Contacts of the helix formed by residues 236 - 258 (chain A) in PDB entry 1RRM


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 ASP 236 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190A  LYS*     5.6     0.9    +      -       -      -
    231A  GLY*     2.9    20.8    +      -       -      +
    232A  SER*     4.1     3.3    +      -       -      -
    234A  ALA*     3.6     2.1    -      -       +      +
    235A  GLY*     1.3    77.5    -      -       -      +
    237A  LYS*     1.3    65.3    +      -       -      +
    238A  ASP*     3.2    13.5    +      -       -      +
    239A  ALA*     2.9    33.6    +      -       +      +
    240A  GLY*     3.2    17.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 237 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  ARG*     2.9    42.2    +      -       -      +
    183A  ASP*     5.3     4.5    -      -       -      +
    235A  GLY      3.3     6.5    +      -       -      +
    236A  ASP*     1.3    71.8    +      -       -      +
    238A  ASP*     1.3    70.3    +      -       -      +
    240A  GLY      3.1     7.8    +      -       -      -
    241A  GLU      3.1     4.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 238 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  ARG*     5.6     1.4    +      -       -      -
    236A  ASP*     3.2    10.7    +      -       -      +
    237A  LYS*     1.3    80.7    -      -       -      +
    239A  ALA*     1.3    57.0    +      -       -      +
    241A  GLU*     3.1    17.9    +      -       -      +
    242A  GLU*     2.9    41.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 239 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228A  ALA*     3.5    19.5    -      -       +      +
    231A  GLY*     3.6     8.3    -      -       -      -
    232A  SER*     3.3    29.4    -      -       -      +
    236A  ASP*     2.9    18.8    +      -       +      +
    237A  LYS      3.2     0.2    -      -       -      -
    238A  ASP*     1.3    76.7    -      -       -      +
    240A  GLY*     1.3    58.8    +      -       -      +
    242A  GLU*     3.2     7.7    +      -       -      +
    243A  MSE      2.9    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 240 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  ARG*     4.5     4.3    -      -       -      -
    179A  ALA*     4.0     8.8    -      -       -      +
    182A  MSE      4.9     2.9    -      -       -      +
    183A  ASP*     5.3     2.7    -      -       -      -
    190A  LYS*     6.3     0.2    -      -       -      -
    232A  SER*     3.6    16.6    +      -       -      -
    236A  ASP      3.2    10.0    +      -       -      -
    237A  LYS      3.1     8.6    +      -       -      -
    239A  ALA*     1.3    78.3    -      -       -      +
    241A  GLU*     1.3    55.5    +      -       -      +
    243A  MSE      3.3     4.7    +      -       -      +
    244A  ALA*     3.0    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 241 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15A  GLY*     3.7    10.8    -      -       -      -
     16A  ARG*     3.2    47.3    +      -       +      +
    179A  ALA*     3.8    12.5    -      -       +      +
    237A  LYS      3.1    11.0    +      -       -      +
    238A  ASP*     3.1    19.8    +      -       -      +
    240A  GLY*     1.3    72.3    -      -       -      +
    242A  GLU*     1.3    65.1    +      -       +      +
    244A  ALA*     3.3     4.3    +      -       +      +
    245A  LEU*     3.3    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 242 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224A  ILE*     3.3    20.6    -      -       +      +
    227A  GLY      4.8     3.3    -      -       -      +
    228A  ALA*     3.3    24.6    +      -       +      +
    238A  ASP*     2.9    27.0    +      -       -      +
    239A  ALA*     3.5    11.1    -      -       -      +
    241A  GLU*     1.3    79.1    -      -       +      +
    243A  MSE      1.3    57.3    +      -       -      +
    245A  LEU*     3.1     7.3    +      -       -      +
    246A  GLY      2.9    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with MSE 243 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  ALA*     3.8    22.6    -      -       +      +
    190A  LYS      5.4     0.2    -      -       -      +
    194A  GLY*     3.6    31.4    -      -       -      +
    197A  ALA*     4.8     3.4    -      -       +      -
    225A  ILE*     3.8    36.6    -      -       +      +
    228A  ALA*     4.2     5.2    -      -       +      -
    229A  LEU*     3.7    29.6    -      -       +      -
    232A  SER*     3.8    22.0    -      -       -      +
    239A  ALA      2.9    20.0    +      -       -      +
    240A  GLY*     3.6     7.6    -      -       -      +
    242A  GLU*     1.3    77.4    -      -       -      +
    244A  ALA*     1.3    61.3    +      -       -      +
    246A  GLY*     4.4     1.3    -      -       -      +
    247A  GLN*     3.0    29.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 244 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  ALA*     4.4     0.2    -      -       -      +
    177A  ILE*     3.4    22.9    -      -       +      +
    179A  ALA*     4.4     9.0    -      -       +      +
    182A  MSE      3.6    28.9    -      -       +      -
    240A  GLY      3.0    11.4    +      -       -      +
    241A  GLU*     3.5    13.5    -      -       +      +
    242A  GLU      3.2     0.2    -      -       -      -
    243A  MSE      1.3    76.6    -      -       -      +
    245A  LEU*     1.3    61.9    +      -       -      +
    247A  GLN*     3.1    29.0    +      -       -      +
    248A  TYR*     3.7     1.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 245 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  PHE*     4.0    27.1    -      -       +      -
    177A  ILE*     5.0     2.7    -      -       -      -
    224A  ILE*     4.4    15.9    -      -       +      -
    241A  GLU      3.3     8.1    +      -       -      +
    242A  GLU*     3.1    10.3    +      -       -      +
    244A  ALA*     1.3    78.5    -      -       -      +
    246A  GLY*     1.3    65.1    +      -       -      +
    248A  TYR*     3.1     6.1    +      -       -      +
    249A  VAL*     2.9    43.3    +      -       +      +
    211B  TRP*     4.2    18.4    -      -       +      -
    212B  ALA*     3.8    27.8    -      -       +      -
    213B  LEU*     4.4    13.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 246 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221A  ALA*     3.6    11.2    -      -       -      +
    224A  ILE*     3.7    31.4    -      -       -      +
    225A  ILE*     3.8    12.4    -      -       -      +
    242A  GLU      2.9    12.0    +      -       -      -
    243A  MSE      3.3     1.5    +      -       -      -
    245A  LEU*     1.3    77.1    -      -       -      +
    247A  GLN*     1.3    61.1    +      -       -      +
    249A  VAL*     3.4     2.0    +      -       -      -
    250A  ALA*     3.1    20.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 247 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139A  PRO*     4.8     0.4    -      -       -      +
    141A  THR      4.2     4.5    -      -       -      +
    142A  ALA*     3.8    17.7    -      -       -      +
    143A  GLY*     3.4    18.3    +      -       -      +
    144A  THR      3.8     0.2    +      -       -      -
    145A  ALA*     3.1    44.5    +      -       -      +
    147A  GLU*     2.9    24.6    +      -       -      +
    177A  ILE*     4.2     6.7    -      -       -      +
    182A  MSE      4.4     7.1    -      -       -      +
    197A  ALA*     3.7    29.8    -      -       +      -
    200A  HIS*     5.4     0.7    +      -       -      -
    225A  ILE*     4.3     2.2    -      -       -      +
    243A  MSE      3.0    22.1    +      -       +      +
    244A  ALA*     3.1    18.5    +      -       -      +
    246A  GLY*     1.3    76.2    -      -       -      +
    248A  TYR*     1.3    67.2    +      -       -      +
    250A  ALA*     3.5     4.6    -      -       -      +
    251A  GLY      3.4     7.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 248 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8A  LEU*     5.9     0.5    -      -       -      +
      9A  ASN*     2.5    38.1    +      -       -      +
     12A  ALA*     3.7    10.6    -      -       +      +
     14A  PHE*     3.4    32.5    -      +       +      -
    145A  ALA*     4.4     4.0    -      -       -      -
    147A  GLU*     3.4    26.5    -      -       +      -
    148A  VAL*     3.4    19.3    -      -       +      +
    177A  ILE*     3.7    19.1    -      -       +      -
    244A  ALA      3.7    10.5    -      -       -      +
    245A  LEU      3.1     9.5    +      -       -      +
    247A  GLN*     1.3    86.1    -      -       -      +
    249A  VAL*     1.3    70.0    +      -       +      +
    250A  ALA      3.1     1.6    -      -       -      -
    251A  GLY*     2.9    12.6    +      -       -      -
    252A  MSE      3.0    38.9    +      -       +      +
      8B  LEU*     6.1     1.3    -      -       +      +
    213B  LEU*     5.7     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 249 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    217A  LEU*     3.3    47.6    -      -       +      +
    220A  LYS*     4.8     7.6    -      -       +      -
    221A  ALA*     4.1     9.2    -      -       +      +
    224A  ILE*     4.8     6.1    -      -       +      -
    245A  LEU*     2.9    42.3    +      -       +      +
    246A  GLY*     3.8     6.1    -      -       -      +
    248A  TYR*     1.3    76.4    -      -       +      +
    250A  ALA*     1.3    63.9    +      -       -      +
    252A  MSE      3.2    25.4    +      -       -      +
    253A  GLY      3.5     3.3    +      -       -      -
    213B  LEU*     4.1    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 250 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197A  ALA*     4.0    20.9    -      -       -      +
    200A  HIS*     4.2     6.3    -      -       +      -
    201A  ALA*     4.1    11.4    -      -       +      +
    218A  HIS*     3.3    10.6    -      -       -      -
    221A  ALA*     3.7    16.5    -      -       +      +
    225A  ILE*     4.7     0.7    -      -       +      -
    246A  GLY      3.1    13.0    +      -       -      +
    247A  GLN*     3.5    13.0    -      -       -      +
    248A  TYR      3.1     0.4    -      -       -      -
    249A  VAL*     1.3    77.3    -      -       -      +
    251A  GLY*     1.3    61.8    +      -       -      +
    253A  GLY      3.1     3.5    +      -       -      -
    254A  PHE*     3.1    25.4    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 251 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  ALA*     3.7    13.2    -      -       -      -
    148A  VAL*     3.9     8.6    -      -       -      +
    149A  THR*     4.1     1.3    -      -       -      -
    247A  GLN      3.4     4.2    +      -       -      -
    248A  TYR      2.9     8.6    +      -       -      -
    250A  ALA*     1.3    76.1    -      -       -      +
    252A  MSE      1.3    61.7    +      -       -      +
    253A  GLY      2.9     5.9    +      -       -      -
    254A  PHE*     3.5    20.4    -      -       -      -
    255A  SER*     3.2    28.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with MSE 252 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      6A  MSE      3.5    12.6    -      -       -      +
      8A  LEU*     3.9    28.4    -      -       +      +
    148A  VAL*     4.0     5.6    -      -       +      +
    217A  LEU*     4.0    26.5    -      -       +      -
    248A  TYR*     3.0    47.6    +      -       +      +
    249A  VAL*     3.2    22.4    +      -       -      +
    251A  GLY*     1.3    75.6    -      -       -      +
    253A  GLY*     1.3    57.8    +      -       -      +
    256A  ASN*     2.9    22.9    -      -       -      +
      6B  MSE      5.9     0.9    -      -       +      -
      8B  LEU*     4.0    26.0    -      -       +      -
    213B  LEU*     4.8    15.9    -      -       +      -
    217B  LEU*     5.8     2.7    -      -       +      -
    252B  MSE      4.2    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 253 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214A  THR*     3.8    15.0    -      -       -      +
    217A  LEU*     4.2     7.6    -      -       -      +
    218A  HIS*     3.3    18.2    -      -       -      -
    249A  VAL      3.5     3.5    +      -       -      -
    250A  ALA      3.1     6.1    +      -       -      -
    251A  GLY      2.9     1.8    -      -       -      -
    252A  MSE      1.3    78.8    -      -       -      +
    254A  PHE*     1.3    63.8    +      -       -      +
    255A  SER      3.2     2.0    -      -       -      -
    256A  ASN*     3.0    16.1    +      -       -      +
    257A  VAL*     3.3    12.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 254 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144A  THR      3.9     4.3    -      -       -      -
    145A  ALA*     4.3     2.7    -      -       +      -
    149A  THR*     3.6    18.6    -      -       +      -
    151A  ASN*     4.3     5.6    -      -       -      +
    200A  HIS*     3.4    47.6    -      +       +      +
    218A  HIS*     2.9    22.3    -      -       +      -
    250A  ALA      3.1    23.6    +      -       -      -
    251A  GLY*     3.5    19.7    -      -       -      -
    253A  GLY*     1.3    68.2    -      -       -      -
    255A  SER*     1.3    63.4    +      -       -      +
    257A  VAL*     3.8     5.8    -      -       -      -
    258A  GLY*     2.8    31.3    +      -       -      +
    259A  LEU*     3.6    37.0    -      -       +      -
    390A  PGO      3.6    31.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 255 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7A  ILE      4.9     1.1    +      -       -      -
    148A  VAL      4.1     3.3    +      -       -      -
    149A  THR*     3.2    24.0    -      -       -      -
    150A  ILE*     2.9    49.2    +      -       -      +
    151A  ASN*     4.5     8.7    +      -       -      +
    166A  VAL*     5.6     0.7    -      -       -      +
    251A  GLY      3.2    19.3    +      -       -      -
    252A  MSE      5.4     0.2    -      -       -      -
    253A  GLY      3.2     0.2    +      -       -      -
    254A  PHE*     1.3    86.3    -      -       -      +
    256A  ASN*     1.3    66.5    +      -       -      +
    257A  VAL      3.9     0.3    +      -       -      -
    258A  GLY      4.9     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 256 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5A  ARG*     3.7    15.7    +      -       -      +
      6A  MSE      3.4    27.4    -      -       -      +
      7A  ILE*     2.7    56.4    +      -       -      +
    150A  ILE*     5.3     2.8    -      -       -      +
    211A  TRP*     5.4     0.6    +      -       -      +
    214A  THR*     4.7     1.6    -      -       +      -
    252A  MSE      2.9    22.3    -      -       -      +
    253A  GLY      3.0     8.3    +      -       -      +
    255A  SER*     1.3    86.9    +      -       -      +
    257A  VAL*     1.3    62.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 257 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4A  ASN*     5.9     0.2    -      -       -      +
    204A  GLY      4.0     2.5    -      -       -      +
    207A  THR*     3.7    28.8    +      -       +      +
    209A  GLY*     3.4    32.2    +      -       -      +
    210A  ALA*     4.8     0.2    -      -       -      -
    211A  TRP*     3.8     9.4    -      -       +      +
    214A  THR*     3.5    29.2    -      -       +      +
    218A  HIS*     3.9    12.6    -      -       -      +
    253A  GLY      3.3    15.0    -      -       -      +
    254A  PHE*     3.9     7.2    -      -       -      -
    256A  ASN*     1.3    82.6    -      -       -      +
    258A  GLY*     1.3    63.6    +      -       -      +
    365A  GLY*     5.8     1.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 258 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204A  GLY*     3.5    22.5    -      -       -      -
    207A  THR*     3.6     8.9    -      -       -      +
    254A  PHE*     2.8    21.7    +      -       -      +
    255A  SER      4.8     0.8    +      -       -      -
    257A  VAL*     1.3    75.0    -      -       -      +
    259A  LEU*     1.3    69.7    +      -       -      +
    365A  GLY*     5.8     1.8    -      -       -      -
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il