Contacts of the helix formed by residues 244 - 294 (chain I) in PDB entry 5A31


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 PHE 244 (chain I).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240I  LEU*     3.5    23.3    +      -       +      +
    241I  LEU      3.9     3.8    -      -       -      -
    242I  TYR      3.3     0.6    -      -       -      -
    243I  SER*     1.3   106.0    +      -       -      +
    245I  LEU*     1.3    57.4    +      -       -      +
    247I  GLU*     3.2    29.2    -      -       +      +
    248I  VAL*     3.0    30.7    +      -       -      +
    374I  GLN      5.2     2.9    -      -       -      -
    375I  LYS*     4.7    15.3    -      -       +      -
    378I  PRO*     4.2    25.1    -      -       +      -
    379I  LEU*     3.9    31.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 245 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118I  VAL*     3.7    26.0    -      -       +      -
    122I  SER*     3.7    20.6    -      -       -      +
    173I  LEU*     3.4    33.0    -      -       +      -
    213I  ASP      5.7     3.1    -      -       -      +
    214I  LEU*     3.5    20.6    -      -       +      -
    241I  LEU      3.6    10.9    +      -       -      +
    242I  TYR*     3.8    11.0    -      -       +      +
    243I  SER      3.5     1.2    -      -       -      -
    244I  PHE*     1.3    72.8    -      -       -      +
    246I  PRO*     1.4    67.4    -      -       +      +
    248I  VAL*     3.2     5.3    +      -       +      -
    249I  THR*     2.6    44.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 246 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242I  TYR      5.4     0.2    -      -       -      +
    243I  SER      4.6     4.3    -      -       -      +
    244I  PHE*     4.5     0.7    -      -       -      -
    245I  LEU*     1.4    96.9    -      -       +      +
    247I  GLU*     1.3    75.1    +      -       -      +
    249I  THR*     3.5     8.9    -      -       -      +
    250I  ARG*     3.0    28.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 247 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243I  SER      4.5     1.4    -      -       -      +
    244I  PHE*     3.2    37.5    -      -       +      +
    245I  LEU      3.1     0.2    -      -       -      -
    246I  PRO*     1.3    96.9    -      -       -      +
    248I  VAL*     1.3    54.4    +      -       -      +
    250I  ARG*     3.7     1.4    -      -       -      +
    251I  MET*     2.8    39.8    +      -       -      +
    375I  LYS*     3.8    31.9    +      -       +      +
    376I  TYR*     3.4    38.9    -      -       +      +
    379I  LEU*     3.5    12.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 248 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173I  LEU*     5.0    14.4    -      -       +      -
    175I  ILE*     6.6     0.4    -      -       +      -
    195I  ILE*     3.9    23.6    -      -       +      -
    214I  LEU*     6.4     0.4    -      -       +      -
    240I  LEU      5.1     3.6    -      -       -      +
    241I  LEU*     5.2    16.8    -      -       +      +
    244I  PHE      3.0    17.5    +      -       -      +
    245I  LEU*     3.7     6.3    -      -       +      +
    247I  GLU*     1.3    77.6    -      -       -      +
    249I  THR*     1.3    67.4    +      -       -      +
    251I  MET*     4.3    15.5    -      -       +      -
    252I  ALA*     2.9    31.6    +      -       +      +
    379I  LEU*     4.0    25.6    -      -       +      -
    544I  ILE*     4.4     7.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 249 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125I  LEU*     6.6     0.2    -      -       +      -
    173I  LEU*     4.2    19.8    -      -       +      +
    190I  TYR*     3.8    19.2    +      -       -      +
    245I  LEU*     2.6    40.8    +      -       -      +
    246I  PRO*     3.5     9.5    -      -       -      +
    248I  VAL*     1.3    76.7    -      -       -      +
    250I  ARG*     1.3    62.0    +      -       +      +
    252I  ALA*     3.8     2.3    -      -       -      +
    253I  ARG*     3.1    39.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 250 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125I  LEU*     6.6     0.4    -      -       -      -
    128I  PHE*     3.2    41.2    +      -       -      +
    135I  SER*     5.7     1.8    +      -       -      +
    246I  PRO      3.0    16.2    +      -       -      +
    247I  GLU      3.7     2.5    -      -       -      +
    249I  THR*     1.3    79.6    -      -       +      +
    251I  MET*     1.3    66.6    +      -       -      +
    253I  ARG*     3.2    12.7    +      -       +      +
    254I  LYS*     3.1    31.5    +      -       -      +
    369I  MET*     3.6    18.2    -      -       +      +
    376I  TYR*     4.5    10.1    +      -       -      -
    645O  HIS      5.0     4.6    +      -       -      -
    646O  MET*     3.7    19.4    +      -       -      +
    649O  GLU*     3.3    35.0    +      -       -      +
    650O  PRO*     5.7     1.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 251 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195I  ILE*     3.3    34.3    -      -       +      -
    247I  GLU      2.8    21.1    +      -       -      +
    248I  VAL*     4.3    11.0    -      -       +      -
    250I  ARG*     1.3    73.2    -      -       -      +
    252I  ALA*     1.3    62.6    +      -       -      +
    254I  LYS*     3.4     5.0    +      -       -      +
    255I  PHE*     3.1    49.3    +      -       +      -
    366I  LEU*     4.8     2.2    -      -       +      -
    369I  MET*     4.3    15.8    -      -       -      +
    376I  TYR*     4.5     7.9    -      -       +      -
    379I  LEU*     4.3    22.0    -      -       +      +
    381I  LEU*     4.1    24.9    -      -       +      -
    540I  PRO*     4.6     9.2    -      -       +      -
    544I  ILE*     4.1    15.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 252 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173I  LEU*     5.4     0.7    -      -       +      -
    189I  ALA*     4.1    25.8    -      -       +      -
    190I  TYR*     4.6     4.7    -      -       +      -
    193I  PHE*     4.3     8.4    -      -       +      -
    195I  ILE*     4.2    16.4    -      -       +      -
    248I  VAL*     2.9    21.4    +      -       +      +
    249I  THR*     3.8     2.9    -      -       -      +
    251I  MET*     1.3    76.9    -      -       -      +
    253I  ARG*     1.3    63.5    +      -       -      +
    255I  PHE*     3.3     6.9    +      -       -      +
    256I  THR*     2.8    29.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 253 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135I  SER      5.0     7.2    -      -       -      +
    136I  ASN*     2.7    35.6    +      -       -      +
    137I  LEU      4.9     3.1    -      -       -      +
    138I  LEU*     3.6    39.8    -      -       +      +
    169I  GLY      3.3    25.5    +      -       -      -
    170I  ASP*     5.2     0.6    -      -       -      +
    171I  VAL      3.7    18.2    +      -       -      +
    172I  ARG*     5.5     0.6    -      -       -      +
    190I  TYR*     3.6    20.6    +      -       +      +
    249I  THR*     3.1    30.4    +      -       -      +
    250I  ARG*     3.2    12.3    +      -       -      +
    252I  ALA*     1.3    73.4    -      -       -      +
    254I  LYS*     1.3    65.8    +      -       -      +
    256I  THR*     3.4     3.1    -      -       -      -
    257I  HIS*     3.1    22.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 254 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    135I  SER*     4.1    27.8    +      -       -      +
    250I  ARG*     3.1    23.2    +      -       -      +
    251I  MET      3.6     7.0    -      -       -      +
    253I  ARG*     1.3    77.3    -      -       +      +
    255I  PHE*     1.3    60.2    +      -       -      +
    257I  HIS*     3.0     9.0    +      -       -      +
    258I  ILE*     2.8    38.9    +      -       +      +
    362I  HIS*     3.9    32.5    +      -       +      +
    365I  GLU*     4.0    29.7    -      -       +      +
    366I  LEU*     4.6    11.7    -      -       +      +
    369I  MET*     3.5    31.4    -      -       +      +
    649O  GLU*     4.8     3.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 255 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193I  PHE*     3.5    31.2    -      +       +      -
    251I  MET*     3.1    44.1    +      -       +      +
    252I  ALA      3.7     2.9    -      -       -      +
    254I  LYS*     1.3    77.5    -      -       -      +
    256I  THR*     1.3    65.9    +      -       -      +
    258I  ILE*     3.0    12.9    +      -       +      +
    259I  SER*     2.7    27.1    +      -       -      -
    366I  LEU*     3.9    26.9    -      -       +      -
    381I  LEU*     3.6    27.4    -      -       +      -
    386I  ILE*     6.0     0.2    -      -       +      -
    533I  ILE*     6.3     0.4    -      -       +      -
    536I  CYS*     4.8     1.8    -      -       +      -
    537I  LEU*     3.7    42.3    -      -       +      +
    540I  PRO*     4.0    15.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 256 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138I  LEU*     3.7    25.2    -      -       +      +
    139I  LEU*     3.8     2.0    -      -       +      -
    190I  TYR*     4.6     6.9    -      -       -      -
    192I  MET*     3.6    41.6    -      -       +      +
    193I  PHE*     3.5    22.4    +      -       -      +
    252I  ALA*     2.8    19.8    +      -       -      +
    253I  ARG      3.4     9.0    -      -       -      -
    255I  PHE*     1.3    75.5    -      -       -      +
    257I  HIS*     1.3    58.5    +      -       -      +
    259I  SER*     3.2     6.1    +      -       -      -
    260I  ALA*     3.1    26.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 257 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134I  GLU*     4.8     9.7    +      -       -      +
    137I  LEU*     3.5    17.5    -      -       -      +
    138I  LEU      3.4    14.4    -      -       -      +
    139I  LEU      3.4    22.2    +      -       -      -
    140I  PRO*     3.1    39.0    -      -       +      +
    253I  ARG      3.4     6.1    -      -       -      +
    254I  LYS*     3.0    13.2    +      -       -      +
    256I  THR*     1.3    78.4    -      -       -      +
    258I  ILE*     1.3    65.1    +      -       -      +
    260I  ALA*     3.4     4.2    +      -       -      +
    261I  LEU*     3.2    23.9    +      -       +      +
    358I  SER*     5.9     1.3    -      -       -      -
    362I  HIS*     3.1    46.8    +      +       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 258 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254I  LYS*     2.8    31.1    +      -       +      +
    255I  PHE*     3.5    13.5    -      -       +      +
    257I  HIS*     1.3    72.0    -      -       -      +
    259I  SER*     1.3    67.0    +      -       -      +
    261I  LEU*     3.0    13.8    +      -       -      +
    262I  LEU*     3.0    22.8    +      -       +      +
    359I  LEU*     4.1    19.1    -      -       +      -
    362I  HIS*     3.9    26.5    -      -       +      +
    363I  LEU*     3.8    26.5    -      -       +      -
    366I  LEU*     4.0    20.4    -      -       +      -
    533I  ILE*     4.3    18.4    -      -       +      -
    537I  LEU*     4.8     5.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 259 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192I  MET      6.0     0.9    -      -       -      -
    193I  PHE*     5.5     6.0    -      -       -      -
    255I  PHE      2.7    16.4    +      -       -      -
    256I  THR*     3.5     7.4    -      -       -      -
    257I  HIS      3.2     0.2    -      -       -      -
    258I  ILE*     1.3    80.6    -      -       -      +
    260I  ALA*     1.3    61.1    +      -       -      +
    262I  LEU*     3.2    14.4    +      -       -      +
    263I  GLN*     3.1    28.1    +      -       -      +
    537I  LEU*     4.2    18.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 260 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139I  LEU*     3.8    19.5    -      -       +      -
    140I  PRO*     3.6    27.6    -      -       +      -
    155I  ILE*     5.9     0.7    -      -       +      -
    156I  PHE*     3.4    28.0    -      -       +      -
    256I  THR      3.1     6.9    +      -       -      +
    257I  HIS      3.7     2.2    -      -       -      +
    258I  ILE      3.2     0.2    -      -       -      -
    259I  SER*     1.3    74.4    -      -       -      +
    261I  LEU*     1.3    59.8    +      -       -      +
    263I  GLN*     3.2     9.1    +      -       -      +
    264I  TYR*     2.9    23.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 261 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140I  PRO*     3.7    22.7    -      -       +      -
    142I  LEU*     3.8    19.3    -      -       +      -
    257I  HIS*     3.2    27.5    +      -       +      +
    258I  ILE*     3.0    13.9    +      -       -      +
    260I  ALA*     1.3    72.9    -      -       -      +
    262I  LEU*     1.3    57.5    +      -       -      +
    264I  TYR*     3.0     3.8    +      -       -      +
    265I  ILE*     2.7    38.2    +      -       -      +
    355I  GLY*     4.4     6.9    -      -       -      +
    358I  SER*     3.5    20.0    -      -       -      +
    359I  LEU*     3.5    43.5    -      -       +      +
    362I  HIS*     4.1     7.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 262 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258I  ILE*     3.0    20.9    +      -       +      +
    259I  SER*     3.2    14.6    +      -       -      +
    261I  LEU*     1.3    76.0    -      -       -      +
    263I  GLN*     1.3    61.0    +      -       -      +
    265I  ILE*     3.1    18.5    -      -       +      +
    266I  ASN*     2.9    25.8    +      -       -      +
    359I  LEU*     3.9    12.8    -      -       +      -
    529I  MET*     4.9     2.5    -      -       +      -
    530I  GLU*     3.7    27.8    -      -       +      +
    533I  ILE*     3.6    50.5    -      -       +      -
    534I  ASP*     3.9    14.6    -      -       -      +
    537I  LEU*     5.5     2.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 263 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102I  HIS*     4.5    18.9    +      -       -      -
    103I  SER      5.4     2.2    +      -       -      -
    153I  SER*     4.5    14.9    +      -       -      -
    155I  ILE*     5.3     2.1    -      -       -      +
    156I  PHE*     3.7    22.1    -      -       +      -
    259I  SER*     3.1    19.0    +      -       -      +
    260I  ALA*     3.2    13.6    +      -       -      +
    262I  LEU*     1.3    74.9    -      -       -      +
    264I  TYR*     1.3    52.8    +      -       -      +
    266I  ASN*     3.2     7.4    +      -       -      +
    267I  LEU*     2.7    37.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 264 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142I  LEU*     3.2    45.2    -      -       +      +
    143I  PRO*     3.3    17.7    +      -       -      +
    145I  LEU*     3.5    28.0    -      -       +      -
    156I  PHE*     4.1    26.0    -      +       +      -
    260I  ALA      2.9    14.1    +      -       -      +
    261I  LEU*     3.0     8.0    +      -       +      +
    263I  GLN*     1.3    73.5    -      -       -      +
    265I  ILE*     1.3    55.4    +      -       -      +
    267I  LEU*     3.7     3.5    -      -       -      +
    268I  SER*     2.2    52.8    +      -       -      -
    351I  HIS*     2.8    49.3    +      -       +      +
    354I  SER*     4.2     4.0    +      -       -      -
    355I  GLY*     4.2    10.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 265 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261I  LEU      2.7    20.0    +      -       -      +
    262I  LEU*     3.1    34.3    -      -       +      +
    264I  TYR*     1.3    74.3    -      -       -      +
    266I  ASN*     1.3    59.1    +      -       -      +
    268I  SER*     3.6     6.8    -      -       -      -
    269I  LEU*     3.4    17.7    +      -       -      +
    352I  LEU*     3.5    19.5    -      -       +      +
    355I  GLY*     5.1     7.4    -      -       -      -
    356I  SER*     3.7    13.0    -      -       -      +
    359I  LEU*     4.1    13.5    -      -       +      -
    396I  PHE*     3.3    31.9    -      -       +      -
    526I  LYS*     3.5     9.5    +      -       -      -
    529I  MET*     3.6    21.5    -      -       +      -
    530I  GLU*     4.3     5.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 266 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262I  LEU      2.9    20.6    +      -       -      +
    263I  GLN*     3.4     6.7    -      -       -      +
    265I  ILE*     1.3    75.5    -      -       -      +
    267I  LEU*     1.3    62.9    +      -       -      +
    270I  THR*     3.5    19.6    +      -       -      -
    526I  LYS*     3.2    30.1    +      -       -      +
    530I  GLU*     2.7    24.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 267 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145I  LEU*     3.4    33.4    -      -       +      -
    147I  LYS*     4.6    13.7    -      -       +      +
    149I  TYR      4.3    15.3    -      -       -      +
    150I  SER*     4.8    21.1    -      -       -      +
    156I  PHE*     4.0    27.4    -      -       +      -
    157I  SER*     5.4     3.1    -      -       -      +
    263I  GLN      2.7    19.6    +      -       -      +
    264I  TYR*     3.7     4.0    -      -       -      +
    266I  ASN*     1.3    72.0    -      -       -      +
    268I  SER*     1.3    65.9    +      -       -      +
    270I  THR*     3.1    11.0    +      -       +      -
    271I  CYS*     3.0    20.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 268 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145I  LEU*     4.1    12.1    -      -       -      -
    264I  TYR*     2.2    57.9    +      -       -      -
    265I  ILE*     3.6     9.2    -      -       -      -
    266I  ASN      3.3     0.2    -      -       -      -
    267I  LEU*     1.3    71.7    -      -       -      +
    269I  LEU*     1.3    62.3    +      -       -      +
    271I  CYS*     3.3     5.4    +      -       -      +
    272I  MET*     3.3    26.0    +      -       -      +
    347I  LEU*     4.3     2.9    -      -       -      +
    351I  HIS*     4.3     7.0    -      -       -      -
    352I  LEU*     4.2    23.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 269 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265I  ILE      3.4     1.4    +      -       -      +
    267I  LEU      3.2     0.2    -      -       -      -
    268I  SER*     1.3    77.6    -      -       -      +
    270I  THR*     1.3    62.3    +      -       -      +
    272I  MET*     3.4    15.3    +      -       +      +
    273I  CYS*     3.2    21.3    +      -       -      +
    352I  LEU*     3.6    39.7    -      -       +      -
    396I  PHE*     3.9    10.1    -      -       +      -
    479I  LEU*     4.2     3.9    -      -       +      +
    522I  LEU*     3.8    23.3    -      -       +      -
    523I  HIS*     3.5    41.1    -      -       +      +
    526I  LYS*     3.0    39.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 270 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266I  ASN*     3.5    16.8    +      -       -      -
    267I  LEU*     3.1    16.5    +      -       +      +
    269I  LEU*     1.3    79.2    -      -       -      +
    271I  CYS*     1.3    62.5    +      -       -      +
    273I  CYS*     3.3    14.4    +      -       -      +
    274I  GLU*     3.3    31.8    +      -       +      +
    523I  HIS*     5.3     6.4    +      -       -      -
    526I  LYS*     5.1     1.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 271 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145I  LEU*     4.4     9.4    -      -       +      -
    146I  PRO*     4.2    15.9    -      -       -      -
    147I  LYS*     3.4    42.0    -      -       +      -
    267I  LEU*     3.0    12.7    +      -       +      +
    268I  SER      3.6     9.6    -      -       -      +
    269I  LEU      3.3     0.2    -      -       -      -
    270I  THR*     1.3    80.2    -      -       -      +
    272I  MET*     1.3    59.8    +      -       -      +
    274I  GLU*     3.4    22.6    +      -       -      +
    275I  ALA*     3.9     4.0    +      -       -      +
    347I  LEU*     3.6    17.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 272 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268I  SER*     3.3     8.7    +      -       -      +
    269I  LEU*     3.6    27.4    -      -       +      +
    270I  THR      3.3     0.6    -      -       -      -
    271I  CYS*     1.3    71.9    -      -       -      +
    273I  CYS*     1.3    65.7    -      -       -      +
    274I  GLU      3.1     1.3    +      -       -      -
    275I  ALA*     3.2    15.4    +      -       -      +
    276I  TRP*     3.5     8.5    +      -       -      +
    344I  ILE*     4.0    16.0    -      -       +      +
    347I  LEU*     3.3    30.3    -      -       +      +
    348I  VAL*     3.4    32.5    -      -       +      -
    352I  LEU*     4.1    14.4    -      -       +      -
    403I  LEU*     3.9    19.7    -      -       +      -
    479I  LEU*     3.6    31.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 273 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269I  LEU      3.2    10.5    +      -       -      +
    270I  THR*     3.4    18.8    -      -       -      +
    272I  MET*     1.3    80.9    -      -       -      +
    274I  GLU*     1.3    68.1    +      -       -      +
    276I  TRP*     3.4    23.0    +      -       +      +
    277I  GLU*     3.7    20.3    +      -       -      +
    479I  LEU*     4.1    26.2    -      -       +      +
    480I  LYS*     6.4     0.2    -      -       -      -
    523I  HIS*     5.2     5.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 274 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147I  LYS*     5.6     5.8    -      -       +      -
    270I  THR*     3.3    22.6    +      -       +      +
    271I  CYS*     3.4    18.2    -      -       -      +
    272I  MET      3.1     0.8    -      -       -      -
    273I  CYS*     1.3    79.8    -      -       -      +
    275I  ALA*     1.3    66.5    +      -       -      +
    277I  GLU*     2.9    48.2    +      -       -      +
    278I  GLU*     4.9     0.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 275 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271I  CYS      3.9     3.8    +      -       -      +
    272I  MET*     3.2    11.0    +      -       -      +
    274I  GLU*     1.3    78.3    -      -       -      +
    276I  TRP*     1.3    61.9    +      -       -      +
    277I  GLU      3.1     1.4    +      -       -      -
    278I  GLU*     3.6     9.0    +      -       -      +
    340I  SER*     3.2    41.3    +      -       -      +
    343I  SER*     4.1    17.5    -      -       -      -
    344I  ILE*     4.0     7.0    -      -       +      +
    347I  LEU*     6.2     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 276 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272I  MET      3.5     4.9    +      -       -      +
    273I  CYS*     3.4    14.7    +      -       +      +
    274I  GLU      3.3     1.2    -      -       -      -
    275I  ALA*     1.3    76.6    -      -       -      +
    277I  GLU*     1.3    73.7    +      -       +      +
    278I  GLU      3.4     0.2    -      -       -      -
    279I  ILE*     3.1    41.6    +      -       +      +
    280I  LEU*     3.3    50.8    +      -       +      -
    340I  SER*     5.2     0.2    -      -       -      -
    341I  TYR*     4.7     0.4    -      +       -      -
    344I  ILE*     3.9    17.4    -      -       +      +
    473I  GLU*     4.6     5.0    +      -       +      +
    475I  VAL*     4.0    15.7    -      -       +      +
    476I  GLY*     2.9    42.6    -      -       -      +
    479I  LEU*     4.6    11.4    -      -       +      -
    480I  LYS*     4.0    31.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 277 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273I  CYS*     3.8    15.9    -      -       -      +
    274I  GLU*     2.9    46.2    -      -       -      +
    275I  ALA      3.1     1.4    +      -       -      -
    276I  TRP*     1.3    87.7    -      -       +      +
    278I  GLU*     1.3    61.3    +      -       +      +
    279I  ILE      3.4     0.2    +      -       -      -
    280I  LEU*     3.7    10.6    +      -       -      +
    281I  MET*     3.0    21.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 278 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274I  GLU      6.0     0.7    -      -       -      +
    275I  ALA      3.6     4.1    +      -       -      +
    276I  TRP      3.4     0.6    -      -       -      -
    277I  GLU*     1.3    75.8    -      -       +      +
    279I  ILE*     1.3    63.4    -      -       -      +
    281I  MET*     3.0    35.1    -      -       +      +
    282I  GLN*     3.9    10.9    +      -       -      +
    336I  SER*     4.9    15.5    -      -       -      +
    339I  SER*     5.2     3.6    +      -       -      -
    340I  SER*     4.0    17.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 279 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276I  TRP*     3.1    47.5    +      -       +      +
    277I  GLU      3.3     0.6    -      -       -      -
    278I  GLU*     1.3    79.0    -      -       -      +
    280I  LEU*     1.3    70.8    +      -       -      +
    281I  MET      3.3     0.5    +      -       -      -
    282I  GLN*     3.6    14.5    +      -       -      +
    336I  SER      4.1     1.3    -      -       -      +
    337I  ILE*     3.1    59.0    -      -       +      +
    340I  SER*     3.7    17.9    +      -       -      +
    341I  TYR*     4.1    20.2    -      -       +      +
    473I  GLU*     2.8    31.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 280 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276I  TRP*     3.3    45.2    +      -       +      -
    277I  GLU      4.0     9.2    -      -       -      +
    278I  GLU      3.4     0.4    -      -       -      -
    279I  ILE*     1.3    85.6    -      -       -      +
    281I  MET*     1.3    67.9    +      -       +      +
    282I  GLN      3.1     1.6    +      -       -      -
    283I  MET      3.7     2.9    +      -       -      -
    284I  ASP*     3.0    51.4    -      -       -      +
    473I  GLU*     4.5    10.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 281 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277I  GLU*     3.0    29.4    -      -       +      +
    278I  GLU*     3.0    30.3    -      -       +      +
    280I  LEU*     1.3    84.1    -      -       +      +
    282I  GLN*     1.3    83.9    +      -       +      +
    283I  MET      3.5     0.2    +      -       -      -
    284I  ASP*     3.6     9.7    +      -       -      +
    285I  SER*     3.9    12.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 282 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278I  GLU*     3.9    14.6    +      -       -      +
    279I  ILE*     3.6     9.0    +      -       -      +
    280I  LEU      3.1     2.0    +      -       -      -
    281I  MET*     1.3    93.4    -      -       +      +
    283I  MET*     1.3    63.6    +      -       -      +
    284I  ASP      3.5     0.2    +      -       -      -
    285I  SER*     4.0     5.7    +      -       -      -
    286I  ARG*     3.7    21.3    +      -       -      +
    332I  LYS*     4.2    20.6    -      -       -      +
    333I  LEU*     3.4    55.4    -      -       +      +
    336I  SER*     4.7    11.2    -      -       -      -
    337I  ILE*     4.2     7.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 283 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279I  ILE      4.5     1.4    +      -       -      -
    280I  LEU      3.7     2.4    +      -       -      -
    281I  MET      3.5     0.4    -      -       -      -
    282I  GLN*     1.3    79.0    -      -       +      +
    284I  ASP*     1.3    66.3    +      -       -      +
    286I  ARG*     3.9     8.5    +      -       -      +
    287I  LEU*     3.7    41.1    +      -       +      +
    325I  LEU*     6.0     4.3    -      -       -      -
    333I  LEU*     5.4     6.5    -      -       +      -
    337I  ILE*     4.9     8.3    -      -       +      -
    414I  PHE*     4.6     9.6    -      -       +      -
    417I  PHE*     5.4     9.9    -      -       +      -
    418I  PHE*     5.1    12.8    -      -       +      -
    451I  PHE*     6.5     0.2    -      -       +      -
    456I  PHE*     5.0    12.1    -      -       +      -
    472I  VAL*     3.7    22.7    -      -       +      -
    473I  GLU*     3.5    37.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 284 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280I  LEU*     3.0    42.9    -      -       -      +
    281I  MET*     3.6     5.8    +      -       -      +
    282I  GLN      3.4     0.8    -      -       -      -
    283I  MET*     1.3    77.8    -      -       -      +
    285I  SER*     1.3    67.1    +      -       -      +
    287I  LEU*     3.3     2.7    +      -       -      +
    288I  THR*     3.0    35.3    +      -       -      +
    472I  VAL      5.2     2.1    -      -       -      +
    473I  GLU*     4.5     6.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 285 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281I  MET      3.9     8.5    +      -       -      -
    282I  GLN      4.2     8.1    -      -       -      -
    283I  MET      3.5     0.2    -      -       -      -
    284I  ASP*     1.3    78.9    -      -       -      +
    286I  ARG*     1.3    67.5    +      -       -      +
    288I  THR*     5.4     1.3    -      -       -      -
    289I  LYS*     3.3    46.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 286 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282I  GLN      3.7    16.4    +      -       -      +
    283I  MET*     3.9    12.0    +      -       -      +
    284I  ASP      3.3     1.0    -      -       -      -
    285I  SER*     1.3    81.2    +      -       -      +
    287I  LEU*     1.3    66.3    +      -       +      +
    289I  LYS*     3.5    15.3    -      -       -      +
    290I  PHE*     3.2    27.2    +      -       -      +
    320I  LEU*     5.2     2.3    -      -       -      +
    324I  GLN*     2.6    76.5    +      -       -      +
    325I  LEU*     3.9    28.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 287 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283I  MET*     3.7    33.0    +      -       +      +
    284I  ASP*     3.3     3.1    +      -       -      +
    286I  ARG*     1.3    85.5    -      -       +      +
    288I  THR*     1.3    66.5    +      -       -      +
    289I  LYS      3.3     0.2    -      -       -      -
    290I  PHE*     3.8     7.1    -      -       +      +
    291I  VAL*     3.2    31.1    +      -       +      +
    300I  VAL*     3.9    35.0    -      -       +      -
    304I  PHE*     5.1    14.8    -      -       +      -
    456I  PHE*     5.0    13.9    -      -       +      -
    470I  PHE*     3.8    30.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 288 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284I  ASP*     3.0    23.1    +      -       -      +
    285I  SER*     4.7     1.3    -      -       -      -
    287I  LEU*     1.3    78.3    -      -       -      +
    289I  LYS*     1.3    61.9    +      -       -      +
    291I  VAL*     4.5     4.0    -      -       -      +
    292I  GLN*     3.8    19.6    +      -       -      +
    470I  PHE*     5.7     1.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 289 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285I  SER*     3.3    38.6    +      -       -      +
    286I  ARG*     3.5    15.2    -      -       -      +
    287I  LEU      3.3     0.4    -      -       -      -
    288I  THR*     1.3    77.4    -      -       -      +
    290I  PHE*     1.3    57.4    +      -       +      +
    292I  GLN*     3.3     2.5    +      -       -      +
    293I  GLU*     2.3    51.5    +      -       +      +
    320I  LEU*     5.3     0.9    -      -       +      -
    324I  GLN*     2.8    43.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 290 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286I  ARG      3.2    16.6    +      -       -      +
    287I  LEU*     3.2    12.3    +      -       +      +
    289I  LYS*     1.3    82.5    -      -       -      +
    291I  VAL*     1.3    63.8    +      -       -      +
    293I  GLU*     4.2     3.8    -      -       +      -
    294I  LYS*     3.1    46.0    +      -       +      +
    295I  ASN      5.7     0.2    -      -       -      +
    298I  THR      5.7     1.1    -      -       -      -
    300I  VAL*     3.7    29.2    -      -       +      -
    303I  GLU*     3.0    32.8    -      -       -      -
    304I  PHE*     5.9     2.7    -      +       -      -
    316I  GLU*     4.1    13.5    -      -       +      -
    317I  LEU*     3.7    17.7    -      -       +      -
    320I  LEU*     3.3    43.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 291 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287I  LEU*     3.2    19.5    +      -       +      +
    288I  THR*     4.5     4.3    -      -       -      +
    290I  PHE*     1.3    80.2    -      -       -      +
    292I  GLN*     1.3    62.5    +      -       +      +
    294I  LYS      4.6     1.4    +      -       -      -
    295I  ASN      4.8    11.4    +      -       -      +
    296I  THR*     5.1     4.5    -      -       -      -
    300I  VAL*     3.7    26.7    -      -       +      -
    470I  PHE*     5.4     6.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 292 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288I  THR      3.8    13.8    +      -       -      +
    289I  LYS*     3.3     2.5    +      -       -      +
    290I  PHE      3.3     0.4    -      -       -      -
    291I  VAL*     1.3    81.6    -      -       +      +
    293I  GLU*     1.3    64.6    +      -       -      +
    294I  LYS      3.7     2.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 293 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289I  LYS*     2.3    50.3    +      -       +      +
    290I  PHE*     4.2     3.1    -      -       +      +
    292I  GLN*     1.3    70.4    -      -       -      +
    294I  LYS*     1.3    62.9    +      -       +      +
    320I  LEU*     6.4     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 294 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290I  PHE*     3.1    40.2    +      -       +      +
    291I  VAL      5.2     1.1    -      -       -      -
    292I  GLN      3.6     3.4    -      -       -      +
    293I  GLU*     1.3    79.1    -      -       +      +
    295I  ASN*     1.3    62.9    +      -       -      +
    296I  THR      4.2     0.7    +      -       -      -
    316I  GLU*     3.3    21.5    -      -       +      +
    320I  LEU*     5.9     0.4    -      -       +      -
----------------------------------------------------------
 Back to top of page


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