Contacts of the helix formed by residues 169 - 193 (chain B) in PDB entry 4EVI


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 ALA 169 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165B  CYS      4.5     1.6    -      -       -      -
    166B  SER      5.4     0.8    +      -       -      -
    167B  GLU      3.9     3.2    +      -       -      -
    168B  ASP*     1.3    74.3    +      -       -      +
    170B  ASN*     1.3    57.3    +      -       -      +
    172B  SER*     3.4     6.9    +      -       -      -
    173B  GLN*     2.8    33.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 170 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124B  HIS*     4.8     9.4    +      -       -      -
    168B  ASP*     3.3     7.9    +      -       -      +
    169B  ALA*     1.3    78.2    -      -       -      +
    171B  PHE*     1.3    64.3    +      -       -      +
    173B  GLN*     3.2    11.8    +      -       -      +
    174B  LEU*     3.0    51.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 171 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121B  CYS*     3.6    42.0    -      -       -      -
    124B  HIS*     3.8    29.4    -      +       +      +
    126B  HIS*     3.9    24.5    -      +       +      -
    127B  LEU*     3.9    22.7    -      -       +      -
    152B  PHE*     5.2     0.2    -      +       -      -
    161B  VAL*     4.0    24.0    -      -       +      -
    164B  VAL*     4.8     6.3    -      -       +      -
    165B  CYS*     4.0    18.6    -      -       -      -
    168B  ASP*     3.2    27.6    +      -       -      +
    170B  ASN*     1.3    79.0    +      -       -      +
    172B  SER*     1.3    65.3    +      -       -      +
    174B  LEU*     3.2    11.1    +      -       +      +
    175B  PHE*     3.1    23.7    +      +       -      +
    329B  PHE*     5.9     0.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with SER 172 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165B  CYS*     3.4    46.5    +      -       -      +
    168B  ASP      3.0    10.0    +      -       -      -
    169B  ALA*     3.6     7.0    -      -       -      -
    171B  PHE*     1.3    77.1    -      -       -      +
    173B  GLN*     1.3    62.7    +      -       -      +
    175B  PHE*     3.2     4.7    +      -       -      +
    176B  SER*     3.1    28.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 173 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169B  ALA*     2.8    21.4    +      -       -      +
    170B  ASN*     3.6    11.4    -      -       -      +
    172B  SER*     1.3    73.4    -      -       -      +
    174B  LEU*     1.3    57.6    +      -       +      +
    176B  SER*     3.9     4.8    -      -       -      -
    177B  GLU*     2.9    59.9    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    117B  SER*     3.5    30.0    -      -       -      +
    120B  PHE*     3.9    39.5    -      -       +      +
    121B  CYS*     3.8    22.6    -      -       +      +
    124B  HIS*     4.8     8.5    -      -       +      -
    170B  ASN*     3.0    44.1    +      -       -      +
    171B  PHE*     3.2    12.5    +      -       -      +
    173B  GLN*     1.3    78.7    -      -       +      +
    175B  PHE*     1.3    57.6    +      -       -      +
    177B  GLU*     4.4     4.0    -      -       -      +
    178B  GLY*     2.9    26.3    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
    118B  LEU*     5.1     1.6    -      -       +      -
    121B  CYS*     3.9    21.7    -      -       -      -
    161B  VAL*     4.6    12.1    -      -       +      -
    162B  TYR*     5.4     7.9    -      +       -      -
    165B  CYS*     4.3    18.8    -      -       -      -
    171B  PHE*     3.1    14.3    +      +       +      +
    172B  SER*     3.5    11.0    -      -       -      +
    174B  LEU*     1.3    76.5    -      -       -      +
    176B  SER*     1.3    57.2    +      -       -      +
    178B  GLY*     3.1     2.8    +      -       -      -
    179B  MET*     2.9    58.9    +      -       +      +
    329B  PHE*     3.8    35.4    -      +       -      -
    330B  LEU*     5.1     4.3    -      -       +      -
    401B  N7I      4.2    20.6    -      +       +      -
----------------------------------------------------------
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Residues in contact with SER 176 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172B  SER*     3.1    19.8    +      -       -      -
    173B  GLN*     3.9     5.8    -      -       -      -
    175B  PHE*     1.3    75.8    -      -       -      +
    177B  GLU*     1.3    60.6    +      -       -      +
    179B  MET*     3.2     7.9    +      -       -      +
    180B  ALA*     2.8    30.5    +      -       -      +
    211B  THR*     6.4     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 177 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  ASN      5.6     0.7    -      -       -      +
    117B  SER*     2.7    37.0    +      -       -      +
    173B  GLN*     2.9    53.2    +      -       +      +
    174B  LEU*     4.4     4.9    -      -       -      +
    176B  SER*     1.3    78.1    -      -       -      +
    178B  GLY*     1.3    56.7    +      -       -      +
    180B  ALA*     3.7     7.0    -      -       -      +
    181B  GLY*     3.0    25.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 178 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114B  ASN      6.2     0.2    -      -       -      -
    117B  SER*     3.9     1.3    -      -       -      -
    118B  LEU*     3.9    34.7    -      -       -      +
    174B  LEU      2.9    16.7    +      -       -      -
    175B  PHE      3.5     4.0    -      -       -      -
    177B  GLU*     1.3    73.8    -      -       -      +
    179B  MET*     1.3    70.1    +      -       -      +
    181B  GLY*     3.5     1.3    +      -       -      -
    182B  ASP*     3.3    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 179 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118B  LEU*     3.8    25.4    -      -       +      -
    175B  PHE*     2.9    37.1    +      -       +      +
    176B  SER*     3.7     9.2    -      -       -      +
    178B  GLY*     1.3    74.6    -      -       -      +
    180B  ALA*     1.3    66.3    +      -       -      +
    182B  ASP*     3.3     4.5    +      -       -      +
    183B  SER*     3.0    27.3    +      -       -      +
    267B  LYS*     4.1     2.6    +      -       -      +
    268B  TRP*     3.7    35.7    -      -       +      +
    401B  N7I      3.8    26.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 180 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  SER      2.8    17.6    +      -       -      +
    177B  GLU*     3.7     7.9    -      -       -      +
    179B  MET*     1.3    76.4    -      -       -      +
    181B  GLY*     1.3    62.1    +      -       -      +
    183B  SER*     3.3     6.5    +      -       -      -
    184B  TRP      3.1     9.5    +      -       -      -
    211B  THR*     4.2    18.2    -      -       -      +
    213B  ASN*     2.9    33.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 181 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  GLN*     5.1     0.8    -      -       -      +
    112B  PRO      3.7    19.7    -      -       -      -
    113B  TYR*     3.8    17.2    -      -       -      +
    114B  ASN      4.6     8.3    -      -       -      -
    177B  GLU      3.0    16.9    +      -       -      -
    178B  GLY      4.0     1.8    -      -       -      -
    179B  MET      3.2     0.2    -      -       -      -
    180B  ALA*     1.3    77.2    -      -       -      +
    182B  ASP*     1.3    61.2    +      -       -      +
    184B  TRP*     3.3    17.0    +      -       -      +
    185B  LEU*     3.6     4.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 182 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  LEU*     4.4     0.2    -      -       -      +
     13A  GLN*     2.9    29.3    +      -       -      +
     17A  TRP*     3.7     3.8    -      -       +      -
    118B  LEU*     5.6     3.4    -      -       +      -
    178B  GLY      3.3    11.5    +      -       -      +
    179B  MET      3.3     8.1    +      -       -      +
    181B  GLY*     1.3    74.7    -      -       -      +
    183B  SER*     1.3    58.6    +      -       -      +
    185B  LEU*     3.2     4.3    +      -       -      +
    186B  PHE*     2.8    26.9    +      -       -      +
    267B  LYS*     2.7    26.0    +      -       -      -
    268B  TRP*     3.3    18.5    -      -       +      -
    361B  ARG*     2.7    42.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 183 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179B  MET*     3.0    14.4    +      -       -      +
    180B  ALA*     3.3     7.7    +      -       -      -
    182B  ASP*     1.3    72.9    -      -       -      +
    184B  TRP*     1.3    63.5    +      -       -      +
    186B  PHE*     4.5     1.6    -      -       -      +
    187B  SER*     2.8    32.8    +      -       -      +
    213B  ASN*     3.8    17.0    -      -       -      +
    214B  THR*     3.4    21.0    +      -       -      -
    267B  LYS*     2.9    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 184 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  MET*     3.8    35.2    -      -       +      -
    112B  PRO*     3.4    44.7    -      -       +      +
    113B  TYR*     3.5    28.5    -      +       +      -
    180B  ALA      3.1    12.2    +      -       -      +
    181B  GLY      3.3    12.8    -      -       -      +
    182B  ASP      3.2     0.4    -      -       -      -
    183B  SER*     1.3    79.2    -      -       -      +
    185B  LEU*     1.3    68.0    +      -       +      +
    187B  SER*     3.3     4.8    +      -       -      -
    188B  ARG*     2.8    76.3    +      -       -      +
    213B  ASN*     3.8    19.0    -      -       -      +
    241B  GLN*     5.8     3.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 185 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ALA*     3.8    22.3    -      -       +      +
      9A  LEU*     3.8    48.5    -      -       +      +
     10A  LEU*     4.0    12.7    -      -       +      +
     13A  GLN*     4.2    15.0    -      -       -      +
    106B  LEU*     4.1     8.1    -      -       +      -
    113B  TYR*     3.5    31.4    -      -       +      -
    181B  GLY      3.6     2.8    +      -       -      +
    182B  ASP      3.2     6.1    +      -       -      +
    184B  TRP*     1.3    99.0    -      -       +      +
    186B  PHE*     1.3    68.0    +      -       -      +
    187B  SER      3.2     0.4    +      -       -      -
    188B  ARG*     3.3     4.1    +      -       -      +
    189B  ALA*     3.2    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 186 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  LEU*     3.7    21.9    -      -       +      +
    182B  ASP*     2.8    30.4    +      -       -      +
    183B  SER      4.5     0.7    -      -       -      +
    185B  LEU*     1.3    74.0    -      -       -      +
    187B  SER*     1.3    60.5    +      -       -      +
    189B  ALA*     3.2     2.6    +      -       -      +
    190B  LEU*     2.8    42.7    +      -       +      +
    214B  THR*     5.9     1.1    -      -       +      -
    267B  LYS*     4.2    20.0    -      -       +      -
    301B  ALA*     3.6    33.7    -      -       +      -
    357B  VAL*     3.7    31.0    -      -       +      -
    358B  GLY      4.1     1.6    -      -       -      -
    361B  ARG*     3.6    48.0    -      -       +      -
    362B  VAL      4.5     2.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 187 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183B  SER      2.8    23.0    +      -       -      -
    184B  TRP      3.3     2.8    +      -       -      -
    186B  PHE*     1.3    79.3    -      -       -      +
    188B  ARG*     1.3    60.3    +      -       -      +
    190B  LEU*     3.3     9.9    +      -       -      +
    191B  VAL*     3.1    34.7    +      -       -      +
    213B  ASN      3.9     1.4    +      -       -      -
    214B  THR*     3.9    27.4    -      -       -      -
    217B  VAL*     3.2    33.9    -      -       -      +
    218B  ILE*     5.5     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 188 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A  MET*     5.1     8.8    +      -       -      +
      3A  ALA*     4.9     3.6    -      -       -      +
      6A  ALA*     3.9    19.2    -      -       +      +
    184B  TRP*     2.8    84.8    +      -       -      +
    185B  LEU      3.3     7.5    +      -       -      +
    187B  SER*     1.3    83.3    +      -       -      +
    189B  ALA*     1.3    59.2    +      -       -      +
    191B  VAL*     3.6    10.4    -      -       +      +
    192B  SER*     3.5    17.2    -      -       -      -
    213B  ASN      5.3     0.2    +      -       -      -
    216B  LYS*     6.3     0.4    -      -       -      +
    217B  VAL*     3.2    36.0    -      -       +      +
    220B  GLU*     5.0     6.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 189 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  ALA*     4.4     2.1    -      -       -      +
      7A  VAL*     3.9    32.5    -      -       +      +
     10A  LEU*     3.6    31.2    -      -       +      -
    185B  LEU      3.2     9.8    +      -       -      +
    186B  PHE      3.6     3.1    -      -       -      +
    188B  ARG*     1.3    73.9    -      -       -      +
    190B  LEU*     1.3    58.1    +      -       -      +
    192B  SER*     3.2     0.9    +      -       -      -
    193B  LYS*     2.7    38.8    +      -       -      +
    357B  VAL*     3.7     9.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 190 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186B  PHE*     2.8    38.8    +      -       +      +
    187B  SER*     3.3    10.7    +      -       -      +
    189B  ALA*     1.3    76.7    -      -       -      +
    191B  VAL*     1.3    58.2    +      -       -      +
    194B  CYS*     2.8    48.8    +      -       +      +
    198B  PHE*     3.9    24.8    -      -       +      -
    214B  THR*     4.8    14.6    -      -       +      -
    218B  ILE*     5.0     5.4    -      -       +      -
    265B  LEU*     5.0     8.1    -      -       +      -
    267B  LYS*     5.9     0.4    -      -       +      -
    301B  ALA*     4.8     7.0    -      -       +      -
    357B  VAL*     3.8    25.7    -      -       +      +
    363B  LEU*     4.2    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 191 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187B  SER      3.1    18.3    +      -       -      +
    188B  ARG*     3.6     9.9    -      -       -      +
    190B  LEU*     1.3    76.3    -      -       +      +
    192B  SER*     1.3    60.9    +      -       -      +
    195B  ARG*     3.4    27.9    +      -       -      +
    198B  PHE*     4.2    12.1    -      -       +      -
    217B  VAL*     4.0    16.8    -      -       +      -
    218B  ILE*     4.1    25.4    -      -       +      -
    221B  THR*     3.5    25.0    -      -       +      +
    222B  PHE*     3.7    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 192 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3A  ALA*     3.1    33.4    -      -       -      +
      7A  VAL*     5.2     3.1    -      -       -      +
    188B  ARG      3.5    12.1    +      -       -      -
    189B  ALA*     3.2     4.4    +      -       -      -
    190B  LEU      3.1     0.2    -      -       -      -
    191B  VAL*     1.3    80.3    -      -       -      +
    193B  LYS*     1.3    69.3    +      -       -      +
    194B  CYS      3.2     1.8    +      -       -      -
    195B  ARG*     3.6    13.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 193 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  VAL*     3.8    32.6    -      -       +      +
    189B  ALA      2.7    23.2    +      -       -      +
    192B  SER*     1.3    76.0    -      -       -      +
    194B  CYS*     1.3    62.9    +      -       -      +
    195B  ARG      3.8     0.7    +      -       -      -
    355B  THR*     4.0    10.6    -      -       -      +
    356B  PRO      3.8    18.8    -      -       -      +
    357B  VAL*     3.7    28.5    -      -       -      +
----------------------------------------------------------
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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