Contacts of the helix formed by residues 28 - 50 (chain D) in PDB entry 1FTA


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 28 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  MET*     3.8    20.6    -      -       -      +
     22B  ARG*     4.0     6.3    -      -       -      -
     21D  GLY*     6.5     0.2    -      -       -      -
     26D  GLY*     3.2     4.9    -      -       -      -
     27D  THR*     1.3    80.3    -      -       -      +
     29D  GLU*     1.3    58.6    +      -       -      +
     30D  LEU      3.5     1.6    -      -       -      -
     31D  THR*     3.3    13.7    +      -       -      -
     32D  GLN*     3.0    30.7    +      -       -      +
    338D  AMP      2.9     4.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 29 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22B  ARG*     3.8    15.2    -      -       -      +
     27D  THR*     3.5    10.4    +      -       -      +
     28D  GLY*     1.3    74.9    -      -       -      +
     30D  LEU*     1.3    64.8    +      -       -      +
     32D  GLN*     3.0     5.9    +      -       -      +
     33D  LEU      2.9    19.1    +      -       -      -
     88D  SER      5.5     0.7    -      -       -      +
     89D  PHE      3.7     7.1    -      -       -      +
     90D  ALA*     3.5    27.8    -      -       +      +
    111D  GLY*     3.4    14.9    -      -       -      -
    112D  LYS*     3.1    50.9    +      -       -      +
    113D  TYR*     3.4     7.4    -      -       -      -
    338D  AMP      2.8     8.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 30 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29D  GLU*     1.3    77.8    -      -       -      +
     31D  THR*     1.3    55.9    +      -       -      +
     33D  LEU*     3.4    14.7    +      -       +      -
     34D  LEU*     2.9    48.7    +      -       +      +
    113D  TYR*     4.1    29.1    -      -       +      +
    138D  ILE*     4.5    13.5    -      -       +      -
    160D  VAL*     3.8    16.4    -      -       +      -
    161D  ALA*     5.5     3.6    -      -       +      -
    177D  MET*     5.5     3.4    -      -       -      -
    338D  AMP      3.2    64.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 31 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  MET*     4.4     8.5    -      -       -      +
     17D  VAL*     3.7    24.5    -      -       +      -
     18D  MET*     4.2    28.3    -      -       +      -
     21D  GLY*     4.1     6.9    -      -       -      -
     28D  GLY*     3.3    17.9    +      -       -      -
     29D  GLU      3.1     0.4    -      -       -      -
     30D  LEU*     1.3    74.7    -      -       -      +
     32D  GLN*     1.3    64.6    +      -       -      +
     34D  LEU*     3.9     0.5    -      -       -      +
     35D  ASN*     3.0    39.0    +      -       -      +
    338D  AMP      3.2    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 32 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  ARG*     3.2    42.6    -      -       +      +
     18B  MET*     3.4    26.4    -      -       +      +
     19B  GLU*     3.2    30.6    +      -       -      +
     22B  ARG*     4.3     8.3    -      -       -      +
     28D  GLY      3.0    18.5    +      -       -      +
     29D  GLU*     3.0     7.8    +      -       -      +
     31D  THR*     1.3    75.6    -      -       -      +
     33D  LEU*     1.3    58.4    +      -       -      +
     35D  ASN*     3.1    17.2    +      -       -      +
     36D  SER*     2.7    33.2    +      -       -      +
     88D  SER*     3.8    21.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 33 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29D  GLU      2.9     7.5    +      -       -      +
     30D  LEU*     3.6    10.5    -      -       +      +
     32D  GLN*     1.3    77.0    -      -       -      +
     34D  LEU*     1.3    67.7    +      -       +      +
     36D  SER*     3.0     3.6    +      -       -      -
     37D  LEU*     3.0    27.9    +      -       +      +
     85D  LEU*     3.9    23.1    -      -       +      +
     88D  SER*     4.0    12.2    -      -       -      -
     90D  ALA*     3.7    17.5    -      -       +      -
     91D  THR*     4.0    11.7    -      -       +      -
    113D  TYR*     3.6    37.7    -      -       +      -
    115D  VAL*     4.2     3.8    -      -       +      -
    138D  ILE*     3.4    37.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 34 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13D  LEU*     5.4     2.1    -      -       -      +
     17D  VAL*     4.2    23.8    -      -       +      -
     30D  LEU*     2.9    43.3    +      -       +      +
     31D  THR      4.1     2.7    -      -       -      +
     33D  LEU*     1.3    75.4    -      -       +      +
     35D  ASN*     1.3    57.3    +      -       -      +
     37D  LEU*     3.6     7.6    +      -       +      +
     38D  CYS*     3.1    25.8    +      -       -      +
    136D  PHE*     4.9     5.6    -      -       +      -
    138D  ILE*     4.4    18.8    -      -       +      -
    161D  ALA*     4.8     4.3    -      -       +      -
    175D  LEU*     4.1    26.9    -      -       +      -
    177D  MET*     4.3    16.6    -      -       -      -
    338D  AMP      4.2    16.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 35 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14B  THR*     3.7    30.5    -      -       +      +
     15B  ARG*     5.6     4.0    -      -       +      +
     18B  MET*     4.5     3.1    -      -       -      +
     14D  THR*     4.5    14.6    +      -       -      +
     17D  VAL*     3.8    19.4    -      -       -      +
     31D  THR*     3.0    33.2    +      -       -      +
     32D  GLN*     3.4    23.2    +      -       -      +
     34D  LEU*     1.3    75.1    -      -       -      +
     36D  SER*     1.3    63.8    +      -       -      +
     38D  CYS*     3.4     8.3    +      -       -      +
     39D  THR*     3.2    24.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 36 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  ARG*     3.1    22.5    +      -       -      +
     32D  GLN      2.7    17.1    +      -       -      -
     33D  LEU      3.2     8.1    -      -       -      -
     35D  ASN*     1.3    72.7    -      -       -      +
     37D  LEU*     1.3    66.0    +      -       -      +
     39D  THR*     3.3     5.2    +      -       -      -
     40D  ALA*     3.0    21.5    +      -       -      +
     84D  MET*     3.5    40.1    -      -       -      +
     85D  LEU*     4.7     2.9    -      -       -      -
     88D  SER*     3.2    13.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 37 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33D  LEU*     3.0    30.9    +      -       +      +
     34D  LEU*     3.6    10.5    -      -       +      +
     36D  SER*     1.3    74.4    -      -       -      +
     38D  CYS*     1.3    64.7    +      -       -      +
     40D  ALA*     3.1    10.1    +      -       +      +
     41D  VAL*     2.9    38.3    +      -       +      +
     81D  VAL*     4.3    25.6    -      -       +      -
     85D  LEU*     4.4    12.3    -      -       +      +
    115D  VAL*     5.4     2.5    -      -       +      -
    117D  PHE*     6.4     0.2    -      -       +      -
    134D  THR*     5.6     3.6    -      -       +      -
    136D  PHE*     3.6    53.2    -      -       +      -
    138D  ILE*     4.5     2.0    -      -       +      -
    173D  LEU*     5.9     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 38 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13D  LEU*     3.5    34.3    -      -       +      -
     14D  THR*     5.2     8.1    -      -       -      -
     34D  LEU      3.1    14.9    +      -       -      +
     35D  ASN*     3.4    13.5    -      -       -      +
     37D  LEU*     1.3    73.5    -      -       -      +
     39D  THR*     1.3    65.2    +      -       -      +
     41D  VAL*     3.2     7.4    +      -       -      +
     42D  LYS*     3.0    35.9    +      -       -      +
    173D  LEU*     4.8     5.4    -      -       -      -
    193D  PHE*     3.6    17.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 39 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ILE*     4.4    17.3    -      -       +      -
     12B  THR*     4.1    10.7    +      -       +      +
     14B  THR*     6.2     0.2    -      -       -      -
    190B  ILE*     4.5     3.7    -      -       +      +
    192B  GLU*     3.1    42.1    +      -       +      +
    194B  ILE*     6.2     0.2    -      -       +      -
     35D  ASN      3.2    12.2    +      -       -      -
     36D  SER*     3.5     8.7    -      -       -      -
     37D  LEU      3.2     0.2    -      -       -      -
     38D  CYS*     1.3    77.5    -      -       -      +
     40D  ALA*     1.3    58.1    +      -       -      +
     42D  LYS*     2.9    24.2    +      -       -      +
     43D  ALA*     2.9    11.8    +      -       -      +
     84D  MET*     3.8    21.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 40 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36D  SER      3.0    13.7    +      -       -      +
     37D  LEU*     3.1    13.2    +      -       +      +
     39D  THR*     1.3    75.3    -      -       -      +
     41D  VAL*     1.3    56.8    +      -       +      +
     43D  ALA*     3.2     8.4    +      -       -      +
     44D  ILE*     3.0    36.8    +      -       -      +
     80D  LEU*     4.1    11.4    -      -       -      +
     81D  VAL*     4.0    32.5    -      -       +      +
     84D  MET*     4.1    10.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 41 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37D  LEU*     2.9    30.8    +      -       +      +
     38D  CYS      3.6     7.6    -      -       -      +
     39D  THR      3.2     0.2    -      -       -      -
     40D  ALA*     1.3    75.6    -      -       +      +
     42D  LYS*     1.3    57.6    +      -       -      +
     44D  ILE*     3.6     2.2    +      -       +      -
     45D  SER*     3.0    26.3    +      -       -      -
     81D  VAL*     6.3     0.2    -      -       +      -
    134D  THR*     4.8    10.5    -      -       +      -
    136D  PHE*     5.7     4.9    -      -       +      -
    165D  ALA*     3.6    29.6    -      -       +      -
    167D  TYR*     3.7    20.6    -      -       +      +
    171D  THR*     4.8     2.2    -      -       +      -
    173D  LEU*     4.2    12.8    -      -       +      -
    193D  PHE*     3.8    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 42 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  LYS*     4.3     2.4    -      -       -      +
    189B  ALA      5.0     0.2    -      -       -      +
    190B  ILE*     3.3    28.0    +      -       +      +
    191B  GLY      3.0    23.0    +      -       -      -
    192B  GLU*     2.8    30.3    +      -       -      -
     38D  CYS*     3.0    22.0    +      -       -      +
     39D  THR*     2.9    14.3    +      -       -      +
     41D  VAL*     1.3    72.7    -      -       -      +
     43D  ALA*     1.3    64.7    +      -       -      +
     45D  SER*     3.5     6.6    +      -       -      +
     46D  SER*     3.3    21.3    +      -       -      -
    186D  LEU*     3.8    22.0    -      -       +      +
    191D  GLY*     3.2    20.6    +      -       -      +
    193D  PHE*     3.7    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 43 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  HIS*     5.4     7.0    +      -       -      +
     59A  ILE*     3.6    32.3    -      -       +      -
    190B  ILE*     3.9    14.9    -      -       +      +
     39D  THR      2.9     8.7    +      -       -      +
     40D  ALA*     3.5     9.0    -      -       -      +
     42D  LYS*     1.3    73.4    -      -       -      +
     44D  ILE*     1.3    65.2    +      -       -      +
     46D  SER*     3.4     6.6    +      -       -      -
     47D  ALA*     3.3    19.2    +      -       -      +
     80D  LEU*     3.7    18.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 44 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40D  ALA      3.0    23.6    +      -       -      +
     41D  VAL*     3.8     5.6    -      -       +      +
     43D  ALA*     1.3    73.4    -      -       -      +
     45D  SER*     1.3    67.1    +      -       -      +
     47D  ALA*     3.0     7.8    +      -       +      +
     48D  VAL*     2.9    35.1    +      -       +      +
     77D  SER*     3.9    24.7    -      -       -      +
     80D  LEU*     3.9    18.4    -      -       +      +
     81D  VAL*     4.0    25.4    -      -       +      -
    119D  PRO      4.1     5.6    -      -       -      +
    120D  LEU*     4.3     3.8    -      -       +      -
    134D  THR*     3.8    17.9    -      -       +      +
    167D  TYR*     3.6    22.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 45 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41D  VAL      3.0    18.3    +      -       -      -
     42D  LYS*     3.9     5.6    -      -       -      -
     43D  ALA      3.4     0.2    -      -       -      -
     44D  ILE*     1.3    73.3    -      -       -      +
     46D  SER*     1.3    64.2    +      -       -      +
     48D  VAL*     3.4     1.7    +      -       -      -
     49D  ARG*     3.0    38.5    +      -       -      -
    167D  TYR*     3.7    19.8    -      -       -      -
    171D  THR*     2.7    32.2    +      -       -      -
    186D  LEU*     4.2    11.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 46 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    189B  ALA*     3.9    30.6    +      -       -      +
    190B  ILE*     4.1     6.5    -      -       -      +
     42D  LYS      3.3    10.7    +      -       -      -
     43D  ALA      3.5    10.8    -      -       -      -
     44D  ILE      3.2     0.4    -      -       -      -
     45D  SER*     1.3    79.3    -      -       -      +
     47D  ALA*     1.3    64.0    +      -       -      +
     49D  ARG*     3.2    10.5    +      -       -      +
     50D  LYS      3.3     0.2    +      -       -      -
     51D  ALA*     3.3    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 47 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  HIS*     6.2     1.6    -      -       -      +
     43D  ALA      3.3     8.6    +      -       -      +
     44D  ILE*     3.0    12.0    +      -       -      +
     46D  SER*     1.3    81.1    -      -       -      +
     48D  VAL*     1.3    62.3    +      -       -      +
     50D  LYS*     3.1    20.8    +      -       -      +
     51D  ALA      5.0     5.8    -      -       -      +
     73D  LEU*     4.1    20.7    -      -       +      +
     76D  LEU*     4.3    20.0    -      -       +      -
     80D  LEU*     5.5     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 48 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169C  SER*     3.1    39.1    +      -       -      +
    170C  ALA*     3.8     1.2    -      -       -      +
     44D  ILE*     2.9    38.4    +      -       +      +
     45D  SER*     3.8     6.7    -      -       -      +
     47D  ALA*     1.3    74.0    -      -       -      +
     49D  ARG*     1.3    58.5    +      -       -      +
     50D  LYS*     3.0    22.2    +      -       -      +
     73D  LEU*     4.4    18.2    -      -       +      +
    120D  LEU*     4.1    15.9    -      -       +      -
    126D  ILE*     4.5     5.6    -      -       +      +
    132D  VAL*     3.8    14.8    -      -       +      -
    167D  TYR*     4.0    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 49 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49C  ARG*     3.6    32.7    +      -       +      +
    168C  GLY      3.3     8.5    +      -       -      -
    169C  SER*     3.3    25.7    +      -       -      +
    170C  ALA*     3.9     8.1    -      -       -      +
    171C  THR      4.9     0.7    +      -       -      -
    186C  LEU      3.9     2.9    -      -       -      +
    188C  PRO*     3.5    22.4    -      -       +      +
     45D  SER*     3.0    40.6    +      -       -      +
     46D  SER*     3.7     5.6    -      -       -      +
     47D  ALA      3.2     0.4    -      -       -      -
     48D  VAL*     1.3    79.5    -      -       -      +
     50D  LYS*     1.3    67.6    +      -       -      +
     51D  ALA      3.4     1.1    -      -       -      -
    167D  TYR*     3.9    10.1    +      -       -      +
    168D  GLY      2.9    29.5    +      -       -      +
    169D  SER      3.6     4.6    +      -       -      -
    170D  ALA*     3.3    21.4    +      -       -      +
    171D  THR*     3.2    17.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 50 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170C  ALA*     4.0     9.6    -      -       +      -
    185C  MET*     3.9    34.9    -      -       +      +
    186C  LEU      4.1     2.0    -      -       -      +
    187C  ASP*     3.8     2.4    -      -       -      +
    188C  PRO*     3.8     3.7    -      -       -      +
     46D  SER      3.3     0.2    +      -       -      -
     47D  ALA      3.1    14.1    +      -       -      +
     48D  VAL      3.0    28.0    +      -       -      +
     49D  ARG*     1.3    77.9    -      -       -      +
     51D  ALA*     1.3    66.6    +      -       -      +
     52D  GLY      2.9     4.2    +      -       -      -
     53D  ILE*     3.1    47.4    +      -       +      +
     56D  LEU*     5.9     1.8    -      -       -      +
     71D  LYS*     5.7     6.2    -      -       -      +
     73D  LEU*     4.7    17.2    -      -       -      +
    126D  ILE*     5.8     6.5    -      -       -      -
    129D  LEU*     5.4     4.5    -      -       -      -
----------------------------------------------------------
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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