Contacts of the helix formed by residues 260 - 282 (chain C) in PDB entry 3PK1


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 ASN 260 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258C  VAL*     4.1    14.3    -      -       +      +
    259C  THR*     1.3    76.1    -      -       -      +
    261C  TRP*     1.3    63.6    +      -       -      +
    262C  GLY*     3.1     2.9    +      -       -      -
    263C  ARG*     2.7    41.9    +      -       -      +
    264C  ILE*     3.1    21.7    +      -       -      +
    305C  TRP*     3.8    12.6    -      -       -      -
     67D  GLY      4.0     0.5    -      -       -      +
     68D  ASP*     3.1    24.4    +      -       -      +
     71D  ASP*     3.3    38.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 261 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260C  ASN*     1.3    72.3    -      -       -      +
    262C  GLY*     1.3    56.2    +      -       -      +
    264C  ILE*     3.7    31.6    -      -       +      +
    265C  VAL*     2.7    37.9    +      -       -      +
    305C  TRP*     3.6    21.5    -      +       -      -
    306C  LEU*     3.7    21.1    -      -       +      -
    309C  GLN*     4.0    19.1    +      -       +      +
    311C  GLY*     3.4    25.8    -      -       -      -
    312C  TRP*     5.1    11.2    -      +       -      -
    314C  GLY*     4.1     4.0    -      -       -      -
    315C  PHE*     3.5    48.7    -      +       +      +
    318C  PHE*     3.7    45.5    -      +       +      +
    319C  PHE*     3.8     9.2    -      -       +      -
     71D  ASP*     3.9     2.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 262 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260C  ASN*     3.1     4.1    +      -       -      -
    261C  TRP*     1.3    78.8    -      -       -      +
    263C  ARG*     1.3    52.1    +      -       -      +
    265C  VAL*     3.5     2.6    -      -       -      +
    266C  THR*     2.5    36.9    +      -       -      -
    319C  PHE*     4.6     2.5    -      -       -      -
     67D  GLY*     3.1    24.2    -      -       -      -
     70D  LEU*     4.1    13.4    -      -       -      +
     71D  ASP*     3.6    15.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 263 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253C  VAL*     3.1    36.2    +      -       +      -
    254C  PHE*     3.8    12.6    -      -       +      -
    256C  ASP*     2.9    32.5    +      -       -      -
    258C  VAL*     3.0    42.0    +      -       -      +
    260C  ASN*     2.7    28.8    +      -       -      +
    262C  GLY*     1.3    70.0    -      -       -      +
    264C  ILE*     1.3    68.5    +      -       -      +
    266C  THR*     3.1     3.8    +      -       -      -
    267C  LEU*     2.9    28.8    +      -       -      +
     63D  LEU      5.0     1.3    -      -       -      -
     64D  LYS*     3.5    18.8    -      -       -      +
     67D  GLY*     3.7    11.4    -      -       -      -
     68D  ASP*     2.8    38.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 264 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254C  PHE*     3.9    21.5    -      -       +      -
    259C  THR*     3.9     7.0    -      -       +      -
    260C  ASN      3.1    14.1    +      -       -      +
    261C  TRP*     3.7    28.7    -      -       +      +
    263C  ARG*     1.3    79.2    -      -       -      +
    265C  VAL*     1.3    62.4    +      -       -      +
    267C  LEU*     3.2     6.2    +      -       -      +
    268C  ILE*     3.2    29.0    +      -       +      +
    298C  LEU*     3.4    31.0    -      -       +      -
    302C  LYS*     5.5     2.0    -      -       +      -
    305C  TRP*     3.3    35.9    -      -       +      -
    306C  LEU*     3.9    11.2    -      -       +      -
    312C  TRP*     5.6     2.0    -      -       +      -
    315C  PHE*     5.8     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 265 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213C  LEU*     3.7    28.9    -      -       +      -
    216C  VAL*     4.1    19.7    -      -       +      -
    217C  GLY      5.0     3.1    -      -       -      +
    220C  VAL*     4.4     4.9    -      -       +      -
    261C  TRP      2.7    18.9    +      -       -      +
    262C  GLY      3.5     2.7    -      -       -      +
    264C  ILE*     1.3    75.6    -      -       -      +
    266C  THR*     1.3    59.7    -      -       -      +
    268C  ILE*     3.4     5.4    +      -       +      +
    269C  SER*     3.0    33.2    +      -       -      +
    315C  PHE*     3.8    19.1    -      -       +      -
    319C  PHE*     4.6     4.0    -      -       +      -
     70D  LEU*     3.2    34.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 266 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220C  VAL*     4.7     3.7    -      -       +      +
    228C  PHE*     4.2     6.7    -      -       +      -
    262C  GLY      2.5    21.9    +      -       -      -
    263C  ARG*     3.4     5.8    -      -       -      -
    265C  VAL*     1.3    81.8    -      -       -      +
    267C  LEU*     1.3    57.6    +      -       +      +
    269C  SER*     3.4     6.6    +      -       -      -
    270C  PHE*     3.1    27.4    +      -       -      +
     63D  LEU*     3.6    38.8    -      -       +      +
     66D  ILE*     3.8    22.7    +      -       +      +
     67D  GLY*     3.1    16.9    +      -       -      -
     70D  LEU*     4.5     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 267 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246C  LEU*     6.1     0.2    -      -       -      +
    250C  MET*     3.8    45.8    -      -       +      +
    253C  VAL*     4.0    25.1    -      -       +      -
    254C  PHE*     3.6    31.9    -      -       +      -
    263C  ARG      2.9    15.3    +      -       -      +
    264C  ILE*     3.4     9.4    -      -       -      +
    266C  THR*     1.3    78.1    -      -       -      +
    268C  ILE*     1.3    60.2    +      -       +      +
    270C  PHE*     3.5     4.9    +      -       +      +
    271C  GLY*     3.0    21.8    +      -       -      -
    294C  ILE*     4.2    10.0    -      -       +      +
    297C  VAL*     5.1     0.7    -      -       +      -
    298C  LEU*     4.4    10.3    -      -       +      -
     63D  LEU*     4.1    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 268 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182C  ILE*     3.9    27.8    -      -       +      -
    185C  TYR*     3.8    24.7    -      -       +      -
    186C  LEU*     3.7    12.0    -      -       +      +
    213C  LEU*     4.2    22.4    -      -       +      -
    264C  ILE*     3.2    20.7    +      -       +      +
    265C  VAL*     3.9     6.7    -      -       +      +
    266C  THR      3.3     0.2    -      -       -      -
    267C  LEU*     1.3    74.3    -      -       -      +
    269C  SER*     1.3    61.5    +      -       -      +
    271C  GLY*     3.2     3.2    +      -       -      +
    272C  ALA*     2.8    23.7    +      -       -      +
    294C  ILE*     4.0    23.6    -      -       +      -
    298C  LEU*     4.2     9.2    -      -       +      -
    312C  TRP*     4.1    17.0    -      -       +      -
    315C  PHE*     6.0     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 269 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185C  TYR*     4.6     3.2    -      -       -      -
    213C  LEU*     6.0     0.3    -      -       -      +
    217C  GLY*     3.0    42.1    +      -       -      -
    220C  VAL*     3.5    18.4    -      -       -      +
    221C  GLN*     3.5     9.5    -      -       -      -
    228C  PHE*     4.0     2.5    -      -       -      -
    265C  VAL*     3.0    17.8    +      -       -      +
    266C  THR      3.8     4.9    -      -       -      -
    267C  LEU      3.3     0.2    -      -       -      -
    268C  ILE*     1.3    74.3    -      -       -      +
    270C  PHE*     1.3    59.6    +      -       -      +
    272C  ALA*     3.2     8.8    +      -       -      +
    273C  PHE*     2.8    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 270 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228C  PHE*     3.5    53.8    -      +       +      -
    231C  MET*     3.9    15.9    -      -       +      -
    232C  LEU*     3.9    12.3    -      -       -      -
    235C  LEU*     3.2    37.2    -      -       +      -
    246C  LEU*     3.6    18.4    -      -       +      -
    249C  VAL*     6.0     0.4    -      -       +      -
    266C  THR      3.1    17.0    +      -       -      +
    267C  LEU*     3.8     6.3    -      -       +      +
    269C  SER*     1.3    72.9    -      -       -      +
    271C  GLY*     1.3    56.7    +      -       -      +
    273C  PHE*     3.4     4.1    -      +       -      +
    274C  VAL*     2.7    56.1    +      -       +      +
     59D  LEU*     5.7     0.7    -      -       +      -
     63D  LEU*     4.0    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 271 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186C  LEU*     3.9     7.0    -      -       -      -
    246C  LEU*     5.0     4.5    -      -       -      +
    267C  LEU      3.0    11.7    +      -       -      -
    268C  ILE      3.2     5.3    +      -       -      -
    270C  PHE*     1.3    78.0    -      -       -      +
    272C  ALA*     1.3    54.8    +      -       -      +
    274C  VAL*     3.3     5.4    +      -       -      -
    275C  ALA*     2.8    25.3    +      -       -      +
    290C  LEU*     3.3    12.6    -      -       -      +
    294C  ILE*     3.6    24.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 272 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185C  TYR*     3.7    15.9    -      -       +      -
    186C  LEU*     3.6    12.0    -      -       +      +
    189C  GLN*     3.5    24.9    -      -       +      +
    221C  GLN*     3.3    23.6    -      -       -      +
    268C  ILE      2.8     9.8    +      -       -      +
    269C  SER      3.2     4.7    +      -       -      +
    271C  GLY*     1.3    71.7    -      -       -      +
    273C  PHE*     1.3    56.2    +      -       -      +
    275C  ALA*     3.1     4.1    +      -       -      +
    276C  LYS*     2.9    34.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 273 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221C  GLN*     3.4    23.5    -      -       +      +
    225C  GLU*     3.8    24.7    -      -       +      -
    228C  PHE*     3.4    52.7    -      +       +      -
    229C  GLN*     3.3    38.1    -      -       -      -
    232C  LEU*     3.8    18.8    -      -       +      -
    269C  SER      2.8    16.4    +      -       -      +
    270C  PHE*     3.4     9.4    -      +       -      +
    272C  ALA*     1.3    76.5    -      -       -      +
    274C  VAL*     1.3    62.9    +      -       -      +
    276C  LYS*     3.5     8.3    +      -       +      +
    277C  HIS*     3.3    17.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 274 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232C  LEU*     4.3    16.6    -      -       +      -
    235C  LEU*     4.2     7.0    -      -       +      -
    237C  ILE*     3.5    32.5    -      -       +      -
    246C  LEU*     4.7     4.3    -      -       +      -
    270C  PHE*     2.7    59.2    +      -       +      +
    271C  GLY*     3.7     5.8    -      -       -      +
    273C  PHE*     1.3    73.1    -      -       +      +
    275C  ALA*     1.3    64.8    +      -       -      +
    277C  HIS*     3.1    12.2    +      -       -      +
    278C  LEU*     3.1    14.6    +      -       +      +
    290C  LEU*     4.2    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 275 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186C  LEU*     3.9    24.7    -      -       +      +
    190C  ALA*     3.5    12.0    -      -       +      +
    271C  GLY      2.8    20.2    +      -       -      +
    272C  ALA*     3.1     7.8    +      -       -      +
    274C  VAL*     1.3    73.0    -      -       -      +
    276C  LYS*     1.3    63.7    +      -       -      +
    278C  LEU*     3.5    13.8    +      -       -      +
    279C  LYS*     3.6     8.7    +      -       -      +
    287C  ILE*     3.9    16.2    -      -       +      +
    290C  LEU*     3.7    16.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 276 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189C  GLN*     3.0    62.2    -      -       -      +
    190C  ALA*     4.2     8.7    -      -       -      +
    221C  GLN*     3.2    25.2    -      -       -      +
    272C  ALA      2.9    14.9    +      -       -      +
    273C  PHE*     3.8     7.7    -      -       +      +
    274C  VAL      3.2     0.2    -      -       -      -
    275C  ALA*     1.3    74.1    -      -       -      +
    277C  HIS*     1.3    66.9    +      -       -      +
    278C  LEU      3.4     0.3    +      -       -      -
    279C  LYS*     3.4    12.0    +      -       -      +
    280C  THR*     3.4    12.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 277 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1A   CD      2.3    34.9    -      -       -      -
    222A  ARG      5.8     3.6    -      -       -      -
    225A  GLU*     3.5    10.7    +      -       -      -
    232C  LEU*     3.8    34.5    -      -       +      +
    237C  ILE*     5.2     6.5    -      -       +      -
    273C  PHE*     3.3     9.7    +      -       +      +
    274C  VAL      3.1     9.4    +      -       -      +
    276C  LYS*     1.3    80.1    -      -       -      +
    278C  LEU*     1.3    65.9    +      -       +      +
    280C  THR*     2.9    32.7    +      -       +      -
    281C  ILE*     3.1    37.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 278 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237C  ILE*     3.9    42.6    -      -       +      +
    238C  LYS      5.4     0.2    -      -       -      -
    239C  ASN*     4.5    12.1    -      -       -      -
    240C  GLU*     3.9    28.0    -      -       +      +
    274C  VAL*     3.1    16.8    +      -       +      +
    275C  ALA*     3.8     8.5    -      -       -      +
    276C  LYS      3.3     0.2    -      -       -      -
    277C  HIS*     1.3    82.4    -      -       +      +
    279C  LYS*     1.3    51.9    +      -       +      +
    281C  ILE*     3.0    13.8    +      -       +      +
    282C  ASN*     2.8    32.6    +      -       -      +
    285C  SER*     3.6    14.2    +      -       -      +
    286C  CYS      5.0     5.8    -      -       -      +
    287C  ILE*     6.4     1.1    -      -       +      -
    290C  LEU*     4.9    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 279 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190C  ALA*     3.9    26.6    -      -       +      +
    191C  THR*     4.6    22.0    -      -       -      +
    275C  ALA      3.6    12.5    +      -       -      +
    276C  LYS      3.4     7.0    +      -       -      +
    277C  HIS      3.2     0.6    -      -       -      -
    278C  LEU*     1.3    71.6    -      -       +      +
    280C  THR*     1.3    65.9    +      -       -      +
    281C  ILE      2.9     2.0    +      -       -      -
    282C  ASN      3.1    13.4    +      -       -      +
    283C  GLN*     3.0    67.8    +      -       -      +
    284C  GLU      3.9     2.4    +      -       -      -
    285C  SER*     2.9    29.5    +      -       -      +
    286C  CYS*     5.0     3.8    -      -       -      +
    287C  ILE*     6.0     3.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 280 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222A  ARG*     3.7    36.1    +      -       +      -
    225A  GLU*     5.2     7.8    +      -       -      +
    276C  LYS      3.4     8.5    +      -       -      -
    277C  HIS*     2.9    25.9    +      -       +      +
    279C  LYS*     1.3    77.4    -      -       -      +
    281C  ILE*     1.3    71.8    +      -       +      +
    283C  GLN*     4.3     5.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 281 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222A  ARG*     4.8     7.4    -      -       +      -
    238C  LYS      5.1     9.9    -      -       -      +
    239C  ASN*     6.4     0.9    -      -       -      -
    277C  HIS*     3.4    39.7    -      -       +      +
    278C  LEU*     3.0    17.0    +      -       +      +
    279C  LYS      2.9     0.6    -      -       -      -
    280C  THR*     1.3   100.2    -      -       +      +
    282C  ASN*     1.3    63.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 282 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240C  GLU*     5.7     0.2    +      -       -      -
    278C  LEU      2.8     7.0    +      -       -      +
    279C  LYS*     3.1     6.9    +      -       -      +
    281C  ILE*     1.3    85.1    -      -       +      +
    283C  GLN*     1.3    59.2    +      -       -      +
    284C  GLU*     2.8    35.0    +      -       -      +
    285C  SER*     2.8    54.1    +      -       -      +
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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