Contacts of the helix formed by residues 356 - 379 (chain B) in PDB entry 4LOU


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 ILE 356 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269B  PHE*     3.9    28.7    -      -       +      -
    273B  VAL*     5.3     2.5    -      -       +      -
    344B  THR*     3.9    24.5    -      -       +      -
    345B  LEU*     6.2     0.7    -      -       +      -
    348B  PHE*     4.0    37.8    -      -       +      -
    355B  GLY*     1.3    74.0    -      -       -      +
    357B  PHE*     1.3    67.9    +      -       -      +
    359B  PRO*     3.5     7.5    -      -       +      +
    360B  MET*     3.1    35.2    +      -       +      +
    402B  ILE*     5.4     0.4    -      -       +      -
    444B  LEU*     4.8    10.8    -      -       +      -
    445B  TYR*     3.4    31.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 357 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109B  ILE*     5.7     2.7    -      -       +      -
    148B  GLN*     4.1    15.5    -      -       +      -
    149B  GLY      6.1     0.4    -      -       -      +
    186B  LEU*     4.0    26.0    -      -       +      -
    190B  PHE*     3.7    24.0    -      +       +      -
    199B  PHE*     4.1    25.1    -      +       -      -
    355B  GLY*     3.7     0.8    -      -       -      -
    356B  ILE*     1.3    75.9    -      -       -      +
    358B  ALA*     1.3    56.7    +      -       -      +
    360B  MET*     2.7    31.4    +      -       +      +
    361B  LEU*     2.9    17.5    +      -       +      +
    398B  LEU*     3.4    39.2    -      -       +      +
    402B  ILE*     4.3     9.4    -      -       +      -
    404B  ALA*     6.3     0.4    -      -       +      -
    407B  THR*     4.8     8.7    -      -       +      -
    411B  LEU*     4.6     7.0    -      -       +      -
    445B  TYR*     4.0    28.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with ALA 358 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146B  GLY*     4.2     8.3    -      -       -      -
    148B  GLN*     3.3    26.3    -      -       -      +
    190B  PHE*     4.6     0.2    -      -       -      -
    315B  GLY*     3.7    15.8    -      -       -      +
    317B  PHE*     3.7    26.4    -      -       +      -
    355B  GLY      5.3     0.2    -      -       -      -
    357B  PHE*     1.3    79.3    -      -       -      +
    359B  PRO*     1.3    70.1    -      -       +      +
    360B  MET      3.1     0.9    +      -       -      -
    361B  LEU*     3.2    15.8    +      -       -      +
    362B  ALA*     3.3    11.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 359 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144B  VAL*     3.7     9.2    -      -       +      +
    145B  LEU*     3.6    31.4    -      -       -      +
    146B  GLY      4.1     0.2    -      -       -      +
    315B  GLY      3.7    11.0    -      -       -      +
    340B  ARG*     3.9    12.4    +      -       -      +
    344B  THR*     3.8    27.7    +      -       +      +
    355B  GLY      3.8     9.4    -      -       -      +
    356B  ILE*     3.5    17.5    -      -       +      +
    358B  ALA*     1.3    95.1    -      -       +      +
    360B  MET*     1.3    57.0    +      -       -      +
    362B  ALA*     4.0     2.9    +      -       -      +
    363B  LEU*     3.2    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 360 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269B  PHE*     4.4     7.0    -      -       +      -
    344B  THR*     5.7     0.2    -      -       +      -
    356B  ILE*     3.1    51.3    +      -       +      +
    357B  PHE*     2.7    12.8    +      -       +      +
    359B  PRO*     1.3    73.1    -      -       -      +
    361B  LEU*     1.3    56.9    +      -       -      +
    363B  LEU*     2.8    27.3    +      -       +      +
    364B  GLY*     2.9    11.4    +      -       -      -
    394B  MET      4.3     1.1    -      -       -      +
    397B  LEU*     3.5    36.7    -      -       +      +
    398B  LEU*     3.4    32.5    -      -       +      +
    401B  SER*     4.3    13.0    -      -       -      -
    402B  ILE*     3.5    23.3    -      -       +      -
    444B  LEU*     5.8     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 361 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190B  PHE*     3.9    15.7    -      -       +      -
    317B  PHE*     3.6    27.8    -      -       +      -
    320B  ILE*     4.4     9.9    -      -       +      -
    357B  PHE      2.9    13.9    +      -       -      +
    358B  ALA*     3.5     8.1    -      -       -      +
    360B  MET*     1.3    73.5    -      -       -      +
    362B  ALA*     1.3    56.5    +      -       -      +
    364B  GLY*     2.9     5.9    +      -       -      -
    365B  THR*     2.9    31.1    +      -       -      -
    394B  MET*     3.6    32.1    -      -       +      +
    398B  LEU*     4.1    16.4    -      -       +      +
    411B  LEU*     4.1    17.9    -      -       +      -
    412B  VAL*     4.2     9.0    -      -       +      -
    415B  MET*     3.8    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 362 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316B  GLY*     3.4    39.9    -      -       -      +
    319B  LEU*     3.7    10.5    -      -       +      -
    320B  ILE*     4.2     7.0    -      -       +      +
    340B  ARG*     4.4     9.8    -      -       -      +
    358B  ALA      3.3     7.8    +      -       -      +
    359B  PRO      4.3     3.8    -      -       -      +
    360B  MET      3.3     0.8    -      -       -      -
    361B  LEU*     1.3    79.0    -      -       -      +
    363B  LEU*     1.3    61.9    +      -       -      +
    365B  THR*     3.9     7.1    -      -       -      -
    366B  VAL*     3.1    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 363 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262B  PHE*     5.1     1.3    -      -       -      -
    265B  PHE*     5.9     0.7    -      -       +      -
    269B  PHE*     4.3    23.1    -      -       +      -
    337B  PHE*     3.5    42.7    -      -       +      +
    340B  ARG*     4.2    18.6    -      -       +      +
    341B  VAL*     3.6    16.6    -      -       +      +
    344B  THR*     4.4    10.1    -      -       +      +
    359B  PRO      3.2    22.1    +      -       -      +
    360B  MET*     2.8    11.0    +      -       +      +
    362B  ALA*     1.3    78.3    -      -       -      +
    364B  GLY*     1.3    58.7    +      -       -      +
    366B  VAL*     3.3     4.0    +      -       -      +
    367B  LEU*     2.9    28.9    +      -       -      +
    397B  LEU*     3.9    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 364 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262B  PHE*     3.4    16.8    -      -       -      -
    360B  MET      2.9    11.5    +      -       -      -
    361B  LEU      2.9     3.3    +      -       -      -
    363B  LEU*     1.3    74.7    -      -       -      +
    365B  THR*     1.3    58.7    +      -       -      +
    368B  GLY*     2.9    26.0    +      -       -      -
    393B  GLY*     3.2    33.4    -      -       -      -
    394B  MET      4.0     1.6    -      -       -      -
    397B  LEU*     5.0     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 365 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319B  LEU*     5.4     0.2    -      -       -      -
    320B  ILE*     3.5    37.0    -      -       +      +
    323B  ALA*     4.0    10.1    -      -       +      -
    324B  THR*     3.7    23.1    -      -       -      +
    361B  LEU      2.9    14.9    +      -       -      -
    362B  ALA*     4.1     3.6    -      -       -      -
    364B  GLY*     1.3    75.6    -      -       -      +
    366B  VAL*     1.3    58.4    +      -       -      +
    369B  THR*     2.8    34.7    +      -       -      -
    390B  ALA*     3.7    19.6    -      -       +      +
    394B  MET*     3.4    20.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 366 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319B  LEU*     3.8    21.8    -      -       +      -
    323B  ALA*     4.5     9.4    -      -       +      -
    328B  PHE*     5.9     0.2    -      -       +      -
    333B  LEU*     3.5    43.9    -      -       +      +
    336B  ILE*     4.2    14.1    -      -       +      -
    337B  PHE*     4.0    19.5    -      -       +      +
    340B  ARG*     6.0     0.4    -      -       -      -
    362B  ALA      3.1    20.2    +      -       -      +
    363B  LEU*     3.7     3.8    -      -       -      +
    364B  GLY      3.2     0.4    -      -       -      -
    365B  THR*     1.3    76.3    -      -       -      +
    367B  LEU*     1.3    65.6    +      -       -      +
    369B  THR*     4.0     4.5    -      -       -      -
    370B  ALA*     3.2    22.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 367 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  LEU*     5.0     3.1    -      -       +      -
    261B  ILE*     4.2    22.9    -      -       +      -
    262B  PHE*     3.5    47.3    -      -       +      -
    265B  PHE*     5.2     8.3    -      -       +      -
    337B  PHE*     4.3    32.1    -      -       +      -
    363B  LEU      2.9    16.3    +      -       -      +
    364B  GLY      3.4     0.2    +      -       -      -
    366B  VAL*     1.3    76.8    -      -       -      +
    368B  GLY*     1.3    62.4    +      -       -      +
    370B  ALA*     3.2    10.5    +      -       +      +
    371B  PHE*     3.1    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 368 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  LEU*     4.3    15.3    -      -       -      -
    262B  PHE*     4.6     0.6    -      -       -      -
    364B  GLY      2.9    17.0    +      -       -      -
    365B  THR      4.0     0.2    -      -       -      -
    367B  LEU*     1.3    73.9    -      -       -      +
    369B  THR*     1.3    51.7    -      -       -      +
    371B  PHE*     2.8     9.7    +      -       -      +
    372B  GLY*     2.6    33.3    +      -       -      -
    389B  PHE*     3.8    18.7    -      -       -      +
    390B  ALA      3.8     7.4    -      -       -      -
    393B  GLY*     4.6     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 369 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323B  ALA*     3.1    33.0    +      -       -      +
    324B  THR      5.4     0.4    -      -       -      +
    326B  GLY*     4.9     1.1    -      -       -      -
    328B  PHE*     5.9     0.7    -      -       +      -
    333B  LEU*     3.5    21.1    -      -       +      -
    365B  THR      2.8    22.6    +      -       -      -
    366B  VAL      4.0     3.4    -      -       -      -
    368B  GLY*     1.3    73.5    -      -       -      +
    370B  ALA*     1.3    62.2    +      -       -      +
    372B  GLY*     3.8     0.5    -      -       -      -
    373B  MET*     3.1    38.6    +      -       +      +
    386B  ALA*     4.2    16.1    -      -       +      +
    390B  ALA*     3.0    19.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 370 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330B  MET*     4.1    24.7    -      -       +      +
    333B  LEU*     4.0    15.0    -      -       +      +
    334B  VAL*     6.1     1.8    -      -       +      +
    366B  VAL*     3.2    14.8    +      -       +      +
    367B  LEU*     3.4    14.8    -      -       +      +
    368B  GLY      3.0     0.8    -      -       -      -
    369B  THR*     1.3    74.6    -      -       -      +
    371B  PHE*     1.3    65.9    +      -       -      +
    373B  MET*     3.1    13.4    +      -       -      +
    374B  VAL*     3.2    18.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 371 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254B  LEU*     3.6    31.4    -      -       +      -
    257B  ILE*     3.6    32.8    -      -       +      -
    258B  LEU*     3.5    33.2    -      -       +      -
    261B  ILE*     4.2    17.0    -      -       +      -
    367B  LEU      3.1     7.9    +      -       -      +
    368B  GLY      2.8    11.9    +      -       -      +
    370B  ALA*     1.3    72.8    -      -       -      +
    372B  GLY*     1.3    60.0    +      -       -      +
    374B  VAL*     3.2    11.5    +      -       +      +
    375B  ALA*     3.1    24.2    +      -       +      +
    389B  PHE*     3.7    29.8    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLY 372 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    368B  GLY      2.6    17.6    +      -       -      -
    369B  THR      3.8     0.4    -      -       -      -
    371B  PHE*     1.3    73.8    -      -       -      +
    373B  MET*     1.3    59.6    +      -       -      +
    375B  ALA*     3.6     1.8    +      -       -      +
    376B  VAL*     3.3    28.9    +      -       -      +
    386B  ALA*     3.3    16.8    -      -       -      +
    389B  PHE*     3.6    29.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 373 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326B  GLY*     4.0    20.6    -      -       -      +
    328B  PHE      3.2    28.0    -      -       -      +
    329B  SER*     5.2     0.4    -      -       -      -
    330B  MET*     4.5    21.1    -      -       +      +
    333B  LEU*     4.2    11.2    -      -       +      -
    369B  THR*     3.1    33.0    +      -       +      +
    370B  ALA*     3.1    10.3    +      -       -      +
    372B  GLY*     1.3    76.9    -      -       -      +
    374B  VAL*     1.3    65.0    +      -       +      +
    375B  ALA      3.3     0.2    -      -       -      -
    376B  VAL*     3.9     6.4    +      -       -      +
    377B  GLU*     3.8    22.3    +      -       -      +
    386B  ALA*     4.1     9.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 374 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330B  MET*     4.5    17.0    -      -       +      -
    370B  ALA      3.2    18.2    -      -       -      +
    371B  PHE*     3.2    10.9    +      -       +      +
    373B  MET*     1.3    77.6    -      -       +      +
    375B  ALA*     1.3    65.2    +      -       -      +
    377B  GLU*     3.4     4.6    +      -       -      +
    378B  LEU*     3.1    50.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 375 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254B  LEU*     4.1    15.0    -      -       +      -
    371B  PHE*     3.1    20.0    +      -       +      +
    372B  GLY      3.8     5.4    -      -       -      +
    373B  MET      3.3     0.2    -      -       -      -
    374B  VAL*     1.3    73.7    -      -       -      +
    376B  VAL*     1.3    65.5    +      -       -      +
    377B  GLU      3.1     2.4    +      -       -      -
    378B  LEU*     3.2     0.6    +      -       -      -
    379B  PHE*     2.9    39.0    +      -       +      +
    384B  LEU*     3.7    21.8    -      -       +      -
    389B  PHE*     4.3    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 376 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    372B  GLY      3.3    17.6    +      -       -      +
    373B  MET*     4.1     7.6    -      -       -      +
    374B  VAL      3.5     0.4    -      -       -      -
    375B  ALA*     1.3    77.0    -      -       -      +
    377B  GLU*     1.3    63.4    -      -       +      +
    379B  PHE      4.6     2.0    -      -       -      -
    380B  PRO*     3.9    21.3    -      -       -      +
    384B  LEU*     3.7    38.3    -      -       +      +
    386B  ALA*     4.0    14.1    -      -       +      +
     57E  THR*     5.0    15.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 377 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    373B  MET      3.8    13.8    +      -       -      +
    374B  VAL*     3.4     8.3    +      -       -      +
    375B  ALA      3.1     0.6    -      -       -      -
    376B  VAL*     1.3    83.7    -      -       +      +
    378B  LEU*     1.3    68.6    +      -       +      +
    379B  PHE      3.3     1.7    +      -       -      -
    380B  PRO*     4.0     8.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 378 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374B  VAL*     3.1    35.4    +      -       +      +
    375B  ALA*     5.4     0.2    -      -       -      -
    377B  GLU*     1.3    81.0    -      -       +      +
    379B  PHE*     1.3    93.4    +      -       +      +
    380B  PRO*     3.5     7.5    -      -       -      +
    381B  GLN*     4.3     1.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 379 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253B  TRP*     3.9    29.4    -      +       -      -
    254B  LEU*     4.0    30.5    -      -       +      -
    375B  ALA*     2.9    25.5    +      -       +      +
    376B  VAL*     4.0     2.8    -      -       -      +
    378B  LEU*     1.3   109.9    -      -       +      +
    380B  PRO*     1.3    65.1    -      -       -      +
    381B  GLN*     3.0    26.0    +      -       -      +
    382B  TYR*     3.2    38.8    +      +       +      +
    383B  HIS      4.2     1.6    +      -       -      -
    384B  LEU*     4.3     5.2    +      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il