Contacts of the helix formed by residues 635 - 658 (chain B) in PDB entry 4MVY


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 THR 635 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424A  PRO*     3.7    34.5    -      -       +      +
    425A  GLY*     3.8    21.8    -      -       -      +
    634B  TYR*     1.3    73.7    -      -       -      +
    636B  GLU*     1.3    59.9    +      -       -      +
    637B  GLU*     3.4     8.8    +      -       -      +
    638B  ASP*     2.9    33.9    +      -       -      +
    639B  GLU*     2.9    31.7    +      -       -      +
    694B  ARG*     3.7    14.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 636 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    541A  LYS*     4.4    18.1    -      -       -      +
    654A  HIS*     3.0    42.0    +      -       -      +
    657A  LEU*     3.7    40.0    -      -       +      +
    658A  ILE*     4.1    20.4    -      -       +      +
    635B  THR*     1.3    74.4    -      -       -      +
    637B  GLU*     1.3    57.9    +      -       -      +
    639B  GLU*     3.1     7.8    +      -       -      +
    640B  SER*     2.9    27.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 637 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    428A  VAL*     5.8     2.1    -      -       -      +
    429A  PRO*     6.0     0.7    -      -       -      +
    430A  GLU*     5.1     5.9    +      -       -      +
    658A  ILE*     3.9    36.8    -      -       +      +
    663A  LYS*     6.1     2.0    -      -       -      -
    635B  THR*     3.3     9.2    +      -       -      +
    636B  GLU*     1.3    78.3    -      -       -      +
    638B  ASP*     1.3    63.1    +      -       -      +
    640B  SER*     2.9    20.1    +      -       -      +
    641B  LEU*     3.2     8.0    +      -       -      +
    678B  TYR*     4.1    23.9    -      -       +      -
    681B  ASP*     2.6    35.8    -      -       -      +
    682B  MET*     4.6     7.9    -      -       -      +
    694B  ARG*     5.8     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 638 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    634B  TYR*     3.5    13.0    -      -       +      -
    635B  THR*     2.9    34.2    +      -       -      +
    637B  GLU*     1.3    74.4    -      -       -      +
    639B  GLU*     1.3    62.3    +      -       -      +
    641B  LEU*     3.2     5.2    +      -       -      +
    642B  ILE*     3.0    26.9    +      -       -      +
    678B  TYR*     2.5    33.5    +      -       -      -
    694B  ARG*     2.6    37.8    +      -       -      -
    697B  THR*     3.7     2.4    -      -       -      +
    701B  ILE*     3.6    19.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 639 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    654A  HIS*     3.8    23.7    +      -       +      +
    634B  TYR*     3.9    32.6    -      -       +      +
    635B  THR      2.9    23.2    +      -       -      +
    636B  GLU*     3.1    13.9    +      -       -      +
    638B  ASP*     1.3    76.8    -      -       -      +
    640B  SER*     1.3    57.4    +      -       -      +
    642B  ILE*     3.4    14.0    +      -       -      +
    643B  GLN*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 640 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    651A  THR*     5.4     1.5    -      -       -      +
    654A  HIS*     3.5    30.4    -      -       -      -
    655A  TYR*     3.7    28.7    +      -       -      -
    658A  ILE*     4.1     6.2    -      -       -      +
    636B  GLU      2.9    11.1    +      -       -      -
    637B  GLU*     2.9    19.9    +      -       -      +
    639B  GLU*     1.3    76.8    -      -       -      +
    641B  LEU*     1.3    61.3    +      -       -      +
    643B  GLN*     3.3     5.2    +      -       -      +
    644B  LEU*     3.3    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 641 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    637B  GLU      3.2     6.2    +      -       -      +
    638B  ASP*     3.2     8.7    +      -       -      +
    640B  SER*     1.3    79.8    +      -       -      +
    642B  ILE*     1.3    65.6    +      -       -      +
    644B  LEU*     3.1    19.3    +      -       +      +
    645B  ILE*     3.1    22.7    +      -       +      +
    671B  VAL*     4.9     0.9    -      -       +      +
    674B  ALA*     4.1    15.0    -      -       +      +
    675B  ILE*     3.9    40.8    -      -       +      +
    678B  TYR*     3.4    46.2    -      -       +      -
    701B  ILE*     3.7    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 642 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    634B  TYR*     3.8    35.2    -      -       +      -
    638B  ASP      3.0    18.2    +      -       -      +
    639B  GLU*     3.7    13.7    -      -       -      +
    641B  LEU*     1.3    76.0    -      -       -      +
    643B  GLN*     1.3    57.3    +      -       -      +
    645B  ILE*     3.2     9.8    +      -       -      +
    646B  LYS*     2.9    53.4    +      -       +      +
    701B  ILE*     3.7    28.9    -      -       +      -
    743B  PHE*     3.8    28.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 643 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    650A  GLY*     4.7    10.7    -      -       -      -
    651A  THR*     4.6    11.0    -      -       -      +
    654A  HIS*     3.8    26.6    +      -       +      -
    639B  GLU      2.9    18.0    +      -       -      +
    640B  SER      3.6     6.1    -      -       -      +
    641B  LEU      3.2     0.2    -      -       -      -
    642B  ILE*     1.3    76.4    -      -       -      +
    644B  LEU*     1.3    58.7    +      -       +      +
    646B  LYS*     3.3    19.8    +      -       -      +
    647B  ASP*     2.8    70.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 644 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    651A  THR*     4.1    31.4    -      -       +      +
    655A  TYR*     3.6    19.5    -      -       -      +
    640B  SER      3.3    12.3    +      -       -      +
    641B  LEU*     3.1    17.1    +      -       +      +
    643B  GLN*     1.3    77.5    -      -       +      +
    645B  ILE*     1.3    62.1    +      -       -      +
    647B  ASP*     3.4     7.5    +      -       +      +
    648B  LEU*     3.1    23.0    +      -       -      +
    670B  ASP      6.2     0.4    -      -       -      -
    671B  VAL*     4.0    19.7    -      -       +      +
    674B  ALA*     3.7    29.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 645 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    641B  LEU*     3.1    32.4    +      -       +      +
    642B  ILE*     3.6     5.6    -      -       -      +
    644B  LEU*     1.3    74.5    -      -       -      +
    646B  LYS*     1.3    64.6    +      -       -      +
    648B  LEU*     3.4     7.2    +      -       -      +
    649B  PRO*     3.2    19.8    -      -       -      +
    671B  VAL*     4.1    18.8    -      -       +      -
    675B  ILE*     4.7     2.0    -      -       +      -
    701B  ILE*     4.1    10.8    -      -       +      +
    705B  GLY*     3.6    30.5    -      -       -      +
    708B  VAL*     3.9    34.3    -      -       +      +
    709B  THR*     6.1     0.2    -      -       +      -
    741B  PHE      5.1     0.5    -      -       -      +
    743B  PHE*     4.0    26.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 646 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     -4B  GLY      4.7     7.3    +      -       -      +
    642B  ILE*     2.9    38.4    +      -       +      +
    643B  GLN*     3.6    23.6    +      -       -      +
    645B  ILE*     1.3    78.6    -      -       -      +
    647B  ASP*     1.3    61.6    +      -       -      +
    649B  PRO*     3.4    12.1    -      -       -      +
    741B  PHE      6.0     0.2    -      -       -      -
    743B  PHE*     3.8    32.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 647 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    643A  GLN*     5.8     0.2    +      -       -      -
    647A  ASP*     3.6    37.3    -      -       +      +
    651A  THR*     3.9     9.4    +      -       -      -
     -4B  GLY      3.6    18.7    +      -       -      +
    643B  GLN*     2.8    53.4    +      -       -      +
    644B  LEU*     3.8     7.1    -      -       +      +
    645B  ILE      3.2     0.4    -      -       -      -
    646B  LYS*     1.3    78.4    -      -       -      +
    648B  LEU*     1.3    65.6    +      -       -      +
    649B  PRO*     3.4     0.4    -      -       -      -
    650B  GLY*     3.4     5.1    +      -       -      -
    651B  THR*     3.2    22.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 648 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    644B  LEU      3.1    15.7    +      -       -      +
    645B  ILE*     3.6     5.8    -      -       -      +
    647B  ASP*     1.3    76.9    -      -       -      +
    649B  PRO*     1.3    64.9    -      -       +      +
    651B  THR*     3.1     6.0    +      -       -      -
    652B  ALA*     2.8    30.7    +      -       +      +
    667B  ALA*     3.8    36.6    -      -       +      +
    668B  VAL*     3.9    14.4    -      -       +      +
    671B  VAL*     4.0    16.8    -      -       +      -
    708B  VAL*     4.6     4.7    -      -       +      -
    709B  THR*     3.7    33.4    -      -       +      -
    712B  LEU*     3.6    19.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 649 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     -2B  GLY*     5.3     0.7    -      -       -      -
    272B  TYR*     4.7     1.4    +      -       -      -
    645B  ILE      3.2    14.6    -      -       -      +
    646B  LYS*     3.4    12.8    -      -       -      +
    647B  ASP      3.5     0.2    -      -       -      -
    648B  LEU*     1.3    92.5    -      -       +      +
    650B  GLY*     1.3    55.4    +      -       -      +
    652B  ALA*     3.9     0.7    -      -       -      +
    653B  ASP*     2.8    31.7    +      -       -      +
    708B  VAL*     4.2     9.6    -      -       +      -
    712B  LEU*     3.7    15.7    -      -       +      +
    741B  PHE*     3.4    54.0    -      -       +      +
    742B  GLU*     5.7     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 650 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    643A  GLN*     4.1     5.8    -      -       -      -
     -4B  GLY      3.6    23.1    +      -       -      -
     -2B  GLY*     3.8    18.6    -      -       -      +
    646B  LYS      5.0     0.2    +      -       -      -
    647B  ASP      3.4     4.7    +      -       -      -
    648B  LEU      3.3     0.6    -      -       -      -
    649B  PRO*     1.3    79.8    -      -       -      +
    651B  THR*     1.3    59.6    +      -       -      +
    653B  ASP*     3.5     1.9    +      -       -      +
    654B  HIS*     3.0    35.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 651 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    640A  SER*     5.4     1.7    -      -       -      +
    643A  GLN*     4.5     6.0    -      -       +      +
    644A  LEU*     4.0    22.7    -      -       +      +
    647A  ASP*     3.8    13.2    +      -       -      -
    647B  ASP*     3.2    15.2    +      -       -      +
    648B  LEU*     3.1    13.3    +      -       +      -
    650B  GLY*     1.3    73.7    -      -       -      +
    652B  ALA*     1.3    66.0    +      -       -      +
    654B  HIS*     3.3     9.2    +      -       -      +
    655B  TYR*     3.2    50.0    +      -       +      -
    667B  ALA*     4.1    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 652 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    648B  LEU*     2.8    25.8    +      -       +      +
    649B  PRO      3.9     2.7    -      -       -      +
    651B  THR*     1.3    73.6    -      -       -      +
    653B  ASP*     1.3    57.9    +      -       -      +
    655B  TYR*     3.3    10.8    +      -       -      +
    656B  TYR*     2.9    46.1    +      -       +      -
    664B  ALA*     4.8     6.5    -      -       +      +
    667B  ALA*     5.2     0.9    -      -       -      -
    668B  VAL*     4.7     6.5    -      -       +      -
    712B  LEU*     4.1    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 653 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     -2B  GLY*     3.7     7.7    -      -       -      -
     -1B  SER*     2.8    37.8    +      -       -      -
    272B  TYR*     2.6    35.7    +      -       -      +
    276B  LYS*     2.8    26.1    +      -       -      -
    649B  PRO      2.8    19.5    +      -       -      +
    650B  GLY      3.7     4.9    -      -       -      +
    652B  ALA*     1.3    77.4    -      -       -      +
    654B  HIS*     1.3    65.8    +      -       -      +
    656B  TYR*     3.2     1.2    +      -       -      +
    657B  LEU*     3.0    28.6    +      -       -      +
    741B  PHE*     5.6     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 654 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    636A  GLU*     3.1    29.9    +      -       -      +
    639A  GLU*     4.0    27.0    +      -       +      +
    640A  SER*     3.6    23.6    -      -       -      -
    643A  GLN*     3.5    41.0    +      -       +      +
     -3B  PRO      4.2     5.4    +      -       -      -
     -2B  GLY*     4.7     0.9    -      -       -      -
     -1B  SER*     4.7    16.6    -      -       -      -
    650B  GLY      3.0    21.6    +      -       -      -
    651B  THR*     3.3     6.5    +      -       -      +
    653B  ASP*     1.3    78.6    +      -       -      +
    655B  TYR*     1.3    61.8    +      -       -      +
    657B  LEU*     3.2     2.2    +      -       -      -
    658B  ILE*     3.2    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 655 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    640A  SER*     3.8    21.5    -      -       -      -
    644A  LEU*     3.5    28.4    -      -       +      +
    674A  ALA*     5.5     0.7    -      -       -      +
    651B  THR*     3.2    41.0    +      -       +      -
    652B  ALA      3.7     4.7    -      -       -      +
    653B  ASP      3.3     0.2    -      -       -      -
    654B  HIS*     1.3    77.6    -      -       -      +
    656B  TYR*     1.3    57.8    +      -       -      +
    657B  LEU      3.2     0.5    +      -       -      -
    658B  ILE*     3.2    21.1    +      -       +      +
    660B  ASP*     2.6    45.3    +      -       +      +
    663B  LYS*     3.6    52.7    -      -       +      +
    664B  ALA*     3.7     9.6    -      -       -      +
    667B  ALA*     4.2     5.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 656 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268B  VAL*     4.2    20.6    -      -       +      -
    269B  ILE*     5.0    10.8    -      -       +      +
    272B  TYR*     3.5    63.3    -      +       +      -
    273B  HIS*     5.0     3.8    +      -       -      -
    652B  ALA*     2.9    34.6    +      -       +      +
    653B  ASP      3.2     3.6    +      -       -      +
    655B  TYR*     1.3    75.7    -      -       -      +
    657B  LEU*     1.3    58.9    +      -       -      +
    659B  PRO*     3.3    20.9    -      -       -      +
    660B  ASP      4.7     2.7    -      -       -      +
    661B  ILE*     4.6    13.0    -      -       +      -
    664B  ALA*     4.0    23.0    -      -       +      +
    665B  ILE*     5.7     0.3    -      -       -      +
    712B  LEU*     2.7    28.0    +      -       +      -
    713B  LEU*     5.5     0.5    -      -       -      +
    715B  PRO*     3.7     6.3    -      -       +      +
    716B  ILE*     3.7    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 657 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    636A  GLU*     3.6    30.7    -      -       +      +
     -1B  SER*     3.0    29.8    -      -       -      +
    242B  PHE*     5.9     1.8    -      -       +      -
    272B  TYR*     4.1     4.5    -      -       +      -
    273B  HIS*     3.4    35.0    -      -       +      +
    276B  LYS*     4.5     1.8    -      -       -      +
    512B  VAL*     5.6     2.3    -      -       -      +
    541B  LYS*     3.3    24.7    +      -       -      +
    653B  ASP*     3.0    33.3    +      -       -      +
    654B  HIS*     3.7     0.4    -      -       -      +
    655B  TYR      3.1     0.4    -      -       -      -
    656B  TYR*     1.3    80.6    -      -       -      +
    658B  ILE*     1.3    62.8    +      -       -      +
    659B  PRO*     3.5     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 658 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    636A  GLU*     3.9     9.6    -      -       +      +
    637A  GLU*     3.8    40.8    -      -       +      +
    640A  SER*     3.8    22.7    -      -       -      +
    428B  VAL*     3.4    28.1    -      -       +      +
    541B  LYS*     3.3    18.0    -      -       -      +
    654B  HIS      3.2    15.6    +      -       -      +
    655B  TYR*     3.2    19.9    +      -       +      +
    657B  LEU*     1.3    73.9    -      -       -      +
    659B  PRO*     1.3    76.3    -      -       +      +
    660B  ASP*     4.2    11.0    -      -       +      +
    663B  LYS*     5.8     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