Contacts of the helix formed by residues 143 - 166 (chain M) in PDB entry 5PRC


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with HIS 143 (chain M).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192L  GLY*     3.5    20.4    -      -       -      +
    195L  LEU*     3.5    42.1    -      -       +      +
    196L  SER*     3.3    16.0    -      -       -      -
    199L  ASN      3.6    18.2    -      -       -      -
    141M  GLY*     3.4     8.7    +      -       -      -
    142M  THR*     1.3    76.5    -      -       -      +
    144M  ILE*     1.3    63.0    +      -       -      +
    146M  TRP*     3.2     5.1    +      -       -      -
    147M  ASN      3.0    11.8    +      -       -      -
    265M  ARG*     5.0     0.9    -      -       -      -
    268M  TRP*     2.9    38.4    +      +       -      +
    802M  SO4      3.0    34.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 144 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188L  GLY      5.6     0.7    -      -       -      -
    189L  LEU*     3.7    31.0    -      -       +      +
    192L  GLY*     3.6    21.3    -      -       -      +
    193L  LEU*     3.9    13.2    -      -       +      +
    196L  SER*     5.2     3.8    -      -       -      +
    215L  TYR*     3.7    33.7    -      -       +      +
    216L  PHE*     3.8    12.1    -      -       +      -
    131M  VAL*     3.9     9.6    -      -       +      +
    142M  THR      3.2     1.0    -      -       -      -
    143M  HIS*     1.3    71.7    -      -       -      +
    145M  ALA*     1.3    66.6    +      -       -      +
    147M  ASN*     2.9    19.2    +      -       -      +
    148M  PHE*     2.9    11.3    +      -       -      +
    401M  BPB      3.5    26.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 145 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128M  TRP*     2.8    33.9    +      -       +      +
    131M  VAL*     3.9    11.7    +      -       +      +
    132M  TYR*     3.6    47.3    -      -       +      +
    142M  THR*     3.0    12.6    +      -       -      +
    144M  ILE*     1.3    77.5    -      -       -      +
    146M  TRP*     1.3    59.0    +      -       +      +
    148M  PHE*     3.2     2.2    +      -       -      +
    149M  ALA      3.0    14.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 146 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128M  TRP*     4.0    28.3    -      +       -      -
    132M  TYR*     4.4     8.3    -      +       -      -
    142M  THR*     3.0    44.4    +      -       -      -
    143M  HIS*     3.6     8.3    -      -       -      +
    144M  ILE      3.0     0.4    -      -       -      -
    145M  ALA*     1.3    77.2    -      -       -      +
    147M  ASN*     1.3    62.8    +      -       -      +
    149M  ALA*     3.2    39.0    +      -       +      +
    150M  ALA*     3.5     3.5    +      -       -      +
    268M  TRP*     3.9    17.5    -      -       +      -
    272M  LEU*     4.2     6.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 147 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188L  GLY*     3.9     7.6    -      -       -      +
    143M  HIS      3.0     4.6    +      -       -      +
    144M  ILE*     2.9     9.1    +      -       -      +
    146M  TRP*     1.3    73.7    -      -       -      +
    148M  PHE*     1.3    61.6    +      -       -      +
    150M  ALA*     3.4    14.0    +      -       -      +
    151M  ALA*     3.5     9.0    +      -       -      +
    268M  TRP*     3.4    43.1    +      -       +      +
    271M  SER*     3.3    27.8    +      -       -      -
    272M  LEU*     3.5    18.9    +      -       -      +
    275M  MET*     5.4     1.1    -      -       -      +
    401M  BPB      3.3    34.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 148 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124M  LEU*     4.8     1.6    -      -       +      -
    127M  TRP*     3.5    21.3    -      +       +      -
    128M  TRP*     3.7    27.1    -      +       -      -
    131M  VAL*     4.1     6.1    -      -       +      -
    144M  ILE      2.9    10.9    +      -       -      +
    145M  ALA*     3.4    10.3    -      -       -      +
    147M  ASN*     1.3    75.6    -      -       -      +
    149M  ALA*     1.3    59.5    +      -       -      +
    151M  ALA*     3.1     5.8    +      -       +      -
    152M  ILE*     2.8    44.1    +      -       +      +
    401M  BPB      3.4    80.3    -      +       +      +
    806M  BCB      3.5    24.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 149 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128M  TRP*     3.9    14.8    -      -       +      +
    145M  ALA      3.0    12.3    +      -       -      +
    146M  TRP*     3.3    34.1    -      -       +      +
    148M  PHE*     1.3    75.9    -      -       -      +
    150M  ALA*     1.3    52.7    +      -       -      +
    152M  ILE*     3.2     6.9    +      -       -      +
    153M  PHE*     2.7    35.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 150 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146M  TRP      3.5     2.5    +      -       -      +
    147M  ASN      3.4    11.1    +      -       -      +
    148M  PHE      3.1     0.4    -      -       -      -
    149M  ALA*     1.3    77.9    -      -       -      +
    151M  ALA*     1.3    63.7    +      -       -      +
    153M  PHE*     3.1     8.4    +      -       -      +
    154M  PHE*     3.0    23.0    +      -       -      +
    272M  LEU*     3.7    24.2    -      -       +      -
    275M  MET*     3.8    18.4    -      -       +      +
    276M  VAL*     4.3    13.5    -      -       +      +
    279M  SER*     4.5     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 151 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147M  ASN      3.5     6.8    +      -       -      +
    148M  PHE*     3.1    14.5    +      -       +      +
    150M  ALA*     1.3    75.5    -      -       -      +
    152M  ILE*     1.3    64.7    +      -       -      +
    154M  PHE*     3.0    14.2    +      -       -      +
    155M  VAL*     3.3    13.2    +      -       -      +
    275M  MET*     3.6    19.8    -      -       +      +
    401M  BPB      4.0    29.4    -      -       +      -
    806M  BCB      4.0    18.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 152 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121M  THR*     6.0     0.4    -      -       +      +
    124M  LEU*     3.8    35.9    -      -       +      +
    125M  GLY*     5.4     1.3    -      -       -      +
    128M  TRP*     3.9    22.7    -      -       +      -
    148M  PHE*     2.8    53.2    +      -       +      +
    149M  ALA*     3.6     7.6    -      -       -      +
    151M  ALA*     1.3    70.1    -      -       -      +
    153M  PHE*     1.3    64.2    +      -       -      +
    155M  VAL*     3.2     7.1    +      -       -      +
    156M  LEU*     3.0    35.6    +      -       +      +
    806M  BCB      4.0    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 153 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149M  ALA      2.7    20.1    +      -       -      +
    150M  ALA*     3.1     9.4    +      -       -      +
    152M  ILE*     1.3    75.7    -      -       -      +
    154M  PHE*     1.3    56.9    -      -       -      +
    156M  LEU*     3.2    12.8    +      -       +      +
    157M  CYS*     2.9    47.1    +      -       -      -
    161M  ILE*     3.6    25.6    -      -       +      -
    279M  SER*     3.8    20.9    -      -       -      -
    283M  LEU*     4.4    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 154 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150M  ALA      3.0    11.6    +      -       -      +
    151M  ALA      3.0     9.2    +      -       -      +
    153M  PHE*     1.3    75.8    -      -       -      +
    155M  VAL*     1.3    55.0    +      -       -      +
    157M  CYS*     2.7    25.1    +      -       +      +
    158M  ILE*     3.0    42.6    +      -       +      +
    275M  MET*     3.6    28.7    -      -       +      +
    278M  ALA*     3.9    13.0    -      -       +      -
    279M  SER*     3.7    29.3    +      -       -      +
    282M  ILE*     3.9    11.4    -      -       +      -
    805M  BCB      3.9     5.2    -      -       +      -
    806M  BCB      3.5    68.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with VAL 155 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120M  MET*     4.6     6.7    -      -       -      -
    124M  LEU*     4.3    17.7    -      -       +      -
    151M  ALA      3.7     4.7    -      -       -      +
    152M  ILE      3.4     7.4    -      -       -      +
    154M  PHE*     1.3    76.8    -      -       -      +
    156M  LEU*     1.3    60.8    +      -       +      +
    158M  ILE*     3.6    10.3    -      -       -      +
    159M  GLY*     2.8    29.5    +      -       -      -
    600M  NS5      4.3    31.9    -      -       +      +
    805M  BCB      3.6    26.9    -      -       +      +
    806M  BCB      3.6    32.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 156 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121M  THR*     4.4    28.7    -      -       +      +
    124M  LEU*     5.4     2.7    -      -       +      -
    152M  ILE*     3.0    31.8    +      -       +      +
    153M  PHE*     3.2    19.1    -      -       +      +
    155M  VAL*     1.3    83.8    -      -       +      +
    157M  CYS*     1.3    57.5    +      -       -      +
    160M  CYS*     2.8    40.1    +      -       +      +
    161M  ILE*     2.9    32.8    +      -       +      +
    600M  NS5      5.3     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 157 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153M  PHE*     2.9    54.5    +      -       -      -
    154M  PHE*     2.7    18.2    +      -       +      +
    156M  LEU*     1.3    71.6    -      -       -      +
    158M  ILE*     1.3    60.1    +      -       -      +
    161M  ILE*     3.4    10.8    +      -       -      -
    162M  HIS*     2.8    31.8    +      -       -      +
    279M  SER*     3.7    21.3    -      -       -      -
    282M  ILE*     4.0    20.4    -      -       +      -
    283M  LEU*     4.3     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 158 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154M  PHE*     3.0    48.1    +      -       +      +
    155M  VAL*     3.6    13.9    -      -       -      +
    157M  CYS*     1.3    79.5    -      -       -      +
    159M  GLY*     1.3    62.8    +      -       -      +
    162M  HIS*     4.9     3.6    -      -       -      +
    163M  PRO*     4.1     5.9    -      -       -      +
    171M  GLU      4.6     2.3    -      -       -      +
    172M  GLY*     4.0    10.6    -      -       -      -
    173M  VAL*     3.7    20.8    -      -       +      +
    183M  TRP*     4.0    17.0    -      -       +      -
    282M  ILE*     3.6    24.5    -      -       +      -
    600M  NS5      4.4     9.6    -      -       +      -
    805M  BCB      3.8    31.6    -      -       +      -
    806M  BCB      3.9     7.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 159 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113M  TRP*     3.5    24.3    -      -       -      -
    155M  VAL      2.8    18.5    +      -       -      -
    158M  ILE*     1.3    80.4    -      -       -      +
    160M  CYS*     1.3    56.6    +      -       -      +
    163M  PRO*     3.8     8.6    -      -       -      +
    169M  TRP*     4.2     2.4    -      -       -      -
    173M  VAL*     4.9     2.5    -      -       -      -
    600M  NS5      3.6    34.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 160 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156M  LEU*     2.8    26.3    +      -       +      +
    159M  GLY*     1.3    74.3    -      -       -      +
    161M  ILE*     1.3    72.1    +      -       +      +
    163M  PRO*     3.0     9.0    -      -       -      +
    164M  THR*     2.9    29.6    +      -       -      +
    169M  TRP*     4.3     7.4    -      -       +      -
    600M  NS5      2.9    67.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 161 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153M  PHE*     3.6    33.0    -      -       +      -
    156M  LEU*     2.9    39.6    +      -       +      +
    157M  CYS*     4.0     7.6    -      -       -      +
    160M  CYS*     1.3    77.7    -      -       +      +
    162M  HIS*     1.3    60.4    +      -       -      +
    164M  THR*     3.0     9.5    +      -       +      -
    165M  LEU*     2.8    37.8    +      -       +      +
    283M  LEU*     4.1    20.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 162 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157M  CYS*     2.8    24.2    +      -       -      +
    158M  ILE*     4.9     4.7    -      -       -      -
    161M  ILE*     1.3    73.0    -      -       -      +
    163M  PRO*     1.3    68.5    -      -       +      +
    165M  LEU*     3.4    10.3    +      -       -      +
    166M  VAL*     3.1    36.9    +      -       +      +
    171M  GLU*     2.8    31.3    +      -       +      +
    187M  PHE*     3.4    25.6    -      +       -      -
    191M  TYR*     3.5    19.1    -      +       -      -
    282M  ILE*     3.5    25.9    +      -       +      +
    283M  LEU*     5.4     1.3    -      -       -      +
    285M  THR      3.2    27.0    +      -       -      -
    287M  THR*     5.1     1.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 163 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102M  MET*     3.8     2.9    -      -       -      +
    157M  CYS      3.9     3.8    -      -       -      +
    158M  ILE      4.1     3.8    -      -       -      +
    159M  GLY      3.8    13.2    -      -       -      +
    160M  CYS      3.0    19.3    -      -       -      +
    162M  HIS*     1.3    97.2    -      -       +      +
    164M  THR*     1.3    51.6    +      -       -      +
    166M  VAL*     3.5     4.0    -      -       +      +
    167M  GLY*     2.7    29.3    +      -       -      -
    168M  SER      2.8    34.0    +      -       -      +
    169M  TRP*     4.1    15.5    -      -       +      -
    171M  GLU*     4.2     5.2    -      -       +      -
    172M  GLY*     4.0    22.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 164 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102M  MET*     3.4    31.6    -      -       +      +
    160M  CYS*     2.9    17.3    +      -       -      +
    161M  ILE*     3.3    11.3    -      -       -      -
    163M  PRO*     1.3    77.9    -      -       -      +
    165M  LEU*     1.3    65.3    +      -       +      +
    167M  GLY*     3.1    12.6    +      -       -      -
    169M  TRP*     4.2     6.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 165 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216C  ARG*     3.7    17.1    +      -       -      -
    161M  ILE*     2.8    32.1    +      -       +      +
    162M  HIS*     3.7     8.1    -      -       -      +
    163M  PRO      3.3     0.2    -      -       -      -
    164M  THR*     1.3    78.2    -      -       +      +
    166M  VAL*     1.3    60.4    +      -       +      +
    167M  GLY*     4.5     0.2    -      -       -      -
    282M  ILE      5.6     0.2    -      -       -      +
    283M  LEU*     3.7    36.8    -      -       +      +
    287M  THR*     3.9    33.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 166 (chain M). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216C  ARG*     3.3    18.9    -      -       -      +
    217C  GLY      2.9    21.5    +      -       -      -
    220C  ARG*     3.4    26.0    -      -       -      +
    162M  HIS*     3.1    44.9    -      -       +      +
    163M  PRO*     3.5    10.1    -      -       +      +
    165M  LEU*     1.3    77.0    -      -       -      +
    167M  GLY*     1.3    59.7    +      -       -      +
    168M  SER      3.5     5.6    -      -       -      +
    171M  GLU*     4.1    12.6    -      -       +      -
    286M  GLY*     3.7    29.6    -      -       -      +
    287M  THR*     3.9     3.4    -      -       -      +
----------------------------------------------------------
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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