Contacts of the helix formed by residues 371 - 394 (chain E) in PDB entry 5KRA


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 THR 371 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369E  ASP      5.6     0.2    -      -       -      +
    370E  LEU*     1.3    78.6    -      -       -      +
    372E  LEU*     1.3    65.8    +      -       -      +
    373E  HIS*     3.8     6.9    +      -       -      +
    374E  ASP*     3.2    32.1    +      -       -      +
    375E  GLN*     3.0    21.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 372 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370E  LEU      3.9     0.2    +      -       -      -
    371E  THR*     1.3    74.9    -      -       -      +
    373E  HIS*     1.3    68.4    +      -       +      +
    375E  GLN*     3.3    13.7    +      -       -      +
    376E  VAL*     3.0    34.3    +      -       +      +
    691G  HIS*     4.0    24.7    -      -       +      +
    694G  LEU*     3.7    34.3    -      -       +      +
    695G  GLN*     3.3    40.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 373 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371E  THR*     3.2     7.0    +      -       -      +
    372E  LEU*     1.3    90.5    -      -       +      +
    374E  ASP*     1.3    62.0    +      -       -      +
    376E  VAL*     3.5     8.3    +      -       -      +
    377E  HIS*     3.1    26.0    +      -       -      +
    691G  HIS*     4.7    17.1    -      +       -      -
----------------------------------------------------------
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Residues in contact with ASP 374 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370E  LEU*     4.3    18.5    -      -       +      +
    371E  THR*     3.2    26.7    +      -       -      +
    373E  HIS*     1.3    81.6    -      -       -      +
    375E  GLN*     1.3    64.8    +      -       -      +
    377E  HIS*     3.4     1.2    +      -       -      +
    378E  LEU*     3.1    30.7    +      -       -      +
    461E  PHE*     3.2    38.1    -      -       +      -
    475E  ILE*     5.5     1.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 375 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    362E  LYS*     5.7     1.7    -      -       -      +
    367E  PHE*     3.1    57.6    +      -       +      +
    368E  VAL*     3.4    20.0    +      -       -      +
    370E  LEU*     3.0    25.4    +      -       +      +
    371E  THR      3.0    16.7    +      -       -      +
    372E  LEU*     3.6    20.8    -      -       -      +
    374E  ASP*     1.3    75.7    -      -       -      +
    376E  VAL*     1.3    63.8    +      -       -      +
    378E  LEU      3.5     0.2    +      -       -      -
    379E  LEU*     3.2    24.4    +      -       -      +
    694G  LEU*     3.8    27.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 376 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    372E  LEU*     3.0    19.7    +      -       +      +
    373E  HIS*     3.6    10.1    -      -       -      +
    374E  ASP      3.2     0.2    -      -       -      -
    375E  GLN*     1.3    76.3    -      -       -      +
    377E  HIS*     1.3    57.1    +      -       -      +
    379E  LEU      3.3     1.7    +      -       -      -
    380E  GLU*     2.8    55.5    +      -       -      +
    688G  LYS*     3.6    15.9    -      -       -      +
    690G  LEU*     3.6    19.8    -      -       +      +
    691G  HIS*     3.7    30.3    -      -       +      +
    694G  LEU*     3.7    17.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 377 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    373E  HIS      3.1    14.2    +      -       -      +
    374E  ASP      3.8     0.4    -      -       -      +
    375E  GLN      3.4     0.2    -      -       -      -
    376E  VAL*     1.3    81.1    -      -       -      +
    378E  LEU*     1.3    62.3    +      -       -      +
    380E  GLU*     3.2    12.7    +      -       -      +
    381E  CYS*     3.0    26.9    +      -       +      +
    457E  GLY*     2.9    24.5    +      -       -      -
    460E  THR*     2.6    45.3    +      -       -      -
    461E  PHE*     3.3    30.3    -      +       +      -
----------------------------------------------------------
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Residues in contact with LEU 378 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367E  PHE*     3.9    13.2    -      -       +      -
    370E  LEU*     3.7    30.1    -      -       +      -
    374E  ASP      3.1    17.2    +      -       -      +
    375E  GLN      3.9     3.4    -      -       -      +
    377E  HIS*     1.3    76.2    -      -       -      +
    379E  LEU*     1.3    58.2    +      -       -      +
    381E  CYS*     3.3     4.6    +      -       -      +
    382E  ALA*     3.0    32.7    +      -       -      +
    453E  LEU*     3.4    27.5    -      -       +      +
    454E  LEU*     3.9    25.6    -      -       +      +
    457E  GLY*     3.9    30.0    +      -       -      +
    458E  VAL      4.0     0.7    -      -       -      +
    461E  PHE*     3.9    13.7    -      -       +      -
    475E  ILE*     4.3     6.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 379 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357E  MET*     4.1    28.3    -      -       +      +
    358E  ILE*     4.3    11.2    -      -       +      -
    361E  ALA*     4.0    16.4    -      -       +      -
    367E  PHE*     4.0    11.0    -      -       +      -
    375E  GLN      3.2    16.8    +      -       -      +
    376E  VAL      3.8     2.7    -      -       -      +
    378E  LEU*     1.3    75.9    -      -       -      +
    380E  GLU*     1.3    66.1    +      -       -      +
    382E  ALA*     5.2     0.2    -      -       -      -
    383E  TRP*     3.1    31.9    +      -       -      +
    386E  ILE*     4.7     1.3    -      -       +      -
    453E  LEU*     3.7    19.5    -      -       +      -
    543E  MET*     3.3     6.4    -      -       +      +
    690G  LEU*     4.1    18.8    -      -       +      -
    694G  LEU*     3.8    34.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 380 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    376E  VAL*     2.8    31.3    +      -       -      +
    377E  HIS*     3.6    12.6    +      -       -      +
    379E  LEU*     1.3    76.9    -      -       -      +
    381E  CYS*     1.3    50.9    +      -       -      +
    383E  TRP*     3.2     8.5    -      -       -      -
    542E  GLU      4.8     3.3    -      -       -      +
    543E  MET*     3.8    14.9    -      -       -      +
    546E  ALA*     3.6    28.9    -      -       +      +
    547E  HIS*     2.7    34.1    +      -       -      -
    688G  LYS*     2.9    34.5    +      -       -      -
    690G  LEU*     3.7    13.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 381 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377E  HIS*     3.0    21.4    +      -       +      +
    378E  LEU      3.8     3.4    -      -       -      +
    380E  GLU*     1.3    79.6    -      -       -      +
    382E  ALA*     1.3    57.5    +      -       -      +
    383E  TRP      3.7     0.4    -      -       -      -
    384E  LEU      5.3     0.5    +      -       -      -
    385E  GLU*     4.1     8.8    -      -       -      +
    456E  SER*     3.3    29.2    -      -       -      -
    457E  GLY*     3.8    14.8    -      -       -      +
    460E  THR*     5.0     5.8    -      -       -      -
    515E  ARG*     4.1    10.9    +      -       -      -
    518E  SER*     5.0     2.8    +      -       -      -
    522E  MET*     5.6     0.2    -      -       -      +
    547E  HIS*     3.4    24.8    +      -       -      -
    516F  HIS*     5.3     7.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 382 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378E  LEU      3.0    16.2    +      -       -      +
    381E  CYS*     1.3    79.4    -      -       -      +
    383E  TRP*     1.3    64.3    +      -       -      +
    384E  LEU      3.3     2.7    -      -       -      -
    385E  GLU*     3.2    10.8    +      -       -      +
    386E  ILE*     3.0    29.4    +      -       +      +
    452E  ILE*     3.7    30.3    -      -       +      +
    453E  LEU*     4.2     8.7    -      -       -      +
    456E  SER*     3.8     9.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 383 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    354E  LEU*     4.0    20.0    -      -       +      -
    357E  MET*     3.2    24.1    -      -       -      +
    379E  LEU      3.1    15.8    +      -       -      +
    380E  GLU      3.2    24.8    +      -       -      -
    382E  ALA*     1.3    77.2    -      -       -      +
    384E  LEU*     1.3    78.3    +      -       +      +
    386E  ILE*     3.4     0.6    +      -       -      -
    387E  LEU*     3.0    52.7    +      -       +      +
    522E  MET*     3.7    34.1    -      -       +      +
    525E  LEU*     3.7    21.5    -      -       +      -
    540E  LEU*     3.6    27.8    -      -       +      -
    543E  MET*     3.3    53.5    +      -       +      -
    544E  LEU*     4.6     2.9    -      -       -      -
    547E  HIS*     4.2     1.8    -      -       -      -
    601E  6WS      4.5     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 384 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381E  CYS      5.3     0.6    +      -       -      -
    382E  ALA      3.3     0.4    -      -       -      -
    383E  TRP*     1.3   102.3    -      -       +      +
    385E  GLU*     1.3    61.1    +      -       -      +
    387E  LEU*     3.3     3.3    +      -       +      +
    388E  MET*     2.9    57.8    +      -       +      +
    518E  SER*     3.3    39.9    +      -       -      +
    521E  GLY      3.8     6.5    -      -       -      +
    522E  MET*     3.6    35.4    -      -       +      +
    525E  LEU*     4.9     2.7    -      -       +      -
    601E  6WS      4.4    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 385 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381E  CYS      4.1     7.6    -      -       -      +
    382E  ALA*     3.2    11.2    +      -       -      +
    384E  LEU*     1.3    77.2    -      -       -      +
    386E  ILE*     1.3    57.8    +      -       -      +
    388E  MET*     3.2     4.1    +      -       -      +
    389E  ILE*     2.8    33.5    +      -       -      +
    452E  ILE*     3.6    17.6    -      -       +      +
    456E  SER*     2.7    34.0    +      -       -      -
    511E  LEU*     4.1     3.8    -      -       -      +
    514E  ILE*     4.0    18.2    -      -       +      +
    515E  ARG*     3.4    42.2    +      -       -      +
    518E  SER*     3.5    25.1    +      -       -      +
    512F  SER*     4.8     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 386 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    357E  MET*     3.7    33.4    -      -       +      -
    360E  TRP*     3.7    26.2    -      -       +      -
    379E  LEU*     4.7     0.7    -      -       +      -
    382E  ALA*     3.0    25.4    +      -       +      +
    383E  TRP*     3.7     4.9    -      -       -      +
    385E  GLU*     1.3    73.2    -      -       -      +
    387E  LEU*     1.3    65.9    +      -       +      +
    389E  ILE*     3.3     8.6    -      -       -      +
    390E  GLY*     3.1    19.4    +      -       -      -
    449E  LYS*     3.9    28.2    -      -       +      +
    452E  ILE*     4.2    12.3    -      -       +      -
    453E  LEU*     4.2    22.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 387 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350E  ALA*     4.3    24.2    -      -       +      +
    353E  GLU*     3.6    43.8    -      -       +      +
    354E  LEU*     4.7     2.0    -      -       +      +
    357E  MET*     3.7    16.8    -      -       +      -
    383E  TRP*     3.0    49.4    +      -       +      +
    384E  LEU*     3.3     9.6    +      -       +      +
    386E  ILE*     1.3    75.9    -      -       +      +
    388E  MET*     1.3    58.0    +      -       -      +
    390E  GLY*     3.5     1.2    +      -       -      -
    391E  LEU*     3.0    28.1    +      -       -      +
    394E  ARG*     5.2     0.3    +      -       -      -
    601E  6WS      3.8    25.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 388 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384E  LEU*     2.9    41.1    +      -       +      +
    385E  GLU*     3.6     4.5    -      -       -      +
    387E  LEU*     1.3    74.8    -      -       -      +
    389E  ILE*     1.3    60.5    +      -       -      +
    391E  LEU*     3.1     6.8    +      -       -      +
    392E  VAL*     2.8    34.8    +      -       -      +
    424E  ILE*     4.2     9.2    -      -       +      -
    428E  LEU*     4.1    18.8    -      -       +      +
    514E  ILE*     4.7     3.6    -      -       +      +
    517E  MET*     3.6    35.7    -      -       +      +
    518E  SER*     3.7    23.6    -      -       -      -
    521E  GLY*     4.2     2.7    -      -       -      -
    601E  6WS      4.0    34.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 389 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    385E  GLU      2.8    23.4    +      -       -      +
    386E  ILE*     3.3    15.3    -      -       -      +
    388E  MET*     1.3    73.9    -      -       -      +
    390E  GLY*     1.3    60.9    +      -       -      +
    392E  VAL*     3.9     5.9    -      -       -      +
    393E  TRP*     3.0    27.4    +      -       -      +
    435E  PHE*     4.2    15.2    -      -       +      -
    445E  PHE*     3.4    13.4    -      -       +      -
    448E  LEU*     4.0    24.7    -      -       +      -
    449E  LYS*     4.1    21.1    -      -       +      +
    452E  ILE*     3.7    24.2    -      -       +      -
    511E  LEU*     4.7     1.1    -      -       +      -
    514E  ILE*     3.8    26.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 390 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386E  ILE      3.1    14.1    +      -       -      -
    387E  LEU      3.8     3.4    -      -       -      -
    389E  ILE*     1.3    77.7    -      -       -      +
    391E  LEU*     1.3    63.7    -      -       -      +
    393E  TRP*     3.3     4.6    +      -       -      +
    394E  ARG*     3.2    38.4    +      -       -      +
    445E  PHE*     3.9    16.6    -      -       -      -
    449E  LYS*     5.4     2.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 391 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    387E  LEU      3.0    14.9    +      -       -      +
    388E  MET*     3.4     8.1    -      -       +      +
    390E  GLY*     1.3    76.3    -      -       -      +
    392E  VAL*     1.3    58.4    +      -       -      +
    394E  ARG*     3.6    16.3    +      -       -      +
    395E  SER*     2.5    38.0    +      -       -      +
    402E  LEU*     4.3     9.4    -      -       +      -
    403E  LEU      3.4    33.7    -      -       -      +
    404E  PHE*     3.6    42.0    -      -       +      +
    428E  LEU*     3.7    31.0    -      -       +      -
    601E  6WS      4.4    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 392 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    388E  MET      2.8    20.2    +      -       -      +
    389E  ILE*     3.9     7.0    -      -       -      +
    391E  LEU*     1.3    77.7    -      -       +      +
    393E  TRP*     1.3    60.1    +      -       -      +
    395E  SER*     3.2    12.9    +      -       -      -
    396E  MET*     3.4     3.6    +      -       -      +
    402E  LEU*     5.3     1.1    -      -       +      -
    428E  LEU*     3.7    39.3    -      -       +      +
    431E  THR*     3.8    14.1    -      -       +      -
    432E  SER*     3.3    35.5    +      -       -      +
    435E  PHE*     3.5    31.2    -      -       +      -
    514E  ILE*     6.2     0.2    -      -       +      -
    517E  MET*     4.8     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 393 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323E  GLU*     5.4     2.1    +      -       -      -
    389E  ILE      3.0    19.5    +      -       -      +
    390E  GLY*     3.3     5.4    +      -       -      +
    392E  VAL*     1.3    78.4    -      -       -      +
    394E  ARG*     1.3    67.6    +      -       +      +
    395E  SER      3.2     3.6    +      -       -      -
    396E  MET*     3.3    50.4    +      -       +      +
    435E  PHE*     4.9     2.9    -      -       +      -
    440E  LEU*     3.2    40.2    -      -       +      -
    441E  GLN*     4.1     4.5    -      -       -      -
    442E  GLY*     3.4    32.1    -      -       -      -
    445E  PHE*     3.4    40.8    -      +       +      -
----------------------------------------------------------
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Residues in contact with ARG 394 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326E  ILE*     4.4    37.8    -      -       +      +
    353E  GLU*     3.1    32.6    +      -       -      -
    387E  LEU      5.2     0.6    +      -       -      -
    390E  GLY*     3.2    30.2    +      -       -      +
    391E  LEU*     3.7    14.5    -      -       -      +
    393E  TRP*     1.3    86.6    -      -       +      +
    395E  SER*     1.3    57.4    +      -       -      +
    396E  MET      3.3     2.2    -      -       -      -
    397E  GLU*     4.9     0.9    +      -       -      +
    398E  HIS*     4.0     7.3    +      -       -      -
    403E  LEU*     2.8    55.3    +      -       +      +
    404E  PHE      3.2    18.5    +      -       -      -
    601E  6WS      3.5    15.8    -      -       -      +
----------------------------------------------------------
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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