Contacts of the helix formed by residues 198 - 220 (chain E) in PDB entry 1XFB


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 198 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    196E  ASP      3.8     1.2    +      -       -      -
    197E  HIS*     1.3    79.0    -      -       -      +
    199E  LEU*     1.3    66.1    +      -       -      +
    200E  LYS*     3.1    36.9    +      -       -      +
    201E  ARG*     3.2    27.2    +      -       -      +
    202E  CYS*     3.3     8.1    +      -       -      +
    236E  PRO*     4.1     2.0    -      -       -      -
    240E  CYS*     4.0    15.5    -      -       -      -
    242E  ILE*     4.3     9.5    -      -       +      +
    244E  TYR*     3.4    14.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 199 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    198E  ASP*     1.3    74.1    -      -       -      +
    200E  LYS*     1.3    65.0    +      -       -      +
    202E  CYS*     3.1     4.2    +      -       -      +
    203E  GLN*     3.0    21.2    +      -       -      +
    234E  VAL*     3.3    19.5    -      -       +      +
    235E  THR*     3.2    33.0    -      -       -      -
    236E  PRO*     3.8    14.0    -      -       +      +
    244E  TYR*     3.3    42.7    +      -       +      -
    248E  GLU*     3.6    28.7    -      -       +      +
    249E  ILE*     4.4     5.6    -      -       +      -
    252E  ALA*     3.9    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 200 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    198E  ASP*     3.1    20.0    +      -       -      +
    199E  LEU*     1.3    78.8    -      -       -      +
    201E  ARG*     1.3    63.2    +      -       -      +
    203E  GLN*     3.1    10.7    +      -       -      +
    204E  TYR*     3.0    21.3    +      -       -      +
    244E  TYR*     4.8     0.2    +      -       -      -
      6H  PRO*     4.2    22.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 201 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154E  ILE*     3.4    19.8    -      -       +      +
    155E  SER      3.3    24.2    +      -       -      -
    156E  GLU*     4.6     0.4    +      -       -      -
    159E  PRO*     4.8     1.6    -      -       -      +
    197E  HIS*     3.7    21.7    -      -       +      +
    198E  ASP*     3.2    19.8    +      -       -      +
    200E  LYS*     1.3    78.4    -      -       -      +
    202E  CYS*     1.3    65.0    +      -       -      +
    204E  TYR*     3.1     7.7    +      -       -      +
    205E  VAL*     2.9    35.2    +      -       +      +
    157G  ARG*     3.4    15.2    -      -       -      +
      3H  HIS*     2.8    48.1    +      -       -      +
      4H  SER*     3.3    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 202 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154E  ILE*     4.1    18.2    -      -       -      -
    191E  ILE*     5.2     4.0    -      -       -      -
    192E  LEU      6.1     0.2    -      -       -      -
    197E  HIS*     4.0    12.5    -      -       +      +
    198E  ASP      3.3     3.2    +      -       -      +
    199E  LEU      3.1     7.9    +      -       -      +
    201E  ARG*     1.3    79.0    -      -       -      +
    203E  GLN*     1.3    58.6    +      -       -      +
    205E  VAL*     4.0     0.7    -      -       -      +
    206E  THR*     2.8    41.5    +      -       -      -
    232E  ASN*     4.2     7.0    -      -       -      -
    233E  MET      4.4     0.9    -      -       -      -
    234E  VAL*     3.5    10.5    -      -       -      -
    235E  THR*     3.2    44.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 203 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199E  LEU      3.0    11.6    +      -       -      +
    200E  LYS*     3.4    12.8    -      -       -      +
    202E  CYS*     1.3    78.4    -      -       -      +
    204E  TYR*     1.3    56.6    +      -       -      +
    206E  THR*     3.2     3.1    +      -       -      -
    207E  GLU*     2.6    59.3    +      -       -      +
    234E  VAL*     3.8    15.4    -      -       +      +
    252E  ALA*     3.4    36.9    +      -       -      +
    255E  THR*     3.7    14.6    -      -       -      +
    256E  ALA*     3.9     6.5    -      -       +      +
    259E  ARG*     3.2    16.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 204 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200E  LYS      3.0    11.7    +      -       -      +
    201E  ARG*     3.3     9.9    -      -       -      +
    203E  GLN*     1.3    75.1    -      -       -      +
    205E  VAL*     1.3    68.1    -      -       +      +
    207E  GLU*     3.1    13.8    +      -       -      +
    208E  LYS*     3.0    54.0    +      -       +      +
    118G  GLY      4.9     1.4    +      -       -      -
      3H  HIS*     2.9    48.2    +      +       +      +
      4H  SER*     3.2    32.7    -      -       -      -
      5H  TYR      5.0     0.9    -      -       -      -
    221H  HIS*     3.1    31.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with VAL 205 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154E  ILE*     3.9    26.2    -      -       +      -
    159E  PRO*     3.6    31.2    -      -       +      -
    164E  ILE*     6.0     0.2    -      -       +      -
    191E  ILE*     3.7    16.2    -      -       +      -
    201E  ARG*     2.9    29.0    +      -       +      +
    202E  CYS      4.0     0.2    -      -       -      +
    204E  TYR*     1.3    78.6    -      -       +      +
    206E  THR*     1.3    64.0    +      -       -      +
    208E  LYS*     3.2     6.1    +      -       +      +
    209E  VAL*     2.9    25.7    +      -       +      +
      3H  HIS*     3.9    23.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 206 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191E  ILE*     3.4    16.8    -      -       +      +
    202E  CYS*     2.8    27.5    +      -       -      -
    203E  GLN*     3.5     6.3    -      -       -      -
    205E  VAL*     1.3    76.8    -      -       -      +
    207E  GLU*     1.3    63.3    +      -       -      +
    209E  VAL*     3.8     0.3    -      -       -      +
    210E  LEU*     2.9    46.1    +      -       +      +
    231E  PRO*     5.8     2.0    -      -       +      -
    232E  ASN*     3.3    28.7    +      -       -      +
    234E  VAL*     4.4     8.6    -      -       +      +
    256E  ALA*     4.1    16.2    -      -       +      -
    257E  LEU*     5.9     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 207 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203E  GLN*     2.6    52.3    +      -       -      +
    204E  TYR*     3.1    12.2    +      -       -      +
    206E  THR*     1.3    78.0    -      -       -      +
    208E  LYS*     1.3    61.6    +      -       +      +
    210E  LEU*     4.8     0.2    -      -       -      -
    211E  ALA*     2.9    30.2    +      -       -      +
    256E  ALA*     3.7    23.8    -      -       -      +
    259E  ARG*     3.0    31.7    +      -       -      +
    260E  THR*     3.4    16.9    -      -       +      +
    218H  SER*     5.6     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 208 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164E  ILE*     4.7    13.5    -      -       +      +
    204E  TYR*     3.0    60.7    +      -       +      +
    205E  VAL*     3.7     7.4    -      -       +      +
    207E  GLU*     1.3    76.3    -      -       +      +
    209E  VAL*     1.3    66.6    +      -       -      +
    211E  ALA*     3.4     5.8    +      -       -      +
    212E  ALA*     3.1    22.7    +      -       -      +
      3H  HIS*     6.5     0.4    -      -       +      -
    218H  SER*     2.7    39.7    +      -       -      +
    219H  ASP*     5.9     1.1    -      -       -      -
    221H  HIS*     3.0    24.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 209 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152E  LEU*     3.3    37.9    -      -       +      -
    159E  PRO*     4.8     0.4    -      -       +      -
    164E  ILE*     4.4    20.3    -      -       +      +
    189E  PRO*     4.2    14.1    -      -       +      -
    191E  ILE*     3.6    20.0    -      -       +      -
    205E  VAL*     2.9    28.5    +      -       +      +
    206E  THR      3.8     3.1    -      -       -      +
    208E  LYS*     1.3    76.1    -      -       -      +
    210E  LEU*     1.3    67.7    +      -       +      +
    212E  ALA*     3.0     5.4    +      -       -      +
    213E  VAL*     2.9    36.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 210 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189E  PRO*     4.0    17.7    -      -       +      -
    206E  THR*     2.9    39.6    +      -       +      +
    207E  GLU      4.0     0.4    -      -       -      +
    209E  VAL*     1.3    76.8    -      -       +      +
    211E  ALA*     1.3    65.5    +      -       -      +
    213E  VAL*     2.9    16.0    +      -       +      +
    214E  TYR*     2.9    23.5    +      -       +      -
    229E  LEU*     3.9    33.2    -      -       +      -
    231E  PRO*     4.7     7.0    -      -       +      -
    256E  ALA      5.0     1.1    -      -       -      +
    257E  LEU*     3.8    26.2    -      -       +      -
    260E  THR*     3.5    28.5    -      -       -      +
    261E  VAL*     4.5     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 211 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207E  GLU      2.9    19.5    +      -       -      +
    208E  LYS      3.6     5.2    -      -       -      +
    209E  VAL      3.3     0.2    -      -       -      -
    210E  LEU*     1.3    77.6    -      -       -      +
    212E  ALA*     1.3    61.5    +      -       -      +
    214E  TYR*     3.8     4.2    +      -       -      +
    215E  LYS*     3.3    20.8    +      -       -      +
    260E  THR*     4.1    14.9    -      -       +      +
    215H  LYS*     3.9     9.4    -      -       +      +
    218H  SER*     3.4    33.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 212 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164E  ILE*     3.5    29.8    -      -       +      +
    165E  LEU*     6.1     0.4    -      -       -      -
    168E  ALA*     4.1     9.4    -      -       +      +
    208E  LYS      3.1     8.0    +      -       -      +
    209E  VAL      3.0     8.6    +      -       -      +
    211E  ALA*     1.3    74.3    -      -       -      +
    213E  VAL*     1.3    67.1    +      -       -      +
    215E  LYS*     3.2     3.3    +      -       -      +
    216E  ALA*     3.0    23.9    +      -       -      +
    215H  LYS*     4.0    19.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 213 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168E  ALA*     4.0    16.3    -      -       +      +
    171E  LEU*     4.2    12.8    -      -       +      -
    187E  VAL*     3.9    27.8    -      -       +      -
    189E  PRO*     4.1    18.4    -      -       +      -
    209E  VAL*     2.9    34.7    +      -       +      +
    210E  LEU*     2.9    11.6    +      -       +      +
    212E  ALA*     1.3    77.5    -      -       -      +
    214E  TYR*     1.3    65.3    +      -       +      +
    216E  ALA*     3.3     3.8    +      -       -      +
    217E  LEU*     3.0    35.7    +      -       +      +
    229E  LEU*     5.3     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 214 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187E  VAL*     5.7     1.4    -      -       +      +
    210E  LEU*     2.9    25.6    +      -       +      +
    211E  ALA*     4.5     2.9    -      -       -      +
    213E  VAL*     1.3    78.5    -      -       +      +
    215E  LYS*     1.3    65.3    +      -       -      +
    217E  LEU*     3.2    16.5    +      -       +      +
    218E  SER*     2.9    23.2    +      -       -      -
    224E  LEU*     3.6    35.7    -      -       +      +
    227E  THR*     5.1     2.6    +      -       -      -
    228E  LEU      5.2     0.5    -      -       -      -
    229E  LEU*     3.4    41.1    +      -       +      +
    260E  THR      3.9    17.0    -      -       -      +
    261E  VAL*     3.7    21.3    -      -       +      +
    262E  PRO*     3.7    20.2    -      -       +      -
    265E  VAL*     3.5    26.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 215 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    211E  ALA      3.3    16.8    +      -       -      +
    212E  ALA      3.2     5.5    +      -       -      +
    214E  TYR*     1.3    78.7    -      -       -      +
    216E  ALA*     1.3    58.6    +      -       -      +
    218E  SER*     3.2     5.4    +      -       -      -
    219E  ASP*     2.9    69.1    +      -       -      +
    211H  ALA*     3.7    23.8    -      -       +      +
    212H  ALA*     3.9    27.1    -      -       -      +
    215H  LYS*     3.7    33.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 216 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    168E  ALA*     3.4    35.2    -      -       +      +
    169E  ASN*     4.3     4.5    -      -       -      +
    172E  ALA*     3.8     6.5    -      -       +      -
    212E  ALA      3.0    12.7    +      -       -      +
    213E  VAL      3.4     7.9    -      -       -      +
    215E  LYS*     1.3    74.7    -      -       -      +
    217E  LEU*     1.3    68.3    +      -       -      +
    219E  ASP*     2.9    10.6    +      -       -      +
    220E  HIS*     2.9    28.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 217 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171E  LEU      4.7     0.2    -      -       -      -
    172E  ALA*     3.7    22.0    -      -       +      +
    175E  ALA*     3.9     8.7    -      -       +      -
    187E  VAL*     4.4    18.6    -      -       +      -
    213E  VAL*     3.0    27.9    +      -       +      +
    214E  TYR*     3.2    38.6    +      -       +      +
    216E  ALA*     1.3    75.5    -      -       -      +
    218E  SER*     1.3    63.5    +      -       -      +
    220E  HIS      3.2     1.4    +      -       -      -
    221E  HIS      3.1     3.6    +      -       -      -
    222E  VAL*     2.9    60.9    +      -       +      +
    224E  LEU*     4.0    15.0    -      -       +      -
    227E  THR*     5.5     2.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 218 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214E  TYR      2.9    12.6    +      -       -      -
    215E  LYS*     3.3    11.9    -      -       -      -
    217E  LEU*     1.3    76.0    -      -       -      +
    219E  ASP*     1.3    63.1    +      -       -      +
    221E  HIS*     2.9    18.1    +      -       -      +
    222E  VAL      5.0     2.9    -      -       -      +
    207H  GLU      5.1     0.2    +      -       -      -
    208H  LYS*     3.0    31.3    +      -       -      +
    211H  ALA*     3.4    30.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 219 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215E  LYS*     2.9    51.8    +      -       -      +
    216E  ALA*     2.9    11.2    +      -       -      +
    218E  SER*     1.3    78.1    +      -       -      +
    220E  HIS*     1.3    67.2    +      -       +      +
    221E  HIS*     3.4    12.1    +      -       -      -
    162F  LEU*     3.4    23.8    -      -       +      +
    165F  LEU*     3.9    25.1    -      -       +      +
    208H  LYS*     4.9     2.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 220 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169E  ASN*     2.8    29.6    +      -       -      -
    172E  ALA*     3.4    29.7    -      -       +      +
    173E  ARG*     3.8    34.3    +      -       +      +
    176E  SER*     3.7    19.2    +      -       -      -
    216E  ALA*     2.9    21.8    +      -       -      +
    217E  LEU      3.9     2.7    -      -       -      +
    218E  SER      3.1     0.4    -      -       -      -
    219E  ASP*     1.3    79.1    -      -       +      +
    221E  HIS*     1.3    75.5    +      -       -      +
    222E  VAL*     3.3     3.0    +      -       +      -
    116F  LEU*     5.5     3.9    -      -       +      +
    117F  ALA*     3.9     4.3    -      -       -      +
    162F  LEU*     3.7    29.4    -      -       +      +
    165F  LEU*     4.3     2.8    -      -       +      +
    166F  GLU*     4.0    11.9    -      -       +      -
----------------------------------------------------------
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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