Contacts of the helix formed by residues 117 - 138 (chain A) in PDB entry 3M6L


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 GLY 117 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  SER*     4.1     0.2    +      -       -      -
    116A  LEU*     1.3    73.1    -      -       -      +
    118A  GLN*     1.3    66.3    +      -       -      +
    119A  GLY      3.2     2.6    +      -       -      -
    120A  VAL*     3.3    15.0    +      -       -      +
    121A  ALA*     3.4     7.8    +      -       -      +
    154A  ASP*     2.8    36.7    +      -       -      +
    157A  GLU*     4.3     1.3    -      -       -      -
    159A  ILE*     3.5    25.7    -      -       -      +
    160A  SER      4.8     1.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  ALA      5.4     3.6    -      -       -      +
    113A  THR*     5.5     2.0    -      -       +      -
    115A  PRO*     3.3    36.7    +      -       +      +
    116A  LEU      3.1     9.9    +      -       -      -
    117A  GLY*     1.3    77.9    -      -       -      +
    119A  GLY*     1.3    51.1    +      -       -      +
    121A  ALA*     3.0     4.7    +      -       -      +
    122A  ASN*     2.7    48.3    +      -       -      +
    159A  ILE*     3.9     9.0    -      -       -      +
    392A  HIS*     2.9    34.5    +      -       -      -
    396A  ALA*     3.7     9.2    -      -       -      +
    399A  ASN*     5.0     1.2    +      -       -      -
    423A  PRO*     3.9    12.3    -      -       -      +
    424A  ALA*     3.4    28.3    -      -       -      +
    427A  ILE*     4.6    11.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  VAL*     3.6    15.9    -      -       -      +
     64A  SER*     3.2    23.1    +      -       -      +
    113A  THR*     4.1     6.2    -      -       -      +
    115A  PRO      4.7     1.0    +      -       -      -
    117A  GLY      3.2     0.8    -      -       -      -
    118A  GLN*     1.3    77.2    -      -       -      +
    120A  VAL*     1.3    59.4    +      -       -      +
    122A  ASN*     3.2    13.2    +      -       -      +
    123A  ALA*     2.8    31.2    +      -       -      +
    148A  CYS*     4.2     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64A  SER*     3.1    13.8    +      -       -      +
    117A  GLY      3.3     7.4    +      -       -      +
    118A  GLN      3.3     0.6    -      -       -      -
    119A  GLY*     1.3    75.1    -      -       -      +
    121A  ALA*     1.4    59.0    +      -       -      +
    123A  ALA*     3.2     3.6    +      -       -      +
    124A  VAL*     3.0    28.2    +      -       +      +
    148A  CYS*     4.0    10.1    -      -       -      -
    150A  CYS*     3.9    24.0    -      -       +      -
    154A  ASP*     3.9    12.3    -      -       +      -
    155A  LEU*     4.5     7.2    -      -       +      -
    160A  SER*     4.4    17.5    -      -       -      +
    163A  ALA*     5.0     0.2    -      -       +      -
    164A  CYS*     3.9    28.0    -      -       -      -
    175A  PHE*     4.3     3.3    -      -       +      -
    177A  LEU*     4.3    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 121 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  GLY      3.4     2.9    +      -       -      +
    118A  GLN      3.0     8.1    +      -       -      +
    120A  VAL*     1.4    77.2    -      -       -      +
    122A  ASN*     1.3    61.6    +      -       -      +
    124A  VAL*     3.3     0.9    +      -       -      +
    125A  GLY*     2.9    23.7    +      -       -      -
    159A  ILE*     3.9    20.6    -      -       +      +
    163A  ALA*     3.5    25.6    -      -       +      -
    393A  ALA*     4.5     5.2    -      -       -      +
    396A  ALA*     3.6    21.1    -      -       +      -
    397A  ILE*     3.6    11.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 122 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  VAL*     4.9     0.4    -      -       +      -
    111A  ILE*     3.4    47.7    -      -       +      +
    112A  ALA      4.3     3.0    +      -       -      -
    113A  THR*     4.2     4.6    -      -       -      +
    118A  GLN*     2.7    34.1    +      -       -      +
    119A  GLY*     3.2    16.7    +      -       -      +
    121A  ALA*     1.3    74.7    -      -       -      +
    123A  ALA*     1.3    56.6    +      -       -      +
    125A  GLY      3.1     1.7    +      -       -      -
    126A  PHE*     2.8    30.5    +      -       +      -
    396A  ALA*     2.9    31.1    -      -       -      +
    399A  ASN*     4.2     5.4    +      -       -      +
    400A  ALA*     3.1     9.3    -      -       +      +
    427A  ILE*     5.7     2.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 123 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  VAL*     4.4     6.0    -      -       +      +
    119A  GLY      2.8    20.3    +      -       -      +
    120A  VAL      3.2     3.6    +      -       -      +
    122A  ASN*     1.3    70.5    -      -       -      +
    124A  VAL*     1.4    64.0    +      -       -      +
    126A  PHE*     3.2     6.1    +      -       -      -
    127A  ALA*     3.0    22.3    +      -       -      +
    146A  ILE*     3.6    20.0    -      -       +      +
    148A  CYS*     3.6    19.5    -      -       +      -
    175A  PHE*     3.5    24.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 124 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120A  VAL      3.0    15.5    +      -       -      +
    121A  ALA      3.7     6.3    -      -       -      +
    123A  ALA*     1.4    75.1    -      -       -      +
    125A  GLY*     1.4    58.8    +      -       -      +
    127A  ALA*     3.1     7.9    +      -       -      +
    128A  MSE      2.9    41.5    +      -       -      +
    163A  ALA*     3.5    36.3    -      -       +      +
    164A  CYS*     4.4     4.3    -      -       -      +
    166A  LEU*     4.8     0.4    -      -       +      -
    167A  ALA*     4.0     8.3    -      -       +      +
    172A  LEU*     3.9    16.8    -      -       +      -
    175A  PHE*     3.7    25.4    -      -       +      -
    397A  ILE*     4.2     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 125 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121A  ALA      2.9    13.7    +      -       -      -
    122A  ASN      3.1     4.5    +      -       -      -
    124A  VAL*     1.4    76.8    -      -       -      +
    126A  PHE*     1.3    54.9    +      -       -      +
    128A  MSE      3.7     2.3    -      -       -      +
    129A  ALA*     2.8    31.7    +      -       -      +
    397A  ILE*     3.8    35.0    -      -       -      +
    400A  ALA*     3.7     6.5    -      -       -      -
    401A  PHE*     3.9     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 126 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  ARG*     6.2     0.2    -      -       -      -
     60A  ARG*     4.3    21.5    -      -       +      -
     62A  VAL*     3.9    29.6    -      -       +      -
    110A  GLU*     4.0    22.4    -      -       +      -
    111A  ILE*     4.1    16.6    -      -       +      -
    122A  ASN      2.8    26.7    +      -       -      -
    123A  ALA*     3.2     5.6    +      -       -      +
    125A  GLY*     1.3    72.5    -      -       -      +
    127A  ALA*     1.3    57.2    +      -       -      +
    129A  ALA*     3.8     3.4    -      -       -      +
    130A  ALA*     2.9    30.0    +      -       -      +
    146A  ILE*     3.9    15.8    -      -       +      +
    400A  ALA*     3.4    32.3    -      -       +      -
    403A  ARG*     3.7    24.0    -      -       +      -
    404A  TYR*     3.8    22.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with ALA 127 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  ALA      3.0    13.1    +      -       -      +
    124A  VAL*     3.5     8.1    -      -       -      +
    126A  PHE*     1.3    75.0    -      -       -      +
    128A  MSE      1.3    59.8    +      -       -      +
    130A  ALA      3.4     0.3    +      -       -      -
    131A  LYS*     2.9    26.7    +      -       -      +
    146A  ILE*     3.6    17.7    -      -       +      +
    172A  LEU*     3.9    16.4    -      -       +      -
    174A  ASN*     3.1    28.0    +      -       -      +
    175A  PHE*     4.0    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with MSE 128 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124A  VAL*     2.9    23.6    +      -       -      +
    125A  GLY      3.8     3.8    -      -       -      +
    127A  ALA*     1.3    78.7    -      -       -      +
    129A  ALA*     1.3    56.1    +      -       -      +
    131A  LYS*     3.2     2.2    +      -       -      +
    132A  LYS      3.0    22.9    +      -       -      -
    166A  LEU*     4.7    12.3    -      -       +      -
    170A  HIS*     4.0    20.9    -      -       +      +
    172A  LEU*     3.6    23.8    -      -       +      -
    379A  PHE*     3.4    38.9    -      -       +      -
    385A  ILE*     4.2    22.7    -      -       +      -
    387A  PHE*     5.3     0.7    -      -       +      -
    397A  ILE*     4.1    33.4    -      -       +      -
    401A  PHE*     3.8    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 129 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125A  GLY      2.8    21.2    +      -       -      +
    126A  PHE*     4.3     0.9    -      -       -      -
    128A  MSE      1.3    71.8    -      -       -      +
    130A  ALA*     1.3    51.7    +      -       -      +
    132A  LYS*     3.2     1.4    +      -       -      -
    133A  ALA*     2.7    35.3    +      -       -      +
    401A  PHE*     3.6    34.2    -      -       +      -
    404A  TYR*     3.7    33.0    -      -       +      -
    407A  PHE*     3.4     8.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126A  PHE      2.9    18.3    +      -       -      +
    129A  ALA*     1.3    72.5    -      -       -      +
    131A  LYS*     1.4    61.1    +      -       -      +
    133A  ALA      3.2     0.7    +      -       -      -
    134A  GLN*     2.8    30.7    +      -       -      +
    142A  ILE*     3.5     7.4    -      -       +      +
    144A  HIS*     3.5    33.4    -      -       +      +
    146A  ILE*     4.1     0.7    -      -       +      -
    174A  ASN*     3.5    20.6    -      -       -      +
    404A  TYR*     3.6    11.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127A  ALA      2.9    19.0    +      -       -      +
    128A  MSE      3.2     7.8    +      -       -      +
    130A  ALA*     1.4    77.9    -      -       -      +
    132A  LYS*     1.4    55.7    +      -       -      +
    134A  GLN*     3.5    31.3    +      -       -      +
    135A  ASN*     3.0    21.0    +      -       -      +
    170A  HIS      5.5     1.6    -      -       -      +
    171A  LYS      4.3     7.5    +      -       -      -
    172A  LEU*     3.7    15.5    -      -       +      +
    173A  ASP*     2.5    37.1    +      -       -      +
    174A  ASN*     3.9    24.1    -      -       -      +
    379A  PHE*     4.7     2.9    -      -       +      -
    380A  VAL*     3.4    21.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  MSE      3.0    14.1    +      -       -      +
    129A  ALA      3.2     7.6    +      -       -      +
    131A  LYS*     1.4    72.6    -      -       -      +
    133A  ALA*     1.3    65.5    +      -       -      +
    135A  ASN*     3.0    22.9    +      -       -      +
    136A  LEU*     3.1    39.5    +      -       -      +
    356A  GLU      6.0     0.9    -      -       -      -
    359A  LEU*     4.1    17.0    -      -       +      -
    379A  PHE*     3.9    13.2    -      -       +      -
    380A  VAL*     3.0    32.8    +      -       +      +
    381A  GLU      3.3     8.7    +      -       -      -
    382A  GLY*     3.0    23.3    +      -       -      +
    383A  LYS*     5.2     6.3    -      -       -      +
    401A  PHE*     4.5     3.1    -      -       +      -
    407A  PHE*     3.8    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129A  ALA      2.7    20.6    +      -       -      +
    130A  ALA      3.2     4.9    +      -       -      +
    132A  LYS*     1.3    71.7    -      -       -      +
    134A  GLN*     1.3    56.2    +      -       -      +
    136A  LEU*     3.2     3.9    +      -       -      +
    137A  LEU*     2.8    34.6    +      -       +      +
    142A  ILE*     3.9    14.1    -      -       +      -
    404A  TYR*     3.7    28.3    -      -       +      +
    406A  ILE*     3.8    18.2    -      -       +      -
    407A  PHE*     3.7     6.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 134 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130A  ALA      2.8    17.0    +      -       -      +
    131A  LYS*     3.6    33.6    +      -       -      +
    132A  LYS      3.2     0.2    -      -       -      -
    133A  ALA*     1.3    76.5    -      -       -      +
    135A  ASN*     1.3    58.9    +      -       -      +
    138A  GLY*     2.9    29.2    +      -       -      -
    139A  SER*     3.8    26.7    -      -       -      +
    142A  ILE*     2.9    36.3    -      -       +      +
    143A  ASP*     4.4     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  LYS      3.0    13.8    +      -       -      +
    132A  LYS*     3.0    36.4    -      -       -      +
    134A  GLN*     1.3    79.1    -      -       -      +
    136A  LEU*     1.3    67.1    +      -       -      +
    138A  GLY      4.7     0.7    +      -       -      -
    313A  LYS*     5.9     0.3    +      -       -      -
    380A  VAL*     3.5    23.2    +      -       +      +
    381A  GLU*     3.6    24.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    132A  LYS*     3.1    28.8    +      -       -      +
    133A  ALA      3.6     6.7    -      -       -      +
    135A  ASN*     1.3    91.9    -      -       -      +
    137A  LEU*     1.3    65.9    +      -       +      +
    138A  GLY      3.6     0.2    -      -       -      -
    313A  LYS*     3.5    20.7    +      -       -      -
    316A  LEU*     3.5    25.6    -      -       +      +
    320A  LEU*     4.5    17.7    -      -       +      -
    356A  GLU*     4.4    19.1    -      -       +      +
    406A  ILE*     4.5     2.0    -      -       +      -
    407A  PHE*     4.0    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  LEU*     4.0    26.5    -      -       +      -
    133A  ALA      2.8    18.0    +      -       -      +
    136A  LEU*     1.3    82.6    -      -       +      +
    138A  GLY*     1.3    60.6    +      -       -      +
    140A  ASP*     3.9     2.8    -      -       -      +
    141A  LEU*     3.6    24.8    -      -       +      +
    142A  ILE*     4.1    17.7    -      -       +      -
    304A  TRP*     6.0     1.1    -      -       +      -
    311A  SER*     4.5     0.3    +      -       -      -
    313A  LYS*     3.3    41.7    -      -       +      +
    316A  LEU*     4.1    16.6    -      -       +      -
    317A  LEU*     4.2    18.8    -      -       +      -
    320A  LEU*     4.2    14.1    -      -       +      -
    406A  ILE*     4.3    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  GLN*     2.9    19.9    +      -       -      -
    135A  ASN      4.6     0.6    +      -       -      -
    136A  LEU      3.6     1.2    -      -       -      -
    137A  LEU*     1.3    77.7    -      -       -      +
    139A  SER*     1.3    59.8    +      -       -      -
    140A  ASP*     3.2    10.3    -      -       -      -
    141A  LEU      3.1     4.0    +      -       -      -
    142A  ILE*     3.0    26.3    +      -       -      +
    313A  LYS*     5.0     1.7    -      -       -      +
----------------------------------------------------------
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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