Contacts of the helix formed by residues 334 - 356 (chain B) in PDB entry 3M0V


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 ASP 334 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333B  THR*     1.3    73.4    -      -       -      +
    335B  PRO*     1.3    67.7    -      -       -      +
    336B  ILE*     2.9    10.7    +      -       -      +
    337B  GLU*     2.9    39.0    +      -       +      +
    338B  SER*     3.0    10.9    +      -       -      -
    406B  TYR*     2.7    30.6    +      -       -      -
    412B  ARG*     2.9    41.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 335 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58B  GLY      3.4    15.5    -      -       -      +
     59B  VAL      3.2    26.9    -      -       -      +
     60B  GLY      3.7    17.7    -      -       -      +
     61B  THR*     3.8    17.5    -      -       -      +
     74B  GLU*     5.2     2.0    -      -       -      +
    330B  HIS*     4.0    16.8    -      -       +      +
    333B  THR      3.1     9.4    -      -       -      +
    334B  ASP*     1.3    87.2    -      -       -      +
    336B  ILE*     1.3    56.3    +      -       -      +
    338B  SER*     3.4     1.7    +      -       -      -
    339B  LEU*     3.0    37.1    +      -       -      +
    412B  ARG*     4.2     8.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 336 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59B  VAL*     5.0     5.2    -      -       +      +
     84B  ASP*     3.9    31.2    -      -       +      +
     87B  VAL*     4.0     7.4    -      -       +      -
     88B  ILE*     3.9    23.7    -      -       +      +
    334B  ASP*     2.9     8.2    +      -       -      +
    335B  PRO*     1.3    76.7    -      -       +      +
    337B  GLU*     1.3    56.8    +      -       -      +
    339B  LEU*     3.4     2.0    +      -       -      +
    340B  ILE*     2.9    45.8    +      -       +      +
    406B  TYR*     3.5    28.7    -      -       +      +
    411B  TYR*     3.7    25.8    -      -       +      -
    412B  ARG*     3.6    21.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 337 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334B  ASP*     2.9    28.1    +      -       +      +
    336B  ILE*     1.3    75.7    -      -       -      +
    338B  SER*     1.3    63.5    +      -       -      +
    340B  ILE*     3.3     6.2    +      -       -      +
    341B  ASN*     3.0    21.8    +      -       -      +
    403B  VAL*     3.9    17.8    -      -       +      +
    406B  TYR*     3.4    28.4    -      -       +      -
    407B  ARG*     2.7    57.8    +      -       -      +
    371C  LEU*     3.6    25.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 338 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293B  ASP*     2.8    27.0    +      -       -      +
    330B  HIS*     3.2    25.4    -      -       -      -
    333B  THR*     2.5    31.3    +      -       -      +
    334B  ASP      3.0     5.4    +      -       -      -
    335B  PRO      3.8     4.0    -      -       -      -
    337B  GLU*     1.3    78.3    -      -       -      +
    339B  LEU*     1.3    54.4    +      -       -      +
    341B  ASN*     3.4     1.3    +      -       -      -
    342B  SER*     2.7    38.3    +      -       -      -
    371C  LEU*     3.7     6.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 339 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54B  VAL*     3.6    22.2    -      -       +      -
     55B  PRO*     4.1     4.9    -      -       +      -
     58B  GLY*     3.7    14.8    -      -       -      +
     59B  VAL*     3.7    16.2    -      -       +      -
     88B  ILE*     3.5    36.8    -      -       +      +
     95B  THR*     5.4     0.3    -      -       -      +
    326B  ILE*     3.7    35.1    -      -       +      +
    328B  GLN*     4.2     0.7    -      -       -      +
    330B  HIS*     3.6    20.6    -      -       +      +
    335B  PRO      3.0    21.1    +      -       -      +
    338B  SER*     1.3    75.7    -      -       -      +
    340B  ILE*     1.3    62.4    +      -       -      +
    342B  SER*     3.8     2.6    -      -       -      -
    343B  ALA*     3.0    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 340 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  ILE*     4.1    15.7    -      -       +      -
     91B  LEU*     4.1    26.5    -      -       +      -
     92B  THR*     3.6    19.6    -      -       +      +
    336B  ILE*     2.9    38.3    +      -       +      +
    337B  GLU*     3.4    11.7    -      -       -      +
    339B  LEU*     1.3    78.9    -      -       -      +
    341B  ASN*     1.3    68.0    +      -       -      +
    343B  ALA*     3.3     2.4    +      -       -      +
    344B  ASN*     3.0    33.6    +      -       -      +
    402B  PRO*     3.2    33.0    -      -       +      +
    403B  VAL*     4.1     3.8    -      -       +      +
    406B  TYR*     4.4    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 341 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293B  ASP*     5.4     3.4    -      -       +      +
    337B  GLU      3.0     8.6    +      -       -      +
    338B  SER*     4.1     2.7    -      -       -      +
    340B  ILE*     1.3    78.5    -      -       -      +
    342B  SER*     1.3    60.0    +      -       -      +
    344B  ASN*     3.4    18.6    -      -       -      +
    345B  GLU*     2.9    32.3    +      -       +      +
    402B  PRO*     5.2     0.7    -      -       -      +
    403B  VAL*     3.4    29.1    +      -       -      +
    371C  LEU*     4.0    23.8    -      -       +      +
    374C  THR*     6.3     0.8    -      -       -      +
    375C  GLU*     4.3    23.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 342 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293B  ASP*     3.3    16.3    -      -       -      +
    294B  ALA*     4.0     7.5    -      -       -      +
    326B  ILE*     4.3     6.3    -      -       -      -
    328B  GLN*     3.0    38.4    +      -       -      -
    338B  SER      2.7    26.8    +      -       -      -
    339B  LEU*     3.8     5.4    -      -       -      -
    340B  ILE      3.2     0.2    -      -       -      -
    341B  ASN*     1.3    69.4    -      -       -      +
    343B  ALA*     1.3    66.7    +      -       -      +
    344B  ASN      3.1     0.2    -      -       -      -
    345B  GLU*     3.2     8.3    +      -       -      +
    346B  ILE*     3.0    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 343 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  VAL*     4.2     8.7    -      -       +      +
     88B  ILE*     5.3     0.2    -      -       +      -
     92B  THR*     4.7     4.9    -      -       -      +
     94B  ALA*     4.4    11.1    -      -       +      +
     95B  THR*     3.9    27.1    -      -       +      -
    326B  ILE*     4.0     9.1    -      -       +      +
    339B  LEU      3.0    18.7    +      -       -      +
    340B  ILE*     3.6     4.7    -      -       -      +
    342B  SER*     1.3    76.2    -      -       -      +
    344B  ASN*     1.3    62.7    +      -       -      +
    346B  ILE*     3.3     7.8    +      -       -      +
    347B  ARG*     3.0    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 344 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92B  THR*     3.9    19.8    -      -       -      +
     94B  ALA*     5.8     1.4    -      -       -      +
    340B  ILE*     3.0    20.4    +      -       -      +
    341B  ASN*     3.4    25.7    -      -       -      +
    343B  ALA*     1.3    79.0    -      -       -      +
    345B  GLU*     1.3    56.8    +      -       -      +
    347B  ARG*     3.2     9.9    +      -       -      +
    348B  ARG*     2.8    40.0    +      -       -      +
    386B  GLU*     5.8     0.2    -      -       -      +
    389B  LEU*     3.7     6.3    -      -       +      +
    393B  ARG*     3.3    31.8    +      -       -      +
    402B  PRO*     3.9    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 345 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294B  ALA      3.3    31.0    -      -       -      +
    295B  GLY*     4.4     6.9    -      -       -      +
    296B  ALA*     5.9     0.2    -      -       -      -
    299B  PRO*     4.6     7.6    -      -       -      +
    302B  LEU*     3.9     7.5    -      -       +      +
    341B  ASN*     2.9    18.9    +      -       +      +
    342B  SER      3.2     6.7    +      -       -      +
    344B  ASN*     1.3    72.7    -      -       -      +
    346B  ILE*     1.3    59.6    +      -       -      +
    348B  ARG*     2.7    46.5    +      -       -      +
    349B  ALA*     2.9    29.1    +      -       -      +
    378C  LYS*     3.9    23.6    +      -       -      +
    382C  ARG*     4.3     7.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 346 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  PHE*     3.6    18.2    -      -       +      -
     52B  VAL*     4.2     8.3    -      -       +      -
    282B  PHE*     3.6    40.8    -      -       +      -
    294B  ALA*     4.0    15.5    -      -       +      -
    302B  LEU*     4.4     9.6    -      -       +      -
    306B  PHE*     3.5    25.4    -      -       +      -
    326B  ILE*     3.7    25.6    -      -       +      -
    342B  SER      3.0    14.6    +      -       -      +
    343B  ALA*     3.6     7.9    -      -       -      +
    345B  GLU*     1.3    75.6    -      -       -      +
    347B  ARG*     1.3    63.1    +      -       -      +
    349B  ALA*     3.4     3.3    +      -       -      +
    350B  TYR*     3.1    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 347 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47B  VAL*     3.1    30.8    +      -       +      +
     48B  GLU*     3.1    30.9    +      -       -      +
     50B  PHE*     3.0    41.6    +      -       +      -
     51B  PHE*     3.8     1.6    -      -       -      -
     52B  VAL*     6.5     0.7    -      -       +      -
     92B  THR      3.7    15.6    +      -       -      -
     93B  ARG*     3.1    20.8    +      -       -      +
     94B  ALA*     3.4    19.9    -      -       +      +
    343B  ALA      3.0    14.5    +      -       -      +
    344B  ASN*     3.2    11.4    +      -       -      +
    346B  ILE*     1.3    74.9    -      -       +      +
    348B  ARG*     1.3    60.5    +      -       -      +
    350B  TYR*     3.6     7.7    -      -       +      +
    351B  ALA*     2.9    30.8    +      -       -      +
    389B  LEU*     3.7    15.3    +      -       +      +
    392B  ALA*     4.3    11.5    -      -       -      +
    393B  ARG*     4.8     8.4    -      -       -      +
    396B  THR*     5.4     0.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 348 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299B  PRO*     6.5     0.2    -      -       -      -
    344B  ASN*     2.8    24.4    +      -       -      +
    345B  GLU*     2.7    45.6    +      -       -      +
    347B  ARG*     1.3    78.2    -      -       -      +
    349B  ALA*     1.3    62.1    +      -       -      +
    351B  ALA*     3.3     2.9    +      -       -      +
    352B  GLN*     3.0    45.1    +      -       -      +
    384B  ASP*     4.4     0.8    +      -       -      -
    385B  VAL*     3.6    14.3    -      -       +      +
    386B  GLU*     2.9    41.4    +      -       -      +
    389B  LEU*     3.4    19.5    -      -       +      +
    382C  ARG*     3.5    42.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 349 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299B  PRO      5.3     1.1    -      -       -      +
    302B  LEU*     3.7    18.8    -      -       +      -
    303B  PHE*     4.0    16.5    -      -       +      +
    306B  PHE*     3.6    25.9    -      -       +      +
    345B  GLU      2.9    14.8    +      -       -      +
    346B  ILE      3.7     1.8    -      -       -      +
    347B  ARG      3.3     0.2    -      -       -      -
    348B  ARG*     1.3    76.8    -      -       -      +
    350B  TYR*     1.3    57.6    +      -       -      +
    352B  GLN*     3.4    12.3    +      -       -      +
    353B  ALA*     3.0    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 350 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46B  LYS*     3.8    27.2    +      -       -      +
     47B  VAL*     4.4     9.6    -      -       +      -
     50B  PHE*     3.7    45.4    -      +       +      -
    306B  PHE*     3.8    29.1    -      +       +      -
    309B  LEU*     6.4     0.4    -      -       +      -
    310B  VAL*     4.3    10.5    -      -       +      -
    313B  GLU*     5.2     6.9    +      -       -      -
    346B  ILE      3.1    17.3    +      -       -      +
    347B  ARG*     3.6     7.0    -      -       -      +
    349B  ALA*     1.3    76.8    -      -       -      +
    351B  ALA*     1.3    62.1    +      -       -      +
    353B  ALA*     3.3     3.6    +      -       -      +
    354B  LEU*     3.0    57.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 351 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     43B  VAL*     4.5     6.5    -      -       +      +
     47B  VAL*     3.9    24.5    -      -       +      -
    347B  ARG      2.9    17.7    +      -       -      +
    348B  ARG      3.6     4.5    -      -       -      +
    350B  TYR*     1.3    77.7    -      -       -      +
    352B  GLN*     1.3    61.9    +      -       -      +
    354B  LEU*     3.1    21.4    +      -       -      +
    355B  LEU*     3.3    14.5    +      -       -      +
    385B  VAL*     3.9    22.9    -      -       +      -
    388B  ILE*     5.1     0.9    -      -       +      -
    389B  LEU*     4.2     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 352 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303B  PHE*     3.6    15.5    -      -       +      +
    348B  ARG*     3.0    38.1    +      -       -      +
    349B  ALA*     3.9     9.5    -      -       -      +
    350B  TYR      3.3     0.2    -      -       -      -
    351B  ALA*     1.3    75.3    -      -       -      +
    353B  ALA*     1.3    63.0    +      -       -      +
    355B  LEU*     3.0    15.6    +      -       -      +
    380B  ALA*     3.3    37.8    -      -       -      +
    381B  TYR*     3.1    43.9    +      -       -      -
    383B  THR      3.2    12.1    +      -       -      -
    384B  ASP*     5.1     0.6    -      -       -      +
    385B  VAL*     3.8    16.1    -      -       +      +
    382C  ARG*     6.4     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 353 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303B  PHE*     3.6    12.0    -      -       +      -
    306B  PHE*     3.6    22.2    -      -       +      +
    307B  ASN*     4.0     7.2    -      -       -      +
    310B  VAL*     3.5    25.8    -      -       +      +
    349B  ALA      3.0    18.3    +      -       -      +
    350B  TYR      3.5     2.5    -      -       -      +
    352B  GLN*     1.3    76.2    -      -       -      +
    354B  LEU*     1.3    62.4    +      -       -      +
    355B  LEU      3.3     0.9    +      -       -      -
    356B  VAL*     3.3    11.3    +      -       -      +
    358B  ARG*     3.1    21.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 354 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38B  VAL*     5.9     1.7    -      -       -      +
     43B  VAL*     4.4    24.8    -      -       +      +
     46B  LYS*     3.8    37.9    -      -       +      +
     47B  VAL*     4.7     0.9    -      -       +      -
    310B  VAL*     3.7    30.5    -      -       +      -
    350B  TYR*     3.0    49.8    +      -       +      +
    351B  ALA*     3.3    12.6    -      -       -      +
    352B  GLN      3.1     0.4    -      -       -      -
    353B  ALA*     1.3    78.9    -      -       -      +
    355B  LEU*     1.3    60.2    +      -       -      +
    356B  VAL      3.6     4.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 355 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  LEU*     4.1    27.1    -      -       +      -
     36B  ARG*     4.3     8.4    +      -       -      +
     38B  VAL*     4.2    20.7    -      -       +      +
     43B  VAL*     3.8    31.6    -      -       +      -
    351B  ALA      3.4    13.2    -      -       -      +
    352B  GLN*     3.0     9.6    +      -       -      +
    354B  LEU*     1.3    77.6    -      -       -      +
    356B  VAL*     1.3    64.9    +      -       -      +
    357B  ASP*     3.3     4.0    +      -       -      +
    380B  ALA*     3.9    13.7    -      -       +      +
    383B  THR*     3.7    38.8    -      -       +      +
    385B  VAL*     3.9    16.2    -      -       +      -
    388B  ILE*     5.2     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 356 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303B  PHE*     4.0     8.1    -      -       +      -
    307B  ASN*     3.9     7.6    -      -       -      +
    352B  GLN      3.5     3.5    +      -       -      +
    353B  ALA      3.3    17.8    +      -       -      +
    354B  LEU      4.2     4.7    -      -       -      +
    355B  LEU*     1.3    77.5    -      -       -      +
    357B  ASP*     1.3    69.4    +      -       -      +
    358B  ARG*     3.0    35.0    +      -       -      +
    361B  LEU*     4.1    11.2    -      -       +      -
    376B  THR*     4.6     7.9    -      -       +      -
    377B  LEU*     3.8    31.9    -      -       +      -
    380B  ALA*     3.6    21.5    -      -       +      -
----------------------------------------------------------
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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