Contacts of the helix formed by residues 168 - 193 (chain B) in PDB entry 5YWB


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 ARG 168 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  GLU*     4.9    10.4    +      -       -      +
     91B  GLU*     2.9    54.0    +      -       -      +
     92B  GLY*     4.7     4.0    -      -       -      +
     95B  SER*     5.9     2.4    -      -       -      -
    106B  LEU      4.6    14.1    +      -       -      -
    153B  LYS*     5.7     9.1    -      -       -      +
    157B  PHE*     3.8    26.0    -      -       +      -
    167B  LEU*     1.3    81.3    -      -       +      +
    169B  PHE*     1.3    53.7    +      -       -      +
    171B  LEU*     3.5     1.0    +      -       -      +
    172B  THR*     2.6    52.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 169 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  PHE*     3.4    40.7    -      +       -      -
    157B  PHE*     3.7    39.9    -      +       +      -
    158B  TYR*     5.2    14.8    -      +       -      -
    167B  LEU      3.1     3.5    -      -       -      +
    168B  ARG*     1.3    78.7    -      -       -      +
    170B  CYS*     1.3    61.7    +      -       -      +
    172B  THR*     2.6    20.3    +      -       -      -
    173B  GLY*     2.8    17.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 170 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167B  LEU*     3.4    13.7    +      -       +      +
    168B  ARG      3.4     0.4    -      -       -      -
    169B  PHE*     1.3    83.3    -      -       +      +
    171B  LEU*     1.3    66.9    +      -       +      +
    173B  GLY*     3.0     2.0    +      -       -      -
    174B  LEU*     2.9    36.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 171 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84B  VAL*     3.8    17.7    -      -       +      +
     87B  CYS*     3.4    53.8    -      -       +      +
     88B  GLU*     3.5    17.0    -      -       +      +
     91B  GLU*     3.6    32.1    -      -       +      +
    167B  LEU*     3.5    13.4    +      -       +      +
    168B  ARG      3.5     6.2    +      -       -      +
    170B  CYS*     1.3    81.8    -      -       +      +
    172B  THR*     1.3    57.9    +      -       +      +
    174B  LEU*     3.7     9.1    +      -       +      +
    175B  LEU*     3.1    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 172 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  GLU*     4.8    10.3    -      -       -      +
     91B  GLU*     6.0     0.2    -      -       -      +
    150B  LYS*     5.3     5.3    -      -       +      +
    153B  LYS*     5.1    21.1    -      -       +      -
    154B  PHE*     5.1    12.2    -      -       -      -
    157B  PHE*     5.8     4.4    -      -       +      +
    168B  ARG*     2.6    33.7    +      -       +      +
    169B  PHE*     2.6    27.5    +      -       -      -
    171B  LEU*     1.3    75.8    -      -       +      +
    173B  GLY*     1.3    63.2    +      -       -      +
    175B  LEU*     3.2    11.4    +      -       +      +
    176B  VAL*     3.0    29.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 173 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  PHE*     5.1    14.1    -      -       -      -
    169B  PHE*     2.8    20.4    +      -       -      -
    170B  CYS*     3.0     3.1    +      -       -      -
    172B  THR*     1.3    74.3    +      -       -      +
    174B  LEU*     1.3    62.6    +      -       -      +
    176B  VAL*     3.2     8.2    +      -       -      +
    177B  ILE*     3.0    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 174 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84B  VAL*     4.8    17.0    -      -       +      -
    170B  CYS*     2.9    27.4    +      -       +      +
    171B  LEU*     4.1    10.5    -      -       +      +
    173B  GLY*     1.3    74.6    -      -       -      +
    175B  LEU*     1.3    66.4    +      -       -      +
    177B  ILE*     3.3    17.3    +      -       +      +
    178B  LEU*     2.9    35.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 175 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81B  LEU*     4.3    14.8    -      -       +      -
     84B  VAL*     4.1    16.9    -      -       +      +
     85B  LEU*     4.7    14.8    -      -       +      -
     88B  GLU*     2.8    25.1    -      -       -      +
    113B  ALA*     6.0     0.4    -      -       +      -
    150B  LYS*     2.7    40.4    -      -       +      +
    171B  LEU      3.1    16.4    +      -       -      +
    172B  THR*     3.3    13.2    -      -       +      +
    174B  LEU*     1.3    76.8    -      -       -      +
    176B  VAL*     1.3    62.4    +      -       -      +
    178B  LEU*     3.2     5.4    +      -       -      +
    179B  TYR*     3.0    53.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 176 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147B  PHE*     3.7    27.9    -      -       +      -
    150B  LYS*     3.3    39.9    -      -       +      +
    151B  THR*     4.8     6.7    -      -       -      +
    154B  PHE*     5.1     8.7    -      -       +      -
    172B  THR*     3.0    16.3    +      -       -      +
    173B  GLY*     3.2     9.2    +      -       -      +
    175B  LEU*     1.3    74.9    -      -       -      +
    177B  ILE*     1.3    65.0    +      -       +      +
    179B  TYR*     3.4     6.1    +      -       -      +
    180B  GLY*     2.9    20.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 177 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173B  GLY*     3.0    17.5    +      -       -      +
    174B  LEU*     3.7    20.6    -      -       +      +
    175B  LEU      3.2     0.2    -      -       -      -
    176B  VAL*     1.3    78.7    -      -       +      +
    178B  LEU*     1.3    61.0    +      -       +      +
    180B  GLY*     3.2     2.5    +      -       -      -
    181B  MET*     3.0    45.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 178 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77B  LEU*     4.0    26.4    -      -       +      +
     80B  ILE*     3.8    35.4    -      -       +      +
     81B  LEU*     3.7    31.4    -      -       +      -
     84B  VAL*     3.9    18.6    -      -       +      -
    174B  LEU*     2.9    27.0    +      -       +      +
    175B  LEU*     3.8     2.5    -      -       -      +
    177B  ILE*     1.3    76.4    -      -       +      +
    179B  TYR*     1.3    65.7    +      -       -      +
    181B  MET*     3.2    10.5    +      -       -      +
    182B  LEU*     3.1    29.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 179 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36B  HIS*     3.5    15.0    -      +       -      -
     81B  LEU*     4.6    11.0    -      -       +      +
    113B  ALA*     4.1     9.2    -      -       -      +
    142B  TYR*     3.5    16.7    +      -       -      -
    143B  TRP*     3.3    43.8    -      +       -      -
    146B  ALA*     3.3    30.1    -      -       +      -
    147B  PHE*     4.7    14.8    -      -       +      -
    150B  LYS*     4.4    18.4    -      -       +      -
    175B  LEU*     3.0    52.5    +      -       +      +
    176B  VAL*     3.7     5.8    -      -       -      +
    178B  LEU*     1.3    77.5    -      -       -      +
    180B  GLY*     1.3    62.4    +      -       -      +
    182B  LEU*     3.4     7.3    +      -       -      +
    183B  LEU*     3.0    28.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 180 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147B  PHE*     4.5    10.4    -      -       -      -
    176B  VAL      2.9    15.1    +      -       -      -
    177B  ILE*     3.7     3.1    -      -       -      -
    178B  LEU      3.2     0.2    -      -       -      -
    179B  TYR*     1.3    77.2    -      -       -      +
    181B  MET*     1.3    61.6    +      -       -      +
    183B  LEU*     3.3    15.0    +      -       -      +
    184B  LEU*     3.0    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 181 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73B  LEU*     5.6    11.2    -      -       +      -
     77B  LEU*     3.9    28.3    -      -       +      -
    177B  ILE*     3.0    32.2    +      -       +      +
    178B  LEU*     3.8     9.4    -      -       -      +
    180B  GLY*     1.3    77.8    -      -       -      +
    182B  LEU*     1.3    60.2    +      -       -      +
    184B  LEU*     3.4    14.7    +      -       +      +
    185B  VAL*     3.1    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 182 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  ARG*     4.0    41.2    +      -       +      +
     77B  LEU*     4.0    28.9    -      -       +      -
     78B  THR*     4.6     3.4    -      -       -      +
     81B  LEU*     3.5    33.7    -      -       +      -
    143B  TRP*     3.6    32.1    -      -       +      +
    178B  LEU      3.1    22.7    +      -       -      +
    179B  TYR      3.8     3.6    -      -       -      +
    181B  MET*     1.3    74.3    -      -       -      +
    183B  LEU*     1.3    61.4    +      -       -      +
    185B  VAL*     3.2     8.6    +      -       +      +
    186B  GLU*     3.0    28.4    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    140B  LEU*     3.7    13.7    -      -       +      -
    143B  TRP*     3.5    31.8    -      -       +      +
    144B  THR*     3.6    27.4    -      -       +      -
    147B  PHE*     3.8    35.9    -      -       +      -
    179B  TYR      3.0    18.2    +      -       -      +
    180B  GLY*     3.4    13.0    -      -       -      +
    182B  LEU*     1.3    75.7    -      -       -      +
    184B  LEU*     1.3    59.3    +      -       +      +
    186B  GLU*     3.1     8.6    +      -       -      +
    187B  VAL*     2.9    34.4    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    180B  GLY      3.0    20.6    +      -       -      +
    181B  MET*     3.7    16.4    -      -       +      +
    182B  LEU      3.3     0.2    -      -       -      -
    183B  LEU*     1.3    77.3    -      -       +      +
    185B  VAL*     1.3    58.7    +      -       +      +
    187B  VAL*     3.3    14.1    +      -       +      +
    188B  ASN*     2.9    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 185 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69B  PRO      4.4     4.3    -      -       -      +
     70B  GLY*     4.1    25.1    -      -       -      +
     73B  LEU*     3.8    33.4    -      -       +      -
     74B  ARG*     3.3    29.8    -      -       +      +
     77B  LEU*     4.6     3.1    -      -       +      -
    181B  MET      3.1    15.2    +      -       -      +
    182B  LEU*     3.2    13.9    +      -       +      +
    184B  LEU*     1.3    76.6    -      -       +      +
    186B  GLU*     1.3    56.7    +      -       -      +
    188B  ASN*     3.1     9.2    +      -       +      +
    189B  VAL*     2.9    27.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 186 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  ARG*     2.8    32.9    +      -       -      +
    124B  TYR*     5.4     0.3    -      -       -      -
    136B  LEU*     4.0    26.4    -      -       -      +
    139B  LEU*     3.6    19.5    -      -       -      +
    140B  LEU*     4.1    19.6    -      -       +      +
    143B  TRP*     3.2    30.2    +      -       +      +
    182B  LEU      3.0    18.5    +      -       -      +
    183B  LEU*     3.1     7.8    +      -       -      +
    185B  VAL*     1.3    75.4    -      -       -      +
    187B  VAL*     1.3    63.1    +      -       -      +
    189B  VAL*     3.1     8.2    +      -       -      +
    190B  ILE*     3.0    24.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 187 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140B  LEU*     4.8    14.4    -      -       +      -
    183B  LEU*     2.9    23.7    +      -       +      +
    184B  LEU*     3.6    16.6    -      -       +      +
    185B  VAL      3.3     0.2    -      -       -      -
    186B  GLU*     1.3    75.8    -      -       -      +
    188B  ASN*     1.3    58.6    +      -       -      +
    190B  ILE*     3.0    14.6    -      -       +      +
    191B  ARG*     2.9    31.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69B  PRO*     4.1    26.0    +      -       -      +
     70B  GLY*     5.1     2.0    -      -       -      +
    184B  LEU      2.9    13.8    +      -       -      +
    185B  VAL*     3.1    12.8    +      -       -      +
    187B  VAL*     1.3    78.1    -      -       -      +
    189B  VAL*     1.3    56.7    +      -       -      +
    191B  ARG*     3.0    36.0    +      -       -      +
    192B  VAL*     2.9    34.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 189 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68B  PHE*     4.5    24.9    -      -       +      -
     69B  PRO*     3.6    25.4    -      -       +      +
     74B  ARG*     4.2    16.2    -      -       -      +
    124B  TYR*     4.7     2.5    -      -       +      +
    136B  LEU*     4.0    32.8    -      -       +      -
    185B  VAL      2.9    18.5    +      -       -      +
    186B  GLU*     3.1    12.1    +      -       -      +
    188B  ASN*     1.3    76.9    -      -       -      +
    190B  ILE*     1.3    62.6    +      -       -      +
    192B  VAL*     3.2    16.1    +      -       -      +
    193B  ARG*     3.5    17.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 190 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140B  LEU*     5.5    12.8    -      -       +      -
    186B  GLU      3.0    15.0    +      -       -      +
    187B  VAL*     3.0    28.5    -      -       +      +
    189B  VAL*     1.3    79.4    -      -       -      +
    191B  ARG*     1.3    61.7    +      -       -      +
    192B  VAL      3.3     0.7    +      -       -      -
    193B  ARG      3.9     5.5    +      -       -      -
    194B  ARG      4.3     0.7    +      -       -      -
    195B  TYR*     2.4    50.4    +      -       +      +
    196B  ILE*     4.1    21.5    -      -       +      +
    197B  PHE*     4.4    13.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 191 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187B  VAL*     2.9    21.9    +      -       +      +
    188B  ASN*     3.0    30.9    +      -       -      +
    190B  ILE*     1.3    78.9    -      -       -      +
    192B  VAL*     1.3    69.6    +      -       -      +
    197B  PHE*     6.0     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 192 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69B  PRO*     3.9    33.7    -      -       +      -
    188B  ASN*     2.9    33.5    +      -       -      +
    189B  VAL*     3.6     8.7    -      -       -      +
    190B  ILE      3.1     0.6    -      -       -      -
    191B  ARG*     1.3    88.6    -      -       -      +
    193B  ARG*     1.3    74.3    +      -       +      +
    201B  PRO      4.7     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 193 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66B  LEU*     5.3     7.1    -      -       -      +
     67B  HIS      5.6     1.2    +      -       -      -
     68B  PHE*     3.4    40.7    -      -       +      -
     69B  PRO*     6.3     0.7    -      -       +      -
    131B  ASN*     3.9    23.5    -      -       -      +
    136B  LEU*     5.2     5.8    -      -       -      -
    189B  VAL*     3.5    18.7    +      -       +      +
    190B  ILE      4.4     2.2    -      -       -      -
    191B  ARG      3.8     0.6    -      -       -      -
    192B  VAL*     1.3    90.1    -      -       +      +
    194B  ARG*     1.3    73.0    +      -       -      +
    195B  TYR      4.2     0.4    -      -       -      -
    197B  PHE*     4.4     9.4    -      -       -      +
    198B  PHE      5.3     0.9    -      -       -      +
    200B  THR      4.6     1.4    -      -       -      +
    201B  PRO*     3.3    34.2    -      -       +      +
    203B  GLU*     3.1    34.7    -      -       -      +
    204B  VAL*     4.6    16.4    -      -       +      +
----------------------------------------------------------
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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