Contacts of the helix formed by residues 232 - 255 (chain D) in PDB entry 5Y1Z


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 HIS 232 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228D  ASN*     3.5    40.4    +      -       +      +
    229D  GLY      3.5     3.2    +      -       -      -
    230D  GLY      3.6     0.4    -      -       -      -
    231D  ASN*     1.3    81.3    -      -       -      +
    233D  LYS*     1.3    73.4    +      -       +      +
    234D  LEU*     3.1    48.4    +      -       +      +
    235D  THR*     2.9    25.2    +      -       -      +
    236D  GLN*     3.1    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 233 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91B  PRO*     5.3     3.6    -      -       -      +
     92B  ASP*     3.5    41.7    +      -       +      +
     93B  ALA*     5.2     0.5    -      -       -      +
    231D  ASN      3.6     2.2    +      -       -      -
    232D  HIS*     1.3    79.7    +      -       +      +
    234D  LEU*     1.3    63.2    +      -       +      +
    236D  GLN*     3.2    19.1    +      -       -      +
    237D  ILE*     3.1    25.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 234 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172D  ALA*     3.5    32.3    -      -       +      -
    173D  PHE*     3.1    18.7    -      -       +      -
    224D  CYS*     3.5    14.4    -      -       -      -
    228D  ASN*     3.9    17.7    -      -       -      +
    232D  HIS*     3.1    27.9    +      -       +      +
    233D  LYS*     1.3    75.4    -      -       +      +
    235D  THR*     1.3    63.8    +      -       -      +
    237D  ILE*     3.1     7.4    +      -       +      +
    238D  ALA      2.9    18.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 235 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221D  LEU*     4.1     4.9    -      -       +      -
    224D  CYS*     3.3    22.1    +      -       -      -
    225D  ILE*     3.5    27.6    -      -       +      +
    229D  GLY      2.7    21.4    +      -       -      -
    230D  GLY      3.4    21.3    -      -       -      +
    232D  HIS*     2.9    15.6    +      -       -      +
    234D  LEU*     1.3    76.9    -      -       -      +
    236D  GLN*     1.3    57.9    +      -       -      +
    238D  ALA*     3.1     3.6    +      -       -      +
    239D  LYS*     2.9    38.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 236 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91B  PRO*     5.8     4.9    -      -       -      +
     93B  ALA*     3.7    24.7    -      -       +      +
    231D  ASN*     3.4    35.3    +      -       -      +
    232D  HIS      3.1     9.2    +      -       -      +
    233D  LYS*     3.4    20.0    -      -       -      +
    234D  LEU      3.2     0.2    -      -       -      -
    235D  THR*     1.3    72.8    -      -       -      +
    237D  ILE*     1.3    65.0    +      -       -      +
    239D  LYS*     3.3    22.3    +      -       -      +
    240D  VAL*     3.2    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 237 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  ASP*     4.0     8.3    -      -       +      +
     93B  ALA*     3.5    31.4    -      -       +      +
     96B  CYS*     3.7    17.7    -      -       +      -
    169D  GLY*     3.5    26.0    -      -       -      +
    170D  THR*     3.8    20.6    -      -       +      -
    173D  PHE*     3.7    18.6    -      -       +      -
    233D  LYS      3.1    14.1    +      -       -      +
    234D  LEU*     3.1    12.8    +      -       +      +
    236D  GLN*     1.3    75.9    -      -       -      +
    238D  ALA*     1.3    63.3    +      -       -      +
    240D  VAL*     3.0     7.2    +      -       +      +
    241D  VAL*     2.9    19.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 238 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173D  PHE*     3.8    20.1    -      -       +      -
    220D  ILE*     4.5     5.6    -      -       +      -
    221D  LEU*     3.9    29.6    -      -       +      +
    224D  CYS*     4.2     7.0    -      -       +      -
    234D  LEU      2.9    12.5    +      -       -      +
    235D  THR      3.1     9.6    +      -       -      +
    237D  ILE*     1.3    75.6    -      -       -      +
    239D  LYS*     1.3    62.7    +      -       -      +
    241D  VAL*     3.3     6.9    +      -       -      +
    242D  ILE*     3.0    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 239 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221D  LEU*     3.9    24.9    -      -       +      -
    225D  ILE*     6.0     1.3    -      -       -      -
    230D  GLY      4.1    11.4    +      -       -      -
    231D  ASN*     5.2     4.0    +      -       -      -
    235D  THR*     2.9    34.4    +      -       -      +
    236D  GLN*     3.6    23.0    -      -       -      +
    238D  ALA*     1.3    74.1    -      -       -      +
    240D  VAL*     1.3    66.1    +      -       +      +
    242D  ILE*     3.4     2.1    +      -       -      +
    243D  LYS*     3.0    32.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 240 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     -1B  GLY      4.8     9.0    -      -       -      +
     93B  ALA*     3.6    24.7    -      -       +      +
     96B  CYS*     4.1    12.3    -      -       +      -
     97B  ALA*     3.7    35.4    -      -       +      +
    236D  GLN      3.2    14.2    +      -       -      +
    237D  ILE*     3.0    10.8    +      -       -      +
    239D  LYS*     1.3    76.6    -      -       +      +
    241D  VAL*     1.3    64.2    +      -       -      +
    243D  LYS*     3.1     8.4    +      -       +      +
    244D  ILE*     2.9    39.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 241 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165D  MET*     4.0    28.9    -      -       +      +
    170D  THR*     3.6    32.1    -      -       +      -
    173D  PHE*     4.9     7.4    -      -       +      -
    195D  LEU*     4.2    20.9    -      -       +      -
    217D  ALA*     6.2     0.4    -      -       +      -
    220D  ILE*     5.2     5.8    -      -       +      -
    237D  ILE*     2.9    19.2    +      -       +      +
    238D  ALA*     3.6    10.8    -      -       -      +
    240D  VAL*     1.3    78.5    -      -       +      +
    242D  ILE*     1.3    69.2    +      -       +      +
    244D  ILE*     3.4     9.2    +      -       +      +
    245D  CYS*     3.0    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 242 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214D  LEU*     4.6     3.8    -      -       +      -
    217D  ALA*     3.7    27.8    -      -       +      +
    218D  LYS*     4.0    34.3    -      -       +      -
    220D  ILE*     4.5     8.1    -      -       +      -
    221D  LEU*     4.2    25.6    -      -       +      -
    238D  ALA      3.0    22.0    +      -       -      +
    239D  LYS      4.1     3.1    -      -       -      +
    241D  VAL*     1.3    85.7    -      -       +      +
    243D  LYS*     1.3    68.4    +      -       +      +
    245D  CYS*     3.1     6.1    +      -       +      +
    246D  GLU*     2.9    40.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 243 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     -1B  GLY      5.0     9.2    -      -       -      +
      0B  SER*     4.2    12.8    -      -       -      +
      1B  MET*     3.7    39.5    -      -       +      +
    239D  LYS*     3.0    23.7    +      -       +      +
    240D  VAL*     3.1     7.2    +      -       -      +
    242D  ILE*     1.3    79.5    -      -       +      +
    244D  ILE*     1.3    63.2    +      -       +      +
    246D  GLU*     3.1    15.3    +      -       -      +
    247D  HIS*     3.0    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 244 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96B  CYS*     5.0     0.7    -      -       -      +
    100B  SER*     3.9    21.1    -      -       -      +
    164D  LYS*     3.6    35.2    -      -       +      +
    165D  MET*     4.0    13.7    -      -       +      +
    167D  GLN*     3.7    30.3    -      -       +      -
    240D  VAL*     2.9    35.2    +      -       +      +
    241D  VAL*     3.7     7.2    -      -       +      +
    243D  LYS*     1.3    75.5    -      -       +      +
    245D  CYS*     1.3    64.3    +      -       -      +
    247D  HIS*     3.0     8.8    +      -       +      +
    248D  GLU*     2.9    27.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 245 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165D  MET*     3.5    25.8    -      -       -      +
    213D  PHE*     3.8    35.0    -      -       -      -
    214D  LEU*     3.6    25.4    -      -       +      -
    217D  ALA*     4.1     8.5    -      -       +      -
    241D  VAL      3.0    10.2    +      -       -      +
    242D  ILE*     3.1    12.3    +      -       -      +
    244D  ILE*     1.3    77.7    -      -       -      +
    246D  GLU*     1.3    61.4    +      -       -      +
    248D  GLU*     3.3     2.7    +      -       -      +
    249D  MET*     2.9    32.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 246 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1B  MET*     3.7    33.8    -      -       +      +
    214D  LEU*     3.5    30.0    -      -       +      +
    218D  LYS*     4.2    12.3    +      -       -      -
    242D  ILE*     2.9    32.6    +      -       -      +
    243D  LYS*     3.1    13.4    +      -       -      +
    245D  CYS*     1.3    75.3    -      -       -      +
    247D  HIS*     1.3    58.5    +      -       -      +
    249D  MET*     3.3     3.1    +      -       -      +
    250D  ASN*     2.9    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 247 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1B  MET*     3.2    38.5    -      -       -      +
      2B  ALA*     3.6    19.1    +      -       -      -
      3B  GLY*     5.4     0.9    -      -       -      -
    104B  LYS*     5.6    10.0    +      -       +      +
    243D  LYS      3.0     9.8    +      -       -      +
    244D  ILE*     3.0    11.9    +      -       +      +
    246D  GLU*     1.3    77.4    -      -       -      +
    248D  GLU*     1.3    78.7    +      -       -      +
    250D  ASN*     3.3     4.8    +      -       +      +
    251D  GLU*     3.0    56.9    +      -       +      +
    313D  ARG*     5.7     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 248 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161D  ALA*     3.8    20.9    -      -       +      +
    164D  LYS*     3.2    44.1    +      -       +      +
    244D  ILE*     2.9    25.3    +      -       +      +
    245D  CYS*     3.9     3.8    -      -       -      +
    247D  HIS*     1.3    98.1    +      -       -      +
    249D  MET*     1.3    68.8    -      -       +      +
    251D  GLU*     3.1     5.6    +      -       -      +
    252D  ILE*     2.9    27.5    +      -       -      +
    259D  TYR*     2.9    39.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 249 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158D  LEU*     3.9    13.7    -      -       +      -
    161D  ALA*     3.7    22.7    -      -       +      -
    210D  THR*     3.7    40.1    -      -       -      +
    213D  PHE*     3.3    38.6    -      -       +      -
    214D  LEU*     4.2    19.7    -      -       +      -
    245D  CYS*     2.9    25.4    +      -       -      +
    246D  GLU*     3.7     6.1    -      -       -      +
    248D  GLU*     1.3    77.3    -      -       +      +
    250D  ASN*     1.3    63.2    +      -       -      +
    252D  ILE*     3.4     6.8    +      -       +      +
    253D  GLU*     3.0    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 250 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1B  MET*     4.3    18.3    -      -       +      +
    246D  GLU      2.9    17.4    +      -       -      +
    247D  HIS*     3.5     7.0    -      -       +      +
    249D  MET*     1.3    77.4    -      -       -      +
    251D  GLU*     1.3    58.4    +      -       +      +
    253D  GLU*     2.9     9.8    +      -       -      +
    254D  VAL*     2.9    33.9    +      -       -      +
    297D  ARG*     4.5     4.3    +      -       -      +
    313D  ARG*     4.2     8.5    -      -       -      +
    504D  SO4      3.3    41.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 251 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247D  HIS*     3.0    49.1    +      -       +      +
    248D  GLU*     3.1     5.4    +      -       -      +
    250D  ASN*     1.3    75.0    +      -       -      +
    252D  ILE*     1.3    64.4    +      -       -      +
    254D  VAL*     3.3    15.3    +      -       -      +
    255D  CYS      3.3    16.1    +      -       -      +
    259D  TYR*     3.5    26.4    -      -       +      +
    306D  ARG*     5.6     7.7    +      -       -      -
    313D  ARG*     3.0    38.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 252 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  ALA*     3.5     7.1    -      -       -      +
    146D  MET*     4.7    10.1    -      -       +      -
    149D  LEU*     4.7     4.3    -      -       +      -
    154D  LEU*     4.7     2.0    -      -       +      -
    157D  LEU*     3.9    36.8    -      -       +      +
    158D  LEU*     4.2    21.3    -      -       +      -
    161D  ALA*     4.9     0.4    -      -       +      -
    210D  THR*     3.9    16.4    -      -       +      -
    248D  GLU      2.9    23.0    +      -       -      +
    249D  MET*     3.6    15.7    -      -       +      +
    251D  GLU*     1.3    76.2    -      -       -      +
    253D  GLU*     1.3    63.5    +      -       -      +
    255D  CYS      4.7     0.2    -      -       -      -
    256D  PRO*     3.4    18.2    -      -       +      -
    259D  TYR*     3.6    36.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 253 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143D  SER*     2.8    32.2    +      -       -      -
    144D  LYS*     6.0     0.5    -      -       -      +
    145D  ALA*     3.4    21.4    +      -       -      +
    146D  MET*     3.4    20.1    -      -       -      +
    210D  THR*     2.8    26.9    +      -       +      +
    211D  GLU*     4.5     7.3    -      -       -      +
    249D  MET*     3.0    17.2    +      -       +      +
    250D  ASN*     2.9    17.4    +      -       -      +
    252D  ILE*     1.3    79.3    -      -       -      +
    254D  VAL*     1.3    62.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 254 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250D  ASN*     2.9    26.6    +      -       -      +
    251D  GLU*     3.3    10.7    +      -       -      +
    253D  GLU*     1.3    79.8    -      -       +      +
    255D  CYS*     1.3    62.7    +      -       +      +
    256D  PRO*     4.9     0.2    -      -       -      +
    278D  HIS*     5.3     0.7    -      -       -      -
    296D  LEU*     4.0    31.9    -      -       +      +
    297D  ARG*     3.3    53.1    -      -       -      +
    304D  ASP*     3.8     9.0    -      -       -      +
    313D  ARG*     3.9    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 255 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148D  MET*     5.7     2.5    -      -       -      -
    251D  GLU      3.3     5.1    +      -       -      +
    252D  ILE      3.7     2.9    -      -       -      -
    253D  GLU      3.4     0.4    -      -       -      -
    254D  VAL*     1.3    85.2    -      -       +      +
    256D  PRO*     1.3    68.8    -      -       -      +
    257D  GLU*     3.7     9.4    -      -       -      -
    258D  CYS*     3.3    19.4    -      -       +      +
    259D  TYR*     3.0    27.2    +      -       -      +
    274D  CYS*     3.8     4.7    -      -       -      -
    278D  HIS*     3.6    13.7    -      -       +      +
    296D  LEU*     4.8     1.6    -      -       +      -
    503D   ZN      2.2    37.7    -      -       -      -
----------------------------------------------------------
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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