Contacts of the helix formed by residues 219 - 240 (chain C) in PDB entry 5M8L


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ALA 219 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213C  PHE      4.6     4.9    -      -       -      +
    214C  SER      4.5     0.4    -      -       -      -
    217C  GLY      3.0     0.6    +      -       -      -
    218C  PRO*     1.3    78.6    -      -       -      +
    220C  PHE*     1.3    63.1    +      -       -      +
    221C  LEU      3.4     0.9    -      -       -      -
    222C  THR*     3.7    10.1    -      -       -      -
    223C  TRP*     3.0    27.3    +      -       +      +
    425C  PHE*     3.8     2.2    -      -       -      -
    433C  GLY      4.0     4.5    -      -       -      +
    434C  HIS*     3.1    34.6    +      -       +      +
    440C  MET*     5.6     0.4    -      -       +      -
    449C  ASN*     3.2    25.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 220 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214C  SER      3.4    15.9    +      -       -      +
    215C  HIS*     4.1     4.3    -      +       -      -
    217C  GLY      3.1     9.4    +      -       -      +
    218C  PRO      3.1     3.2    +      -       -      -
    219C  ALA*     1.3    75.9    -      -       -      +
    221C  LEU*     1.3    92.1    +      -       +      +
    224C  HIS*     2.9    59.9    +      +       +      +
    356C  ARG*     3.9     5.8    -      -       -      -
    360C  GLU*     3.2    53.2    -      -       +      +
    377C  HIS*     3.5    50.3    -      +       +      -
    404C  HIS*     3.9     4.7    -      +       -      -
    407C  THR*     4.0     8.7    -      -       +      -
    434C  HIS*     4.3     0.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 221 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218C  PRO      4.1     1.8    +      -       -      -
    219C  ALA      3.4     0.2    -      -       -      -
    220C  PHE*     1.3   106.7    -      -       +      +
    222C  THR*     1.3    58.2    +      -       -      +
    224C  HIS*     3.9     2.4    -      -       -      +
    225C  ARG*     3.0    28.9    +      -       -      +
    342C  PHE*     3.7    18.4    -      -       +      -
    355C  PHE*     3.7    22.4    -      -       +      -
    356C  ARG*     4.4     6.5    -      -       +      -
    359C  VAL*     4.0    12.8    -      -       +      -
    407C  THR*     3.9    18.8    -      -       +      +
    408C  ASP*     4.4     2.2    -      -       -      +
    411C  PHE*     3.6    50.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 222 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218C  PRO      4.9     0.6    +      -       -      -
    219C  ALA*     3.6     9.4    +      -       -      -
    221C  LEU*     1.3    74.7    -      -       +      +
    223C  TRP*     1.3    64.2    +      -       -      +
    225C  ARG*     3.3     4.3    +      -       -      +
    226C  TYR      3.2    17.5    +      -       -      -
    342C  PHE*     5.9     0.7    -      -       +      -
    411C  PHE*     4.1    16.6    -      -       +      -
    425C  PHE*     4.2     6.8    -      -       +      -
    440C  MET*     3.7     4.5    -      -       -      +
    449C  ASN*     2.7    54.4    +      -       -      +
    452C  MET*     3.7    31.9    -      -       +      +
    453C  PHE*     4.0    12.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 223 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191C  THR*     3.6     9.0    -      -       -      -
    192C  HIS*     3.6    35.9    -      +       -      -
    195C  SER*     3.5    14.5    -      -       -      -
    213C  PHE      4.0     9.6    +      -       -      -
    214C  SER*     3.4    26.1    -      -       -      -
    219C  ALA*     3.0    23.8    +      -       +      +
    220C  PHE      4.0     1.6    -      -       -      +
    222C  THR*     1.3    80.3    +      -       -      +
    224C  HIS*     1.3    73.2    +      +       -      +
    226C  TYR*     3.3     0.7    +      -       -      -
    227C  HIS*     3.0    60.4    +      +       -      -
    440C  MET*     3.7    30.9    -      -       +      -
    441C  VAL      2.7    29.2    +      -       -      -
    443C  PHE*     3.7    19.6    -      +       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 224 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192C  HIS*     3.2     3.6    +      -       -      -
    214C  SER      3.5    11.4    +      -       -      -
    215C  HIS*     3.1    20.4    +      +       -      -
    220C  PHE*     2.9    35.9    +      +       +      +
    221C  LEU*     4.3     2.5    -      -       -      +
    223C  TRP*     1.3    94.5    -      +       -      +
    225C  ARG*     1.3    64.5    +      -       -      +
    227C  HIS*     3.3     6.2    -      -       -      +
    228C  LEU*     3.1    29.9    +      -       +      +
    400C  PHE*     4.0     9.9    -      +       -      -
    404C  HIS*     3.1    36.3    -      +       +      +
    408C  ASP*     6.1     0.2    -      -       -      -
    512C   ZN      2.2    34.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 225 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130C  ARG*     5.5     1.0    +      -       -      -
    221C  LEU      3.0    17.6    +      -       -      +
    222C  THR      3.5     5.4    -      -       -      +
    223C  TRP      3.2     0.4    -      -       -      -
    224C  HIS*     1.3    74.6    -      -       -      +
    226C  TYR*     1.3    65.8    +      -       -      +
    228C  LEU*     3.2     6.3    +      -       -      +
    229C  LEU*     3.0    21.2    +      -       +      +
    408C  ASP*     3.0    34.7    +      -       -      +
    411C  PHE*     3.4    24.4    -      -       -      -
    412C  ASP*     3.0    38.5    +      -       -      +
    415C  LEU*     3.8     2.0    -      -       -      +
    452C  MET*     3.2    32.5    +      -       -      -
    454C  VAL      2.7    28.1    +      -       -      -
    456C  ALA      4.2     0.8    -      -       -      +
    460C  LEU*     3.6    19.2    -      -       +      +
    462C  TYR*     3.2    20.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 226 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222C  THR      3.2     4.8    +      -       -      +
    223C  TRP      3.9     4.5    -      -       -      +
    225C  ARG*     1.3    79.8    -      -       -      +
    227C  HIS*     1.3    56.6    +      -       -      +
    229C  LEU*     3.2    12.5    +      -       +      -
    230C  ARG*     2.9    54.2    +      -       +      +
    440C  MET*     3.8    22.2    -      -       +      -
    443C  PHE*     3.4    44.6    -      +       +      -
    444C  TRP      4.1    16.0    +      -       -      -
    445C  PRO*     4.7     4.7    +      -       -      +
    447C  VAL*     4.0    24.0    -      -       +      +
    452C  MET*     3.9    27.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 227 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188C  PHE*     2.8    76.2    +      +       -      -
    191C  THR*     3.4    18.0    +      -       -      -
    192C  HIS*     3.9    10.7    -      -       +      +
    223C  TRP*     3.0    43.1    +      +       +      +
    224C  HIS*     3.3    13.8    +      -       -      +
    226C  TYR*     1.3    76.7    -      -       -      +
    228C  LEU*     1.3    62.2    +      -       -      +
    230C  ARG*     3.6     4.6    +      -       +      +
    231C  LEU      3.2    16.1    +      -       -      -
    395C  PRO*     4.6     0.4    -      -       +      -
    400C  PHE*     3.7    18.9    -      +       -      -
    443C  PHE*     4.0    12.0    -      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 228 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130C  ARG*     4.4    11.7    -      -       -      +
    188C  PHE*     4.5    12.3    -      -       +      -
    224C  HIS      3.1    15.5    +      -       -      +
    225C  ARG      3.7     4.7    -      -       -      +
    227C  HIS*     1.3    75.2    -      -       +      +
    229C  LEU*     1.3    60.8    +      -       -      +
    231C  LEU*     3.2     4.7    +      -       -      +
    232C  GLU*     2.8    31.3    +      -       -      +
    246C  LEU*     3.7    17.0    -      -       +      +
    400C  PHE*     5.6     0.2    -      -       +      -
    401C  VAL*     3.8    20.2    -      -       +      +
    404C  HIS*     3.4    41.7    -      -       +      +
    405C  THR*     3.5    25.6    -      -       +      +
    408C  ASP*     4.2    11.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 229 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115C  PRO*     4.0    27.4    -      -       +      -
    130C  ARG*     3.9    10.1    -      -       -      +
    225C  ARG*     3.0    15.7    +      -       +      +
    226C  TYR*     3.2    14.1    +      -       +      +
    228C  LEU*     1.3    78.0    -      -       -      +
    230C  ARG*     1.3    57.0    +      -       -      +
    232C  GLU*     3.7     9.6    -      -       -      +
    233C  LYS*     3.0    29.6    +      -       +      +
    452C  MET*     4.3    25.4    -      -       +      -
    460C  LEU*     4.3    14.6    -      -       +      +
    462C  TYR*     3.7    33.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 230 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107C  GLY*     5.9     4.2    -      -       -      -
    108C  HIS      6.0     0.8    -      -       -      +
    156C  HIS*     4.9     1.0    -      -       -      -
    158C  LEU*     5.1     7.1    -      -       -      +
    159C  PHE*     3.8    28.6    -      -       -      -
    187C  TYR*     4.0    24.4    +      -       +      +
    188C  PHE*     6.4     0.4    -      -       +      -
    226C  TYR*     2.9    48.1    +      -       +      +
    227C  HIS*     3.8     6.7    -      -       +      +
    229C  LEU*     1.3    75.0    -      -       -      +
    231C  LEU*     1.3    64.8    +      -       -      +
    233C  LYS*     3.6    20.5    +      -       -      +
    234C  ASP*     2.7    59.1    +      -       -      +
    237C  GLU*     5.9     0.4    +      -       -      -
    443C  PHE*     5.2     6.1    -      -       +      -
    444C  TRP      4.3     7.9    +      -       -      -
    445C  PRO*     5.2     4.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 231 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148C  LEU*     5.0     0.7    -      -       +      -
    151C  ALA*     5.2     0.7    -      -       +      -
    184C  ILE*     4.4    16.8    -      -       +      +
    185C  TYR*     4.3    19.3    -      -       +      -
    188C  PHE*     3.8    37.0    -      -       +      -
    227C  HIS      3.2     4.7    +      -       -      +
    228C  LEU      3.2     7.1    +      -       -      +
    230C  ARG*     1.3    77.1    -      -       -      +
    232C  GLU*     1.3    65.4    +      -       -      +
    234C  ASP*     3.3     5.3    +      -       -      +
    235C  MET*     3.0    51.0    +      -       +      +
    246C  LEU*     4.3    12.8    -      -       +      -
    401C  VAL*     3.8    30.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 232 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128C  ILE*     3.2    24.1    -      -       -      +
    130C  ARG*     2.8    41.1    +      -       -      -
    228C  LEU      2.8    20.2    +      -       -      +
    229C  LEU*     3.7    14.6    -      -       -      +
    230C  ARG      3.3     0.2    -      -       -      -
    231C  LEU*     1.3    73.8    -      -       -      +
    233C  LYS*     1.3    56.6    +      -       -      +
    235C  MET*     3.3     4.7    +      -       -      +
    236C  GLN*     3.0    45.0    +      -       -      +
    244C  PHE*     3.8     7.9    -      -       +      +
    245C  SER*     3.4     5.6    -      -       -      -
    246C  LEU*     3.0    36.3    +      -       +      +
    462C  TYR*     4.5     1.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 233 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  THR*     2.5    41.6    +      -       -      +
    113C  CYS*     4.1    10.7    +      -       -      +
    229C  LEU*     3.0    18.3    +      -       +      +
    230C  ARG*     4.0    24.7    -      -       -      +
    232C  GLU*     1.3    75.0    -      -       -      +
    234C  ASP*     1.3    65.4    +      -       -      +
    236C  GLN*     3.3    22.9    +      -       -      +
    237C  GLU*     3.2    46.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 234 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156C  HIS*     2.9    33.6    +      -       +      -
    157C  PRO*     6.4     0.2    -      -       +      -
    184C  ILE*     3.7    24.9    -      -       +      +
    187C  TYR*     4.4     4.5    -      -       -      -
    230C  ARG*     2.7    56.8    +      -       -      +
    231C  LEU*     3.3     7.3    +      -       -      +
    233C  LYS*     1.3    75.9    -      -       -      +
    235C  MET*     1.3    57.8    +      -       -      +
    237C  GLU*     3.6     7.7    +      -       -      +
    238C  MET*     2.9    28.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 235 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144C  PHE*     5.0     0.7    -      -       +      +
    147C  ALA*     3.6    44.0    -      -       +      +
    148C  LEU*     3.6    23.8    -      -       +      +
    151C  ALA*     4.4     7.9    -      -       +      -
    184C  ILE*     4.8     1.3    -      -       +      -
    231C  LEU*     3.0    46.9    +      -       +      +
    232C  GLU      3.8     0.7    -      -       -      +
    234C  ASP*     1.3    75.7    -      -       -      +
    236C  GLN*     1.3    65.5    +      -       -      +
    238C  MET*     4.0    15.7    -      -       +      -
    239C  LEU*     2.9    33.3    +      -       +      +
    244C  PHE*     3.6    31.2    -      -       +      -
    246C  LEU*     4.1     8.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 236 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128C  ILE*     3.8    12.5    -      -       -      +
    232C  GLU*     3.0    31.4    +      -       -      +
    233C  LYS*     3.3    27.6    +      -       -      +
    235C  MET*     1.3    76.3    -      -       -      +
    237C  GLU*     1.3    59.2    +      -       +      +
    240C  GLN*     2.8    24.3    +      -       -      -
    241C  GLU      3.0    24.7    +      -       -      +
    242C  PRO*     3.5    28.3    +      -       +      +
    244C  PHE*     3.1    31.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 237 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  THR*     4.3     6.2    +      -       -      +
    157C  PRO*     6.1     1.2    -      -       -      +
    230C  ARG*     5.9     0.2    +      -       -      -
    233C  LYS*     3.2    48.1    +      -       +      +
    234C  ASP*     4.1     7.2    -      -       -      +
    236C  GLN*     1.3    79.3    -      -       +      +
    238C  MET*     1.3    66.4    +      -       -      +
    240C  GLN*     3.5    16.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 238 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147C  ALA      3.4    26.2    -      -       -      +
    150C  MET*     3.8    36.5    -      -       +      +
    151C  ALA*     3.6    30.5    -      -       +      +
    154C  THR*     4.2     7.4    -      -       +      +
    184C  ILE*     3.8    21.8    -      -       +      -
    234C  ASP      2.9    19.7    +      -       -      +
    235C  MET*     3.2    13.4    +      -       +      +
    237C  GLU*     1.3    79.5    -      -       -      +
    239C  LEU*     1.3    81.7    +      -       +      +
    240C  GLN*     4.5     3.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 239 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143C  HIS*     4.3     9.4    -      -       +      +
    147C  ALA*     3.8    30.5    -      -       +      -
    150C  MET*     4.4    13.0    -      -       -      -
    235C  MET*     2.9    21.2    +      -       +      +
    236C  GLN      4.2     0.2    -      -       -      +
    238C  MET*     1.3    87.6    -      -       +      +
    240C  GLN*     1.3    69.7    +      -       -      +
    241C  GLU*     3.3    35.2    +      -       +      +
    244C  PHE*     3.7    37.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 240 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236C  GLN      2.8    10.1    +      -       -      -
    237C  GLU*     3.5    14.8    +      -       -      +
    238C  MET      3.3     4.4    -      -       -      +
    239C  LEU*     1.3    80.4    -      -       -      +
    241C  GLU*     1.3    60.4    +      -       -      +
    242C  PRO*     3.6    10.2    -      -       -      +
----------------------------------------------------------
 Back to top of page


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