Contacts of the helix formed by residues 547 - 572 (chain A) in PDB entry 4IM3


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 ARG 547 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    543A  HIS      4.0     0.8    +      -       -      -
    544A  PRO      2.9    19.9    +      -       -      +
    545A  LYS*     3.8     9.6    -      -       -      +
    546A  ASP*     1.3    80.9    -      -       -      +
    548A  ASN*     1.3    59.3    +      -       -      +
    550A  GLU*     3.1    54.3    +      -       +      +
    551A  LYS*     2.9    33.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 548 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    542A  THR*     3.8    26.5    -      -       -      +
    543A  HIS      5.2     0.8    +      -       -      -
    546A  ASP*     3.6    27.5    -      -       -      +
    547A  ARG*     1.3    78.6    -      -       -      +
    549A  VAL*     1.3    59.6    +      -       +      +
    551A  LYS*     3.3    12.8    +      -       -      +
    552A  LEU*     2.9    33.8    +      -       -      +
    600A  HIS*     3.0    25.6    +      -       -      +
    604A  GLU*     4.6    11.5    +      -       -      +
    605A  CYS*     3.7    24.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 549 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    426A  CYS*     3.8    23.1    -      -       -      +
    429A  ALA*     4.2    11.7    -      -       +      +
    430A  SER*     4.0    35.9    -      -       -      +
    433A  LEU*     5.0    13.9    -      -       +      -
    547A  ARG      3.3     0.2    -      -       -      -
    548A  ASN*     1.3    75.6    -      -       +      +
    550A  GLU*     1.3    65.8    +      -       +      +
    552A  LEU*     3.0     9.3    +      -       -      +
    553A  GLN*     2.6    39.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 550 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    544A  PRO      4.9     3.0    -      -       -      +
    547A  ARG*     3.1    67.5    +      -       +      +
    549A  VAL*     1.3    79.8    +      -       +      +
    551A  LYS*     1.3    64.9    +      -       -      +
    553A  GLN*     3.7     8.7    -      -       +      +
    554A  VAL*     3.0    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 551 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    546A  ASP*     3.1    28.0    +      -       -      +
    547A  ARG*     2.9    23.7    +      -       +      +
    548A  ASN*     3.4    20.9    +      -       -      +
    550A  GLU*     1.3    76.7    -      -       -      +
    552A  LEU*     1.3    61.5    +      -       -      +
    554A  VAL*     3.7     8.5    +      -       -      +
    555A  LEU*     3.6    25.0    +      -       -      +
    600A  HIS*     4.1    19.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 552 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  VAL*     4.8     7.3    -      -       +      +
    425A  ALA*     4.7     4.9    -      -       +      +
    426A  CYS*     4.3    19.3    -      -       +      +
    429A  ALA*     3.8    28.9    -      -       +      -
    548A  ASN      2.9    18.2    +      -       -      +
    549A  VAL*     3.3     9.4    -      -       -      +
    551A  LYS*     1.3    76.6    -      -       -      +
    553A  GLN*     1.3    58.4    +      -       -      +
    555A  LEU*     3.2     9.5    +      -       +      +
    556A  LEU*     2.8    28.6    +      -       -      +
    597A  ALA*     3.7    40.4    -      -       +      +
    600A  HIS*     4.3    15.0    -      -       +      -
    601A  PHE*     4.6     9.0    -      -       +      -
    605A  CYS*     4.3    11.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 553 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    426A  CYS*     3.9    14.6    -      -       -      -
    549A  VAL*     2.6    26.3    +      -       +      +
    550A  GLU*     3.2    10.7    +      -       +      +
    552A  LEU*     1.3    70.4    -      -       -      +
    554A  VAL*     1.3    60.0    +      -       -      +
    556A  LEU*     3.7    23.8    -      -       -      +
    557A  ASN*     2.8    62.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 554 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    550A  GLU*     3.0    21.4    +      -       +      +
    551A  LYS*     3.7     9.0    -      -       -      +
    553A  GLN*     1.3    78.6    -      -       -      +
    555A  LEU*     1.3    66.4    +      -       +      +
    557A  ASN*     3.4     7.6    +      -       -      +
    558A  CYS*     3.2    32.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 555 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422A  VAL*     5.9     0.2    -      -       +      -
    551A  LYS      3.6    14.8    +      -       -      +
    552A  LEU*     3.2    11.8    +      -       +      +
    554A  VAL*     1.3    82.2    -      -       +      +
    556A  LEU*     1.3    64.9    +      -       -      +
    558A  CYS*     3.4     7.1    +      -       -      +
    559A  MET*     3.1    30.3    +      -       -      +
    593A  HIS*     3.8    37.7    -      -       +      +
    596A  LYS*     4.1    26.0    -      -       +      +
    597A  ALA*     3.8    37.0    -      -       +      +
    600A  HIS*     5.8     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 556 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    419A  THR*     3.8    17.0    -      -       +      +
    422A  VAL*     3.6    27.3    -      -       +      +
    423A  CYS*     3.5    44.4    -      -       -      +
    426A  CYS*     4.7     8.5    -      -       +      -
    552A  LEU      2.8    16.1    +      -       -      +
    553A  GLN*     3.2    34.1    +      -       -      +
    555A  LEU*     1.3    76.3    -      -       -      +
    557A  ASN*     1.3    50.7    +      -       -      +
    559A  MET*     3.1     7.2    +      -       +      +
    560A  THR*     2.6    46.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 557 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    553A  GLN*     2.8    44.9    +      -       -      +
    554A  VAL*     3.7     7.5    -      -       -      +
    555A  LEU      3.3     0.2    -      -       -      -
    556A  LEU*     1.3    73.7    -      -       -      +
    558A  CYS*     1.3    65.2    +      -       -      +
    560A  THR*     3.9     7.1    +      -       -      -
    561A  GLU*     3.1    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 558 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    554A  VAL*     3.2    25.7    +      -       -      -
    555A  LEU*     3.7     9.2    -      -       -      +
    556A  LEU      3.4     0.2    -      -       -      -
    557A  ASN*     1.3    78.8    -      -       -      +
    559A  MET*     1.3    62.3    +      -       -      +
    561A  GLU*     3.6     5.0    +      -       -      +
    562A  ILE*     3.3    30.1    +      -       +      +
    593A  HIS*     3.9    28.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 559 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418A  ILE*     4.2    20.2    -      -       +      +
    419A  THR*     3.9    16.5    +      -       +      +
    422A  VAL*     4.2    14.6    -      -       +      -
    555A  LEU*     3.1    18.8    -      -       -      +
    556A  LEU*     3.1    11.6    +      -       -      +
    558A  CYS*     1.3    75.1    -      -       -      +
    560A  THR*     1.3    61.0    +      -       -      +
    562A  ILE*     3.5     5.9    +      -       -      +
    563A  TYR*     3.0    26.2    +      -       -      +
    590A  LEU*     3.5    33.5    -      -       +      +
    593A  HIS*     3.5    29.4    -      -       +      +
    594A  ALA*     3.6    31.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 560 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  PRO*     5.0     6.2    -      -       +      +
    419A  THR*     3.8    16.2    -      -       +      +
    556A  LEU*     2.6    36.5    +      -       -      +
    557A  ASN*     3.9     9.4    +      -       -      -
    558A  CYS      3.3     0.2    -      -       -      -
    559A  MET*     1.3    71.3    -      -       -      +
    561A  GLU*     1.3    61.2    +      -       -      +
    563A  TYR*     3.3    11.5    +      -       +      +
    564A  TYR*     3.0    55.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 561 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    557A  ASN      3.1    18.4    +      -       -      +
    558A  CYS*     3.8     6.3    -      -       -      +
    560A  THR*     1.3    77.0    -      -       -      +
    562A  ILE*     1.3    58.1    +      -       +      +
    564A  TYR*     3.3    15.6    +      -       -      +
    565A  GLN*     2.9    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 562 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    558A  CYS*     3.3    20.3    +      -       +      +
    559A  MET*     3.7     9.2    -      -       -      +
    560A  THR      3.3     0.2    -      -       -      -
    561A  GLU*     1.3    74.6    -      -       +      +
    563A  TYR*     1.3    57.3    +      -       -      +
    565A  GLN*     3.1     6.7    +      -       +      +
    566A  PHE*     2.7    66.5    +      -       +      -
    586A  ASP*     3.8    39.7    -      -       +      +
    589A  LYS*     4.2    15.9    -      -       +      -
    590A  LEU*     4.2    13.2    -      -       +      +
    593A  HIS*     4.5     7.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 563 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  GLU*     3.2    38.3    +      -       -      +
    101A  PRO*     3.9    24.0    -      -       +      -
    412A  ALA*     3.9     8.1    -      -       -      -
    415A  ALA*     3.7    18.2    -      -       +      -
    416A  LYS*     3.6    40.7    -      -       +      +
    419A  THR*     4.1    11.7    -      -       -      +
    559A  MET      3.0    14.3    +      -       -      +
    560A  THR*     3.4    11.4    -      -       +      +
    561A  GLU      3.3     0.2    -      -       -      -
    562A  ILE*     1.3    76.7    -      -       -      +
    564A  TYR*     1.3    90.8    +      +       -      +
    566A  PHE*     3.2     2.3    +      -       -      +
    567A  LYS*     2.8    43.6    +      -       +      +
    590A  LEU*     5.5     0.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 564 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99A  GLU      5.9     0.7    -      -       -      -
    100A  GLU*     4.1    24.5    +      -       -      +
    101A  PRO*     4.4     6.6    -      -       -      +
    560A  THR*     3.0    42.8    +      -       +      +
    561A  GLU*     3.7    18.8    -      -       -      +
    563A  TYR*     1.3   102.1    -      +       -      +
    565A  GLN*     1.3    57.4    +      -       -      +
    567A  LYS*     3.2    18.4    -      -       +      +
    568A  LYS*     2.9    38.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 565 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    561A  GLU*     2.9    17.0    +      -       -      +
    562A  ILE*     3.1    11.9    +      -       -      +
    564A  TYR*     1.3    75.4    -      -       -      +
    566A  PHE*     1.3    57.3    +      -       +      +
    568A  LYS*     3.0    28.3    +      -       -      +
    569A  ASP*     2.5    71.5    +      -       -      +
    582A  ILE*     6.6     0.4    -      -       +      -
    586A  ASP*     5.5     6.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 566 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  LEU      4.7     1.0    -      -       -      +
    411A  ASP*     4.1    11.9    -      -       +      -
    412A  ALA*     3.8    17.8    -      -       +      +
    414A  MET*     4.9     0.7    -      -       +      -
    415A  ALA*     4.1    18.2    -      -       +      -
    562A  ILE*     2.7    41.8    +      -       +      +
    563A  TYR*     3.5     6.5    -      -       -      +
    565A  GLN*     1.3    74.5    -      -       +      +
    567A  LYS*     1.3    59.6    +      -       -      +
    569A  ASP*     3.7     8.8    -      -       -      +
    570A  LYS*     2.9    28.9    +      -       -      +
    583A  HIS*     3.3    61.4    -      +       +      -
    586A  ASP*     4.1     8.3    -      -       +      -
    587A  LYS*     3.6    30.1    -      -       +      -
    590A  LEU*     4.4     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 567 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  TYR*     5.8     3.0    -      -       -      -
     99A  GLU*     3.6    26.8    +      -       -      +
    412A  ALA*     4.5    10.3    -      -       +      +
    563A  TYR*     2.8    46.7    +      -       +      +
    564A  TYR*     3.2    26.2    -      -       +      +
    566A  PHE*     1.3    78.2    -      -       -      +
    568A  LYS*     1.3    59.4    -      -       +      +
    570A  LYS*     3.6     7.2    +      -       +      +
    571A  ALA*     3.5    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 568 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    564A  TYR*     2.9    25.3    +      -       -      +
    565A  GLN*     3.0    31.4    +      -       -      +
    567A  LYS*     1.3    74.9    -      -       +      +
    569A  ASP*     1.3    63.8    +      -       -      +
    570A  LYS      3.1     0.2    -      -       -      -
    571A  ALA*     3.2    16.0    +      -       -      +
    572A  GLU*     3.3    13.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 569 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  LEU*     3.2    13.5    -      -       +      +
    565A  GLN*     2.5    57.4    +      -       -      +
    566A  PHE*     3.3    11.4    +      -       -      +
    568A  LYS*     1.3    72.4    -      -       -      +
    570A  LYS*     1.3    54.7    +      -       -      +
    572A  GLU*     2.6    29.4    -      -       -      +
    575A  LEU*     4.0    29.5    -      -       +      +
    579A  GLU      5.0     1.0    -      -       -      +
    583A  HIS*     3.4    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 570 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  LEU*     3.9    24.7    -      -       +      +
    409A  ASP*     3.8    33.7    +      -       -      +
    412A  ALA*     4.1    17.3    -      -       +      +
    413A  SER*     6.0     1.0    -      -       -      +
    566A  PHE      2.9    17.3    +      -       -      +
    567A  LYS*     3.6    11.0    -      -       +      +
    568A  LYS      3.1     0.4    -      -       -      -
    569A  ASP*     1.3    76.9    -      -       -      +
    571A  ALA*     1.3    68.0    +      -       -      +
    572A  GLU      3.2     6.6    +      -       -      +
    573A  ARG*     3.7    18.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 571 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    567A  LYS      3.5     8.7    +      -       -      +
    568A  LYS*     3.2    10.8    +      -       -      +
    570A  LYS*     1.3    80.3    -      -       -      +
    572A  GLU*     1.3    59.6    +      -       -      +
    573A  ARG*     3.5    14.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 572 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  LEU*     3.6     1.2    -      -       -      +
    568A  LYS      3.3    11.9    +      -       -      +
    569A  ASP*     2.6    26.3    -      -       -      +
    570A  LYS      3.2     1.4    -      -       -      +
    571A  ALA*     1.3    77.0    -      -       -      +
    573A  ARG*     1.3    63.3    +      -       -      +
    574A  ARG*     3.1    25.1    +      -       -      +
    575A  LEU*     3.4    19.8    -      -       +      +
    576A  ALA      5.0     1.4    +      -       -      -
    579A  GLU*     5.5     3.5    -      -       -      +
----------------------------------------------------------
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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