Contacts of the helix formed by residues 188 - 215 (chain D) in PDB entry 4WYV


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 188 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138D  GLU*     4.1    30.3    -      -       +      +
    186D  LEU*     4.9     0.4    -      -       -      +
    187D  LYS*     1.3    80.8    +      -       -      +
    189D  ASP*     1.3    75.6    +      -       -      +
    190D  SER*     2.7    27.1    +      -       -      -
    191D  LEU*     3.3    21.0    +      -       +      +
    192D  ARG*     3.1    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 189 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187D  LYS      3.1    13.3    -      -       -      +
    188D  ASN*     1.3    75.2    +      -       -      +
    190D  SER*     1.3    58.3    -      -       -      +
    191D  LEU      3.2     0.4    -      -       -      -
    192D  ARG*     3.4    14.1    +      -       -      +
    193D  LYS*     2.9    31.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 190 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188D  ASN*     2.7    18.9    +      -       -      -
    189D  ASP*     1.3    72.5    -      -       -      +
    191D  LEU*     1.3    55.6    +      -       -      -
    193D  LYS*     3.5     8.1    -      -       -      +
    194D  ARG*     3.2    30.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 191 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138D  GLU*     4.0    31.0    -      -       +      +
    141D  LEU*     3.9    27.4    -      -       +      -
    142D  SER*     3.6    26.2    -      -       -      +
    145D  LEU*     4.2    13.4    -      -       +      +
    181D  PHE*     5.4     0.9    -      -       +      -
    186D  LEU*     3.8    31.0    -      -       +      -
    188D  ASN*     3.3    22.1    +      -       +      +
    189D  ASP      3.2     0.4    -      -       -      -
    190D  SER*     1.3    76.7    -      -       -      +
    192D  ARG*     1.3    61.1    +      -       -      +
    193D  LYS      3.2     1.3    -      -       -      -
    194D  ARG*     3.3     4.2    +      -       +      +
    195D  TYR*     2.8    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 192 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186D  LEU*     3.0    38.3    +      -       +      +
    187D  LYS*     3.0    38.6    +      -       -      +
    188D  ASN      3.1    11.7    +      -       -      +
    189D  ASP*     3.4    16.5    +      -       -      +
    191D  LEU*     1.3    73.6    -      -       -      +
    193D  LYS*     1.3    63.8    +      -       -      +
    195D  TYR*     3.5    11.2    +      -       +      +
    196D  ASP*     2.8    39.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 193 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189D  ASP      2.9    20.3    +      -       -      +
    190D  SER*     3.5    10.1    -      -       -      +
    192D  ARG*     1.3    76.7    -      -       -      +
    194D  ARG*     1.3    58.8    +      -       -      +
    196D  ASP*     3.1    35.3    +      -       -      +
    197D  GLY      3.7     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 194 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96D  GLN*     3.1    28.8    +      -       -      +
    142D  SER*     4.1    17.0    +      -       -      +
    145D  LEU*     3.9    36.3    -      -       +      +
    146D  ILE*     3.9    23.8    -      -       -      +
    190D  SER*     3.2    17.2    +      -       -      +
    191D  LEU*     3.3     5.5    +      -       -      +
    193D  LYS*     1.3    75.6    -      -       +      +
    195D  TYR*     1.3    64.8    +      -       -      +
    196D  ASP      3.1     1.6    -      -       -      -
    197D  GLY*     3.1    15.7    +      -       -      +
    198D  LEU      3.7     2.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 195 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  LEU*     3.9    11.6    -      -       +      +
    178D  ASP*     3.4    16.2    +      -       -      -
    181D  PHE*     3.2    42.4    -      +       +      -
    182D  ARG*     3.7    34.3    +      -       -      -
    186D  LEU*     3.8    21.5    -      -       +      -
    191D  LEU      2.8    18.0    +      -       -      +
    192D  ARG*     3.7     9.4    -      -       +      +
    193D  LYS      3.3     0.2    -      -       -      -
    194D  ARG*     1.3    73.4    -      -       -      +
    196D  ASP*     1.3    75.5    +      -       -      +
    197D  GLY      3.0     0.7    -      -       -      -
    198D  LEU*     3.2    30.6    +      -       +      +
    199D  LYS*     4.1     3.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 196 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192D  ARG*     2.8    29.9    +      -       -      +
    193D  LYS*     3.1    21.4    +      -       -      +
    195D  TYR*     1.3    87.2    -      -       -      +
    197D  GLY*     1.3    56.8    +      -       -      +
    199D  LYS*     3.1    50.5    +      -       -      +
    200D  TYR*     4.2     2.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 197 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149D  SER*     5.8     0.2    -      -       -      -
    193D  LYS      3.7     3.0    +      -       -      -
    194D  ARG*     3.1    12.4    +      -       -      -
    195D  TYR      3.0     1.2    -      -       -      -
    196D  ASP*     1.3    78.4    -      -       -      +
    198D  LEU*     1.3    61.4    +      -       -      +
    199D  LYS      3.3     0.2    -      -       -      -
    200D  TYR*     3.1    25.3    +      -       -      +
    201D  ASP*     3.5    16.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 198 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  LEU*     3.8    16.1    -      -       +      +
    148D  ALA*     3.5    32.3    -      -       +      -
    174D  ILE*     4.4    16.6    -      -       +      +
    177D  LEU*     4.4     5.2    -      -       +      -
    178D  ASP*     3.8    32.3    -      -       -      +
    181D  PHE*     3.9    22.9    -      -       +      -
    194D  ARG      3.7     3.6    +      -       -      -
    195D  TYR*     3.2    24.3    +      -       +      +
    197D  GLY*     1.3    73.8    -      -       -      +
    199D  LYS*     1.3    60.8    +      -       -      +
    201D  ASP*     3.1     9.3    +      -       +      +
    202D  VAL*     2.8    30.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 199 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178D  ASP*     5.8     2.7    +      -       -      -
    182D  ARG*     6.2     2.0    -      -       -      +
    195D  TYR*     4.1     3.5    +      -       -      +
    196D  ASP*     3.1    44.5    +      -       -      +
    198D  LEU*     1.3    79.0    -      -       -      +
    200D  TYR*     1.3    90.5    +      -       +      +
    202D  VAL*     3.2    10.2    +      -       -      +
    203D  LYS*     2.9    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 200 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    196D  ASP      4.2     9.9    -      -       -      -
    197D  GLY*     3.1    14.3    +      -       -      +
    199D  LYS*     1.3   107.1    +      -       +      +
    201D  ASP*     1.3    60.7    +      -       -      +
    203D  LYS*     3.5    20.0    +      -       +      +
    204D  LYS*     2.9    29.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 201 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  LEU      4.5     0.5    -      -       -      +
    148D  ALA*     3.9     9.4    -      -       -      +
    149D  SER*     2.8    41.2    +      -       -      -
    152D  SER*     3.3    25.3    +      -       -      -
    174D  ILE*     4.4     7.4    -      -       +      -
    197D  GLY      3.5    14.3    +      -       -      +
    198D  LEU*     3.1    16.2    +      -       +      +
    200D  TYR*     1.3    75.6    -      -       -      +
    202D  VAL*     1.3    66.5    +      -       -      +
    204D  LYS*     3.3     2.0    +      -       -      +
    205D  VAL*     3.1    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 202 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174D  ILE*     3.4    27.1    -      -       +      +
    175D  ASN*     3.7    22.7    -      -       -      +
    178D  ASP*     3.9    32.8    -      -       +      +
    198D  LEU*     2.8    20.9    +      -       +      +
    199D  LYS*     3.5    10.3    -      -       -      +
    201D  ASP*     1.3    76.7    -      -       -      +
    203D  LYS*     1.3    62.3    +      -       -      +
    205D  VAL*     3.4     2.3    +      -       -      +
    206D  GLU*     3.1    36.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 203 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156C  VAL*     6.4     2.5    -      -       -      -
    159C  VAL*     6.0     4.0    -      -       -      -
    160C  THR*     5.4    12.3    -      -       +      -
    199D  LYS      2.9    17.1    +      -       -      +
    200D  TYR*     3.6    23.1    -      -       +      +
    202D  VAL*     1.3    79.2    -      -       -      +
    204D  LYS*     1.3    62.7    +      -       -      +
    206D  GLU*     3.4     7.9    +      -       -      +
    207D  GLU*     3.1    55.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 204 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203A  LYS*     4.4     5.3    -      -       -      +
    207A  GLU*     2.6    39.3    +      -       -      +
    210A  TYR*     5.6     8.1    -      -       -      -
    152D  SER*     4.8    12.8    -      -       -      +
    156D  VAL*     4.2    28.0    -      -       +      +
    200D  TYR      2.9    18.6    +      -       -      +
    201D  ASP*     3.3     6.9    +      -       -      +
    203D  LYS*     1.3    75.4    -      -       -      +
    205D  VAL*     1.3    62.1    +      -       -      +
    207D  GLU*     3.3    13.4    +      -       +      +
    208D  VAL*     3.1    26.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 205 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152D  SER*     3.6    31.2    -      -       -      +
    155D  SER*     4.2    13.2    -      -       -      +
    167D  PRO      4.1     5.8    -      -       -      +
    170D  ILE*     4.1     4.7    -      -       +      +
    171D  SER*     3.3    41.1    -      -       -      +
    174D  ILE*     4.1    13.7    -      -       +      -
    201D  ASP      3.1    17.5    +      -       -      +
    202D  VAL*     3.9     4.0    -      -       -      +
    204D  LYS*     1.3    76.3    -      -       -      +
    206D  GLU*     1.3    64.2    +      -       -      +
    208D  VAL*     3.2     8.9    +      -       -      +
    209D  VAL*     3.1    20.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 206 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171D  SER*     3.9    17.7    -      -       -      +
    175D  ASN*     3.3    27.2    +      -       -      +
    202D  VAL*     3.1    29.1    +      -       -      +
    203D  LYS*     3.9     7.1    -      -       -      +
    205D  VAL*     1.3    76.9    -      -       -      +
    207D  GLU*     1.3    59.0    +      -       +      +
    209D  VAL*     3.2     6.8    +      -       -      +
    210D  TYR*     3.0    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 207 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215C  ARG*     6.3     1.3    -      -       -      +
    203D  LYS*     3.1    54.5    +      -       +      +
    204D  LYS*     3.7    13.9    -      -       +      +
    205D  VAL      3.1     0.2    -      -       -      -
    206D  GLU*     1.3    76.9    -      -       +      +
    208D  VAL*     1.3    64.8    +      -       -      +
    210D  TYR*     3.3    12.6    +      -       +      +
    211D  ASP*     3.0    31.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 208 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  TYR*     3.5    21.9    +      -       +      +
    155D  SER*     3.7    25.6    -      -       -      +
    156D  VAL*     4.2    22.2    -      -       +      -
    159D  VAL*     4.0    20.2    -      -       +      -
    167D  PRO*     3.7    19.3    -      -       +      -
    204D  LYS*     3.1    24.6    +      -       +      +
    205D  VAL*     3.2     8.5    +      -       -      +
    207D  GLU*     1.3    74.9    -      -       -      +
    209D  VAL*     1.3    64.3    +      -       -      +
    211D  ASP*     3.2     4.7    +      -       -      +
    212D  LEU*     3.1    21.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 209 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167D  PRO*     3.6    33.7    -      -       +      +
    168D  LEU*     4.1    24.0    -      -       +      -
    171D  SER*     3.8    14.6    -      -       -      +
    205D  VAL      3.1    12.7    +      -       -      +
    206D  GLU*     3.2     9.4    +      -       -      +
    207D  GLU      3.2     0.2    -      -       -      -
    208D  VAL*     1.3    78.5    -      -       -      +
    210D  TYR*     1.3    57.6    +      -       -      +
    212D  LEU*     3.2     9.1    +      -       -      +
    213D  SER*     3.0    28.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 210 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    215C  ARG*     3.7    42.7    +      -       +      +
    216C  GLY*     5.7     4.9    -      -       -      -
    206D  GLU      3.0    12.5    +      -       -      +
    207D  GLU*     3.5    16.2    -      -       +      +
    209D  VAL*     1.3    73.5    -      -       -      +
    211D  ASP*     1.3    82.3    +      -       -      +
    212D  LEU      3.0     1.8    -      -       -      -
    213D  SER*     2.8    26.5    +      -       -      -
    214D  ILE*     3.0    41.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 211 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  TYR*     2.6    38.2    +      -       -      +
    214A  ILE*     3.4    18.6    -      -       +      +
    207D  GLU*     3.0    18.3    +      -       -      +
    208D  VAL      3.2     2.7    +      -       -      +
    210D  TYR*     1.3    93.2    -      -       -      +
    212D  LEU*     1.3    61.4    +      -       -      +
    214D  ILE*     3.7     8.8    +      -       -      +
    215D  ARG*     3.2    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 212 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214A  ILE*     3.9    16.2    -      -       +      -
    159D  VAL*     3.9    20.2    -      -       +      -
    164D  TYR*     3.5    44.9    -      -       +      +
    167D  PRO*     4.0    16.6    -      -       +      -
    168D  LEU*     5.3     7.4    -      -       +      -
    208D  VAL      3.1    14.3    +      -       -      +
    209D  VAL*     3.5    12.1    -      -       +      +
    210D  TYR      3.0     1.0    -      -       -      -
    211D  ASP*     1.3    78.5    -      -       -      +
    213D  SER*     1.3    62.3    +      -       -      +
    215D  ARG*     3.2    46.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 213 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209D  VAL*     3.0    14.3    +      -       -      -
    210D  TYR*     2.8    29.2    +      -       -      -
    212D  LEU*     1.3    76.5    -      -       -      +
    214D  ILE*     1.3    63.1    +      -       -      +
    215D  ARG      3.5     6.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 214 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216C  GLY*     5.9     7.0    -      -       -      +
    210D  TYR*     3.0    57.8    +      -       +      +
    211D  ASP*     3.9     8.3    -      -       -      +
    213D  SER*     1.3    84.0    +      -       -      +
    215D  ARG*     1.3    66.2    +      -       +      +
    216D  GLY      3.9     4.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 215 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214A  ILE*     4.0    31.1    -      -       +      +
    164D  TYR*     3.0    54.2    -      -       -      +
    211D  ASP      3.2    11.9    +      -       -      +
    212D  LEU*     3.2    33.7    +      -       -      +
    213D  SER      3.6     8.3    -      -       -      +
    214D  ILE*     1.3    85.3    -      -       +      +
    216D  GLY*     1.3    64.5    +      -       -      +
----------------------------------------------------------
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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