Contacts of the helix formed by residues 456 - 477 (chain I) in PDB entry 6GYS


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 HIS 456 (chain I).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125I  LEU*     5.4     9.0    -      -       +      +
    173I  TYR*     3.1    28.8    +      -       +      +
    242I  THR*     4.5    19.6    +      -       -      +
    302I  LEU*     5.5     9.9    -      -       +      -
    345I  TYR*     4.0    22.0    +      +       -      -
    398I  PHE*     6.0     1.1    -      -       +      -
    402I  ILE*     5.3    11.6    -      -       +      +
    453I  PHE      4.8     2.1    +      -       -      +
    454I  ASN      3.7     0.6    -      -       -      -
    455I  ARG*     1.3    78.3    -      -       -      +
    457I  PRO*     1.3    82.0    -      -       +      +
    458I  MET*     3.0    57.4    +      -       +      +
    459I  VAL*     3.1    23.8    +      -       -      +
    500I  PHE*     3.6     0.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 457 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172I  TYR*     3.2    20.2    -      -       -      +
    241I  ALA      5.2     2.0    -      -       -      +
    242I  THR      3.4    13.0    -      -       -      +
    243I  THR      3.7    19.7    -      -       -      +
    244I  THR*     4.6     3.4    -      -       +      +
    247I  TYR*     3.7    27.8    -      -       +      +
    302I  LEU*     6.4     1.8    -      -       +      -
    456I  HIS*     1.3    95.2    -      -       +      +
    458I  MET*     1.3    57.9    +      -       -      -
    459I  VAL      3.3     0.7    -      -       -      -
    460I  MET*     3.3     4.8    -      -       +      +
    461I  GLN*     2.9    32.1    +      -       -      +
    500I  PHE*     3.8    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 458 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345I  TYR*     6.1     0.7    -      -       -      -
    398I  PHE*     6.3     0.2    -      -       +      -
    401I  PHE*     4.9     3.1    -      -       +      +
    402I  ILE*     3.7    46.2    -      -       +      +
    405I  PHE*     3.5    21.5    -      -       +      -
    406I  GLN*     3.2    34.1    -      -       -      +
    453I  PHE      4.5    13.9    -      -       -      +
    456I  HIS*     3.0    41.3    +      -       +      +
    457I  PRO*     1.3    76.3    -      -       -      +
    459I  VAL*     1.3    60.2    +      -       +      +
    461I  GLN*     3.5     4.0    +      -       -      +
    462I  THR*     2.3    39.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 459 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401I  PHE*     5.3     3.1    -      -       +      -
    405I  PHE*     3.6    33.9    -      -       +      -
    442I  ILE*     5.3     9.4    -      -       +      -
    453I  PHE      4.5    15.0    -      -       -      +
    454I  ASN*     3.4    31.6    -      -       +      +
    456I  HIS      3.1    18.5    +      -       -      +
    458I  MET*     1.3    80.2    -      -       +      +
    460I  MET*     1.3    61.0    +      -       -      +
    463I  ILE*     3.0    41.2    +      -       +      +
    496I  LEU*     5.3    10.1    -      -       +      -
    500I  PHE*     3.8     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 460 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78I  TYR*     3.7    15.9    -      -       +      +
    247I  TYR*     6.0     1.6    -      -       +      -
    457I  PRO*     3.2    12.9    +      -       +      +
    459I  VAL*     1.3    83.2    -      -       -      +
    461I  GLN*     1.3    67.5    +      -       -      +
    463I  ILE*     3.8     2.9    -      -       -      +
    464I  THR*     2.3    35.8    +      -       -      -
    496I  LEU*     4.7    12.3    -      -       -      -
    500I  PHE*     3.5    48.0    -      -       +      -
    503I  LYS*     3.5    39.5    -      -       +      +
    504I  LEU*     3.6     9.9    -      -       -      +
    507I  LEU*     3.9    16.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 461 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73I  THR      3.4     9.7    -      -       -      +
     74I  ASN*     4.5     5.2    -      -       -      +
     78I  TYR*     3.2    46.3    +      -       -      -
    247I  TYR*     3.3    50.0    -      -       -      +
    413I  LYS*     4.4     8.7    +      -       -      +
    457I  PRO      2.9    14.9    +      -       -      +
    458I  MET*     4.2     4.0    -      -       -      +
    460I  MET*     1.3    81.4    -      -       -      +
    462I  THR*     1.3    61.4    +      -       -      +
    464I  THR*     3.3    13.0    -      -       -      -
    465I  ARG*     3.3    19.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 462 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405I  PHE*     3.2    31.7    -      -       +      -
    409I  THR*     3.4    29.4    -      -       +      +
    412I  TRP*     5.6     4.3    -      -       +      -
    413I  LYS*     4.9     3.0    +      -       -      +
    438I  ILE*     4.6    14.8    -      -       +      -
    458I  MET*     2.3    25.8    +      -       -      +
    459I  VAL      3.7     2.2    -      -       -      -
    460I  MET      3.2     0.2    -      -       -      -
    461I  GLN*     1.3    75.4    -      -       -      +
    463I  ILE*     1.3    64.5    +      -       +      +
    465I  ARG*     3.0     9.3    +      -       -      +
    466I  VAL*     3.0    39.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 463 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405I  PHE*     6.2     0.4    -      -       +      -
    438I  ILE*     5.5     2.2    -      -       +      -
    439I  ILE*     4.5    13.9    -      -       +      -
    442I  ILE*     4.1    18.8    -      -       +      -
    459I  VAL*     3.0    19.6    +      -       +      +
    460I  MET      4.1     2.2    -      -       -      +
    462I  THR*     1.3    77.6    -      -       +      +
    464I  THR*     1.3    59.8    +      -       -      +
    466I  VAL*     4.1    14.8    -      -       +      -
    467I  VAL*     2.9    43.0    +      -       +      +
    489I  LEU*     6.3     1.6    -      -       +      -
    492I  LEU*     3.9    32.1    -      -       +      -
    493I  THR*     5.1     7.0    -      -       -      +
    496I  LEU*     4.5    15.5    -      -       +      -
    507I  LEU*     4.4    15.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 464 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73I  THR*     3.3    38.0    -      -       +      +
     77I  LEU*     4.4     7.4    -      -       +      -
     78I  TYR*     2.8    28.8    +      -       +      +
    460I  MET      2.3    29.3    +      -       -      -
    461I  GLN*     3.3    13.4    -      -       -      -
    462I  THR      3.1     0.2    -      -       -      -
    463I  ILE*     1.3    76.9    -      -       -      +
    465I  ARG*     1.3    53.3    +      -       -      +
    467I  VAL*     4.3     1.6    -      -       -      +
    468I  SER*     2.3    34.2    +      -       -      +
    507I  LEU*     4.0    15.8    -      -       +      +
    510I  LEU*     5.3     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 465 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69I  GLU*     3.2    37.7    +      -       -      +
     70I  TYR*     5.4     1.8    -      -       -      +
     73I  THR*     3.2    27.9    +      -       -      -
     74I  ASN*     4.6    17.4    -      -       -      +
    356I  ASP*     5.5     2.8    +      -       -      -
    359I  LEU*     4.4    25.0    -      -       -      +
    412I  TRP*     3.9    18.7    -      -       +      -
    413I  LYS*     3.7    33.4    -      -       -      +
    416I  LYS*     4.2    18.1    -      -       -      +
    461I  GLN*     3.4    16.6    +      -       -      +
    462I  THR      3.0     6.8    +      -       -      +
    464I  THR*     1.3    75.7    -      -       -      +
    466I  VAL*     1.3    62.1    +      -       -      +
    468I  SER      3.4     0.2    +      -       -      -
    469I  PHE*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 466 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412I  TRP*     3.7    32.3    -      -       +      -
    435I  SER*     4.8    11.7    -      -       -      +
    438I  ILE*     6.1     3.6    -      -       +      -
    439I  ILE*     4.4    14.6    -      -       +      -
    462I  THR*     3.0    29.0    +      -       +      +
    463I  ILE*     3.2    16.1    +      -       +      +
    465I  ARG*     1.3    74.7    -      -       -      +
    467I  VAL*     1.3    58.5    +      -       -      +
    470I  ILE*     2.9    44.3    +      -       +      +
    489I  LEU*     3.8    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 467 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463I  ILE*     2.9    30.3    +      -       +      +
    464I  THR      4.3     2.2    -      -       -      +
    466I  VAL*     1.3    71.6    -      -       -      +
    468I  SER*     1.3    66.1    +      -       -      +
    471I  SER*     3.1    25.3    +      -       -      +
    489I  LEU*     3.7    29.2    -      -       +      -
    493I  THR*     4.0    10.5    -      -       -      +
    507I  LEU*     3.8    26.9    -      -       +      -
    510I  LEU*     5.5     3.4    -      -       +      -
    511I  THR*     3.3    39.2    -      -       +      +
    514I  LEU*     3.8     4.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 468 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65I  TRP*     3.5    22.9    -      -       -      -
     68I  TYR*     5.1     0.2    -      -       -      -
     69I  GLU*     4.1     6.1    -      -       -      -
     73I  THR*     3.4    18.8    -      -       -      +
    464I  THR      2.3    27.0    +      -       -      -
    465I  ARG      3.4     5.1    +      -       -      -
    466I  VAL      3.1     0.4    -      -       -      -
    467I  VAL*     1.3    82.4    -      -       -      +
    469I  PHE*     1.3    59.3    +      -       -      +
    472I  PHE*     2.9    27.5    +      -       -      +
    510I  LEU*     4.3    10.6    -      -       -      +
    514I  LEU*     3.8    13.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 469 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62I  LEU*     3.6    32.1    -      -       +      -
     65I  TRP*     3.3    28.3    -      +       -      +
     69I  GLU*     4.3     5.4    -      -       -      +
    412I  TRP*     4.9     4.0    -      +       +      -
    416I  LYS*     4.7    18.2    -      -       +      -
    419I  LEU*     4.5    24.7    -      -       +      -
    420I  ILE*     4.7    12.1    -      -       +      -
    428I  LEU*     5.0     4.0    -      -       +      -
    431I  VAL*     4.7    15.5    -      -       +      -
    465I  ARG      2.9    18.2    +      -       -      +
    466I  VAL      4.5     0.2    -      -       -      +
    468I  SER*     1.3    72.0    -      -       -      +
    470I  ILE*     1.3    73.4    +      -       +      +
    472I  PHE*     3.9     9.4    -      +       -      -
    473I  TYR*     2.8    47.7    +      +       +      +
----------------------------------------------------------
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Residues in contact with ILE 470 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    412I  TRP*     4.7     2.7    -      -       +      -
    428I  LEU*     6.4     1.6    -      -       +      -
    431I  VAL*     4.2    24.2    -      -       +      -
    432I  ILE*     5.6     4.9    -      -       +      -
    435I  SER*     4.6     2.0    -      -       -      +
    466I  VAL*     2.9    31.3    +      -       +      +
    469I  PHE*     1.3    84.1    -      -       +      +
    471I  SER*     1.3    57.8    +      -       -      +
    473I  TYR*     4.0     1.7    -      -       +      -
    474I  GLN*     2.9    28.8    +      -       -      +
    482I  VAL*     3.3    32.3    -      -       +      +
    485I  LEU*     3.7    38.1    -      -       +      -
    486I  LEU*     4.5     2.0    -      -       +      +
    489I  LEU*     3.7    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 471 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    467I  VAL*     3.1    27.1    +      -       -      +
    468I  SER      3.6     1.5    +      -       -      -
    469I  PHE      3.3     0.2    -      -       -      -
    470I  ILE*     1.3    77.8    -      -       -      +
    472I  PHE*     1.3    57.5    +      -       -      +
    474I  GLN*     3.2     9.3    +      -       -      +
    475I  ILE*     3.0    32.0    +      -       -      +
    486I  LEU*     3.4    21.4    -      -       -      +
    489I  LEU*     3.9     4.3    -      -       -      +
    511I  THR*     4.8     6.1    +      -       -      +
    514I  LEU*     4.1    23.6    -      -       -      +
    515I  SER*     5.3     1.8    -      -       -      -
    518I  LYS*     5.2     1.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 472 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61I  LEU*     3.6    21.1    -      -       +      -
     62I  LEU*     3.6    18.2    -      -       +      -
     65I  TRP*     3.4    66.6    -      +       +      -
    468I  SER      2.9    20.3    +      -       -      +
    469I  PHE*     3.1    14.3    +      +       -      +
    471I  SER*     1.3    77.1    -      -       -      +
    473I  TYR*     1.3    58.1    +      -       -      +
    475I  ILE*     3.3    24.3    -      -       +      +
    476I  PHE*     3.1    54.8    -      +       -      -
    514I  LEU*     5.2     1.8    -      -       +      +
    517I  LEU*     4.9     4.5    -      -       +      -
    537I  VAL*     5.0     6.7    -      -       +      -
    541I  LEU*     5.1     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 473 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58I  LEU*     4.6    25.1    -      -       +      +
     62I  LEU*     5.6     4.5    -      -       +      -
    419I  LEU*     5.8     3.1    -      -       +      -
    428I  LEU*     3.4    39.7    -      -       +      +
    469I  PHE*     2.8    41.7    +      +       +      +
    470I  ILE*     4.1     4.7    -      -       +      +
    472I  PHE*     1.3    75.5    -      -       -      +
    474I  GLN*     1.3    60.4    +      -       -      +
    475I  ILE      3.2     1.8    -      -       -      -
    476I  PHE*     4.7     2.7    -      +       +      +
    477I  VAL*     2.9    74.4    +      -       +      +
    479I  SER*     4.7     1.1    -      -       -      -
    482I  VAL*     3.6    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 474 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    470I  ILE      2.9    20.0    +      -       -      +
    471I  SER*     3.3    11.9    -      -       -      +
    473I  TYR*     1.3    75.3    -      -       -      +
    475I  ILE*     1.3    54.9    +      -       -      -
    477I  VAL      3.4     9.3    -      -       -      +
    478I  GLU*     3.3    18.5    -      -       -      +
    479I  SER      3.9     1.8    +      -       -      -
    482I  VAL*     3.2    15.7    +      -       +      +
    483I  LYS*     3.1    42.7    -      -       -      +
    486I  LEU*     3.6    23.4    -      -       +      +
    518I  LYS*     2.1    54.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 475 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    471I  SER      3.0    17.2    +      -       -      +
    472I  PHE*     3.3    39.9    -      -       +      +
    473I  TYR      3.2     0.6    -      -       -      -
    474I  GLN*     1.3    78.1    -      -       -      +
    476I  PHE*     1.3    80.7    +      -       +      +
    478I  GLU*     4.9     2.3    -      -       -      +
    514I  LEU*     4.0    13.5    -      -       +      +
    517I  LEU*     3.7    27.1    -      -       +      +
    518I  LYS*     3.7    36.0    +      -       +      +
    521I  TRP*     3.5    35.4    -      -       +      -
    522I  ASP*     4.8     3.1    -      -       -      +
    537I  VAL*     5.4     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 476 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55I  LYS*     2.4    24.9    +      -       -      +
     57I  TYR*     3.5    21.2    +      +       +      +
     58I  LEU*     5.0     7.6    -      -       +      -
     61I  LEU*     3.5    37.7    -      -       +      -
    472I  PHE*     3.1    52.0    -      +       -      -
    473I  TYR*     3.5     4.4    +      +       +      +
    475I  ILE*     1.3    88.8    -      -       +      +
    477I  VAL*     1.3    60.1    +      -       +      +
    478I  GLU*     3.9     3.2    +      -       -      +
    521I  TRP*     3.4    54.5    +      +       -      +
    537I  VAL*     4.0    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 477 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55I  LYS*     3.1    26.5    -      -       -      +
     58I  LEU*     4.9     4.0    -      -       +      -
    473I  TYR*     2.9    69.7    +      -       +      +
    474I  GLN*     3.4    11.5    +      -       -      -
    476I  PHE*     1.3    75.4    -      -       +      +
    478I  GLU*     1.3    59.9    +      -       -      +
    479I  SER*     2.9    24.7    +      -       -      +
    482I  VAL*     4.8     0.2    -      -       -      +
----------------------------------------------------------
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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