Contacts of the helix formed by residues 299 - 321 (chain F) in PDB entry 3ZXR


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 SER 299 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288F  LEU      2.6    28.4    +      -       -      -
    289F  MET      2.7    17.0    +      -       -      -
    290F  TYR      3.7    12.1    -      -       -      -
    291F  ASP*     3.5    13.8    -      -       -      +
    298F  LEU*     1.3    76.6    -      -       -      +
    300F  ASP*     1.3    60.0    +      -       -      +
    301F  THR*     3.4     4.9    +      -       -      -
    302F  ALA*     3.2    14.6    +      -       -      +
    303F  ARG*     2.9    28.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 300 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291F  ASP*     5.1     4.9    +      -       -      +
    299F  SER*     1.3    74.0    -      -       -      +
    301F  THR*     1.3    59.2    +      -       -      +
    303F  ARG*     2.8    41.1    +      -       -      +
    304F  HIS*     2.8    49.5    +      -       +      -
----------------------------------------------------------
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Residues in contact with THR 301 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124F  ILE*     4.6     6.7    -      -       +      -
    281F  LEU*     4.6    10.8    -      -       +      -
    288F  LEU*     4.1    22.7    +      -       +      +
    289F  MET*     5.4     2.2    -      -       -      -
    299F  SER*     3.3     8.3    +      -       -      -
    300F  ASP*     1.3    79.1    -      -       -      +
    302F  ALA*     1.3    56.7    +      -       -      +
    304F  HIS*     3.5     2.9    +      -       -      -
    305F  TYR*     2.9    27.9    +      -       -      +
    391F  ILE*     3.5    36.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 302 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288F  LEU      4.6     0.4    +      -       -      -
    289F  MET*     3.5    54.5    -      -       +      +
    298F  LEU*     3.8    17.7    -      -       +      -
    299F  SER*     3.2    10.2    +      -       -      +
    301F  THR*     1.3    78.6    -      -       -      +
    303F  ARG*     1.3    58.1    +      -       -      +
    305F  TYR*     3.0     5.1    +      -       -      +
    306F  ILE*     3.0    33.1    +      -       +      +
    365F  LEU*     4.5     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 303 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295F  TYR*     6.3     2.0    -      -       -      -
    298F  LEU*     4.7    12.4    +      -       +      +
    299F  SER      2.9    15.3    +      -       -      +
    300F  ASP*     2.8    39.6    +      -       -      +
    302F  ALA*     1.3    74.9    -      -       -      +
    304F  HIS*     1.3    64.7    +      -       -      +
    306F  ILE*     3.4    10.1    +      -       -      +
    307F  GLY      2.9    21.3    +      -       -      -
    342F  TYR*     4.0    19.3    -      -       +      +
    396F  GLU*     2.9    38.0    +      -       -      -
    397F  PRO*     3.4    31.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 304 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300F  ASP*     2.8    39.1    +      -       +      +
    301F  THR*     3.9     3.8    +      -       -      +
    303F  ARG*     1.3    77.9    +      -       -      +
    305F  TYR*     1.3    60.0    +      -       -      +
    307F  GLY*     3.2     1.6    +      -       -      -
    308F  GLY      3.0    22.9    +      -       -      -
    390F  GLY*     3.4    25.3    -      -       -      +
    391F  ILE*     3.8    13.6    +      -       +      +
    394F  LYS*     3.5    40.6    -      -       +      +
    395F  ILE      3.4    18.7    -      -       -      +
    396F  GLU*     2.8    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 305 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128F  ALA*     5.7     0.2    -      -       -      +
    130F  PHE*     4.4     3.1    -      -       -      -
    279F  GLN*     2.8    38.4    +      -       +      +
    280F  SER      6.4     0.4    -      -       -      -
    281F  LEU*     3.9    24.6    -      -       +      +
    289F  MET*     4.8     4.7    -      -       +      -
    301F  THR      2.9    15.1    +      -       -      +
    302F  ALA*     3.0    12.5    +      -       -      +
    304F  HIS*     1.3    72.6    -      -       -      +
    306F  ILE*     1.3    64.9    +      -       -      +
    308F  GLY*     3.1     3.8    +      -       -      -
    309F  LEU*     3.1    33.8    +      -       +      +
    365F  LEU*     3.5    22.0    -      -       +      -
    383F  MET      3.6     0.8    +      -       -      -
    384F  LEU*     3.5    33.4    -      -       +      +
    387F  GLY*     3.6    37.2    -      -       -      +
    388F  LEU*     4.4     0.4    -      -       +      -
    391F  ILE*     3.8    12.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 306 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298F  LEU*     3.7    19.3    -      -       +      -
    302F  ALA      3.0    18.0    +      -       -      +
    303F  ARG*     3.6     8.1    -      -       -      +
    305F  TYR*     1.3    74.3    -      -       -      +
    307F  GLY*     1.3    64.8    +      -       -      +
    309F  LEU*     3.1    10.1    +      -       -      +
    310F  LEU*     2.9    34.3    +      -       +      +
    342F  TYR*     3.8    38.1    -      -       +      -
    351F  VAL*     4.1     9.6    -      -       +      -
    353F  ILE*     3.7    29.8    -      -       +      -
    365F  LEU*     3.7    24.7    -      -       +      -
    397F  PRO*     4.3     3.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 307 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303F  ARG      2.9    12.9    +      -       -      -
    304F  HIS      3.2     5.5    +      -       -      -
    306F  ILE*     1.3    75.5    -      -       -      +
    308F  GLY*     1.3    56.8    +      -       -      +
    310F  LEU*     4.3     1.6    -      -       -      +
    311F  HIS*     2.9    33.4    +      -       -      +
    395F  ILE*     3.6    24.4    -      -       -      +
    397F  PRO*     3.9    19.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 308 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304F  HIS      3.0    11.3    +      -       -      -
    305F  TYR      3.1     3.1    +      -       -      -
    307F  GLY*     1.3    73.7    -      -       -      +
    309F  LEU*     1.3    59.0    +      -       -      +
    311F  HIS*     4.5     2.0    -      -       -      -
    312F  HIS*     2.8    40.6    +      -       -      +
    386F  ALA      3.3    24.9    -      -       -      -
    390F  GLY*     3.8    12.9    -      -       -      -
    395F  ILE*     4.5     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 309 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279F  GLN*     4.4     1.1    -      -       -      +
    305F  TYR*     3.1    29.5    +      -       +      +
    306F  ILE*     3.1     8.3    +      -       -      +
    308F  GLY*     1.3    72.7    -      -       -      +
    310F  LEU*     1.3    62.5    +      -       +      +
    312F  HIS      3.8     0.2    -      -       -      -
    313F  ALA*     2.9    29.8    +      -       -      +
    316F  LEU*     3.8    26.4    -      -       +      +
    351F  VAL*     4.4     7.2    -      -       +      -
    365F  LEU*     3.7    30.5    -      -       +      -
    367F  PHE*     4.1    30.2    -      -       +      -
    383F  MET*     3.6    35.9    -      -       +      +
    386F  ALA*     4.3     2.2    +      -       +      -
    387F  GLY      4.5     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 310 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306F  ILE*     2.9    32.7    +      -       +      +
    307F  GLY*     4.3     3.4    -      -       -      +
    309F  LEU*     1.3    80.2    -      -       +      +
    311F  HIS*     1.3    62.4    +      -       -      +
    313F  ALA*     3.5    13.6    -      -       +      +
    340F  LEU*     3.5    48.7    -      -       +      +
    341F  VAL*     3.8     0.7    -      -       -      -
    342F  TYR*     3.8    26.9    -      -       +      +
    350F  CYS*     3.8    31.4    -      -       +      -
    351F  VAL*     4.1    12.6    -      -       +      -
    367F  PHE*     5.0     1.1    -      -       +      -
    397F  PRO*     4.7     9.2    -      -       +      -
    398F  GLN*     5.6     4.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 311 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307F  GLY      2.9    21.1    +      -       -      +
    308F  GLY      3.9     1.8    -      -       -      +
    310F  LEU*     1.3    78.0    -      -       -      +
    312F  HIS*     1.3    88.8    +      +       -      +
    314F  PRO*     3.4    16.6    -      -       -      +
    395F  ILE*     3.9    28.5    -      -       +      +
    429F  ARG*     5.4     2.6    +      -       -      -
    433F  ASP*     5.8     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 312 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308F  GLY*     2.8    29.3    +      -       -      +
    311F  HIS*     1.3    93.0    +      +       -      +
    313F  ALA*     1.3    65.2    +      -       -      +
    314F  PRO*     3.2     4.5    -      -       -      -
    315F  SER*     2.8    11.0    +      -       -      -
    316F  LEU*     2.8    21.0    +      -       +      -
    386F  ALA*     4.0    25.1    -      -       +      -
    389F  ASP*     2.8    30.3    +      -       +      -
    395F  ILE*     4.6     0.4    -      -       +      +
    433F  ASP*     4.6    12.5    +      -       -      -
    436F  TYR*     3.5    48.9    -      +       +      +
----------------------------------------------------------
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Residues in contact with ALA 313 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309F  LEU      2.9    19.0    +      -       -      +
    310F  LEU*     3.5    12.6    -      -       +      +
    312F  HIS*     1.3    75.1    -      -       -      +
    314F  PRO*     1.4    68.9    -      -       +      +
    315F  SER      3.0     1.0    +      -       -      -
    316F  LEU*     3.9     9.6    -      -       +      -
    317F  LEU*     3.1    39.5    +      -       +      +
    340F  LEU*     3.7    26.5    -      -       +      -
    350F  CYS*     6.0     0.2    -      -       -      -
    367F  PHE*     5.6     3.4    -      -       +      -
    420F  PRO*     5.2     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 314 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310F  LEU      4.3     2.7    -      -       -      +
    311F  HIS      3.4    12.8    -      -       -      +
    312F  HIS      3.3     6.1    -      -       -      -
    313F  ALA*     1.4    91.9    -      -       +      +
    315F  SER*     1.3    56.3    +      -       -      +
    340F  LEU*     4.6    11.4    -      -       +      -
    420F  PRO*     4.3    16.3    -      -       +      +
    425F  ASP      5.0     0.2    -      -       -      -
    426F  VAL*     3.5    21.2    -      -       -      +
    429F  ARG*     3.5    53.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 315 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312F  HIS*     2.8    10.6    +      -       -      +
    314F  PRO*     1.3    80.2    -      -       -      +
    316F  LEU*     1.3    63.0    +      -       -      -
    317F  LEU      3.2     2.2    -      -       -      -
    318F  ALA*     3.0    24.0    +      -       -      +
    319F  PHE*     4.4     1.0    +      -       -      -
    426F  VAL      4.3     4.0    -      -       -      -
    429F  ARG*     3.9    11.2    -      -       -      +
    430F  LEU*     3.8    22.6    -      -       -      +
    433F  ASP*     3.6    19.6    +      -       -      -
    436F  TYR*     2.7    36.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 316 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309F  LEU*     3.8    32.1    -      -       +      +
    312F  HIS*     2.8    22.7    +      -       +      +
    313F  ALA*     3.9     3.8    -      -       -      +
    315F  SER*     1.3    73.1    +      -       -      +
    317F  LEU*     1.3    56.7    +      -       +      +
    318F  ALA      3.1     0.2    -      -       -      -
    319F  PHE*     3.0    21.3    +      -       -      +
    320F  THR*     3.2    21.2    +      -       +      +
    367F  PHE*     3.8    28.7    -      -       +      -
    382F  ALA*     3.5    43.7    -      -       +      +
    383F  MET*     3.7     3.1    -      -       -      +
    386F  ALA*     4.0     9.6    -      -       +      -
    436F  TYR*     3.4    11.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 317 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313F  ALA*     3.1    31.8    +      -       +      +
    315F  SER      3.2     0.4    -      -       -      -
    316F  LEU*     1.3    71.5    -      -       +      +
    318F  ALA*     1.3    60.1    +      -       -      +
    319F  PHE      3.0     2.5    -      -       -      -
    320F  THR*     3.1    20.2    -      -       -      +
    321F  ASN*     2.7    38.6    +      -       -      +
    327F  TYR*     3.5    15.3    -      -       -      +
    330F  LEU*     4.1    17.5    -      -       +      -
    340F  LEU*     5.9     0.9    -      -       +      -
    367F  PHE*     4.3    11.0    -      -       +      -
    369F  SER*     3.3    29.2    -      -       -      +
    419F  THR*     5.0     4.3    -      -       +      -
    420F  PRO*     3.7    26.9    -      -       +      -
    426F  VAL*     4.1     6.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 318 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315F  SER      3.0    17.0    +      -       -      +
    317F  LEU*     1.3    77.4    -      -       -      +
    319F  PHE*     1.3    59.4    +      -       +      +
    322F  PRO*     3.4    15.8    -      -       -      +
    423F  LEU*     5.0     0.2    -      -       -      -
    426F  VAL*     3.6    28.3    -      -       +      +
    427F  ILE*     3.9    12.7    -      -       +      +
    430F  LEU*     3.8    26.2    -      -       +      -
    451F  TRP*     2.9    20.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 319 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315F  SER      5.0     0.7    -      -       -      -
    316F  LEU*     3.0     9.9    +      -       -      +
    318F  ALA*     1.3    80.1    -      -       +      +
    320F  THR*     1.3    62.1    -      -       -      +
    321F  ASN      3.4     1.1    -      -       -      -
    322F  PRO*     3.9    11.8    -      -       -      +
    375F  ASN      4.7     4.5    +      -       -      +
    378F  LEU*     3.9    26.0    -      -       +      +
    379F  ALA*     3.6    16.9    +      -       -      +
    382F  ALA*     3.9    28.5    -      -       +      -
    430F  LEU*     3.8    30.5    -      -       +      -
    437F  LEU*     4.0    11.2    -      -       +      -
    443F  PHE*     3.8    28.0    -      +       -      -
    447F  LEU*     4.8     3.8    -      -       +      -
    448F  ILE*     4.6     7.4    -      -       +      -
    451F  TRP*     3.4    56.6    -      +       +      -
----------------------------------------------------------
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Residues in contact with THR 320 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275F  MET*     5.4     0.2    -      -       -      +
    316F  LEU*     3.2    20.8    +      -       +      +
    317F  LEU*     3.1    23.9    -      -       -      +
    319F  PHE*     1.3    79.9    -      -       -      +
    321F  ASN*     1.3    76.3    +      -       -      +
    322F  PRO*     3.6     4.0    -      -       -      +
    367F  PHE*     4.2     4.4    -      -       +      -
    370F  PRO*     3.3    14.9    -      -       -      +
    371F  ASP      3.0    33.1    +      -       -      +
    379F  ALA*     4.3     9.9    -      -       +      +
    383F  MET*     3.8    37.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 321 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317F  LEU*     2.7    20.4    +      -       +      +
    320F  THR*     1.3   103.9    +      -       -      +
    322F  PRO*     1.3    59.3    -      -       -      +
    323F  THR      3.3     0.7    +      -       -      -
    326F  SER*     3.3    18.1    +      -       -      -
    327F  TYR*     3.0    37.9    +      -       +      +
    329F  ARG*     3.9     4.4    -      -       -      +
    330F  LEU*     3.9    15.9    -      -       -      +
    369F  SER*     2.7    39.6    +      -       -      +
    370F  PRO*     3.6     0.3    -      -       -      +
    371F  ASP*     3.4    15.6    +      -       -      -
    423F  LEU*     4.0     0.9    -      -       -      +
----------------------------------------------------------
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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