Contacts of the helix formed by residues 510 - 537 (chain B) in PDB entry 4L6V


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

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

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with GLY 510 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    454B  GLU*     3.8     3.8    -      -       -      -
    455B  PRO*     3.4    11.1    -      -       -      +
    508B  THR*     4.3     0.8    +      -       -      +
    509B  ILE*     1.3    73.7    -      -       -      +
    511B  PRO*     1.3    73.2    -      -       -      +
    512B  GLY      3.1     3.4    -      -       -      -
    513B  ASP*     2.9    31.5    +      -       -      +
    514B  PHE      3.4     4.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 511 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    452B  LEU*     3.6    46.9    -      -       +      -
    453B  ILE      3.3    25.2    +      -       -      +
    454B  GLU*     3.6    16.4    -      -       +      +
    510B  GLY*     1.3    84.6    -      -       -      +
    512B  GLY*     1.3    62.5    +      -       -      +
    514B  PHE*     3.2    16.5    +      -       -      +
    515B  LEU*     3.6    14.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 512 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    435B  TYR*     4.1     5.9    +      -       -      -
    510B  GLY*     3.1     1.8    -      -       -      -
    511B  PRO*     1.3    78.9    -      -       -      +
    513B  ASP*     1.3    61.1    +      -       -      +
    515B  LEU*     3.8     6.3    +      -       -      +
    516B  VAL*     3.0    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 513 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    455B  PRO*     4.6     1.8    -      -       +      -
    508B  THR      4.5     3.4    -      -       -      +
    509B  ILE*     3.6    31.5    -      -       +      +
    510B  GLY*     2.9    29.3    +      -       -      +
    512B  GLY*     1.3    79.9    -      -       -      +
    514B  PHE*     1.3    64.9    +      -       -      +
    515B  LEU      3.2     1.0    +      -       -      -
    516B  VAL*     3.5     8.7    +      -       -      +
    517B  HIS*     3.0    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 514 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    434B  LEU*     4.6     4.5    -      -       +      -
    453B  ILE*     3.2    69.8    -      -       +      +
    454B  GLU      4.4     7.2    -      -       -      -
    455B  PRO*     3.8    19.2    -      -       +      +
    510B  GLY      3.4     2.6    +      -       -      -
    511B  PRO      3.2     6.2    +      -       -      +
    513B  ASP*     1.3    79.9    -      -       -      +
    515B  LEU*     1.3    82.8    +      -       +      +
    517B  HIS*     3.7     4.1    +      -       -      +
    518B  HIS*     3.3    56.8    +      +       -      -
----------------------------------------------------------
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Residues in contact with LEU 515 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431B  THR*     4.1     9.1    -      -       +      +
    434B  LEU*     3.4    39.0    -      -       +      -
    435B  TYR*     3.0    48.0    -      -       +      +
    438B  ASN*     4.7    15.0    -      -       -      +
    451B  ILE      4.9     5.8    -      -       -      +
    452B  LEU*     6.4     0.9    -      -       +      -
    453B  ILE*     4.5     3.4    -      -       +      -
    511B  PRO*     3.6    14.7    +      -       +      +
    512B  GLY*     3.8     6.3    +      -       -      +
    513B  ASP      3.2     0.4    -      -       -      -
    514B  PHE*     1.3    91.2    -      -       +      +
    516B  VAL*     1.3    58.7    +      -       -      +
    517B  HIS      3.1     2.0    -      -       -      -
    518B  HIS*     3.2     7.4    +      -       +      +
    519B  ALA*     2.9    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 516 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    435B  TYR*     3.5     9.8    +      -       -      +
    512B  GLY      3.0    22.7    -      -       -      +
    513B  ASP*     3.8    12.6    -      -       -      +
    515B  LEU*     1.3    74.8    -      -       -      +
    517B  HIS*     1.3    57.0    +      -       -      +
    519B  ALA*     3.4    11.9    +      -       +      +
    520B  ILE*     2.9    40.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 517 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509B  ILE*     5.6     8.1    -      -       +      -
    513B  ASP*     3.0    34.2    +      -       +      +
    514B  PHE*     3.8     6.3    -      -       -      +
    515B  LEU      3.1     0.2    -      -       -      -
    516B  VAL*     1.3    78.7    -      -       -      +
    518B  HIS*     1.3    65.5    +      -       +      +
    520B  ILE*     3.1    17.4    +      -       +      +
    521B  ALA*     2.8    28.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 518 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    426B  PHE*     6.5     0.9    -      +       -      -
    427B  LEU*     4.1    21.1    -      -       +      +
    431B  THR*     3.5    20.8    +      -       +      +
    514B  PHE*     3.3    49.5    +      +       +      +
    515B  LEU*     3.2    10.0    +      -       +      +
    517B  HIS*     1.3    77.3    -      -       +      +
    519B  ALA*     1.3    61.8    +      -       -      +
    521B  ALA*     3.5     8.4    -      -       +      +
    522B  LEU*     2.9    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 519 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    431B  THR*     4.0    18.5    -      -       +      +
    435B  TYR*     5.2     3.8    -      -       +      -
    515B  LEU      2.9    13.2    +      -       -      +
    516B  VAL*     3.4    18.8    -      -       +      +
    518B  HIS*     1.3    78.8    -      -       -      +
    520B  ILE*     1.3    56.3    +      -       +      +
    522B  LEU*     3.4    12.4    -      -       +      +
    523B  GLY*     3.1    20.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 520 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    516B  VAL*     2.9    26.6    +      -       +      +
    517B  HIS*     3.4    20.2    -      -       +      +
    519B  ALA*     1.3    75.7    -      -       +      +
    521B  ALA*     1.3    58.5    +      -       -      +
    522B  LEU      3.1     0.2    -      -       -      -
    523B  GLY*     2.7    21.1    +      -       -      +
    524B  LEU*     2.8    34.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 521 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    427B  LEU*     3.8    16.6    -      -       +      -
    517B  HIS      2.8    12.9    +      -       -      +
    518B  HIS*     3.3    13.7    +      -       -      +
    520B  ILE*     1.3    77.1    -      -       -      +
    522B  LEU*     1.3    57.2    +      -       -      +
    524B  LEU*     3.8     7.1    -      -       -      +
    525B  HIS*     2.9    45.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 522 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424B  SER*     3.3    30.5    -      -       -      +
    427B  LEU*     3.7    15.2    -      -       +      +
    428B  GLY*     3.6    25.6    -      -       -      +
    431B  THR*     5.3     5.6    -      -       +      +
    432B  LEU*     6.5     0.2    -      -       +      -
    518B  HIS      2.9    14.0    +      -       -      +
    519B  ALA*     3.4    15.0    -      -       +      +
    520B  ILE      3.1     0.2    -      -       -      -
    521B  ALA*     1.3    76.0    -      -       -      +
    523B  GLY*     1.3    62.6    +      -       -      +
    525B  HIS*     4.8     0.7    -      -       -      -
    526B  THR*     2.9    44.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 523 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    519B  ALA      3.1    10.3    +      -       -      -
    520B  ILE*     2.7    16.4    +      -       -      -
    522B  LEU*     1.3    73.6    -      -       -      +
    524B  LEU*     1.3    58.3    +      -       -      +
    526B  THR*     4.7     1.5    -      -       -      -
    527B  THR*     2.6    31.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 524 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    520B  ILE*     2.8    36.6    +      -       +      +
    521B  ALA*     3.2     6.9    +      -       -      +
    523B  GLY*     1.3    76.1    -      -       -      +
    525B  HIS*     1.3    63.1    +      -       +      +
    527B  THR*     3.6     4.3    +      -       -      -
    528B  ALA*     3.0    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 525 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420B  LEU*     3.2    25.4    -      -       +      +
    423B  VAL*     3.4    34.8    -      -       +      +
    424B  SER*     3.7    14.4    -      -       -      +
    427B  LEU*     4.2     9.1    -      -       +      +
    521B  ALA*     2.9    34.3    +      -       +      +
    522B  LEU      4.2     1.1    -      -       -      +
    524B  LEU*     1.3    79.2    -      -       +      +
    526B  THR*     1.3    55.1    +      -       -      +
    528B  ALA*     3.1     3.6    +      -       -      +
    529B  LEU      2.7    30.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 526 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    424B  SER*     3.2    22.7    +      -       -      +
    522B  LEU*     2.9    27.6    +      -       -      +
    523B  GLY*     4.7     1.8    -      -       -      -
    525B  HIS*     1.3    76.6    -      -       -      +
    527B  THR*     1.3    62.3    +      -       -      +
    529B  LEU*     3.3    15.6    +      -       +      +
    530B  ILE*     3.1    34.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 527 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    382B  VAL*     4.8    11.9    -      -       +      -
    523B  GLY      2.6    24.1    +      -       -      -
    524B  LEU*     3.9     5.2    -      -       -      -
    525B  HIS      3.3     0.4    -      -       -      -
    526B  THR*     1.3    78.2    -      -       -      +
    528B  ALA*     1.3    60.4    +      -       -      +
    530B  ILE*     3.6    11.8    +      -       +      +
    531B  LEU*     3.2    41.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 528 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385B  PHE*     5.1     9.4    -      -       +      -
    420B  LEU*     4.2     5.2    -      -       +      -
    524B  LEU      3.0    18.8    +      -       -      +
    525B  HIS*     3.5     6.7    -      -       -      +
    527B  THR*     1.3    74.7    -      -       -      +
    529B  LEU*     1.3    57.9    +      -       -      +
    531B  LEU*     4.6     6.5    -      -       -      +
    532B  ILE*     2.7    56.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 529 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    692A  TYR*     4.6     3.8    -      -       -      +
    696A  LEU*     4.1    23.8    -      -       +      -
    417B  ILE*     3.8    39.2    -      -       +      +
    420B  LEU*     3.9    25.3    -      -       +      +
    421B  SER*     4.2    17.0    -      -       -      +
    424B  SER*     4.5     9.0    -      -       -      +
    525B  HIS      2.7    17.4    +      -       -      +
    526B  THR*     3.3    20.2    +      -       +      +
    528B  ALA*     1.3    72.7    -      -       -      +
    530B  ILE*     1.3    59.1    +      -       +      +
    532B  ILE*     4.2     0.3    -      -       -      +
    533B  LYS*     2.9    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 530 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    692A  TYR*     3.5    37.5    -      -       +      +
    526B  THR*     3.1    30.6    +      -       +      +
    527B  THR*     3.9    11.4    -      -       +      +
    528B  ALA      3.3     0.2    -      -       -      -
    529B  LEU*     1.3    79.3    -      -       +      +
    531B  LEU*     1.3    62.7    +      -       +      +
    533B  LYS*     3.7     1.4    -      -       -      +
    534B  GLY*     2.9    28.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 531 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381B  MET*     4.4     1.1    -      -       +      +
    382B  VAL*     3.9    38.1    -      -       +      +
    385B  PHE*     3.6    50.8    -      -       +      +
    386B  ALA*     4.9     4.5    -      -       +      +
    389B  ALA*     5.2     1.2    -      -       -      +
    527B  THR*     3.2    35.5    +      -       +      +
    528B  ALA*     4.0     1.3    -      -       -      +
    530B  ILE*     1.3    84.5    -      -       +      +
    532B  ILE*     1.3    63.1    +      -       -      +
    534B  GLY*     3.6     1.6    +      -       -      -
    535B  ALA*     3.2    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 532 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385B  PHE*     3.9    29.8    -      -       +      -
    416B  LEU*     5.3     7.6    -      -       +      -
    417B  ILE*     5.2     4.3    -      -       +      -
    420B  LEU*     3.7    25.1    -      -       +      -
    528B  ALA*     2.7    36.6    +      -       +      +
    529B  LEU      4.2     1.3    -      -       -      +
    531B  LEU*     1.3    70.0    -      -       -      +
    533B  LYS*     1.3    65.5    +      -       -      +
    535B  ALA*     3.1     6.6    +      -       -      +
    536B  LEU*     2.9    45.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 533 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    692A  TYR*     3.4    56.0    +      -       +      +
    695A  GLU*     3.2    34.6    +      -       -      +
    696A  LEU*     3.6    26.0    -      -       +      +
    417B  ILE*     3.8    28.4    -      -       +      +
    529B  LEU      2.9    20.2    +      -       -      +
    530B  ILE      3.7     1.6    -      -       -      +
    532B  ILE*     1.3    76.8    -      -       -      +
    534B  GLY*     1.3    71.4    -      -       -      +
    535B  ALA      2.9     0.7    +      -       -      -
    536B  LEU*     2.9     2.4    +      -       -      +
    537B  ASP*     2.9    40.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 534 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    692A  TYR*     5.7     1.3    -      -       -      -
    389B  ALA*     4.1     7.2    -      -       -      +
    530B  ILE      2.9    15.9    +      -       -      -
    531B  LEU*     4.0     2.0    -      -       -      -
    533B  LYS*     1.3    87.7    -      -       -      +
    535B  ALA*     1.3    56.3    +      -       -      +
    537B  ASP*     4.2     1.5    -      -       -      -
    538B  ALA*     3.2    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 535 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385B  PHE*     4.7     6.5    -      -       +      +
    388B  GLY      4.5     5.4    -      -       -      +
    389B  ALA*     3.6    31.6    -      -       +      +
    392B  PHE*     3.1    22.8    -      -       +      +
    531B  LEU      3.2    13.3    +      -       -      +
    532B  ILE*     3.1    12.0    +      -       +      +
    533B  LYS      3.0     0.8    -      -       -      -
    534B  GLY*     1.3    77.2    -      -       -      +
    536B  LEU*     1.3    62.4    +      -       +      +
    538B  ALA*     3.0    20.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 536 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392B  PHE*     4.2    10.8    -      -       +      -
    409B  MET*     4.5    18.6    -      -       +      +
    410B  LEU*     3.8    33.6    -      -       +      +
    413B  LYS*     3.8    44.8    +      -       +      +
    416B  LEU*     3.9    17.0    -      -       +      -
    417B  ILE*     4.2     9.6    -      -       +      -
    532B  ILE*     2.9    41.0    +      -       +      +
    533B  LYS*     3.7     3.4    -      -       -      +
    535B  ALA*     1.3    79.6    -      -       +      +
    537B  ASP*     1.3    59.6    +      -       -      +
    538B  ALA      3.1     3.3    +      -       -      -
    539B  ARG*     4.1     7.8    +      -       -      +
    540B  GLY      4.6     0.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 537 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    695A  GLU*     3.6    37.2    -      -       -      +
    698A  GLU*     5.8     0.2    -      -       -      -
    699A  SER*     4.6     2.3    +      -       -      -
    413B  LYS*     2.5    41.2    +      -       -      +
    417B  ILE*     4.0     8.7    -      -       -      +
    533B  LYS*     2.9    34.9    +      -       -      +
    534B  GLY*     4.2     2.9    -      -       -      +
    536B  LEU*     1.3    72.0    -      -       -      +
    538B  ALA*     1.3    62.4    -      -       -      +
    539B  ARG      3.2     2.2    -      -       -      -
    540B  GLY*     3.2    20.2    +      -       -      +
    541B  SER*     4.1    11.8    -      -       -      -
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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