Contacts of the helix formed by residues 190 - 215 (chain G) in PDB entry 2EG5


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 190 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178G  THR*     4.8    17.5    -      -       +      +
    179G  ASN*     5.2     0.8    +      -       -      -
    180G  LYS      6.3     0.2    -      -       -      +
    188G  ALA      3.8     1.6    +      -       -      -
    189G  SER*     1.3    75.8    -      -       -      +
    191G  LEU*     1.3    66.2    +      -       -      +
    192G  PRO*     3.9    13.5    -      -       +      -
    193G  VAL*     3.0    26.3    +      -       +      +
    194G  GLN*     3.3     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 191 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189G  SER      3.6     1.6    +      -       -      -
    190G  ARG*     1.3    69.6    -      -       -      +
    192G  PRO*     1.4    71.6    -      -       +      +
    194G  GLN*     3.3    22.1    +      -       +      +
    195G  LYS*     3.0    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 192 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178G  THR*     5.0    13.7    -      -       +      -
    190G  ARG*     3.4    16.6    -      -       +      -
    191G  LEU*     1.4    96.4    -      -       +      +
    193G  VAL*     1.3    56.0    +      -       -      +
    195G  LYS*     3.6    11.1    -      -       +      +
    196G  ALA*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 193 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170G  LEU*     4.9     7.9    -      -       +      -
    178G  THR*     4.0    20.0    -      -       +      -
    179G  ASN*     3.6    52.5    -      -       +      +
    185G  SER*     4.3     2.7    -      -       -      -
    189G  SER*     4.2    11.7    -      -       -      +
    190G  ARG*     3.0    22.8    +      -       +      +
    192G  PRO*     1.3    74.2    -      -       -      +
    194G  GLN*     1.3    59.5    +      -       -      +
    196G  ALA*     3.2     6.6    +      -       -      +
    197G  TYR*     3.0    46.4    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 194 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185G  SER*     3.3    22.4    +      -       -      +
    186G  SER      3.3    18.6    -      -       -      +
    187G  LYS*     4.1    12.3    +      -       -      -
    189G  SER*     3.6    19.1    +      -       -      +
    190G  ARG      3.3    10.0    +      -       -      +
    191G  LEU*     3.3    25.3    +      -       +      +
    193G  VAL*     1.3    75.5    -      -       -      +
    195G  LYS*     1.3    59.0    +      -       -      +
    197G  TYR*     3.9     1.0    -      -       -      +
    198G  LEU*     2.9    33.2    +      -       -      +
    229G  LYS*     6.2     0.2    -      -       -      -
    268G  TYR*     4.9     2.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 195 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191G  LEU*     3.0    25.3    +      -       +      +
    192G  PRO*     3.6    10.5    -      -       +      +
    194G  GLN*     1.3    76.9    -      -       -      +
    196G  ALA*     1.3    58.4    +      -       -      +
    198G  LEU*     4.7     4.5    -      -       -      -
    199G  ASP*     2.7    69.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 196 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167G  PRO*     3.6    22.9    -      -       +      +
    168G  SER      5.4     0.3    +      -       -      -
    169G  GLY*     4.5    19.9    +      -       -      +
    170G  LEU*     4.6    10.3    -      -       +      -
    192G  PRO      2.9    18.4    +      -       -      +
    193G  VAL*     3.2     7.6    +      -       -      +
    195G  LYS*     1.3    77.5    -      -       -      +
    197G  TYR*     1.3    57.7    +      -       +      +
    199G  ASP*     3.5     6.2    +      -       -      +
    200G  GLN*     3.0    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 197 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163G  LEU*     4.1     6.9    -      -       +      +
    167G  PRO*     3.5    24.9    -      -       +      -
    170G  LEU*     3.6    20.0    -      -       +      -
    179G  ASN*     4.5     1.8    -      -       -      -
    183G  ILE      3.5     8.7    +      -       -      -
    184G  TYR*     3.7     9.9    -      -       -      -
    185G  SER*     3.7    23.3    -      -       -      -
    193G  VAL*     3.0    35.4    +      -       +      +
    194G  GLN      4.0     1.8    -      -       -      +
    196G  ALA*     1.3    74.5    -      -       -      +
    198G  LEU*     1.3    59.2    +      -       -      +
    200G  GLN*     3.2     3.5    +      -       -      +
    201G  PHE*     2.9    28.4    +      -       -      +
    264G  ASN*     3.2    21.5    +      -       -      +
    265G  LEU      2.8    29.8    +      -       -      -
    267G  VAL      3.3    23.8    -      -       -      -
    268G  TYR*     3.7    21.1    -      +       +      +
----------------------------------------------------------
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Residues in contact with LEU 198 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194G  GLN      2.9    19.2    +      -       -      +
    195G  LYS*     4.0     4.7    -      -       -      +
    197G  TYR*     1.3    73.7    -      -       -      +
    199G  ASP*     1.3    64.9    +      -       -      +
    201G  PHE*     3.7     4.9    -      -       +      +
    202G  THR*     2.9    46.1    +      -       -      +
    268G  TYR*     3.5    33.1    -      -       +      +
    274G  GLU*     3.7    31.0    -      -       +      +
    278G  ILE*     5.4     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 199 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195G  LYS*     2.7    57.5    +      -       -      +
    196G  ALA*     3.8     7.2    -      -       -      +
    198G  LEU*     1.3    81.3    -      -       -      +
    200G  GLN*     1.3    62.3    +      -       -      +
    202G  THR*     3.8     5.1    -      -       -      -
    203G  LYS*     3.1    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 200 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163G  LEU*     3.7    21.3    -      -       +      -
    164G  SER*     2.8    27.9    +      -       -      -
    165G  GLN*     3.6    27.8    +      -       -      +
    167G  PRO*     4.0    11.2    -      -       +      -
    168G  SER*     3.6    21.7    +      -       -      +
    196G  ALA      3.0    17.2    +      -       -      +
    197G  TYR      3.2     4.0    +      -       -      +
    199G  ASP*     1.3    75.3    -      -       -      +
    201G  PHE*     1.3    62.7    +      -       -      +
    203G  LYS*     3.1    16.4    +      -       -      +
    204G  ASP*     2.9    47.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 201 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160G  LEU*     4.0    23.3    -      -       +      -
    163G  LEU*     3.7    21.0    -      -       +      +
    197G  TYR      2.9    11.7    +      -       -      +
    198G  LEU*     3.7     8.7    -      -       +      +
    200G  GLN*     1.3    74.5    -      -       -      +
    202G  THR*     1.3    54.2    +      -       -      +
    204G  ASP*     4.5     1.3    -      -       +      -
    205G  PHE*     2.8    63.2    +      +       +      +
    226G  CYS*     6.4     1.1    -      -       -      -
    268G  TYR*     3.4    40.6    -      +       +      -
    270G  PRO*     3.8    33.7    -      -       +      -
    274G  GLU      5.0     0.7    -      -       -      -
    275G  VAL*     4.2    11.2    -      -       +      -
    278G  ILE*     3.5    28.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 202 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    198G  LEU*     2.9    34.7    +      -       -      +
    199G  ASP*     3.8     6.5    -      -       -      -
    201G  PHE*     1.3    75.5    -      -       -      +
    203G  LYS*     1.3    62.3    +      -       -      +
    205G  PHE*     4.3     0.3    -      -       -      +
    206G  THR*     2.5    40.9    +      -       -      +
    278G  ILE*     3.7    28.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 203 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164G  SER*     4.8     5.1    +      -       -      -
    165G  GLN*     5.9     1.0    +      -       -      -
    199G  ASP      3.1    13.6    +      -       -      +
    200G  GLN*     3.5    18.8    -      -       -      +
    202G  THR*     1.3    79.4    -      -       -      +
    204G  ASP*     1.3    69.6    +      -       -      +
    206G  THR*     3.8     3.6    -      -       -      -
    207G  THR*     2.8    49.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 204 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142G  TYR*     3.4    28.3    -      -       +      +
    163G  LEU*     3.6    11.4    -      -       +      +
    164G  SER*     2.6    52.3    +      -       -      -
    200G  GLN*     2.9    29.4    +      -       -      +
    201G  PHE*     3.8     5.6    -      -       +      +
    203G  LYS*     1.3    86.6    +      -       -      +
    205G  PHE*     1.3    60.2    +      -       -      +
    207G  THR*     3.4     3.7    +      -       -      -
    208G  PHE*     2.9    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 205 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142G  TYR*     5.1     1.8    -      -       -      -
    160G  LEU*     3.9    32.1    -      -       +      -
    201G  PHE*     2.8    52.5    +      +       +      +
    204G  ASP*     1.3    71.7    -      -       -      +
    206G  THR*     1.3    59.0    +      -       -      +
    208G  PHE*     3.4     9.1    -      +       +      +
    209G  LEU*     3.0    46.3    +      -       +      +
    224G  LEU*     4.1    16.4    -      -       +      -
    226G  CYS*     5.6     2.0    -      -       -      -
    275G  VAL*     3.7    42.4    -      -       +      -
    278G  ILE*     3.6    20.9    -      -       +      -
    279G  VAL*     3.9    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 206 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    202G  THR*     2.5    31.3    +      -       -      +
    203G  LYS*     3.8     4.7    -      -       -      -
    205G  PHE*     1.3    75.8    -      -       -      +
    207G  THR*     1.3    53.5    +      -       -      +
    209G  LEU*     3.3     3.4    +      -       -      +
    210G  ARG*     2.8    38.1    +      -       +      +
    278G  ILE*     3.5    18.0    -      -       -      +
    282G  GLU*     3.2    32.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 207 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142G  TYR*     3.4    31.0    -      -       +      +
    203G  LYS*     2.8    39.8    +      -       -      +
    204G  ASP*     3.5     7.9    -      -       -      +
    206G  THR*     1.3    73.2    -      -       -      +
    208G  PHE*     1.3    60.1    +      -       -      +
    210G  ARG*     3.8     4.9    -      -       -      +
    211G  ILE*     2.9    47.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 208 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60G  LEU*     3.6    25.6    -      -       +      -
    141G  PHE*     3.4    43.3    -      +       -      -
    142G  TYR*     4.3     5.6    -      +       +      -
    156G  SER*     4.5     4.7    -      -       -      -
    160G  LEU*     3.8    21.5    -      -       +      -
    204G  ASP      2.9    14.5    +      -       -      +
    205G  PHE*     3.4    26.0    -      +       -      +
    207G  THR*     1.3    74.7    -      -       -      +
    209G  LEU*     1.3    69.3    +      -       -      +
    211G  ILE*     3.9     1.1    -      -       -      -
    212G  HIS*     3.0    47.6    +      +       -      +
    222G  MET*     3.9    15.3    -      -       +      -
    224G  LEU*     3.9    28.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 209 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    205G  PHE*     3.0    42.7    +      -       +      +
    206G  THR      3.7     1.1    -      -       -      +
    208G  PHE*     1.3    81.3    -      -       +      +
    210G  ARG*     1.3    65.6    +      -       -      +
    213G  SER*     3.0    26.3    +      -       -      -
    222G  MET*     3.4    28.0    -      -       +      -
    278G  ILE*     4.2     2.9    -      -       +      +
    279G  VAL*     3.8    36.3    -      -       +      +
    282G  GLU*     3.6    28.0    -      -       +      -
    285G  PHE*     3.5    17.9    -      -       +      -
    363G  LEU*     4.0    12.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 210 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206G  THR*     2.8    27.3    +      -       +      +
    207G  THR*     3.8     6.1    -      -       -      +
    209G  LEU*     1.3    73.9    -      -       -      +
    211G  ILE*     1.3    65.0    +      -       +      +
    213G  SER*     2.6    21.1    +      -       -      -
    214G  GLU*     3.4    29.5    +      -       -      +
    281G  GLU      5.3     0.4    +      -       -      -
    282G  GLU*     2.7    57.2    +      -       -      +
    284G  SER*     3.7     6.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 211 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141G  PHE      4.8     1.8    -      -       -      +
    142G  TYR      3.4    24.5    -      -       -      +
    143G  SER*     3.6    31.9    -      -       -      +
    144G  ARG*     3.4    25.9    +      -       +      +
    207G  THR*     2.9    29.6    +      -       +      +
    208G  PHE      4.0     0.2    -      -       -      +
    210G  ARG*     1.3    79.3    -      -       +      +
    212G  HIS*     1.3    76.8    +      -       +      +
    214G  GLU*     3.3    30.2    +      -       -      +
    215G  GLU*     3.7     2.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 212 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60G  LEU*     4.0     6.6    -      -       +      +
    141G  PHE*     2.6    36.3    +      -       +      +
    143G  SER      3.9    11.0    -      -       -      -
    145G  LEU*     3.8    25.4    -      -       +      -
    154G  LEU*     3.6    21.7    -      -       +      +
    208G  PHE*     3.0    45.3    +      +       -      +
    211G  ILE*     1.3    76.7    -      -       +      +
    213G  SER*     1.3    63.9    +      -       -      +
    215G  GLU*     2.6    39.6    +      -       -      +
    216G  LEU*     3.5    17.0    +      -       -      +
    222G  MET*     4.0    10.3    -      -       -      -
    285G  PHE*     4.6     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 213 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209G  LEU      3.0    15.0    +      -       -      -
    210G  ARG*     2.6    24.1    +      -       -      -
    212G  HIS*     1.3    75.2    -      -       -      +
    214G  GLU*     1.3    63.1    +      -       -      +
    216G  LEU*     2.9    22.0    +      -       -      +
    284G  SER*     3.3    32.1    +      -       -      -
    285G  PHE*     3.7    18.6    -      -       -      -
    365G  LYS*     3.0    28.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 214 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144G  ARG*     3.7    16.7    +      -       -      +
    148G  GLU*     3.2    14.4    -      -       +      +
    149G  GLU*     2.8    23.9    +      -       -      +
    210G  ARG*     3.4    36.9    -      -       -      +
    211G  ILE*     3.3    22.3    +      -       -      +
    213G  SER*     1.3    83.2    +      -       -      +
    215G  GLU*     1.3    54.7    +      -       -      +
    216G  LEU      4.2     1.0    -      -       -      +
    365G  LYS*     4.4     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 215 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144G  ARG*     3.1    32.0    +      -       -      +
    145G  LEU*     2.7    31.7    +      -       -      -
    146G  PHE*     3.1    32.8    +      -       +      +
    147G  PRO      3.6     6.9    -      -       -      +
    149G  GLU      3.4     4.3    -      -       -      +
    150G  SER      2.5    30.8    +      -       -      -
    151G  MET*     3.0    11.9    +      -       +      -
    154G  LEU*     4.1     4.5    -      -       +      +
    211G  ILE*     3.7     6.0    -      -       -      +
    212G  HIS*     2.6    40.3    +      -       -      +
    213G  SER      3.0     0.6    +      -       -      -
    214G  GLU*     1.3    76.2    -      -       -      +
    216G  LEU*     1.3    57.9    +      -       -      +
----------------------------------------------------------
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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
------------------------------------------------------------
  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