Contacts of the helix formed by residues 154 - 176 (chain B) in PDB entry 5K58


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 ASP 154 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153B  THR*     1.3    71.9    -      -       -      +
    155B  GLU*     1.3    60.3    +      -       -      +
    156B  THR*     3.0    19.8    +      -       -      -
    157B  LEU*     3.2    29.2    +      -       +      +
    158B  LEU*     2.8    33.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 155 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137B  ARG*     4.1     8.2    -      -       +      +
    140B  MET*     3.1    43.7    -      -       +      +
    141B  ARG*     3.8    12.6    -      -       +      +
    144B  ARG*     4.0    25.3    +      -       -      +
    151B  TYR*     3.1    39.9    +      -       -      +
    153B  THR      3.5     8.2    -      -       -      +
    154B  ASP*     1.3    76.4    +      -       -      +
    156B  THR*     1.3    60.8    +      -       -      +
    158B  LEU*     4.8     1.8    -      -       -      -
    159B  ALA*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 156 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180A  TYR*     6.2     0.2    -      -       -      +
    133B  GLU*     6.0     2.9    -      -       -      +
    137B  ARG*     3.4    35.3    +      -       -      +
    154B  ASP*     3.0     9.7    +      -       -      -
    155B  GLU*     1.3    76.3    -      -       -      +
    157B  LEU*     1.3    61.2    +      -       -      +
    159B  ALA*     3.4     5.7    -      -       +      +
    160B  SER*     3.0    31.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 157 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  ASP*     4.0    33.2    -      -       +      +
    188A  ALA*     3.6    38.4    -      -       +      +
    189A  ARG*     3.7    20.0    +      -       +      +
    192A  LEU*     4.4    15.7    -      -       +      -
    153B  THR*     5.6     0.4    -      -       -      -
    154B  ASP*     3.2    33.8    +      -       +      +
    156B  THR*     1.3    76.5    -      -       -      +
    158B  LEU*     1.3    63.0    +      -       -      +
    160B  SER*     2.9    19.4    +      -       -      -
    161B  GLN*     3.1    13.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 158 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  LEU*     3.8    25.7    -      -       +      +
    140B  MET*     3.8    15.9    -      -       +      -
    151B  TYR*     4.1    19.5    -      -       +      -
    153B  THR*     3.9    19.7    -      -       -      +
    154B  ASP      2.8    19.3    +      -       -      +
    155B  GLU*     4.2     3.4    -      -       -      +
    157B  LEU*     1.3    71.2    -      -       -      +
    159B  ALA*     1.3    65.3    +      -       -      +
    161B  GLN*     3.5     1.0    +      -       +      +
    162B  ILE*     3.0    42.2    +      -       +      +
    196B  GLN*     3.8    26.0    -      -       +      +
    197B  LEU*     3.6    27.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 159 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133B  GLU*     4.2    12.6    -      -       +      +
    136B  LEU*     3.6    10.0    -      -       +      +
    137B  ARG*     3.9    21.1    -      -       +      +
    140B  MET*     2.9    21.7    -      -       +      +
    155B  GLU      2.9    21.4    +      -       -      +
    156B  THR*     3.4    10.5    -      -       +      +
    157B  LEU      3.2     0.2    -      -       -      -
    158B  LEU*     1.3    78.6    -      -       -      +
    160B  SER*     1.3    64.7    +      -       -      +
    162B  ILE*     3.2    11.3    +      -       -      +
    163B  LEU*     3.3     8.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 160 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169A  MET*     6.0     1.6    -      -       -      -
    180A  TYR*     3.6    21.3    +      -       -      -
    189A  ARG*     3.0    19.7    +      -       -      -
    133B  GLU*     3.3    26.4    +      -       -      +
    156B  THR*     3.0    12.5    +      -       -      -
    157B  LEU*     2.9    12.8    +      -       -      -
    159B  ALA*     1.3    76.6    -      -       -      +
    161B  GLN*     1.3    63.5    +      -       -      +
    163B  LEU*     2.7    24.3    +      -       -      +
    164B  ALA*     2.9    14.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 161 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165A  PHE*     3.1    30.9    -      -       -      +
    189A  ARG*     3.4    39.6    +      -       -      +
    192A  LEU*     4.0    15.0    -      -       +      +
    193A  ILE*     3.2    27.9    -      -       -      +
    157B  LEU      3.2    13.7    -      -       -      +
    158B  LEU*     3.6     8.7    -      -       -      +
    160B  SER*     1.3    81.6    +      -       -      +
    162B  ILE*     1.3    60.3    +      -       +      +
    164B  ALA*     3.6    17.7    -      -       -      +
    165B  PHE*     3.7     8.7    +      -       -      +
    196B  GLN*     3.8    25.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 162 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  LEU*     4.0    14.8    -      -       +      -
     92B  VAL*     3.8    27.8    -      -       +      -
    136B  LEU*     4.3    10.5    -      -       +      -
    140B  MET*     3.9    12.8    -      -       +      -
    158B  LEU*     3.0    28.5    -      -       +      +
    159B  ALA      3.2     5.8    +      -       -      +
    160B  SER      3.1     0.6    -      -       -      -
    161B  GLN*     1.3    74.8    -      -       -      +
    163B  LEU*     1.3    65.5    +      -       -      +
    165B  PHE*     3.6     8.2    +      -       +      +
    166B  CYS*     3.4    21.8    +      -       -      -
    193B  ILE*     3.6    22.9    -      -       +      +
    196B  GLN*     3.1    27.6    -      -       -      +
    197B  LEU*     5.6     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 163 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172A  ARG*     5.9     0.7    -      -       -      +
    175A  ARG*     3.9    10.5    -      -       -      +
     95B  LEU*     4.6     5.8    -      -       +      -
    129B  PHE*     4.2    18.2    -      -       +      +
    132B  ILE*     4.1    26.5    -      -       +      -
    133B  GLU*     3.3    33.9    -      -       +      +
    136B  LEU*     4.6     7.1    -      -       +      +
    159B  ALA      3.3     6.6    +      -       -      +
    160B  SER      2.7    14.3    +      -       -      +
    162B  ILE*     1.3    72.7    -      -       -      +
    164B  ALA*     1.3    53.2    +      -       -      +
    166B  CYS*     2.8    14.7    +      -       +      +
    167B  GLU*     2.7    63.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 164 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164A  ALA      4.4     1.1    -      -       -      -
    165A  PHE*     3.7    22.7    -      -       +      +
    168A  GLY*     3.1    21.9    -      -       -      -
    169A  MET*     3.8    24.0    -      -       +      -
    160B  SER      2.9     9.6    +      -       -      +
    161B  GLN      3.6    11.9    -      -       -      +
    163B  LEU*     1.3    76.0    -      -       -      +
    165B  PHE*     1.3    56.9    +      -       -      +
    167B  GLU*     3.1     3.4    +      -       -      +
    168B  GLY*     2.9    24.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 165 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161A  GLN*     3.1    38.8    -      -       -      -
    164A  ALA*     3.6    28.3    -      -       +      -
    165A  PHE*     4.6     5.2    -      -       +      +
     92B  VAL*     4.8     0.2    -      -       +      -
     96B  LEU*     4.2    14.4    -      -       +      -
    161B  GLN      3.7     8.3    +      -       -      +
    162B  ILE*     3.6    10.7    +      -       +      +
    163B  LEU      3.3     0.2    -      -       -      -
    164B  ALA*     1.3    78.5    -      -       -      +
    166B  CYS*     1.3    67.9    +      -       -      +
    169B  MET*     3.0    65.4    +      -       +      +
    186B  PHE*     6.0     0.2    -      +       -      -
    189B  ARG*     3.8    17.9    -      -       +      -
    193B  ILE*     3.8    29.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 166 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  VAL*     3.6    38.6    -      -       -      -
     95B  LEU*     3.5    26.5    -      -       +      -
     96B  LEU*     3.7    17.3    -      -       +      +
    162B  ILE*     3.4    15.0    +      -       -      +
    163B  LEU*     2.8    15.8    +      -       +      +
    165B  PHE*     1.3    82.2    -      -       -      +
    167B  GLU*     1.3    58.7    +      -       -      +
    168B  GLY      3.3     2.2    +      -       -      -
    169B  MET      4.4     0.7    -      -       -      -
    170B  LEU*     3.2    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 167 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168A  GLY*     4.1    15.9    -      -       -      +
    171A  SER*     3.9    21.6    +      -       -      +
    172A  ARG*     4.5     0.9    +      -       -      +
    175A  ARG*     2.4    48.5    +      -       -      -
     95B  LEU*     6.1     0.4    -      -       +      -
    110B  THR*     5.4     1.7    -      -       -      +
    129B  PHE*     3.0    38.5    -      -       +      -
    163B  LEU*     2.7    26.8    +      -       +      +
    164B  ALA*     3.1     4.9    +      -       -      +
    166B  CYS*     1.3    77.9    -      -       -      +
    168B  GLY*     1.3    58.4    +      -       -      +
    170B  LEU*     4.8     4.8    -      -       +      +
    171B  SER*     3.3    24.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 168 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164A  ALA*     3.5    24.9    -      -       -      -
    167A  GLU*     4.3     1.3    -      -       -      -
    168A  GLY*     3.8     5.2    -      -       -      -
    164B  ALA      2.9     7.6    +      -       -      -
    165B  PHE      3.8     0.4    -      -       -      -
    166B  CYS      3.3     0.2    -      -       -      -
    167B  GLU*     1.3    78.5    -      -       -      +
    169B  MET*     1.3    56.0    +      -       -      +
    170B  LEU      3.2     1.6    -      -       -      -
    171B  SER*     2.7    20.8    +      -       -      -
    172B  ARG*     2.8    30.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 169 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160A  SER      4.6     0.2    -      -       -      +
    164A  ALA*     4.4     8.4    -      -       -      +
     96B  LEU*     4.4    18.8    -      -       +      -
    165B  PHE*     3.0    53.8    +      -       +      +
    166B  CYS      4.4     1.1    +      -       -      +
    168B  GLY*     1.3    75.0    -      -       -      +
    170B  LEU*     1.3    56.5    +      -       -      +
    172B  ARG*     3.8    22.3    +      -       -      +
    173B  PHE*     3.1    23.4    +      -       -      +
    180B  TYR      4.4     8.0    -      -       -      +
    181B  ARG      4.6     3.6    -      -       -      +
    182B  PRO*     3.2    40.2    -      -       +      +
    184B  ASP      5.4     0.9    -      -       -      +
    189B  ARG*     3.7    28.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 170 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95B  LEU*     4.8    22.2    -      -       +      -
     96B  LEU*     4.7     7.6    -      -       +      +
     99B  GLY*     3.7    22.7    -      -       -      +
    106B  THR*     3.3    23.1    -      -       -      +
    109B  LEU*     4.5    21.5    -      -       +      -
    110B  THR*     4.1    10.1    -      -       +      -
    129B  PHE*     5.9     3.4    -      -       +      -
    166B  CYS      3.2    23.2    +      -       -      +
    167B  GLU*     4.8     5.8    -      -       +      +
    168B  GLY      3.2     0.6    -      -       -      -
    169B  MET*     1.3    76.0    -      -       +      +
    171B  SER*     1.3    62.4    +      -       -      +
    172B  ARG      3.3     0.4    -      -       -      -
    173B  PHE*     3.1     6.6    -      -       +      +
    174B  VAL*     3.1    33.3    +      -       -      +
    182B  PRO*     4.1    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 171 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  HIS*     6.2     3.4    -      -       -      -
    167A  GLU*     3.6    21.9    +      -       -      +
    171A  SER*     5.2     7.0    -      -       -      -
    110B  THR*     3.9    16.1    -      -       -      +
    112B  HIS*     5.1     4.7    -      -       -      -
    167B  GLU      3.3    18.0    +      -       -      -
    168B  GLY*     2.7    23.0    +      -       -      -
    170B  LEU*     1.3    77.4    -      -       -      +
    172B  ARG*     1.3    60.2    +      -       -      +
    174B  VAL*     3.7     1.6    +      -       -      +
    175B  ARG*     3.1    34.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 172 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133A  GLU*     3.7    21.6    +      -       -      -
    160A  SER*     3.8    29.5    +      -       -      +
    163A  LEU*     4.0    10.3    -      -       -      +
    164A  ALA*     4.3    19.1    -      -       -      +
    167A  GLU*     3.0    35.6    +      -       -      +
    168B  GLY      2.8    20.0    +      -       -      +
    169B  MET*     4.0    20.3    -      -       -      +
    171B  SER*     1.3    74.7    -      -       -      +
    173B  PHE*     1.3    65.8    +      -       -      +
    175B  ARG*     3.2    16.4    +      -       -      +
    176B  SER*     3.6    12.8    +      -       -      -
    180B  TYR*     3.9    51.2    +      -       +      +
    189B  ARG*     5.8     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 173 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99B  GLY      3.7    23.1    -      -       -      -
    100B  GLU*     3.9    20.2    -      -       +      -
    103B  PRO*     4.7     4.9    -      -       +      -
    106B  THR*     3.9    17.9    -      -       +      -
    169B  MET      3.1    17.0    +      -       -      +
    170B  LEU*     3.1    12.8    -      -       +      +
    171B  SER      3.2     0.2    -      -       -      -
    172B  ARG*     1.3    80.5    -      -       -      +
    174B  VAL*     1.3    61.0    +      -       -      +
    176B  SER      3.4     3.8    +      -       -      -
    178B  PHE*     2.8    83.2    +      +       +      -
    179B  LYS      4.0     1.0    +      -       -      -
    180B  TYR      3.6     8.5    -      -       -      +
    181B  ARG*     3.5    29.8    -      -       +      -
    182B  PRO*     3.5    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 174 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106B  THR*     3.6    24.2    -      -       +      +
    107B  ARG*     3.8    37.8    +      -       +      +
    110B  THR*     3.6    21.3    -      -       +      -
    112B  HIS*     3.6    24.9    -      -       +      +
    170B  LEU      3.1    16.6    +      -       -      +
    171B  SER      4.2     2.2    -      -       -      +
    173B  PHE*     1.3    75.0    -      -       -      +
    175B  ARG*     1.3    64.8    +      -       -      +
    177B  GLU*     2.8    22.9    +      -       -      +
    178B  PHE*     4.3     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 175 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  LEU      5.4     3.4    -      -       -      -
    110A  THR*     5.4     8.7    -      -       -      +
    122A  GLN*     4.3    22.0    -      -       -      +
    125A  ILE*     5.4     2.5    -      -       -      -
    126A  ASN*     3.2    39.7    +      -       -      +
    129A  PHE*     3.7    36.8    -      -       -      +
    163A  LEU*     5.2     1.6    -      -       -      +
    167A  GLU*     2.8    42.0    +      -       -      -
    112B  HIS*     5.0    12.5    -      -       +      -
    171B  SER*     3.1    22.6    +      -       -      +
    172B  ARG*     3.2    24.6    +      -       -      +
    173B  PHE      3.3     0.2    -      -       -      -
    174B  VAL*     1.3    79.1    -      -       -      +
    176B  SER*     1.3    59.0    +      -       -      +
    177B  GLU*     3.4     3.0    +      -       -      +
    180B  TYR*     4.8    10.5    -      -       -      -
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Residues in contact with SER 176 (chain B). Click here for Legend to table.
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                                  Specific contacts
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     Residue       Dist    Surf   HB    Arom    Phob    DC
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    126A  ASN*     4.7     6.5    +      -       -      +
    172B  ARG      3.6    11.1    +      -       -      -
    173B  PHE      3.4     3.1    +      -       -      -
    174B  VAL      2.9     1.2    +      -       -      -
    175B  ARG*     1.3    80.0    -      -       -      +
    177B  GLU*     1.3    68.4    +      -       -      +
    178B  PHE      3.2     1.6    -      -       -      -
    179B  LYS*     3.0    30.9    +      -       -      +
    180B  TYR*     3.9    28.9    -      -       -      -
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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