Contacts of the helix formed by residues 187 - 210 (chain B) in PDB entry 3RFU


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 TYR 187 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159B  ALA*     4.8    11.9    -      -       +      +
    162B  TYR*     3.1    52.0    +      +       -      -
    163B  SER*     3.8     6.8    -      -       -      -
    185B  ALA*     4.6     5.1    -      -       +      +
    186B  VAL*     1.3    72.6    -      -       -      +
    188B  PHE*     1.3    66.4    +      -       -      +
    189B  GLU*     3.1     3.4    -      -       -      +
    190B  ALA*     2.8    23.3    +      -       +      +
    191B  ALA*     3.0    11.0    +      -       -      +
    375B  VAL*     6.2     0.2    -      -       +      -
    376B  SER*     4.5     5.2    +      -       -      -
    379B  ILE*     4.4    30.3    -      -       +      -
    708B  LEU*     2.7    45.3    +      -       +      +
    709B  SER      3.7     1.8    -      -       -      -
    710B  PRO*     3.2    46.8    -      -       +      +
    713B  ALA*     4.8     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  VAL*     4.5     0.9    -      -       +      -
    115B  SER      3.9     2.0    -      -       -      -
    118B  GLN*     3.8    13.2    -      -       +      +
    119B  LEU*     3.3    40.6    -      -       +      -
    122B  ALA*     3.7    25.8    -      -       +      +
    160B  TRP*     3.6    31.9    -      +       +      -
    163B  SER*     2.8    32.3    +      -       -      -
    164B  MET*     3.2    31.6    -      -       +      -
    167B  VAL*     3.8     9.2    -      -       +      -
    186B  VAL*     3.2    21.9    -      -       +      -
    187B  TYR*     1.3    76.5    -      -       -      +
    189B  GLU*     1.3    64.4    +      -       -      +
    191B  ALA*     3.0     7.7    +      -       +      +
    192B  ALA*     2.9    24.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 189 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  VAL*     3.9    14.4    -      -       +      +
     96B  VAL*     4.0    37.2    -      -       +      +
     99B  GLU*     3.9    34.9    -      -       +      +
    100B  MET*     3.8    23.0    -      -       -      +
    118B  GLN*     4.6     2.0    -      -       -      +
    186B  VAL      4.8     1.1    +      -       -      +
    187B  TYR*     3.1     1.5    -      -       -      +
    188B  PHE*     1.3    78.3    -      -       -      +
    190B  ALA*     1.3    65.4    +      -       -      +
    192B  ALA*     3.5     0.9    +      -       -      +
    193B  VAL*     3.0    26.7    +      -       +      +
    710B  PRO*     4.6     9.1    -      -       +      +
    714B  ALA*     3.9    18.8    -      -       -      +
    717B  MET*     4.4    12.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 190 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187B  TYR*     2.8    22.7    +      -       +      +
    189B  GLU*     1.3    81.8    +      -       -      +
    191B  ALA*     1.3    62.9    +      -       -      +
    193B  VAL*     4.1     0.3    -      -       -      +
    194B  ILE*     3.0    36.3    +      -       +      +
    379B  ILE*     4.0    22.7    -      -       +      -
    710B  PRO*     6.2     0.9    -      -       +      +
    713B  ALA*     5.0    11.4    -      -       +      -
    717B  MET*     4.2    15.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 191 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122B  ALA*     5.4     0.4    -      -       +      -
    126B  VAL*     3.5    21.1    -      -       +      -
    156B  ILE*     3.6    17.1    -      -       +      +
    159B  ALA*     4.4    18.7    -      -       +      +
    160B  TRP*     4.9     6.7    -      -       +      +
    187B  TYR      3.0     9.7    +      -       -      +
    188B  PHE*     3.4    13.9    -      -       +      +
    190B  ALA*     1.3    76.5    -      -       -      +
    192B  ALA*     1.3    64.1    -      -       -      +
    194B  ILE*     4.9     0.2    -      -       -      -
    195B  THR*     2.9    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 192 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  THR*     3.3    26.9    -      -       +      +
     95B  VAL*     4.6     6.7    -      -       +      -
    122B  ALA*     4.4     6.3    -      -       +      -
    125B  VAL*     3.5    25.6    -      -       +      -
    126B  VAL*     4.2     0.8    -      -       -      +
    188B  PHE      2.9    15.8    +      -       -      +
    189B  GLU      3.9     2.7    -      -       -      +
    191B  ALA*     1.3    75.0    -      -       -      +
    193B  VAL*     1.3    64.8    +      -       -      +
    195B  THR*     2.8    18.9    +      -       -      -
    196B  THR*     2.9    13.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 193 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  THR*     4.0     7.4    -      -       +      -
     96B  VAL*     3.9    28.3    -      -       +      -
    189B  GLU*     3.0    15.6    +      -       +      +
    192B  ALA*     1.3    78.9    -      -       -      +
    194B  ILE*     1.3    67.8    +      -       -      +
    196B  THR*     3.4     5.9    +      -       -      +
    197B  LEU*     3.0    47.2    +      -       +      +
    384B  CYS*     4.5     2.0    -      -       +      -
    717B  MET*     3.3    36.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 194 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152B  ILE*     4.8     4.7    -      -       +      -
    156B  ILE*     3.4    28.0    -      -       +      -
    190B  ALA*     3.0    38.1    +      -       +      +
    193B  VAL*     1.3    77.0    -      -       -      +
    195B  THR*     1.3    58.3    +      -       -      +
    197B  LEU*     3.8     1.9    -      -       -      +
    198B  VAL*     2.9    33.1    +      -       +      +
    379B  ILE*     4.7     9.0    -      -       +      +
    382B  CYS*     3.7    38.8    -      -       +      +
    383B  PRO      4.7     2.0    -      -       -      +
    384B  CYS*     3.7    33.4    -      -       +      +
    717B  MET*     4.2    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 195 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  ALA*     5.1     0.3    -      -       -      +
    125B  VAL*     3.2    25.8    +      -       -      +
    126B  VAL*     4.0     8.3    -      -       +      -
    130B  GLY*     4.7     9.9    -      -       -      -
    133B  PHE*     3.6     7.8    -      -       +      -
    156B  ILE*     3.5    35.0    -      -       +      -
    191B  ALA      2.9    16.5    +      -       -      +
    192B  ALA*     2.8    17.7    +      -       -      -
    194B  ILE*     1.3    76.2    -      -       -      +
    196B  THR*     1.3    56.3    +      -       -      +
    198B  VAL*     3.0    12.1    -      -       -      +
    199B  LEU*     3.0    34.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 196 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85B  PHE*     3.4    18.8    -      -       -      -
     88B  ALA*     3.4    27.4    -      -       +      -
     89B  LEU*     4.3    15.8    -      -       -      +
     92B  THR*     3.1    28.2    -      -       -      +
    125B  VAL*     3.7     3.4    -      -       +      -
    192B  ALA      2.9    17.2    +      -       -      +
    193B  VAL*     3.5     8.5    +      -       -      +
    195B  THR*     1.3    75.6    -      -       -      +
    197B  LEU*     1.3    71.4    +      -       -      +
    199B  LEU*     3.6     8.2    -      -       -      +
    200B  LEU*     3.0    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 197 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89B  LEU*     6.6     0.2    -      -       +      -
    193B  VAL*     3.0    39.2    +      -       +      +
    194B  ILE      3.8     3.1    -      -       -      +
    196B  THR*     1.3    86.0    +      -       -      +
    198B  VAL*     1.3    59.7    +      -       -      +
    200B  LEU*     3.2    14.3    -      -       +      +
    201B  GLY      3.0    20.1    +      -       -      -
    384B  CYS*     3.4    44.6    -      -       +      +
    385B  ALA*     4.8     0.4    -      -       -      +
    387B  GLY      4.9     0.2    -      -       -      -
    388B  LEU*     3.5    27.1    -      -       +      +
    721B  SER*     3.8    13.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 198 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  PHE*     3.1    37.0    -      -       +      -
    148B  MET*     5.1     2.2    -      -       -      -
    149B  PHE*     5.0     5.6    -      -       +      -
    152B  ILE*     3.3    34.5    -      -       +      -
    194B  ILE      2.9    21.2    +      -       -      +
    195B  THR*     3.0    20.0    -      -       -      +
    197B  LEU*     1.3    74.0    -      -       -      +
    199B  LEU*     1.3    63.4    +      -       -      +
    201B  GLY*     3.0     3.2    +      -       -      +
    202B  GLN*     3.0    28.3    +      -       -      +
    384B  CYS      4.3     8.4    +      -       -      +
    387B  GLY*     4.6    12.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 199 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81B  MET*     3.9    19.4    -      -       +      +
     84B  ARG*     3.9    38.6    -      -       +      -
     85B  PHE*     4.0    21.5    -      -       +      -
     88B  ALA*     4.2    16.8    -      -       +      -
    129B  GLY      4.0    12.1    -      -       -      +
    130B  GLY      4.2     6.7    -      -       -      +
    132B  PRO*     5.4     1.1    -      -       +      -
    133B  PHE*     3.5    22.2    -      -       +      -
    195B  THR*     3.0    26.2    +      -       -      +
    196B  THR*     3.6     6.1    -      -       -      +
    197B  LEU      3.2     0.2    -      -       -      -
    198B  VAL*     1.3    73.7    -      -       -      +
    200B  LEU*     1.3    65.9    +      -       -      +
    202B  GLN*     3.1     6.4    +      -       -      +
    203B  VAL*     3.0    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 200 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85B  PHE*     3.4    42.6    -      -       +      -
    196B  THR      3.0     9.3    +      -       -      +
    197B  LEU*     3.2    19.7    -      -       +      +
    199B  LEU*     1.3    76.2    -      -       -      +
    201B  GLY*     1.3    59.4    +      -       -      +
    203B  VAL*     3.3     9.1    +      -       +      +
    204B  LEU*     3.0    48.1    +      -       +      +
    388B  LEU*     3.8    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 201 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197B  LEU      3.0    10.1    +      -       -      -
    198B  VAL      3.0     7.2    +      -       -      -
    200B  LEU*     1.3    78.2    -      -       -      +
    202B  GLN*     1.3    60.5    +      -       -      +
    204B  LEU*     3.5     2.2    +      -       -      +
    205B  GLU*     3.0    30.8    +      -       -      +
    387B  GLY*     2.9    32.1    -      -       -      +
    388B  LEU*     3.7     5.6    -      -       -      +
    391B  PRO*     4.2     4.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 202 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81B  MET*     4.0    26.5    -      -       +      +
    133B  PHE*     4.0    18.3    -      -       +      -
    136B  ARG*     4.4    13.9    +      -       -      -
    148B  MET*     4.4     8.1    -      -       -      +
    149B  PHE*     3.8    33.5    -      -       -      -
    198B  VAL*     3.0    23.6    +      -       -      +
    199B  LEU*     3.4     7.9    -      -       -      +
    201B  GLY*     1.3    76.5    -      -       -      +
    203B  VAL*     1.3    66.1    +      -       -      +
    205B  GLU*     3.8    24.0    +      -       -      +
    206B  LEU*     3.0    36.2    +      -       +      +
    387B  GLY*     5.6     1.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 203 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  TYR*     3.5    26.8    -      -       +      +
     81B  MET*     3.9     8.5    -      -       +      -
     82B  ARG*     3.9    36.6    -      -       +      +
     85B  PHE*     4.3    15.5    -      -       +      -
    199B  LEU      3.0    17.4    +      -       -      +
    200B  LEU*     3.5    14.8    -      -       +      +
    202B  GLN*     1.3    76.0    -      -       -      +
    204B  LEU*     1.3    69.1    +      -       +      +
    207B  LYS*     3.0    30.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 204 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200B  LEU*     3.0    31.9    +      -       +      +
    201B  GLY      3.9     1.1    -      -       -      +
    203B  VAL*     1.3    85.9    -      -       +      +
    205B  GLU*     1.3    64.2    +      -       -      +
    207B  LYS*     3.4    25.5    +      -       -      +
    208B  ALA*     3.0    24.9    +      -       -      +
    388B  LEU*     4.5    14.4    -      -       +      -
    391B  PRO*     3.9    17.1    -      -       +      +
    392B  MET*     4.5    19.3    -      -       +      -
    395B  MET*     4.4    25.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 205 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148B  MET*     5.4     4.7    -      -       -      +
    201B  GLY      3.0    17.8    +      -       -      +
    202B  GLN*     3.8    25.6    +      -       -      +
    204B  LEU*     1.3    75.8    -      -       -      +
    206B  LEU*     1.3    76.0    +      -       +      +
    208B  ALA*     3.2     3.3    +      -       -      +
    209B  ARG*     3.0    55.9    +      -       -      +
    334B  ARG*     3.5    32.9    +      -       -      -
    391B  PRO*     4.0    12.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 206 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75B  SER*     5.2     0.7    -      -       -      +
     77B  GLU*     4.2    24.2    -      -       +      +
     78B  TYR*     3.2    52.3    -      -       +      +
     81B  MET*     4.3    14.1    -      -       +      -
    202B  GLN*     3.0    28.3    +      -       +      +
    205B  GLU*     1.3    91.2    -      -       +      +
    207B  LYS*     1.3    54.6    +      -       -      +
    209B  ARG*     3.0     4.3    +      -       +      +
    210B  GLU*     2.6    41.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 207 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78B  TYR*     3.8    22.3    -      -       +      +
    203B  VAL*     3.0    21.0    +      -       +      +
    204B  LEU*     3.9    26.3    -      -       -      +
    206B  LEU*     1.3    76.1    -      -       -      +
    208B  ALA*     1.3    59.3    +      -       -      +
    210B  GLU*     3.9    21.5    +      -       -      +
    211B  GLN*     4.3     6.2    +      -       -      +
    395B  MET*     6.0     6.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204B  LEU      3.0    17.7    +      -       -      +
    205B  GLU*     3.5     6.7    -      -       -      +
    206B  LEU      3.0     1.0    -      -       -      -
    207B  LYS*     1.3    79.6    -      -       -      +
    209B  ARG*     1.3    65.3    +      -       +      +
    210B  GLU      3.5     0.7    -      -       -      -
    211B  GLN*     5.6     0.4    -      -       -      -
    391B  PRO*     5.3     4.5    -      -       +      +
    394B  ILE*     4.5    21.8    -      -       +      +
    395B  MET*     5.3     9.9    -      -       +      -
    398B  VAL*     6.5     0.7    -      -       +      -
    409B  LYS      5.7     0.5    -      -       -      -
    410B  ASN*     4.8     9.7    -      -       -      -
    411B  ALA*     4.8     1.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 209 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    205B  GLU*     3.0    46.9    +      -       -      +
    206B  LEU*     3.0     6.0    +      -       +      +
    208B  ALA*     1.3    84.2    -      -       +      +
    210B  GLU*     1.3    63.7    +      -       -      +
    211B  GLN      3.8     4.6    -      -       -      +
    212B  THR*     5.0     4.5    -      -       -      +
    334B  ARG*     3.0    34.6    -      -       -      +
    390B  THR*     4.1    14.6    -      -       -      +
    391B  PRO*     4.9     6.1    -      -       -      +
    394B  ILE*     4.2     9.1    -      -       -      +
    410B  ASN*     5.5     5.8    -      -       +      +
    411B  ALA*     3.5    31.6    -      -       +      +
    412B  GLU*     4.1    17.8    +      -       -      +
    415B  GLU*     3.3    24.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 210 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  VAL*     4.2     9.6    +      -       -      +
     75B  SER*     3.6    38.7    +      -       -      +
     78B  TYR*     4.3    22.6    -      -       +      -
     79B  LEU*     5.3     0.7    -      -       -      +
    206B  LEU*     2.6    21.4    +      -       +      +
    207B  LYS*     3.9    19.1    -      -       -      +
    208B  ALA      3.5     2.0    -      -       -      -
    209B  ARG*     1.3    76.2    -      -       -      +
    211B  GLN*     1.3    88.5    +      -       -      +
    212B  THR*     3.1    14.2    +      -       -      +
----------------------------------------------------------
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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