Contacts of the helix formed by residues 388 - 411 (chain E) in PDB entry 5I4V


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 GLU 388 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295E  LEU*     5.8     2.0    -      -       +      +
    296E  GLY*     4.7    10.7    +      -       -      -
    299E  ASP*     3.0    14.6    +      -       -      +
    386E  VAL*     4.1     2.9    -      -       -      -
    387E  GLN*     1.3    84.9    -      -       +      +
    389E  PRO*     1.3    65.0    -      -       -      +
    390E  GLY      3.3     2.5    -      -       -      -
    391E  ARG*     2.9    63.8    +      -       +      +
    392E  VAL*     3.5    14.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 389 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    381E  ALA*     3.4    31.5    -      -       +      +
    386E  VAL*     3.9    19.2    -      -       +      +
    387E  GLN      3.3     9.6    -      -       -      +
    388E  GLU*     1.3    90.2    -      -       -      +
    390E  GLY*     1.3    62.4    +      -       -      +
    392E  VAL*     3.2    10.2    +      -       +      -
    393E  GLU*     3.2    17.8    +      -       -      +
    422F  THR*     5.7     8.7    -      -       +      -
    423F  GLU*     5.3     5.2    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    388E  GLU      3.3     1.0    -      -       -      -
    389E  PRO*     1.3    83.6    -      -       -      +
    391E  ARG*     1.3    60.8    +      -       -      +
    393E  GLU*     3.7     9.8    +      -       -      +
    394E  ALA*     3.3    21.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 391 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294E  GLN*     2.4    41.6    +      -       -      +
    295E  LEU*     3.6    22.0    -      -       +      +
    296E  GLY      5.2     1.0    -      -       -      +
    388E  GLU*     2.9    55.8    +      -       +      +
    389E  PRO      3.2     0.4    -      -       -      -
    390E  GLY*     1.3    77.6    -      -       -      +
    392E  VAL*     1.3    60.5    +      -       -      +
    394E  ALA*     3.4     6.7    +      -       -      +
    395E  LEU*     3.2    28.9    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    295E  LEU*     4.6    13.0    -      -       +      -
    299E  ASP*     4.9     3.6    -      -       +      +
    303E  LEU*     4.3    19.3    -      -       +      -
    379E  PHE*     3.4    37.4    -      -       +      +
    380E  SER      3.8     4.0    -      -       -      +
    381E  ALA*     3.8    15.3    -      -       +      +
    386E  VAL*     4.1    17.5    -      -       +      -
    388E  GLU      3.5    15.0    -      -       -      +
    389E  PRO      3.2     6.2    +      -       -      +
    391E  ARG*     1.3    75.0    -      -       -      +
    393E  GLU*     1.3    59.8    +      -       -      +
    395E  LEU*     3.3     9.6    +      -       -      +
    396E  GLN*     2.9    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 393 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    379E  PHE      5.1     0.9    -      -       -      -
    381E  ALA*     3.3    28.0    -      -       +      +
    389E  PRO*     3.2    14.4    +      -       -      +
    390E  GLY*     4.1     8.4    -      -       -      +
    392E  VAL*     1.3    76.7    -      -       -      +
    394E  ALA*     1.3    61.8    +      -       -      +
    396E  GLN*     3.3    13.4    +      -       -      +
    397E  GLN*     3.2    23.9    +      -       -      +
    423F  GLU*     4.8     2.3    -      -       -      +
    427F  LYS*     3.1    38.5    +      -       -      +
    492F  ARG*     4.7    10.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 394 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390E  GLY      3.3    15.6    +      -       -      +
    391E  ARG*     3.7     7.2    -      -       -      +
    392E  VAL      3.2     0.6    -      -       -      -
    393E  GLU*     1.3    75.7    -      -       -      +
    395E  LEU*     1.3    61.7    +      -       +      +
    397E  GLN*     3.9     6.3    -      -       -      +
    398E  PRO*     2.9    26.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 395 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    513B  ILE*     3.7    37.5    -      -       +      -
    290E  PRO      4.5     2.7    -      -       -      +
    291E  GLY*     3.9    23.1    -      -       -      +
    294E  GLN*     5.2     2.5    -      -       +      +
    295E  LEU*     3.6    30.3    -      -       +      -
    379E  PHE*     3.9    29.8    -      -       +      -
    391E  ARG*     3.2    15.8    +      -       +      +
    392E  VAL*     3.5     7.4    -      -       -      +
    394E  ALA*     1.3    76.7    -      -       +      +
    396E  GLN*     1.3    64.2    +      -       -      +
    397E  GLN      3.3     0.5    +      -       -      -
    398E  PRO*     3.4     9.1    -      -       -      +
    399E  TYR*     3.0    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 396 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    376E  ILE*     3.0    41.0    -      -       +      +
    379E  PHE*     2.9    38.6    -      -       +      +
    380E  SER*     4.0     7.6    +      -       -      -
    381E  ALA      5.8     0.2    -      -       -      -
    392E  VAL      2.9    10.7    +      -       -      +
    393E  GLU*     3.3    11.9    +      -       -      +
    395E  LEU*     1.3    76.9    -      -       -      +
    397E  GLN*     1.3    63.7    +      -       -      +
    399E  TYR*     3.0     8.1    +      -       -      +
    400E  VAL*     3.0    21.4    +      -       +      +
    425E  LEU*     5.4     1.2    -      -       -      +
    491F  LEU*     3.7    32.2    -      -       -      +
    492F  ARG*     6.2     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 397 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    393E  GLU      3.2    14.0    +      -       -      +
    394E  ALA*     3.9     5.4    -      -       -      +
    396E  GLN*     1.3    79.9    -      -       -      +
    398E  PRO*     1.3    67.3    -      -       +      +
    400E  VAL*     3.1    10.4    +      -       +      +
    401E  GLU*     2.8    61.2    +      -       -      +
    488F  LYS*     4.9    15.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 398 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    512B  LEU*     3.6    42.2    -      -       +      +
    513B  ILE*     4.9     5.2    -      -       +      -
    224E  GLN*     5.0     1.2    +      -       -      +
    227E  MET*     5.0     9.6    -      -       +      +
    394E  ALA      2.9    28.3    -      -       -      +
    395E  LEU*     3.4    12.3    -      -       -      +
    397E  GLN*     1.3    87.1    -      -       +      +
    399E  TYR*     1.3    56.0    +      -       +      +
    401E  GLU*     3.3    12.1    +      -       +      +
    402E  ALA*     2.8    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 399 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    513B  ILE*     5.1     3.1    -      -       +      -
    227E  MET*     3.3    37.9    -      -       +      +
    231E  LEU*     4.0    12.6    -      -       +      -
    289E  VAL*     3.9     7.0    -      -       +      -
    290E  PRO*     2.6    45.6    +      -       -      +
    372E  LEU*     3.7    18.4    -      -       +      +
    375E  ALA*     4.0    17.7    -      -       +      -
    376E  ILE*     3.6    22.3    -      -       +      +
    379E  PHE*     3.6    24.7    -      +       -      -
    395E  LEU*     3.0    27.8    -      -       +      -
    396E  GLN      3.0     7.0    +      -       -      +
    398E  PRO*     1.3    79.0    -      -       +      +
    400E  VAL*     1.3    60.7    +      -       -      +
    402E  ALA*     4.4     3.1    -      -       -      -
    403E  LEU*     3.2    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 400 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    376E  ILE*     4.0    24.7    -      -       +      -
    396E  GLN*     3.0    23.9    +      -       +      +
    397E  GLN*     3.4    10.5    -      -       +      +
    399E  TYR*     1.3    74.4    -      -       -      +
    401E  GLU*     1.3    66.4    +      -       +      +
    403E  LEU*     3.2     4.3    +      -       -      +
    404E  LEU*     3.0    21.6    +      -       +      +
    418E  PHE*     4.1    12.7    -      -       +      -
    422E  LEU*     5.0     3.8    -      -       +      -
    487F  ALA*     3.9    28.3    -      -       +      -
    491F  LEU*     3.9    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 401 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224E  GLN*     4.0    10.8    -      -       -      +
    397E  GLN*     2.8    56.0    +      -       -      +
    398E  PRO*     3.6     8.2    -      -       +      +
    400E  VAL*     1.3    75.3    -      -       +      +
    402E  ALA*     1.3    62.7    +      -       -      +
    404E  LEU*     3.4    14.1    +      -       +      +
    405E  SER*     3.1    25.3    +      -       -      -
    483F  GLN      6.5     0.2    -      -       -      -
    484F  GLY*     4.8    16.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 402 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220E  LEU*     4.3     2.4    -      -       -      +
    224E  GLN*     3.7    27.5    -      -       +      +
    227E  MET*     5.3     7.6    -      -       -      -
    228E  ILE*     4.3    11.6    -      -       +      +
    372E  LEU*     4.2    16.8    -      -       +      +
    398E  PRO      2.8    20.6    +      -       -      +
    399E  TYR*     3.9     6.3    -      -       -      +
    401E  GLU*     1.3    72.7    -      -       -      +
    403E  LEU*     1.3    58.1    +      -       -      +
    405E  SER*     3.5     1.6    +      -       -      -
    406E  TYR*     2.8    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 403 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369E  GLU*     4.2    13.7    -      -       +      -
    372E  LEU*     3.7    27.5    -      -       +      +
    373E  LEU*     4.4    11.0    -      -       +      -
    376E  ILE*     3.7    22.4    -      -       +      -
    399E  TYR      3.2    14.1    +      -       -      +
    400E  VAL      3.2     5.9    +      -       -      +
    402E  ALA*     1.3    78.0    -      -       -      +
    404E  LEU*     1.3    65.0    +      -       -      +
    406E  TYR*     4.4     1.6    -      -       +      -
    407E  THR*     2.9    31.6    +      -       -      +
    418E  PHE*     4.2    18.4    -      -       +      -
    421E  MET*     3.5    40.4    -      -       +      -
    422E  LEU*     4.6     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 404 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    400E  VAL*     3.0    12.7    +      -       +      +
    401E  GLU*     3.5    17.9    -      -       +      +
    403E  LEU*     1.3    76.0    -      -       -      +
    405E  SER*     1.3    63.7    +      -       -      +
    407E  THR*     3.2     3.0    -      -       -      +
    408E  ARG*     3.0    66.5    +      -       -      +
    418E  PHE*     3.6    40.4    -      -       +      -
    472F  GLU*     5.1     1.8    -      -       -      +
    483F  GLN*     4.4    17.5    -      -       +      +
    484F  GLY*     5.6     3.6    -      -       -      -
    487F  ALA*     5.9     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 405 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218E  VAL      5.6     3.9    +      -       -      +
    219E  GLN      3.6    19.7    +      -       -      -
    220E  LEU*     3.5    21.5    -      -       -      -
    224E  GLN*     3.9    12.2    +      -       -      -
    401E  GLU      3.1    14.5    +      -       -      -
    402E  ALA      3.8     1.8    -      -       -      -
    404E  LEU*     1.3    78.0    -      -       -      +
    406E  TYR*     1.3    65.4    +      -       -      +
    408E  ARG*     3.2     5.4    +      -       -      +
    409E  ILE*     3.1    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 406 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    440A  PHE*     3.8    26.1    +      +       -      -
    443A  ARG*     4.3     4.5    +      -       -      -
    444A  LEU*     3.6    38.2    +      -       +      +
    220E  LEU*     3.6    11.8    -      -       +      +
    228E  ILE*     3.6    24.9    -      -       +      -
    366E  ASP*     2.4    32.7    +      -       -      -
    368E  ALA*     3.6    18.8    -      -       +      +
    369E  GLU*     3.7    28.3    -      -       +      -
    372E  LEU*     4.4     3.6    -      -       +      -
    402E  ALA      2.8    22.9    +      -       -      +
    403E  LEU*     3.4     6.3    +      -       +      +
    405E  SER*     1.3    72.6    -      -       -      +
    407E  THR*     1.3    60.2    +      -       -      +
    409E  ILE*     3.4     4.5    +      -       -      +
    410E  LYS*     2.9    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 407 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    369E  GLU*     3.4     9.2    +      -       -      -
    403E  LEU*     2.9    32.2    +      -       -      +
    404E  LEU      3.2     7.0    -      -       -      +
    406E  TYR*     1.3    81.6    -      -       -      +
    408E  ARG*     1.3    65.8    +      -       +      +
    410E  LYS*     3.8     5.1    -      -       -      +
    411E  ARG*     3.1    29.6    +      -       -      +
    414E  ASP      5.3     0.5    -      -       -      +
    417E  ARG*     3.1    35.8    -      -       +      +
    418E  PHE*     3.7    31.4    -      -       +      +
    421E  MET*     4.3     4.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 408 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218E  VAL*     6.5     0.7    -      -       -      -
    404E  LEU*     3.0    48.9    +      -       -      +
    405E  SER*     3.8     4.3    -      -       -      +
    407E  THR*     1.3    77.8    -      -       -      +
    409E  ILE*     1.3    62.6    -      -       +      +
    411E  ARG      4.7     2.5    -      -       -      -
    412E  PRO*     3.4    28.1    -      -       +      +
    414E  ASP      5.4     0.6    +      -       -      -
    415E  GLN*     2.5    66.0    +      -       -      +
    418E  PHE*     4.4     8.0    -      -       -      +
    419E  PRO*     4.3     8.5    -      -       -      +
    472F  GLU*     3.1    38.9    +      -       -      -
    476F  LYS*     4.2     7.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 409 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    444A  LEU*     3.8    24.6    -      -       +      +
    218E  VAL      4.0    13.9    -      -       -      +
    219E  GLN*     3.9     8.5    -      -       +      -
    220E  LEU*     3.5    45.3    -      -       +      +
    405E  SER*     3.1    16.8    +      -       -      +
    406E  TYR*     3.8     4.0    -      -       -      +
    408E  ARG*     1.3    79.3    -      -       +      +
    410E  LYS*     1.3    65.8    +      -       -      +
    411E  ARG      3.3     0.7    +      -       -      -
    412E  PRO*     3.5    13.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 410 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443A  ARG      3.4     4.2    +      -       -      -
    444A  LEU*     3.3    40.3    +      -       +      +
    446A  ASP*     2.8    30.6    +      -       -      -
    364E  GLY      4.7     1.3    -      -       -      -
    366E  ASP*     2.9    28.8    +      -       -      +
    369E  GLU*     3.5    32.8    -      -       -      +
    406E  TYR*     2.9    15.8    +      -       +      +
    407E  THR*     3.7     5.8    +      -       -      +
    409E  ILE*     1.3    79.0    -      -       -      +
    411E  ARG*     1.3    85.5    +      -       +      +
    412E  PRO*     3.8     2.9    -      -       -      +
    413E  GLN*     5.0     0.3    -      -       -      +
    417E  ARG*     3.8    13.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 411 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    444A  LEU      4.6     0.8    +      -       -      -
    446A  ASP*     2.5    35.7    +      -       -      -
    364E  GLY*     4.5    11.1    +      -       -      -
    407E  THR      3.1    15.1    +      -       -      +
    408E  ARG*     3.9     1.8    -      -       -      +
    410E  LYS*     1.3   106.0    +      -       +      +
    412E  PRO*     1.3    66.6    -      -       -      +
    413E  GLN*     3.2    26.5    -      -       -      +
    414E  ASP*     3.1    26.0    +      -       +      +
    415E  GLN*     4.8     0.5    -      -       -      +
    417E  ARG*     4.0    32.2    -      -       -      +
----------------------------------------------------------
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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