Contacts of the helix formed by residues 241 - 262 (chain J) in PDB entry 3FKS


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 ALA 241 (chain J).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77J  LEU      3.6    12.3    -      -       -      +
     78J  PHE*     3.2    35.8    +      -       -      +
     79J  GLY*     4.3     5.2    -      -       -      +
    240J  GLU*     1.3    81.2    -      -       -      +
    242J  ALA*     1.3    65.1    +      -       -      +
    243J  PRO*     3.4     4.5    -      -       +      -
    244J  LEU*     3.3    16.6    +      -       +      +
    245J  GLN*     3.4    12.0    +      -       -      +
    287M  THR*     5.3     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 242 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240J  GLU      3.8     0.4    +      -       -      -
    241J  ALA*     1.3    67.6    -      -       -      +
    243J  PRO*     1.3    76.0    -      -       +      +
    245J  GLN*     3.1     8.7    +      -       -      +
    246J  TYR*     2.9    21.2    +      -       -      +
    279J  ALA*     3.7    21.1    -      -       +      +
    282J  GLN*     3.6    37.4    -      -       -      +
    283J  LEU*     3.9    12.3    -      -       +      -
    287M  THR*     4.3    10.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 243 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     39J  GLY      5.7     0.4    -      -       -      +
     64J  MET*     5.4     1.8    -      -       +      -
     76J  VAL*     3.8    20.9    -      -       +      -
     77J  LEU      3.5    17.9    -      -       -      +
     78J  PHE*     3.5    24.7    -      -       +      -
    241J  ALA*     3.5    10.5    -      -       +      -
    242J  ALA*     1.3    95.6    -      -       +      +
    244J  LEU*     1.3    55.7    +      -       -      +
    246J  TYR*     3.0     6.6    +      -       +      +
    247J  LEU*     2.9    33.5    +      -       +      +
    283J  LEU*     3.8    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 244 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78J  PHE*     3.4    52.3    -      -       +      +
    111J  ASP*     5.4     4.5    -      -       -      +
    112J  ALA*     3.0    31.8    -      -       +      +
    113J  LEU*     4.0    29.6    -      -       +      -
    236J  ALA*     3.6     2.0    -      -       +      +
    240J  GLU*     3.7    39.9    -      -       +      +
    241J  ALA*     3.5    13.0    -      -       +      +
    242J  ALA      3.2     0.6    -      -       -      -
    243J  PRO*     1.3    77.3    -      -       -      +
    245J  GLN*     1.3    60.1    +      -       -      +
    247J  LEU*     3.5     2.6    +      -       +      +
    248J  ALA*     3.1     9.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 245 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208J  VAL*     4.0    15.4    -      -       +      +
    209J  GLY*     4.4     7.1    +      -       -      -
    236J  ALA*     3.4    28.9    -      -       +      +
    237J  THR      3.1    21.4    +      -       -      +
    238J  ALA*     3.3    19.4    +      -       -      +
    240J  GLU      3.4    13.3    +      -       -      -
    241J  ALA      3.4     9.2    +      -       -      +
    242J  ALA*     3.1     8.6    +      -       -      +
    244J  LEU*     1.3    75.0    -      -       +      +
    246J  TYR*     1.3    64.7    +      -       -      +
    248J  ALA*     3.6     0.9    +      -       -      +
    249J  PRO*     3.1    20.4    -      -       -      +
    275J  LYS*     3.9    15.4    -      -       -      +
    276J  GLN*     3.9     7.2    -      -       -      +
    279J  ALA*     4.0    13.5    -      -       +      +
    286M  ALA*     6.1     0.9    -      -       -      +
    287M  THR*     4.6     9.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 246 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52J  GLU*     4.8     8.0    +      -       -      -
     64J  MET*     4.9    13.7    -      -       +      -
     66J  LEU*     5.1    10.2    -      -       +      +
    132J  GLN*     3.8    19.4    +      -       -      -
    242J  ALA      2.9    13.0    +      -       -      +
    243J  PRO*     3.0    15.9    +      -       +      +
    245J  GLN*     1.3    78.7    -      -       -      +
    247J  LEU*     1.3    86.0    +      -       +      +
    250J  PHE*     3.7     9.3    -      +       -      -
    276J  GLN*     3.5    25.1    +      -       -      -
    279J  ALA*     4.4     8.5    -      -       +      +
    280J  TYR*     3.4    44.9    -      +       +      +
    283J  LEU*     4.4    13.2    -      -       +      -
    303J  LEU*     3.7    20.9    -      -       +      -
    306J  ARG*     4.0    12.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 247 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64J  MET*     4.3    11.2    -      -       +      -
     78J  PHE*     3.7    33.4    -      -       +      -
     97J  VAL*     3.8    32.1    -      -       +      -
    112J  ALA*     4.7     3.6    -      -       +      +
    113J  LEU*     4.6    11.0    -      -       +      -
    131J  ALA*     4.9     8.1    -      -       +      -
    132J  GLN*     5.1     5.8    -      -       -      +
    243J  PRO      2.9    15.3    +      -       -      +
    244J  LEU*     4.1     4.7    -      -       +      +
    246J  TYR*     1.3   100.5    -      -       +      +
    248J  ALA*     1.3    68.1    +      -       -      +
    249J  PRO      3.3     1.1    -      -       -      -
    250J  PHE*     2.7    10.5    +      -       +      +
    251J  THR*     2.7    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 248 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112J  ALA*     4.0    11.0    -      -       +      +
    206J  VAL*     4.2     4.0    -      -       +      -
    208J  VAL*     4.1     9.4    -      -       +      -
    234J  VAL*     3.9    14.0    -      -       +      +
    236J  ALA*     3.6    22.0    -      -       +      +
    244J  LEU      3.1    17.9    +      -       -      +
    245J  GLN      3.7     2.7    -      -       -      +
    247J  LEU*     1.3    75.1    -      -       -      +
    249J  PRO*     1.3    65.1    -      -       +      +
    251J  THR*     3.2     4.2    +      -       -      -
    252J  ALA*     2.8    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 249 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206J  VAL*     4.0    11.9    -      -       +      -
    208J  VAL*     4.3    12.3    -      -       +      -
    245J  GLN      3.1    14.8    -      -       -      +
    246J  TYR      3.7     4.3    -      -       -      +
    247J  LEU      3.4     4.3    -      -       -      -
    248J  ALA*     1.3    92.2    -      -       +      +
    250J  PHE*     1.3    57.1    +      -       -      +
    252J  ALA*     3.6     0.5    +      -       -      +
    253J  ALA*     3.1    21.1    +      -       -      +
    270J  TYR*     3.5    13.3    -      -       +      -
    273J  LEU*     4.7     3.4    -      -       +      -
    276J  GLN*     3.3    30.3    -      -       +      +
    307J  LEU*     3.2    37.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 250 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131J  ALA*     3.9    19.5    -      -       +      +
    132J  GLN*     4.0    28.3    -      -       -      +
    246J  TYR*     3.7    20.0    -      +       -      -
    247J  LEU*     2.7    14.0    +      -       +      +
    249J  PRO*     1.3    73.0    -      -       -      +
    251J  THR*     1.3    63.7    +      -       -      +
    253J  ALA*     3.1    15.6    +      -       -      +
    254J  SER*     3.3     8.3    +      -       -      -
    276J  GLN*     3.9    10.5    -      -       -      -
    303J  LEU*     3.4    46.4    -      -       +      -
    306J  ARG*     3.9    17.0    -      -       +      -
    307J  LEU*     3.6    35.7    -      -       +      -
    310J  ARG*     3.7    23.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 251 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97J  VAL*     4.9     4.9    -      -       -      +
     98J  ASP      6.1     0.2    -      -       -      -
     99J  VAL*     3.5    36.5    -      -       +      +
    111J  ASP      5.0     1.3    -      -       -      +
    112J  ALA*     3.0    31.0    +      -       -      +
    113J  LEU      5.0     0.4    -      -       -      -
    114J  GLY*     5.1     0.4    -      -       -      +
    131J  ALA*     4.6    10.7    -      -       -      +
    234J  VAL*     4.8     4.3    -      -       +      -
    247J  LEU*     2.7    25.1    +      -       -      +
    248J  ALA*     3.5     9.0    -      -       -      -
    250J  PHE*     1.3    73.6    -      -       -      +
    252J  ALA*     1.3    63.2    +      -       -      +
    254J  SER*     3.2    12.2    +      -       -      -
    255J  ILE*     3.2    21.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 252 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204J  VAL*     3.9     5.7    -      -       +      +
    206J  VAL*     3.6    29.6    -      -       +      -
    234J  VAL*     3.6    26.2    -      -       +      +
    248J  ALA      2.8    17.0    +      -       -      +
    249J  PRO      3.8     1.8    -      -       -      +
    251J  THR*     1.3    77.1    -      -       -      +
    253J  ALA*     1.3    63.2    +      -       -      +
    255J  ILE*     3.0    16.2    +      -       -      +
    256J  GLY      3.1    10.4    +      -       -      -
    268J  ILE*     3.8    11.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 253 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249J  PRO      3.1    15.9    +      -       -      +
    250J  PHE      3.1    11.4    +      -       -      +
    252J  ALA*     1.3    76.5    -      -       -      +
    254J  SER*     1.3    55.9    +      -       -      +
    256J  GLY*     3.7     0.7    +      -       -      -
    257J  GLU*     2.9    28.8    +      -       -      +
    268J  ILE*     3.9    10.1    -      -       -      +
    270J  TYR*     3.8     7.0    -      -       -      +
    307J  LEU*     3.7    15.3    -      -       +      +
    310J  ARG*     3.3    25.0    +      -       +      +
    323J  LEU*     4.0    10.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 254 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99J  VAL*     3.8    13.5    -      -       -      -
    101J  VAL*     3.4    12.8    -      -       -      +
    129J  SER*     4.1    11.7    +      -       -      -
    130J  ARG      2.9    27.1    +      -       -      -
    131J  ALA      4.1     0.2    +      -       -      -
    133J  VAL*     3.6     5.0    -      -       -      +
    250J  PHE      3.3     4.3    +      -       -      -
    251J  THR*     3.2     9.5    +      -       -      -
    252J  ALA      3.1     0.8    -      -       -      -
    253J  ALA*     1.3    74.1    -      -       -      +
    255J  ILE*     1.3    65.3    +      -       -      +
    256J  GLY      3.3     0.2    -      -       -      -
    257J  GLU*     3.6     7.2    -      -       -      +
    258J  TRP*     3.3    15.6    +      -       -      +
    310J  ARG*     2.8    23.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 255 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99J  VAL*     3.7    21.8    -      -       +      -
    100J  PRO      5.1     0.7    -      -       -      +
    101J  VAL*     3.9     9.8    -      -       +      +
    102J  GLY      4.9     2.1    +      -       -      +
    105J  LEU*     3.6    31.4    -      -       +      -
    110J  VAL*     4.9     5.4    -      -       +      -
    114J  GLY*     6.1     0.7    -      -       -      -
    204J  VAL*     5.1     2.7    -      -       +      -
    232J  ILE*     3.5    33.2    -      -       +      -
    234J  VAL*     3.7    29.2    -      -       +      -
    251J  THR*     3.2    19.7    -      -       +      +
    252J  ALA*     3.0     7.7    +      -       -      +
    254J  SER*     1.3    78.7    -      -       -      +
    256J  GLY*     1.3    59.6    +      -       -      +
    258J  TRP*     3.6    10.0    -      -       -      +
    259J  PHE*     3.3    17.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 256 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204J  VAL*     4.3    16.1    -      -       -      +
    252J  ALA      3.1    12.0    +      -       -      -
    253J  ALA      4.1     0.9    -      -       -      -
    255J  ILE*     1.3    73.2    -      -       -      +
    257J  GLU*     1.3    66.0    +      -       -      +
    258J  TRP      3.0     2.7    -      -       -      -
    259J  PHE*     3.1    24.1    +      -       -      +
    260J  ARG*     3.3     9.4    +      -       -      +
    266J  ALA*     3.7     7.0    -      -       -      +
    268J  ILE*     5.9     1.1    -      -       -      -
    323J  LEU*     4.1    16.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 257 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    133J  VAL*     3.6    24.0    -      -       -      +
    134J  LYS      4.4     4.3    -      -       -      +
    253J  ALA      2.9    16.4    +      -       -      +
    254J  SER*     3.7     9.8    +      -       -      +
    255J  ILE      3.4     0.2    -      -       -      -
    256J  GLY*     1.3    77.2    -      -       -      +
    258J  TRP*     1.3    62.3    +      -       -      +
    260J  ARG*     2.8    49.3    +      -       -      +
    261J  ASP*     2.9    37.2    +      -       -      +
    310J  ARG*     2.7    38.5    +      -       -      +
    323J  LEU*     4.2     5.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 258 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101J  VAL*     4.0    26.0    -      -       +      -
    102J  GLY*     3.9    16.1    -      -       -      +
    103J  PRO*     3.2    37.5    -      -       +      -
    126J  ALA*     4.5    12.8    +      -       +      +
    127J  GLY*     6.2     0.2    -      -       -      -
    129J  SER*     5.9     0.2    -      -       -      +
    254J  SER      3.3     9.7    +      -       -      +
    255J  ILE      3.6    12.6    -      -       -      +
    256J  GLY      3.0     0.2    -      -       -      -
    257J  GLU*     1.3    78.1    -      -       -      +
    259J  PHE*     1.3   103.9    +      +       -      +
    261J  ASP*     3.1     6.8    +      -       -      -
    262J  ASN*     2.9    70.3    +      -       +      +
    264J  LYS*     4.7    17.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 259 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102J  GLY      4.3     8.1    -      -       -      -
    103J  PRO*     4.8     1.1    -      -       +      -
    106J  LEU*     4.1    15.5    -      -       +      -
    202J  TYR*     3.3    52.5    -      +       +      -
    204J  VAL*     5.4     2.2    -      -       +      -
    232J  ILE*     4.0    24.7    -      -       +      -
    255J  ILE      3.3    24.7    -      -       -      -
    256J  GLY*     3.5    13.5    -      -       -      +
    258J  TRP*     1.3   105.8    -      +       -      +
    260J  ARG*     1.3    63.8    +      -       -      +
    262J  ASN*     3.0    13.1    +      -       -      +
    264J  LYS*     3.1    33.1    +      -       +      -
    265J  HIS      4.6     1.6    -      -       -      -
    266J  ALA*     3.7    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 260 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134J  LYS      5.5     0.6    +      -       -      -
    136J  PRO*     3.2    27.3    -      -       -      +
    256J  GLY      3.3     2.4    +      -       -      +
    257J  GLU*     2.8    45.7    +      -       -      +
    259J  PHE*     1.3    78.5    -      -       -      +
    261J  ASP*     1.3    86.1    +      -       -      +
    263J  GLY      4.1     0.5    +      -       -      -
    310J  ARG*     2.8    30.2    +      -       -      +
    312J  ALA      4.1     9.4    -      -       -      -
    314J  LEU*     3.2    34.7    -      -       +      +
    319J  GLY      5.6     0.3    -      -       -      -
    321J  GLY*     3.3    15.6    +      -       -      -
    322J  SER*     3.4    40.9    +      -       -      +
    323J  LEU*     3.9    19.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 261 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257J  GLU*     2.9    29.3    +      -       -      +
    258J  TRP*     3.6     6.3    +      -       +      +
    260J  ARG*     1.3   110.4    +      -       -      +
    262J  ASN*     1.3    66.2    +      -       -      +
    263J  GLY      3.3     6.7    +      -       -      -
    314J  LEU*     4.0    11.3    -      -       +      +
    318J  GLU*     5.0     7.8    -      -       -      +
    319J  GLY*     5.3     2.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 262 (chain J). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258J  TRP*     2.9    66.4    +      -       +      +
    259J  PHE*     3.0     4.4    +      -       -      +
    261J  ASP*     1.3    86.5    -      -       -      +
    263J  GLY*     1.3    63.2    +      -       -      +
    264J  LYS*     3.4    15.0    +      -       +      +
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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