Contacts of the helix formed by residues 162 - 188 (chain B) in PDB entry 4OL0


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 GLY 162 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161B  ILE*     1.3    93.4    -      -       -      +
    163B  ALA*     1.3    66.4    +      -       -      +
    164B  ASN      3.4     2.5    -      -       -      -
    165B  ARG*     3.5    11.6    +      -       -      +
    166B  ARG*     3.6     7.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 163 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161B  ILE      3.8     0.6    +      -       -      -
    162B  GLY*     1.3    70.4    -      -       -      +
    164B  ASN*     1.3    70.4    +      -       -      +
    165B  ARG      3.4     0.3    +      -       -      -
    166B  ARG*     3.4    20.4    +      -       -      +
    167B  THR*     3.7     7.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 164 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162B  GLY*     4.5     0.2    -      -       -      -
    163B  ALA*     1.3    80.1    -      -       -      +
    165B  ARG*     1.3    64.6    +      -       -      +
    167B  THR*     2.4    27.9    +      -       -      +
    168B  GLU*     3.0    20.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 165 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117B  LEU      5.6     1.8    +      -       -      -
    120B  PRO*     5.4     8.5    -      -       -      +
    122B  TRP*     4.6    21.0    -      -       -      +
    161B  ILE*     3.3    35.2    -      -       +      -
    162B  GLY*     3.5     8.6    +      -       -      +
    163B  ALA      3.2     0.2    -      -       -      -
    164B  ASN*     1.3    79.3    -      -       -      +
    166B  ARG*     1.3    56.9    +      -       -      +
    168B  GLU*     3.1    34.0    +      -       -      +
    169B  ILE*     2.8    56.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 166 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153B  GLU      5.5     0.2    +      -       -      -
    154B  VAL*     3.5    34.3    +      -       +      +
    155B  HIS*     5.2     6.8    -      -       -      +
    156B  SER      4.4     7.6    +      -       -      -
    159B  LEU*     3.8    36.2    +      -       -      +
    161B  ILE*     3.6    41.4    +      -       -      +
    162B  GLY      3.6    11.4    +      -       -      +
    163B  ALA*     3.7    10.3    -      -       -      +
    164B  ASN      3.2     0.6    -      -       -      -
    165B  ARG*     1.3    76.3    -      -       -      +
    167B  THR*     1.3    53.3    +      -       +      +
    169B  ILE*     3.1    12.2    +      -       -      +
    170B  ILE*     2.8    49.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 167 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163B  ALA      3.7     3.8    +      -       -      +
    164B  ASN*     2.4    38.3    +      -       -      +
    166B  ARG*     1.3    78.0    -      -       +      +
    168B  GLU*     1.3    58.1    +      -       -      +
    170B  ILE*     3.6    14.0    +      -       +      +
    171B  GLU*     3.4    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 168 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164B  ASN*     3.0    29.3    -      -       -      +
    165B  ARG*     3.1    45.6    +      -       -      +
    167B  THR*     1.3    77.0    -      -       -      +
    169B  ILE*     1.3    60.9    +      -       -      +
    171B  GLU*     3.7    12.6    -      -       -      +
    172B  ASP*     2.9    22.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 169 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117B  LEU*     4.0    48.0    -      -       +      +
    123B  LYS*     5.6     7.9    -      -       -      +
    154B  VAL*     4.4    18.8    -      -       +      -
    161B  ILE*     4.6    10.8    -      -       +      -
    165B  ARG*     2.8    55.8    +      -       +      +
    166B  ARG*     3.5    10.5    -      -       -      +
    168B  GLU*     1.3    74.3    -      -       -      +
    170B  ILE*     1.3    65.3    +      -       -      +
    171B  GLU      3.1     1.8    -      -       -      -
    172B  ASP*     3.0    22.9    +      -       -      +
    173B  LEU*     3.5    11.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 170 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  VAL*     3.8    21.1    -      -       +      -
    155B  HIS*     3.9    25.4    -      -       +      +
    166B  ARG*     2.8    30.9    +      -       +      +
    167B  THR*     3.8    13.7    -      -       +      +
    168B  GLU      3.4     0.2    -      -       -      -
    169B  ILE*     1.3    76.7    -      -       -      +
    171B  GLU*     1.3    60.8    +      -       -      +
    172B  ASP      3.4     0.7    +      -       -      -
    173B  LEU*     3.7     5.6    +      -       +      -
    174B  ALA*     3.4    18.9    +      -       +      +
    211B  LEU*     3.6    26.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 171 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167B  THR      3.4    12.1    +      -       -      +
    168B  GLU*     3.7    15.7    -      -       -      +
    169B  ILE      3.1     0.8    -      -       -      -
    170B  ILE*     1.3    80.5    -      -       -      +
    172B  ASP*     1.3    61.4    +      -       -      +
    174B  ALA*     3.8     7.4    -      -       +      +
    175B  PHE*     3.5    16.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 172 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122B  TRP*     4.0    19.5    -      -       -      -
    123B  LYS*     3.4    40.7    -      -       -      +
    168B  GLU      2.9    19.4    -      -       -      +
    169B  ILE*     3.0    11.3    +      -       -      +
    171B  GLU*     1.3    79.1    -      -       -      +
    173B  LEU*     1.3    59.7    +      -       +      +
    174B  ALA      3.1     1.8    -      -       -      -
    175B  PHE*     2.6    28.9    +      -       -      +
    176B  TYR*     2.8    23.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 173 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117B  LEU*     5.3     2.5    -      -       +      -
    123B  LYS*     5.3     6.5    -      -       -      +
    126B  VAL*     5.2     1.8    -      -       +      -
    150B  LEU*     3.8    29.4    -      -       +      +
    151B  PRO*     4.0    13.5    -      -       +      -
    154B  VAL*     3.6    31.9    -      -       +      -
    169B  ILE*     3.5    17.2    +      -       +      +
    170B  ILE*     3.7     6.0    +      -       -      +
    171B  GLU      3.6     0.2    -      -       -      -
    172B  ASP*     1.3    79.1    -      -       +      +
    174B  ALA*     1.3    53.3    +      -       -      +
    176B  TYR*     3.0    11.1    +      -       +      +
    177B  SER*     2.7    34.8    +      -       -      -
    208B  TRP*     3.1    18.3    -      -       +      -
    211B  LEU*     3.5    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 174 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170B  ILE*     3.4    16.5    +      -       +      +
    171B  GLU*     3.8     8.3    -      -       -      +
    172B  ASP      3.1     0.2    -      -       -      -
    173B  LEU*     1.3    78.6    -      -       -      +
    175B  PHE*     1.3    59.9    +      -       -      +
    177B  SER*     3.1    23.9    +      -       -      -
    211B  LEU*     3.9    20.5    -      -       +      +
    213B  VAL*     4.6    21.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 175 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171B  GLU      3.5     8.5    +      -       -      +
    172B  ASP*     2.6    25.4    +      -       -      +
    174B  ALA*     1.3    75.8    -      -       -      +
    176B  TYR*     1.3    73.4    +      +       +      -
    177B  SER      3.4     0.5    +      -       -      -
    178B  SER*     3.9    13.7    +      -       -      -
    179B  THR*     5.0     4.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 176 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123B  LYS*     2.9    54.8    -      -       +      +
    124B  GLY*     4.6     2.6    +      -       -      -
    126B  VAL*     3.7    43.1    -      -       +      -
    127B  GLN*     3.9    24.8    -      -       +      +
    172B  ASP*     2.8    36.5    +      -       +      -
    173B  LEU*     3.0    12.1    +      -       +      +
    175B  PHE*     1.3    87.1    -      +       +      +
    177B  SER*     1.3    65.2    +      -       -      +
    178B  SER      3.3     0.4    -      -       -      -
    179B  THR*     2.3    35.1    +      -       +      +
    180B  VAL*     2.9    10.9    +      -       +      +
    208B  TRP*     4.4     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 177 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173B  LEU      2.7    22.6    +      -       -      -
    174B  ALA*     3.1    22.4    +      -       -      -
    175B  PHE      3.2     0.4    -      -       -      -
    176B  TYR*     1.3    70.2    -      -       -      +
    178B  SER*     1.3    58.7    +      -       -      +
    180B  VAL*     3.1     6.4    +      -       -      +
    181B  VAL*     2.8    35.9    +      -       -      +
    208B  TRP*     4.1    15.1    +      -       -      -
    211B  LEU*     3.5    19.6    +      -       -      +
    212B  GLY*     5.3     4.7    -      -       -      -
    213B  VAL*     5.4     5.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 178 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174B  ALA      4.9     0.2    +      -       -      -
    175B  PHE      3.9    11.8    +      -       -      -
    177B  SER*     1.3    78.5    -      -       -      +
    179B  THR*     1.3    73.0    +      -       -      +
    181B  VAL*     3.0    11.3    +      -       -      +
    182B  SER*     2.8    29.0    +      -       -      -
    215B  ASP*     5.1    11.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 179 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126B  VAL*     4.8     3.3    -      -       -      +
    127B  GLN*     3.2    27.2    +      -       -      +
    130B  VAL*     5.8     7.3    -      -       -      +
    175B  PHE*     5.0     4.3    -      -       +      +
    176B  TYR*     2.3    44.2    +      -       +      +
    178B  SER*     1.3    87.5    +      -       -      +
    180B  VAL*     1.3    58.2    +      -       -      +
    182B  SER*     3.2     8.3    +      -       -      -
    183B  LEU*     2.9    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 180 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126B  VAL*     4.9     9.4    -      -       +      -
    147B  LEU*     4.8    15.0    -      -       +      -
    176B  TYR*     2.9    22.1    +      -       +      +
    177B  SER*     3.4     7.2    -      -       -      +
    179B  THR*     1.3    79.1    +      -       -      +
    181B  VAL*     1.3    58.4    +      -       +      +
    183B  LEU*     3.2     9.1    +      -       +      +
    184B  LEU*     2.8    37.8    +      -       +      +
    204B  CYS*     4.2    13.5    -      -       -      -
    208B  TRP*     3.7    55.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 181 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177B  SER*     2.8    22.7    +      -       -      +
    178B  SER*     3.0    12.3    +      -       -      +
    180B  VAL*     1.3    77.9    -      -       +      +
    182B  SER*     1.3    56.6    +      -       -      +
    184B  LEU*     3.3     8.4    +      -       +      +
    185B  MET*     2.8    45.3    +      -       +      +
    205B  LEU*     5.0    14.4    -      -       +      -
    214B  LEU      6.1     0.7    -      -       -      +
    215B  ASP*     5.5    15.0    -      -       +      -
    222B  ASN*     5.6     5.4    -      -       +      +
    224B  LEU*     4.0    15.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 182 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178B  SER      2.8    15.8    +      -       -      -
    179B  THR*     3.2    11.9    +      -       -      -
    181B  VAL*     1.3    70.2    -      -       -      +
    183B  LEU*     1.3    53.4    +      -       -      +
    185B  MET*     3.1    17.9    +      -       -      +
    186B  THR*     2.7    45.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 183 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130B  VAL*     4.1    32.1    -      -       +      -
    134B  SER*     4.2    17.3    -      -       -      -
    140B  LEU*     4.7     3.1    -      -       +      -
    143B  LEU*     4.5    12.6    -      -       +      -
    144B  LEU*     4.6     8.5    -      -       +      -
    147B  LEU*     3.1    36.1    -      -       +      -
    179B  THR      2.9    14.0    +      -       -      +
    180B  VAL*     3.3    11.2    -      -       +      +
    182B  SER*     1.3    75.9    +      -       -      +
    184B  LEU*     1.3    51.5    +      -       +      +
    186B  THR*     3.0    11.7    +      -       +      -
    187B  CYS*     2.7    53.1    +      -       -      -
    190B  LYS*     6.3     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 184 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144B  LEU*     3.5    31.6    -      -       +      -
    180B  VAL*     2.8    36.1    +      -       +      +
    181B  VAL*     3.6     5.4    -      -       +      +
    183B  LEU*     1.3    73.7    -      -       +      +
    185B  MET*     1.3    59.7    +      -       -      +
    187B  CYS*     2.9    19.8    +      -       -      +
    188B  VAL*     3.2    18.0    +      -       -      +
    201B  VAL*     4.0    29.0    -      -       +      +
    204B  CYS*     4.1     7.9    -      -       +      -
    205B  LEU*     3.9    46.7    -      -       +      +
    208B  TRP*     6.2     0.2    -      -       +      -
    224B  LEU*     3.8    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 185 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181B  VAL*     2.8    28.4    +      -       +      +
    182B  SER*     3.5    22.9    -      -       -      +
    184B  LEU*     1.3    72.7    -      -       -      +
    186B  THR*     1.3    58.0    +      -       -      +
    188B  VAL*     3.1    24.5    -      -       +      +
    189B  GLU*     3.2    16.2    -      -       -      +
    222B  ASN*     3.4    43.5    -      -       -      +
    223B  LYS*     4.6     7.4    -      -       +      -
    224B  LEU*     3.8    23.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 186 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  SER*     2.7    28.4    +      -       -      -
    183B  LEU*     3.3    13.8    -      -       +      -
    185B  MET*     1.3    76.6    -      -       -      +
    187B  CYS*     1.3    63.3    +      -       -      +
    188B  VAL      3.2     2.7    -      -       -      -
    189B  GLU*     3.2    35.7    +      -       -      +
    190B  LYS*     3.4    34.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 187 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140B  LEU*     3.9    26.6    -      -       -      +
    144B  LEU*     4.2    13.5    -      -       -      -
    183B  LEU*     2.7    37.3    +      -       -      +
    184B  LEU*     2.9    13.8    +      -       -      +
    186B  THR*     1.3    74.2    -      -       -      +
    188B  VAL*     1.3    54.4    +      -       -      +
    189B  GLU      3.4     0.2    -      -       -      -
    190B  LYS*     2.7    22.4    -      -       -      +
    192B  GLY*     4.1     4.5    +      -       -      -
    197B  MET*     3.8    37.3    -      -       +      +
    198B  LEU*     5.7     0.2    -      -       -      +
    201B  VAL*     4.0     9.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184B  LEU      3.6    10.1    -      -       -      +
    185B  MET*     3.1    27.1    -      -       +      +
    187B  CYS*     1.3    77.8    -      -       -      +
    189B  GLU*     1.3    67.7    +      -       +      +
    190B  LYS      3.5     2.5    -      -       -      -
    191B  ALA      4.0     0.3    -      -       -      +
    192B  GLY*     3.6    19.5    -      -       -      -
    198B  LEU*     3.9    15.7    -      -       +      -
    201B  VAL*     4.4    14.6    -      -       +      -
    223B  LYS*     6.1     5.6    -      -       +      -
    224B  LEU*     4.5     5.4    -      -       +      -
    227B  LEU*     3.9    28.0    -      -       +      -
----------------------------------------------------------
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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