Contacts of the helix formed by residues 299 - 320 (chain C) in PDB entry 1Y8Q


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 MET 299 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158C  VAL*     4.5     4.0    -      -       -      +
    160C  GLY*     3.7    22.8    +      -       -      +
    161C  TYR*     3.5    47.1    -      -       +      +
    296C  PHE      4.9     3.8    -      -       -      +
    297C  SER*     3.9     3.5    +      -       -      +
    298C  GLU*     1.3    75.7    -      -       -      +
    300C  ALA*     1.3    66.0    +      -       -      +
    301C  PRO*     4.2     7.4    -      -       +      -
    302C  VAL*     2.8    28.7    +      -       +      +
    303C  CYS*     3.0    13.5    +      -       -      -
      7D  LEU*     3.7    36.6    -      -       +      -
     39D  THR*     5.9     0.7    -      -       +      -
    400D  LEU*     4.9     4.9    -      -       +      -
    403D  LEU*     4.5    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 300 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  GLU*     5.3     1.0    -      -       -      +
     78C  ALA      5.9     0.4    -      -       -      +
    298C  GLU      4.0     1.8    +      -       -      -
    299C  MET*     1.3    70.5    -      -       -      +
    301C  PRO*     1.3    72.8    -      -       +      +
    303C  CYS*     3.2    10.9    +      -       -      +
    304C  ALA*     3.0    23.4    +      -       -      +
     35D  ASN*     4.1     9.9    -      -       -      +
     38D  LEU*     3.7    41.9    +      -       +      +
     39D  THR*     4.0     6.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 301 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299C  MET*     3.4    11.4    -      -       +      -
    300C  ALA*     1.3    89.2    -      -       +      +
    302C  VAL*     1.3    56.0    +      -       -      +
    304C  ALA*     3.6     1.4    +      -       +      -
    305C  VAL*     3.2    32.2    +      -       -      +
     35D  ASN*     4.8     3.8    -      -       +      +
     39D  THR*     3.2    31.9    -      -       +      +
    396D  GLY*     3.6    29.1    -      -       -      +
    399D  VAL*     3.5    20.9    -      -       +      -
    400D  LEU*     3.8    22.9    -      -       +      -
    403D  LEU*     5.1     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 302 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158C  VAL*     3.3    22.7    -      -       +      -
    160C  GLY      3.4    20.2    -      -       -      +
    161C  TYR*     3.9    16.4    -      -       -      +
    162C  HIS      3.6    21.5    -      -       -      +
    299C  MET*     2.8    21.8    +      -       +      +
    301C  PRO*     1.3    72.8    -      -       -      +
    303C  CYS*     1.3    63.1    +      -       -      +
    304C  ALA      3.1     1.3    -      -       -      -
    305C  VAL*     3.2     4.1    +      -       -      -
    306C  VAL*     2.8    31.7    +      -       +      +
    331C  PHE*     4.2    16.2    -      -       +      -
    400D  LEU*     4.7    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 303 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46C  GLY*     3.5    43.5    -      -       -      +
     47C  LEU*     3.5     9.7    -      -       -      +
     50C  GLU*     3.7     8.1    -      -       +      +
    158C  VAL*     4.1    24.7    -      -       -      -
    298C  GLU*     4.5     7.9    -      -       -      -
    299C  MET      3.0    21.0    +      -       -      -
    300C  ALA*     3.6    10.1    -      -       -      +
    302C  VAL*     1.3    75.1    -      -       -      +
    304C  ALA*     1.3    55.0    +      -       -      +
    307C  GLY*     2.6    34.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 304 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50C  GLU*     3.6    20.9    -      -       -      +
    300C  ALA      3.0    16.3    +      -       -      +
    301C  PRO      3.6     5.4    -      -       -      +
    303C  CYS*     1.3    78.4    -      -       -      +
    305C  VAL*     1.3    57.1    +      -       -      +
    308C  GLY*     2.9    25.5    +      -       -      -
     34D  LYS*     4.5     1.1    -      -       -      +
     35D  ASN*     3.7    24.2    -      -       -      +
    392D  ALA*     3.8    28.0    -      -       +      +
    396D  GLY*     4.2     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 305 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301C  PRO      3.2    18.1    +      -       -      +
    302C  VAL      3.2     3.5    +      -       -      +
    304C  ALA*     1.3    77.6    -      -       -      +
    306C  VAL*     1.3    62.9    +      -       +      +
    308C  GLY      3.3     0.9    +      -       -      -
    309C  ILE*     3.1    33.0    +      -       +      +
    329C  PHE*     5.2     0.7    -      -       +      -
    331C  PHE*     3.9    42.4    -      -       +      -
    393D  VAL*     3.6    40.4    -      -       +      +
    396D  GLY*     4.0     1.6    -      -       -      -
    397D  LEU*     3.9    22.7    -      -       +      +
    400D  LEU*     4.8     0.7    -      -       +      -
    429D  LEU*     4.4     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 306 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  LEU*     3.8    18.6    -      -       +      -
    157C  ASP      4.1     7.9    -      -       -      +
    158C  VAL*     4.2     5.4    -      -       +      -
    163C  GLY*     3.7    28.0    -      -       -      -
    164C  TYR      3.6    24.9    -      -       -      +
    165C  THR*     4.9     5.8    -      -       -      +
    302C  VAL*     2.8    23.8    +      -       +      +
    305C  VAL*     1.3    71.2    -      -       +      +
    307C  GLY*     1.3    65.6    +      -       -      +
    309C  ILE*     3.4     5.7    +      -       -      +
    310C  LEU*     3.0    24.0    +      -       +      +
    329C  PHE*     4.9     5.4    -      -       +      -
    331C  PHE*     4.1    18.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 307 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  LEU*     3.2    16.4    -      -       -      +
     50C  GLU*     4.2     6.3    -      -       -      -
     51C  ILE*     3.9    13.8    -      -       -      +
     54C  ASN*     3.2    15.9    +      -       -      -
    303C  CYS      2.6    24.7    +      -       -      -
    304C  ALA      3.9     0.4    -      -       -      -
    306C  VAL*     1.3    73.6    -      -       -      +
    308C  GLY*     1.3    59.1    +      -       -      +
    311C  ALA*     3.1    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 308 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54C  ASN*     3.7    12.3    -      -       -      +
    304C  ALA      2.9    18.8    +      -       -      -
    305C  VAL      3.7     1.3    -      -       -      -
    306C  VAL      3.2     0.2    -      -       -      -
    307C  GLY*     1.3    75.8    -      -       -      +
    309C  ILE*     1.3    58.7    +      -       -      +
    312C  GLN*     3.1    29.7    +      -       -      +
    389D  THR*     3.3    15.6    -      -       -      +
    392D  ALA*     4.7     1.6    -      -       -      -
    393D  VAL*     3.9    14.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 309 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165C  THR*     4.7     5.2    -      -       +      -
    305C  VAL*     3.1    20.5    +      -       +      +
    306C  VAL      3.9     4.0    -      -       -      +
    308C  GLY*     1.3    74.8    -      -       -      +
    310C  LEU*     1.3    66.3    +      -       -      +
    312C  GLN*     3.2    16.3    +      -       -      +
    313C  GLU*     3.0    29.8    +      -       +      +
    325C  HIS*     4.8     3.6    -      -       +      +
    329C  PHE*     3.8    49.6    -      -       +      -
    393D  VAL*     3.9    17.9    -      -       +      -
    418D  LEU*     4.4    14.8    -      -       +      -
    428D  LEU*     4.4    22.0    -      -       +      -
    429D  LEU*     5.5     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 310 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47C  LEU*     4.8     3.1    -      -       +      -
     51C  ILE*     3.8    24.2    -      -       +      -
    130C  CYS*     3.8    17.5    -      -       -      -
    131C  LEU      5.3     0.4    -      -       -      +
    154C  PHE*     3.8    35.4    -      -       +      -
    155C  THR      4.1     2.7    -      -       -      +
    156C  GLY*     4.0    21.5    -      -       -      -
    164C  TYR      5.3     0.2    -      -       -      +
    165C  THR*     3.0    28.2    +      -       +      +
    166C  PHE      4.9     0.4    -      -       -      +
    306C  VAL*     3.0    19.4    +      -       +      +
    307C  GLY      4.2     1.8    -      -       -      +
    309C  ILE*     1.3    74.6    -      -       -      +
    311C  ALA*     1.3    67.4    +      -       -      +
    313C  GLU*     2.9    16.3    +      -       +      +
    314C  ILE*     2.9    15.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 311 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51C  ILE*     4.4    10.0    -      -       -      +
     54C  ASN*     3.4    31.2    -      -       +      +
     55C  LEU*     3.9    15.9    -      -       +      +
    307C  GLY      3.1    19.1    +      -       -      +
    310C  LEU*     1.3    78.1    -      -       -      +
    312C  GLN*     1.3    57.4    +      -       -      +
    314C  ILE*     3.3     6.8    +      -       -      +
    315C  VAL*     2.9    35.4    +      -       +      +
    389D  THR*     3.7     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 312 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26C  TRP*     6.5     0.2    -      -       +      -
    308C  GLY      3.1    19.1    +      -       -      +
    309C  ILE*     3.3    20.4    -      -       -      +
    310C  LEU      3.0     0.8    -      -       -      -
    311C  ALA*     1.3    78.9    -      -       -      +
    313C  GLU*     1.3    61.4    -      -       -      +
    315C  VAL*     3.6     5.0    +      -       -      +
    316C  LYS*     3.1    37.2    +      -       +      +
    325C  HIS*     5.4     4.3    -      -       -      -
    144D  TYR*     3.7    36.9    +      -       +      +
    387D  ILE*     4.7     0.7    -      -       +      -
    389D  THR*     2.9    32.3    +      -       -      +
    390D  THR*     3.3    24.4    +      -       -      +
    393D  VAL*     5.7     1.2    -      -       -      +
    418D  LEU*     5.6     5.4    -      -       -      +
    428D  LEU*     5.9     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 313 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154C  PHE*     4.1    17.8    -      -       +      -
    165C  THR*     5.3     7.6    -      -       +      -
    167C  ALA*     5.6     1.6    -      -       +      -
    309C  ILE*     3.0    21.2    +      -       +      +
    310C  LEU*     2.9    11.2    +      -       +      +
    312C  GLN*     1.3    77.9    -      -       -      +
    314C  ILE*     1.3    68.4    +      -       -      +
    316C  LYS*     3.2    23.8    +      -       -      +
    317C  ALA*     2.9    25.3    +      -       -      +
    324C  PRO*     3.3    13.6    -      -       +      +
    325C  HIS*     2.8    65.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 314 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39C  VAL*     4.4     8.1    -      -       +      -
     51C  ILE*     4.4     5.4    -      -       +      -
     55C  LEU*     3.9    31.4    -      -       +      -
    128C  ALA*     4.5     8.3    -      -       +      -
    130C  CYS*     3.9    36.6    -      -       +      -
    154C  PHE*     3.6    31.2    -      -       +      -
    310C  LEU*     2.9    22.3    +      -       +      +
    311C  ALA*     3.6     6.5    -      -       -      +
    313C  GLU*     1.3    75.8    -      -       -      +
    315C  VAL*     1.3    64.1    +      -       -      +
    317C  ALA*     3.1     2.8    +      -       -      +
    318C  LEU*     3.0    41.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 315 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26C  TRP*     3.8    29.2    -      -       +      -
     34C  LEU*     3.7    34.5    -      -       +      +
     54C  ASN      5.3     0.9    -      -       -      +
     55C  LEU*     3.7    19.5    -      -       +      -
     58C  ALA*     4.0    18.8    -      -       +      -
     60C  VAL*     5.6     0.2    -      -       +      -
    311C  ALA*     2.9    22.5    +      -       +      +
    312C  GLN*     3.8     7.2    -      -       +      +
    314C  ILE*     1.3    76.9    -      -       -      +
    316C  LYS*     1.3    59.0    +      -       +      +
    318C  LEU      3.4     0.3    +      -       -      -
    319C  SER*     3.1    28.9    +      -       -      +
    389D  THR*     5.6     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 316 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172C  HIS*     4.4     1.7    +      -       -      -
    312C  GLN*     3.1    24.3    +      -       +      +
    313C  GLU*     3.2    45.4    +      -       -      +
    315C  VAL*     1.3    76.3    -      -       -      +
    317C  ALA*     1.3    59.8    +      -       -      +
    319C  SER*     3.6     7.0    -      -       -      -
    320C  GLN*     3.0    21.8    +      -       -      -
    321C  ARG      3.3    20.5    +      -       -      +
    322C  ASP*     3.8    25.5    -      -       -      +
    323C  PRO      3.8    18.4    +      -       -      -
    324C  PRO*     4.5     9.2    -      -       +      -
    325C  HIS*     4.4     6.7    +      -       -      -
    144D  TYR*     5.0    20.5    -      -       +      +
    420D  LYS*     4.5     7.7    +      -       -      +
    421D  GLN*     4.3    11.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 317 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152C  LYS*     3.1    28.8    -      -       +      -
    154C  PHE*     3.9    14.4    -      -       +      -
    169C  LEU*     3.8    26.0    -      -       +      -
    172C  HIS*     3.2    19.4    -      -       -      -
    313C  GLU      2.9    17.9    +      -       -      +
    314C  ILE      3.5     3.4    -      -       -      +
    316C  LYS*     1.3    78.8    -      -       -      +
    318C  LEU*     1.3    63.3    +      -       -      +
    320C  GLN*     3.3     8.1    +      -       -      +
    324C  PRO*     4.7     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 318 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  ARG*     3.9    13.1    -      -       -      +
     34C  LEU*     3.8    20.2    -      -       +      -
     37C  SER*     3.6    38.3    +      -       -      +
     39C  VAL*     3.8    22.4    -      -       +      -
     60C  VAL*     4.3     5.2    -      -       +      -
    127C  ASP*     3.9    22.4    -      -       +      +
    128C  ALA*     4.0    14.6    -      -       +      -
    152C  LYS*     4.3    10.4    -      -       +      +
    154C  PHE*     6.4     0.2    -      -       +      -
    314C  ILE*     3.0    29.7    +      -       +      +
    315C  VAL*     3.8     4.5    -      -       -      +
    317C  ALA*     1.3    78.6    -      -       -      +
    319C  SER*     1.3    60.2    +      -       -      +
    320C  GLN*     3.6     5.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 319 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26C  TRP*     5.7     4.4    -      -       -      +
     30C  ALA*     3.6    32.2    -      -       -      +
     33C  ARG*     3.1    33.5    +      -       -      -
     34C  LEU*     4.8     5.8    -      -       -      +
    315C  VAL*     3.1    19.5    +      -       -      +
    316C  LYS*     3.5     6.6    +      -       -      -
    318C  LEU*     1.3    75.4    -      -       -      +
    320C  GLN*     1.3    71.1    +      -       -      +
    321C  ARG*     3.2    18.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 320 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33C  ARG*     4.3    19.1    +      -       -      +
    152C  LYS*     4.8     8.9    +      -       -      -
    172C  HIS*     4.3     6.0    -      -       +      -
    173C  GLU*     3.6    26.2    +      -       -      +
    174C  PHE*     3.7    12.5    -      -       -      +
    175C  VAL*     3.1    28.2    +      -       -      +
    316C  LYS      3.0     9.6    +      -       -      -
    317C  ALA      3.3    14.5    +      -       -      +
    318C  LEU      4.3     4.5    -      -       -      +
    319C  SER*     1.3    81.4    -      -       -      +
    321C  ARG*     1.3    57.8    +      -       -      +
----------------------------------------------------------
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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