Contacts of the helix formed by residues 166 - 188 (chain A) in PDB entry 4CQM


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 GLN 166 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  THR*     4.0    11.1    -      -       -      +
    109A  ASP*     3.3    37.8    +      -       -      +
    158A  VAL*     3.7     6.8    -      -       -      +
    163A  ASN*     2.9    46.4    +      -       +      +
    164A  VAL      4.2     5.6    -      -       -      +
    165A  GLY*     1.3    78.3    -      -       -      +
    167A  THR*     1.3    59.8    +      -       -      +
    168A  ASN*     3.3     8.1    -      -       -      -
    169A  TYR*     3.4    40.3    -      -       +      -
    170A  ALA*     2.9    28.6    +      -       -      +
    201A  PHE*     6.1     0.2    -      -       -      -
    182D  THR*     3.7     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 167 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  LEU*     3.8    28.9    +      -       +      +
    115A  MET*     3.8    14.7    -      -       -      +
    120A  TRP*     3.8     0.8    -      -       +      -
    165A  GLY      3.7     1.8    -      -       -      -
    166A  GLN*     1.3    75.8    -      -       -      +
    168A  ASN*     1.3    63.0    +      -       -      +
    170A  ALA*     4.3     0.5    -      -       -      +
    171A  ALA*     3.2    24.9    +      -       -      +
    132D  PHE*     3.6    32.5    -      -       +      -
    179D  LEU*     3.8    24.2    -      -       +      +
    182D  THR*     3.3    22.4    -      -       -      +
    183D  ALA      5.0     0.3    +      -       -      -
    186D  GLU*     4.0     3.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 168 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  GLN      2.9    29.4    +      -       -      +
    109A  ASP*     4.7     0.9    -      -       -      +
    115A  MET*     3.5    26.0    -      -       -      +
    119A  ASP*     3.0    21.2    +      -       -      +
    120A  TRP*     3.6    28.0    -      -       +      +
    123A  VAL*     3.4    21.1    -      -       +      +
    124A  ILE*     3.7     5.8    -      -       +      +
    165A  GLY      4.5     1.0    -      -       -      +
    166A  GLN*     3.8     8.0    -      -       -      -
    167A  THR*     1.3    73.6    -      -       -      +
    169A  TYR*     1.3    82.0    +      -       -      +
    172A  SER*     3.2    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 169 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  ILE      3.6     9.4    -      -       -      -
    107A  THR*     3.6    24.9    -      -       +      -
    109A  ASP*     4.7     2.2    -      -       -      +
    123A  VAL*     3.9     4.3    -      -       +      -
    127A  ASN*     3.6    18.4    -      -       -      -
    155A  SER      4.9     0.9    +      -       -      -
    156A  SER*     3.9    22.0    +      -       -      -
    158A  VAL*     3.8    14.8    -      -       +      -
    166A  GLN*     3.4    40.8    +      -       +      +
    167A  THR      3.4     0.4    -      -       -      -
    168A  ASN*     1.3    83.6    +      -       -      +
    170A  ALA*     1.3    58.3    +      -       -      +
    172A  SER*     2.6    19.7    +      -       -      -
    173A  LYS*     3.0    54.9    +      -       +      +
    206A  MET*     4.2    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 170 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158A  VAL*     3.6    33.7    -      -       +      +
    159A  GLY*     3.8     4.2    -      -       -      -
    162A  GLY*     3.9     0.4    -      -       -      -
    166A  GLN      2.9    18.9    +      -       -      +
    167A  THR      4.3     0.9    -      -       -      +
    169A  TYR*     1.3    75.6    -      -       -      +
    171A  ALA*     1.3    61.0    +      -       -      +
    173A  LYS*     4.5     0.4    -      -       -      +
    174A  ALA*     2.9    33.1    +      -       -      +
    178D  GLY*     3.9    11.7    -      -       -      +
    182D  THR*     3.3    19.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 171 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120A  TRP*     3.6    28.0    -      -       +      -
    124A  ILE*     4.5     2.5    -      -       +      -
    167A  THR      3.2    19.3    +      -       -      +
    168A  ASN      4.0     1.3    -      -       -      +
    170A  ALA*     1.3    78.0    -      -       -      +
    172A  SER*     1.3    57.6    +      -       -      +
    175A  GLY*     3.2    12.0    +      -       -      -
    128D  LEU*     4.2     7.1    -      -       +      +
    175D  GLY*     3.2    45.4    -      -       -      +
    178D  GLY*     4.5     0.2    -      -       -      -
    179D  LEU*     4.0     7.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 172 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  VAL*     3.8     4.0    -      -       -      +
    124A  ILE*     3.8    17.0    -      -       -      +
    127A  ASN*     3.6    30.9    +      -       -      +
    128A  LEU*     3.7    13.8    -      -       -      +
    168A  ASN      3.2    15.4    +      -       -      -
    169A  TYR*     2.6    25.6    +      -       -      -
    171A  ALA*     1.3    76.1    -      -       -      +
    173A  LYS*     1.3    61.0    +      -       -      +
    175A  GLY*     3.2     2.3    +      -       -      -
    176A  VAL*     2.9    33.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 173 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  ALA      5.3     1.6    +      -       -      -
    105A  GLY*     5.0     8.5    -      -       -      -
    127A  ASN*     3.8    24.1    +      -       +      +
    131A  THR*     5.9     0.4    +      -       -      -
    154A  ILE*     3.4    20.2    +      -       -      +
    155A  SER*     2.9    43.9    +      -       -      +
    156A  SER*     3.7    13.0    -      -       -      -
    159A  GLY*     3.7    18.6    -      -       -      +
    169A  TYR*     3.0    53.1    +      -       +      +
    172A  SER*     1.3    79.8    +      -       -      +
    174A  ALA*     1.3    64.6    +      -       -      +
    176A  VAL*     3.2    15.1    +      -       +      +
    177A  ILE*     3.3     7.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 174 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159A  GLY*     3.3    24.1    -      -       -      +
    170A  ALA      2.9    18.4    +      -       -      +
    173A  LYS*     1.3    77.3    -      -       -      +
    175A  GLY*     1.3    63.5    +      -       -      +
    177A  ILE*     3.2    15.9    +      -       -      +
    178A  GLY      3.3     3.3    +      -       -      -
    174D  ALA*     3.2    39.7    -      -       +      +
    175D  GLY*     4.2     1.8    -      -       -      -
    178D  GLY*     4.1    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 175 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  LEU*     3.5    13.0    -      -       -      -
    171A  ALA      3.2     9.2    +      -       -      -
    172A  SER      3.2     8.1    +      -       -      -
    174A  ALA*     1.3    78.4    -      -       -      +
    176A  VAL*     1.3    58.4    +      -       -      +
    178A  GLY      3.4     0.9    +      -       -      -
    179A  LEU*     2.8    30.0    +      -       -      +
    171D  ALA*     3.2    31.9    -      -       -      +
    175D  GLY      4.0     0.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 176 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127A  ASN      3.5    24.2    -      -       -      +
    128A  LEU*     3.6     6.9    -      -       +      +
    131A  THR*     3.9    13.0    -      -       +      +
    153A  ASN*     3.7    27.8    -      -       +      -
    154A  ILE      4.8     3.4    -      -       -      +
    155A  SER*     4.2    19.3    -      -       -      +
    172A  SER      2.9    21.2    +      -       -      +
    173A  LYS*     3.4    18.6    -      -       +      +
    174A  ALA      3.2     0.2    -      -       -      -
    175A  GLY*     1.3    76.3    -      -       -      +
    177A  ILE*     1.3    54.1    +      -       -      +
    179A  LEU*     3.2     8.2    +      -       -      +
    180A  THR*     2.8    38.0    +      -       -      +
    196A  SER*     4.5     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 177 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155A  SER*     3.5    21.3    -      -       -      +
    159A  GLY      3.6    24.9    -      -       -      +
    160A  LYS*     5.2     1.6    -      -       +      -
    173A  LYS      3.3    12.1    -      -       -      +
    174A  ALA*     3.2     6.4    +      -       -      +
    176A  VAL*     1.3    76.6    -      -       -      +
    178A  GLY*     1.3    57.6    +      -       -      +
    180A  THR*     3.2     2.9    +      -       -      -
    181A  GLN*     3.0    50.1    +      -       +      +
    196A  SER*     3.9     9.9    -      -       -      +
    198A  LEU*     3.8    25.1    -      -       +      -
    252A  SER*     3.5    20.6    -      -       -      +
    174D  ALA*     5.8     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 178 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174A  ALA      3.3     8.1    +      -       -      -
    175A  GLY      3.8     2.5    -      -       -      -
    177A  ILE*     1.3    78.8    -      -       -      +
    179A  LEU*     1.3    60.0    +      -       -      +
    181A  GLN*     3.5    16.1    -      -       -      +
    182A  THR*     3.1    26.0    +      -       -      -
    158D  VAL      5.3     1.6    -      -       -      -
    159D  GLY      5.3     1.6    -      -       -      -
    162D  GLY*     4.4     0.3    -      -       -      -
    170D  ALA*     3.4    16.7    -      -       -      +
    171D  ALA      4.4     0.7    -      -       -      -
    174D  ALA*     4.2    15.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 179 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  LEU*     3.9    14.6    -      -       +      +
    131A  THR*     4.6     4.0    -      -       +      -
    132A  PHE*     3.5    44.0    -      -       +      +
    135A  THR*     4.3    23.1    -      -       +      +
    153A  ASN*     4.8     3.1    -      -       -      +
    175A  GLY      2.8    15.1    +      -       -      +
    176A  VAL*     3.2     9.2    -      -       -      +
    178A  GLY*     1.3    77.4    -      -       -      +
    180A  THR*     1.3    64.6    +      -       -      +
    182A  THR*     3.3     5.5    +      -       -      -
    183A  ALA*     3.1    19.7    +      -       +      +
    112D  LEU*     5.5     0.2    -      -       +      -
    120D  TRP*     3.6    17.9    -      -       +      -
    167D  THR*     4.0    30.9    -      -       +      +
    171D  ALA*     4.2     2.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 180 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151A  ILE      4.9     0.4    -      -       -      +
    153A  ASN*     2.7    31.2    +      -       -      +
    176A  VAL      2.8    18.1    +      -       -      -
    177A  ILE      3.8     1.6    -      -       -      -
    179A  LEU*     1.3    74.4    -      -       -      +
    181A  GLN*     1.3    59.8    +      -       -      +
    183A  ALA*     3.3     6.7    +      -       -      +
    184A  ALA*     2.9    28.3    +      -       -      +
    194A  CYS*     3.5    35.4    -      -       +      +
    195A  ASN*     3.5    19.3    -      -       -      +
    196A  SER*     3.1    16.8    +      -       -      +
    250A  GLY*     5.4     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 181 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177A  ILE*     3.0    32.5    +      -       +      +
    178A  GLY*     3.5    18.7    -      -       -      +
    179A  LEU      3.3     0.2    -      -       -      -
    180A  THR*     1.3    78.3    -      -       -      +
    182A  THR*     1.3    61.6    +      -       -      +
    184A  ALA*     3.3     3.4    +      -       -      -
    185A  ARG*     3.2    18.5    +      -       -      +
    250A  GLY*     4.7    12.9    +      -       -      +
    252A  SER*     5.3     2.9    +      -       -      +
    234B  GLN*     5.5     6.5    -      -       -      +
    235B  LEU*     3.4    32.3    -      -       +      +
    159D  GLY      5.0     0.5    -      -       -      +
    160D  LYS*     2.8    35.9    +      -       -      +
    161D  VAL*     3.4    23.4    -      -       -      +
    162D  GLY      3.6     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 182 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178A  GLY      3.1    13.1    +      -       -      -
    179A  LEU      3.3     8.6    +      -       -      -
    180A  THR      3.3     0.2    -      -       -      -
    181A  GLN*     1.3    74.9    -      -       -      +
    183A  ALA*     1.3    66.1    +      -       -      +
    185A  ARG*     3.3     6.0    +      -       -      +
    186A  GLU*     3.1    33.2    +      -       -      +
    162D  GLY*     3.6     0.8    -      -       -      -
    163D  ASN      3.1    36.4    +      -       -      +
    167D  THR*     3.2    35.2    -      -       -      +
    170D  ALA*     3.3    18.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 183 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135A  THR*     4.3    10.1    -      -       +      -
    179A  LEU*     3.1    14.5    +      -       +      +
    180A  THR*     3.3    11.4    +      -       -      +
    182A  THR*     1.3    76.9    -      -       -      +
    184A  ALA*     1.3    55.0    +      -       -      +
    186A  GLU*     3.2     3.0    +      -       -      -
    187A  LEU*     2.7    40.6    +      -       +      +
    194A  CYS*     3.8    18.4    -      -       +      -
    112D  LEU*     3.9    28.5    -      -       +      -
    167D  THR*     5.1     1.1    +      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 184 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180A  THR      2.9    16.8    +      -       -      +
    181A  GLN      3.5     5.8    -      -       -      +
    182A  THR      3.2     0.2    -      -       -      -
    183A  ALA*     1.3    78.0    -      -       -      +
    185A  ARG*     1.3    60.1    +      -       -      +
    188A  GLY*     3.2    22.0    +      -       -      -
    192A  ILE      4.8     1.5    -      -       -      +
    194A  CYS*     3.6    11.4    -      -       -      +
    249A  THR*     3.2    27.8    +      -       +      +
    250A  GLY*     3.5    21.3    -      -       -      +
    199B  PRO*     3.9     8.7    -      -       -      +
    235B  LEU*     4.4     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 185 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  GLN      3.2    10.0    +      -       -      +
    182A  THR*     3.8     8.7    -      -       -      +
    183A  ALA      3.3     0.4    -      -       -      -
    184A  ALA*     1.3    80.3    -      -       -      +
    186A  GLU*     1.3    61.1    +      -       -      +
    188A  GLY*     4.4     2.5    +      -       -      -
    189A  ARG*     3.6    22.3    +      -       -      +
    197B  ASN*     5.2     8.4    +      -       -      +
    199B  PRO*     4.2    27.7    -      -       +      +
    235B  LEU*     4.4    14.1    +      -       +      +
    236B  ILE*     3.4    31.2    -      -       +      +
    162D  GLY      5.4     2.7    -      -       -      -
    163D  ASN*     4.7    11.8    +      -       -      +
    164D  VAL*     3.2    44.4    -      -       +      +
    221D  MET*     5.9     4.4    -      -       -      +
    260D  PHE*     6.2     0.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 186 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182A  THR*     3.1    28.3    +      -       -      +
    183A  ALA*     3.9     2.9    -      -       -      +
    185A  ARG*     1.3    78.1    -      -       -      +
    187A  LEU*     1.3    64.7    +      -       +      +
    188A  GLY      3.3     4.5    -      -       -      -
    189A  ARG*     3.2    35.2    +      -       -      +
    190A  HIS*     4.0     6.1    +      -       -      -
    111D  PHE*     4.1    12.7    -      -       +      +
    112D  LEU*     3.2    35.4    +      -       -      +
    164D  VAL*     3.3    22.6    -      -       +      -
    165D  GLY*     2.5    34.5    +      -       -      -
    167D  THR*     4.1     2.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 187 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  ALA*     3.6    34.1    -      -       +      -
    143A  VAL*     4.5     5.2    -      -       +      -
    151A  ILE*     4.2     6.3    -      -       +      -
    183A  ALA*     2.7    25.1    +      -       +      +
    186A  GLU*     1.3    75.5    -      -       +      +
    188A  GLY*     1.3    64.2    +      -       -      +
    189A  ARG      3.1     2.9    -      -       -      -
    190A  HIS*     3.1    25.1    +      -       +      +
    192A  ILE*     3.1    40.5    +      -       +      +
    194A  CYS*     3.8    18.4    -      -       -      -
    112D  LEU*     3.7    20.9    -      -       +      -
    113D  LEU*     4.2    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 188 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  ALA      3.2    16.1    +      -       -      -
    185A  ARG      4.4     1.1    -      -       -      -
    186A  GLU      3.3     2.0    -      -       -      +
    187A  LEU*     1.3    79.1    -      -       -      +
    189A  ARG*     1.3    57.6    +      -       -      +
    190A  HIS      3.2     1.2    +      -       -      -
    191A  GLY*     3.4    10.8    +      -       -      -
    192A  ILE      4.1     7.2    -      -       -      -
    199B  PRO*     3.2    28.3    -      -       -      +
    200B  LEU*     4.3    16.3    -      -       -      +
----------------------------------------------------------
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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