Contacts of the helix formed by residues 216 - 242 (chain D) in PDB entry 5MKF


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 216 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215D  LYS*     1.3    87.4    -      -       +      +
    217D  LEU*     1.3    50.6    +      -       +      +
    219D  SER*     2.7    20.2    +      -       -      -
    220D  VAL*     2.4    48.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 217 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215D  LYS*     3.1    35.5    -      -       +      +
    216D  TYR*     1.3    78.3    -      -       +      +
    218D  LYS*     1.3    56.9    +      -       -      +
    220D  VAL*     3.6    19.6    -      -       +      +
    221D  LEU*     2.9    39.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 218 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215D  LYS      3.3    15.6    +      -       -      +
    216D  TYR      2.9     0.8    +      -       -      -
    217D  LEU*     1.3    78.8    -      -       -      +
    219D  SER*     1.3    57.4    +      -       -      +
    221D  LEU*     3.8    16.1    -      -       +      +
    222D  ARG*     2.9    58.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 219 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215D  LYS      3.9     2.2    +      -       -      -
    216D  TYR*     2.7    38.1    +      -       -      +
    218D  LYS*     1.3    74.1    -      -       -      +
    220D  VAL*     1.3    65.3    +      -       -      +
    222D  ARG*     4.1     6.1    -      -       -      -
    223D  GLU*     3.7    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 220 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216D  TYR*     2.4    49.7    +      -       +      +
    217D  LEU*     3.6    21.5    -      -       +      +
    219D  SER*     1.3    71.5    -      -       -      +
    221D  LEU*     1.3    63.5    +      -       +      +
    223D  GLU*     4.1     1.6    -      -       -      +
    224D  LEU*     2.9    44.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 221 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    217D  LEU*     2.9    33.4    +      -       +      +
    218D  LYS*     3.8    18.2    -      -       +      +
    220D  VAL*     1.3    73.4    -      -       +      +
    222D  ARG*     1.3    74.9    +      -       +      +
    224D  LEU*     2.8    12.8    +      -       +      -
    225D  VAL*     2.2    60.2    +      -       +      +
    228D  LEU*     5.9     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 222 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218D  LYS*     2.9    43.2    +      -       -      +
    219D  SER*     4.4     5.2    -      -       -      -
    221D  LEU*     1.3    83.6    -      -       +      +
    223D  GLU*     1.3    66.5    +      -       +      +
    225D  VAL*     3.2    12.6    +      -       -      +
    226D  THR*     3.1    59.3    +      -       -      +
    486D  TYR*     5.2    14.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 223 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219D  SER*     3.7    21.5    +      -       -      +
    220D  VAL      4.2     1.3    -      -       -      +
    221D  LEU      3.4     0.4    -      -       -      -
    222D  ARG*     1.3    80.6    -      -       +      +
    224D  LEU*     1.3    59.3    +      -       +      +
    226D  THR*     2.1    29.9    +      -       -      -
    227D  TYR*     3.1    16.7    -      -       +      -
    486D  TYR*     6.2     0.7    -      -       +      +
    487D  TYR*     3.6    17.6    -      -       +      +
    490D  GLU*     4.9    11.1    -      -       -      +
    576D  PHE*     6.2     0.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 224 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220D  VAL*     2.9    42.4    +      -       +      +
    221D  LEU*     2.8    12.0    +      -       +      +
    223D  GLU*     1.3    75.6    -      -       +      +
    225D  VAL*     1.3    56.8    +      -       -      +
    227D  TYR*     2.7    10.1    +      -       +      +
    228D  LEU*     2.3    55.8    +      -       +      -
    576D  PHE*     3.8    32.1    -      -       +      -
    577D  ILE*     3.5    36.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 225 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221D  LEU*     2.2    62.8    +      -       +      +
    222D  ARG*     3.6    14.8    -      -       -      +
    224D  LEU*     1.3    65.2    -      -       -      +
    226D  THR*     1.3    56.9    +      -       -      +
    228D  LEU*     3.9    13.7    -      -       +      -
    229D  LEU*     2.7    42.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 226 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222D  ARG*     3.1    35.4    +      -       -      +
    223D  GLU*     2.1    31.3    +      -       -      -
    225D  VAL*     1.3    76.4    -      -       -      +
    227D  TYR*     1.3    52.8    +      -       -      -
    229D  LEU*     3.3     3.2    -      -       -      +
    230D  PHE*     2.4    36.2    +      -       -      +
    483D  PHE*     3.5    32.5    -      -       +      -
    486D  TYR*     5.0     8.3    -      -       +      +
    487D  TYR*     2.6    23.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 227 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223D  GLU*     3.1    23.8    -      -       +      -
    224D  LEU*     2.7    14.5    +      -       +      +
    226D  THR*     1.3    79.1    +      -       -      +
    228D  LEU*     1.3    57.2    +      -       +      +
    230D  PHE*     3.6    26.4    -      +       +      -
    231D  LEU*     2.6    38.1    +      -       -      +
    483D  PHE*     5.2     1.8    -      +       -      -
    487D  TYR*     3.3    39.0    -      +       -      +
    491D  GLU*     2.9    26.3    +      -       -      -
    514D  ILE*     5.3    10.8    -      -       +      -
    569D  VAL*     5.9     3.4    -      -       +      -
    572D  LYS*     4.6    35.6    +      -       +      -
    576D  PHE*     5.9     6.1    -      +       +      -
----------------------------------------------------------
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Residues in contact with LEU 228 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221D  LEU*     5.7     1.6    -      -       +      -
    224D  LEU*     2.3    62.9    +      -       +      +
    225D  VAL*     3.9    12.3    -      -       +      +
    227D  TYR*     1.3    67.9    -      -       +      +
    229D  LEU*     1.3    56.8    +      -       -      +
    231D  LEU*     3.1    23.7    -      -       +      +
    232D  ILE*     3.0    24.3    -      -       -      +
    573D  LEU*     6.2     2.9    -      -       +      -
    577D  ILE*     4.2    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 229 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225D  VAL*     2.7    29.8    +      -       +      +
    226D  THR*     3.6     2.9    -      -       -      +
    228D  LEU*     1.3    71.7    -      -       -      +
    230D  PHE*     1.3    63.9    +      -       -      +
    231D  LEU      3.1     3.1    +      -       -      -
    232D  ILE*     3.1    23.1    +      -       +      +
    233D  VAL*     3.4    16.6    +      -       +      +
    483D  PHE*     6.1     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 230 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226D  THR      2.4    33.1    +      -       -      +
    227D  TYR*     3.5    26.0    -      +       -      +
    229D  LEU*     1.3    68.0    -      -       -      +
    231D  LEU*     1.3    66.4    +      -       -      +
    233D  VAL*     3.0    29.8    +      -       +      +
    234D  LEU*     3.7    17.0    +      -       +      +
    480D  PHE*     3.4    39.9    -      +       -      -
    483D  PHE*     3.3    35.6    -      +       +      -
    484D  ILE*     3.8    16.6    -      -       +      -
    514D  ILE*     5.1     8.1    -      -       +      -
    569D  VAL*     4.2    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 231 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    227D  TYR      2.6    13.6    +      -       -      +
    228D  LEU*     3.1    45.8    -      -       +      +
    229D  LEU      3.1     0.4    +      -       -      -
    230D  PHE*     1.3    79.0    -      -       -      +
    232D  ILE*     1.3    81.1    +      -       +      +
    233D  VAL      3.3     0.5    +      -       -      -
    234D  LEU*     3.6     5.7    +      -       -      +
    235D  CYS*     3.4    23.2    +      -       -      -
    569D  VAL*     5.1    13.0    -      -       +      -
    570D  TRP*     6.1     4.3    -      -       +      +
    573D  LEU*     5.3    15.7    -      -       +      -
   1011D  CHS      3.5    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 232 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228D  LEU      3.0    27.8    -      -       -      +
    229D  LEU*     3.1    19.5    +      -       +      +
    231D  LEU*     1.3    84.1    -      -       +      +
    233D  VAL*     1.3    67.2    +      -       +      +
    235D  CYS*     3.1     3.3    +      -       -      +
    236D  ILE*     3.1    30.2    +      -       +      +
   1011D  CHS      3.5    54.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 233 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229D  LEU*     3.4    21.1    -      -       +      +
    230D  PHE*     3.0    26.4    +      -       +      +
    232D  ILE*     1.3    80.3    -      -       +      +
    234D  LEU*     1.3    64.1    +      -       +      +
    236D  ILE*     3.1    19.4    -      -       -      +
    237D  LEU*     3.1    24.0    -      -       +      +
    476D  CYS*     3.7    27.5    -      -       -      -
    479D  ILE*     5.9     5.2    -      -       +      -
    480D  PHE*     4.5    23.8    -      -       +      -
    483D  PHE*     6.4     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 234 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230D  PHE*     3.8    31.9    -      -       +      +
    231D  LEU*     3.6     6.9    +      -       -      +
    232D  ILE      3.3     0.4    -      -       -      -
    233D  VAL*     1.3    71.6    -      -       -      +
    235D  CYS*     1.3    61.4    +      -       -      +
    236D  ILE      3.0     2.2    -      -       -      -
    237D  LEU*     2.7    49.9    +      -       +      +
    238D  THR*     2.9    17.3    +      -       +      +
    480D  PHE*     3.4    32.5    -      -       +      -
    565D  THR*     5.5     2.0    -      -       -      +
    566D  VAL*     4.3    32.8    -      -       +      -
    569D  VAL*     4.6    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 235 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    613A  GLN*     4.4    15.0    -      -       -      +
    231D  LEU*     3.4    17.3    -      -       -      -
    232D  ILE      3.1     7.7    +      -       -      +
    234D  LEU*     1.3    76.5    -      -       -      +
    236D  ILE*     1.3    58.5    +      -       -      +
    238D  THR*     2.3    30.0    +      -       -      -
    239D  TYR*     3.5     2.6    +      -       -      +
    566D  VAL*     6.4     0.4    -      -       -      -
    570D  TRP*     4.7    14.1    -      -       -      -
   1010D  CHS      4.3     9.1    -      -       -      +
   1011D  CHS      2.7    54.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 236 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232D  ILE*     3.1    26.4    +      -       +      +
    233D  VAL*     3.1    14.1    -      -       -      +
    234D  LEU      3.0     0.6    -      -       -      -
    235D  CYS*     1.3    74.5    -      -       -      +
    237D  LEU*     1.3    55.0    +      -       +      +
    238D  THR      3.1     0.3    +      -       -      -
    239D  TYR*     3.3     3.2    +      -       +      +
    240D  GLY*     2.4    37.4    +      -       -      -
    469D  PHE*     4.2    23.6    -      -       +      -
    473D  LEU*     4.4    15.3    -      -       +      -
    476D  CYS*     5.2    12.1    -      -       +      -
   1011D  CHS      3.9    20.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 237 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233D  VAL*     3.1    37.2    -      -       +      +
    234D  LEU*     2.7    35.3    +      -       +      +
    236D  ILE*     1.3    74.8    -      -       +      +
    238D  THR*     1.3    59.5    +      -       +      +
    241D  MET*     2.4    71.1    +      -       +      +
    473D  LEU*     4.1    18.4    -      -       +      -
    476D  CYS*     5.3     5.2    -      -       -      +
    477D  GLU*     6.0     7.2    -      -       +      -
    480D  PHE*     5.3    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 238 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    613A  GLN*     3.7    21.7    +      -       -      +
    616A  TYR*     4.9     8.4    -      -       -      -
    617A  LEU*     4.1    32.5    -      -       +      -
    234D  LEU*     2.9    20.1    +      -       +      +
    235D  CYS*     2.3    31.9    +      -       -      -
    237D  LEU*     1.3    79.9    -      -       +      +
    239D  TYR*     1.3    61.2    +      -       -      -
    242D  MET*     2.9    27.4    +      -       -      +
    566D  VAL*     5.1     6.5    -      -       +      -
   1010D  CHS      3.2    16.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 239 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    616A  TYR*     5.6     3.1    -      -       -      -
    235D  CYS      4.1     0.2    -      -       -      +
    236D  ILE*     3.3     0.8    +      -       +      -
    238D  THR*     1.3    83.1    +      -       -      +
    240D  GLY*     1.3    66.2    +      -       -      +
    242D  MET      2.8    21.2    -      -       -      +
    243D  SER*     3.7     7.6    +      -       -      -
    244D  SER*     4.8    25.1    -      -       -      -
    469D  PHE*     5.6     8.3    -      +       -      -
   1010D  CHS      3.8    24.1    +      -       +      +
   1011D  CHS      3.4    35.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 240 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236D  ILE*     2.4    27.7    +      -       -      -
    237D  LEU*     4.1     0.9    -      -       -      -
    239D  TYR*     1.3    75.3    -      -       -      +
    241D  MET*     1.3    63.9    +      -       -      +
    242D  MET*     3.2     2.1    +      -       -      -
    243D  SER      4.5     1.0    +      -       -      -
    461D  LYS*     4.8     0.7    +      -       -      -
    469D  PHE*     4.0    26.9    -      -       -      -
    473D  LEU*     4.4     8.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 241 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237D  LEU*     2.4    66.8    +      -       +      +
    240D  GLY*     1.3    68.6    -      -       -      -
    242D  MET*     1.3    78.3    +      -       +      +
    461D  LYS*     3.3    45.6    +      -       -      +
    464D  ARG*     4.6    16.8    -      -       -      +
    473D  LEU*     3.8    15.0    -      -       +      -
    558D  PHE*     4.6    24.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 242 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    616A  TYR*     3.9    13.6    +      -       +      +
    621A  THR*     5.5    15.7    -      -       +      -
    238D  THR      2.9    18.9    +      -       -      +
    239D  TYR*     2.8    20.3    -      -       -      +
    240D  GLY      3.2     0.4    -      -       -      -
    241D  MET*     1.3   100.7    -      -       +      +
    243D  SER*     1.3    65.8    +      -       -      +
    246D  VAL*     5.0     9.9    -      -       +      -
    435D  LEU*     5.7     7.2    -      -       -      -
    459D  PRO      5.9     1.6    -      -       -      +
    460D  LEU*     5.5     2.7    -      -       +      -
    461D  LYS*     4.9    22.9    -      -       +      +
    555D  GLN*     4.3    23.6    -      -       -      +
    558D  PHE*     6.5     0.7    -      -       +      -
    559D  ASN*     4.9    13.9    -      -       -      +
----------------------------------------------------------
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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