*     4.6     3.6    -      -       +      -
    301B  ARG*     2.8    34.4    +      -       -      +
    304B  ARG*     2.9    32.5    +      -       -      -
    305B  LEU*     4.2     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 244 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  PHE*     3.3    37.5    -      +       -      -
    267A  LEU*     4.4     9.2    -      -       +      -
    270A  PHE*     3.3    60.8    -      +       +      -
    240B  ARG      3.1    17.1    +      -       -      +
    241B  TYR      3.7     0.9    -      -       -      +
    243B  ASP*     1.3    75.1    -      -       -      +
    245B  ILE*     1.3    73.2    +      -       +      +
    247B  VAL*     3.3     5.1    +      -       -      +
    248B  PHE*     2.8    62.5    +      +       -      +
    269B  ALA*     4.3    17.0    -      -       +      +
    273B  LEU*     4.5    11.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 245 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  PHE*     4.4     6.1    -      -       +      -
    185B  SER      5.8     0.2    -      -       -      -
    186B  LEU*     3.7    30.7    -      -       +      -
    189B  SER*     3.5    22.0    -      -       -      +
    241B  TYR*     2.9    33.3    +      -       +      +
    242B  SER*     4.0     3.1    -      -       -      +
    244B  PHE*     1.3    86.0    -      -       +      +
    246B  ILE*     1.3    65.5    +      -       -      +
    248B  PHE*     3.6     8.9    -      -       +      +
    249B  SER*     3.0    29.0    +      -       -      +
    411B  MPG      4.1    14.1    -      -       +      -
    412B  MPG      4.2    24.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 246 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185B  SER*     4.3    13.2    -      -       -      +
    189B  SER*     3.3    17.7    -      -       -      +
    192B  PHE*     4.2    13.4    -      -       +      -
    207B  ILE*     3.8    23.8    -      -       +      -
    210B  HIS*     4.8     2.7    -      -       +      -
    242B  SER*     2.9    29.5    +      -       -      +
    243B  ASP*     4.0     5.6    -      -       -      +
    245B  ILE*     1.3    77.8    -      -       -      +
    247B  VAL*     1.3    61.8    +      -       -      +
    249B  SER*     3.3     2.6    +      -       -      -
    250B  ILE*     3.2    34.1    +      -       +      +
    305B  LEU*     4.2    22.9    -      -       +      -
    308B  ILE*     3.9    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 247 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  PHE*     4.9     1.1    -      -       +      -
    243B  ASP      3.3    17.4    +      -       -      +
    244B  PHE      3.3     4.1    +      -       -      +
    246B  ILE*     1.3    76.5    -      -       +      +
    248B  PHE*     1.3    59.6    +      -       -      +
    250B  ILE*     3.3     2.1    +      -       +      +
    251B  THR*     2.7    45.0    +      -       -      +
    265B  GLY      3.4    26.0    -      -       -      +
    268B  ALA*     4.2     4.3    -      -       +      -
    269B  ALA*     3.9    22.7    -      -       +      +
    272B  SER*     4.6    10.3    -      -       -      +
    308B  ILE*     5.3     8.3    -      -       +      -
    321B  LEU*     3.9    25.6    -      -       +      -
    324B  ILE*     5.5     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 248 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263A  ILE*     3.9    27.8    -      -       +      -
    266A  PHE*     4.0    27.3    -      +       +      -
    267A  LEU*     4.1    19.3    -      -       +      -
    244B  PHE*     2.8    51.1    +      +       +      +
    245B  ILE*     3.6    10.8    -      -       +      +
    246B  ILE      3.3     0.2    -      -       -      -
    247B  VAL*     1.3    73.5    -      -       -      +
    249B  SER*     1.3    56.4    +      -       -      +
    251B  THR*     3.6     2.8    -      -       -      -
    252B  TYR*     2.8    33.8    +      +       +      +
    262B  TRP*     3.9    30.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with SER 249 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  SER*     3.4    37.5    +      -       -      -
    192B  PHE*     4.2     7.9    -      -       -      -
    193B  LEU*     4.1    13.8    -      -       -      +
    245B  ILE*     3.0    18.7    +      -       -      +
    246B  ILE      3.6     4.7    -      -       -      -
    248B  PHE*     1.3    74.2    -      -       -      +
    250B  ILE*     1.3    65.7    +      -       -      +
    252B  TYR*     3.4     3.4    +      -       -      +
    253B  VAL*     3.2    27.7    +      -       -      +
    411B  MPG      3.8    13.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 250 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  PHE*     3.8    46.7    -      -       +      -
    246B  ILE*     3.2    25.8    +      -       +      +
    247B  VAL*     3.8     3.4    -      -       -      +
    249B  SER*     1.3    76.0    -      -       -      +
    251B  THR*     1.3    63.4    +      -       -      +
    253B  VAL*     3.4     4.4    +      -       -      +
    254B  LEU*     3.1    43.1    +      -       +      +
    308B  ILE*     4.3    14.4    -      -       +      -
    317B  PRO*     3.8    24.5    -      -       +      +
    320B  ALA*     5.6     1.1    -      -       +      -
    321B  LEU*     3.9    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 251 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  PHE*     4.2     3.8    -      -       +      -
    247B  VAL*     2.7    26.3    +      -       -      +
    248B  PHE*     3.6     6.1    -      -       -      -
    250B  ILE*     1.3    77.6    -      -       -      +
    252B  TYR*     1.3    56.2    +      -       -      +
    254B  LEU*     3.3     4.0    +      -       -      +
    255B  SER*     2.9    28.8    +      -       -      -
    261B  TYR*     3.4    23.9    -      -       -      +
    262B  TRP*     3.5    33.9    -      -       +      -
    265B  GLY*     3.2    24.5    -      -       -      -
    321B  LEU*     3.6    12.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 252 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263A  ILE*     4.1    24.3    -      -       +      +
    193B  LEU*     3.9    18.6    -      -       +      -
    248B  PHE*     2.8    28.1    +      +       +      +
    249B  SER*     3.7     6.3    -      -       -      +
    250B  ILE      3.3     0.2    -      -       -      -
    251B  THR*     1.3    74.0    -      -       -      +
    253B  VAL*     1.3    63.5    +      -       +      +
    255B  SER*     2.8    22.6    +      -       -      -
    256B  ALA*     3.9     3.3    +      -       -      +
    262B  TRP*     4.0    26.4    -      +       +      -
    415B  MPG      3.7    28.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 253 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  PHE*     3.4    24.0    -      -       +      +
    193B  LEU*     3.7    24.0    -      -       +      +
    195B  ASN*     3.5    35.5    +      -       +      +
    249B  SER      3.2    13.9    +      -       -      +
    250B  ILE*     3.8     8.3    -      -       -      +
    252B  TYR*     1.3    79.2    -      -       +      +
    254B  LEU*     1.3    69.5    +      -       +      +
    255B  SER      3.3     0.7    +      -       -      -
    256B  ALA*     3.3    20.1    +      -       -      +
    257B  SER*     4.3     1.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 254 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250B  ILE*     3.1    35.6    +      -       +      +
    251B  THR      3.8     3.4    -      -       -      +
    253B  VAL*     1.3    81.7    -      -       +      +
    255B  SER*     1.3    58.1    +      -       -      +
    257B  SER*     3.0    26.3    +      -       -      +
    258B  ASN      3.1    12.4    +      -       -      +
    261B  TYR*     3.9    28.3    -      -       +      -
    317B  PRO*     5.1     7.6    -      -       +      -
    318B  SER*     3.5    45.1    -      -       -      +
    321B  LEU*     3.9    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 255 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  THR      2.9    15.4    +      -       -      -
    252B  TYR*     2.8    21.8    +      -       -      -
    254B  LEU*     1.3    76.0    -      -       -      +
    256B  ALA*     1.3    62.2    +      -       -      +
    257B  SER      3.3     0.2    +      -       -      -
    258B  ASN      3.4    22.9    +      -       -      -
    259B  PRO*     3.6     9.2    -      -       -      +
    261B  TYR*     4.5     1.8    -      -       -      +
    262B  TRP*     3.1    46.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 256 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252B  TYR      4.8     2.7    -      -       -      +
    253B  VAL      3.3    13.8    +      -       -      +
    254B  LEU      3.1     0.4    -      -       -      -
    255B  SER*     1.3    82.0    +      -       -      +
    257B  SER*     1.3    60.4    +      -       -      +
    259B  PRO*     5.8     0.5    -      -       -      +
----------------------------------------------------------
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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