Contacts of the helix formed by residues 471 - 493 (chain C) in PDB entry 2W4T


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 SER 471 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    469C  PHE*     3.8    20.0    -      -       -      -
    470C  ASN*     1.3    74.3    -      -       -      +
    472C  PHE*     1.3    67.3    +      -       -      +
    473C  GLU*     3.2     6.0    +      -       -      +
    474C  GLN*     3.0    15.6    +      -       -      +
    475C  LEU      3.1     9.4    +      -       -      -
    589C  TYR*     4.0     7.2    -      -       -      -
    590C  SER      3.7    13.7    -      -       -      -
    592C  THR      5.5     4.7    -      -       -      -
    594C  TRP*     3.9     3.6    -      -       -      -
    597C  LYS*     3.3    15.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 472 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266C  LEU*     5.7     1.3    -      -       +      -
    471C  SER*     1.3    76.8    -      -       -      +
    473C  GLU*     1.3    65.8    +      -       -      +
    475C  LEU*     3.3     1.4    +      -       -      +
    476C  CYS*     2.8    55.5    +      -       -      -
    530C  LEU*     4.1     4.0    -      -       +      -
    594C  TRP*     2.3    85.2    -      +       +      -
    597C  LYS*     2.9    47.1    -      -       +      -
    598C  ASN*     3.8    10.8    -      -       +      -
    645C  ILE*     3.0    35.9    -      -       +      -
    646C  SER*     4.0     4.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 473 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266C  LEU*     6.2     0.2    -      -       -      +
    268C  GLU*     3.6    25.1    -      -       -      +
    269C  LYS*     4.2     1.5    +      -       -      +
    270C  SER*     2.9    32.5    +      -       -      +
    471C  SER*     3.1     6.0    +      -       -      +
    472C  PHE*     1.3    79.5    -      -       -      +
    474C  GLN*     1.3    55.6    +      -       -      +
    476C  CYS*     3.3     6.1    -      -       -      +
    477C  ILE*     2.7    34.2    +      -       +      +
    597C  LYS*     2.2    57.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 474 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    464C  PHE*     3.8     8.3    -      -       -      -
    465C  GLU*     2.6    36.8    +      -       +      +
    466C  ILE*     4.7     0.2    -      -       -      +
    470C  ASN*     3.8    20.9    -      -       +      +
    471C  SER      3.0    11.6    +      -       -      +
    473C  GLU*     1.3    76.1    -      -       -      +
    475C  LEU*     1.3    67.2    +      -       -      +
    476C  CYS      3.0     1.8    -      -       -      -
    477C  ILE*     2.9    14.6    +      -       +      +
    478C  ASN*     2.7    39.2    +      -       -      +
    587C  VAL*     4.0     5.3    -      -       -      +
    589C  TYR*     2.4    39.6    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 475 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    471C  SER      3.1     3.6    +      -       -      -
    472C  PHE      3.3     0.6    +      -       -      +
    474C  GLN*     1.3    79.3    +      -       -      +
    476C  CYS*     1.3    54.1    +      -       -      +
    478C  ASN*     3.8     2.4    -      -       +      +
    479C  TYR*     2.7    38.3    +      -       +      +
    523C  ILE*     5.7     5.6    -      -       +      +
    529C  ILE*     4.3    18.2    -      -       +      -
    578C  PHE*     3.8    24.2    -      -       +      -
    580C  LEU*     4.0    16.4    -      -       +      -
    589C  TYR*     2.9    47.3    -      -       +      +
    594C  TRP*     3.5    37.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 476 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265C  TYR*     5.3     0.3    +      -       -      -
    266C  LEU*     3.5    29.5    -      -       +      +
    472C  PHE*     2.8    65.9    +      -       -      -
    473C  GLU*     3.3    10.8    -      -       -      +
    474C  GLN      3.0     0.6    -      -       -      -
    475C  LEU*     1.3    75.2    -      -       -      +
    477C  ILE*     1.3    56.3    +      -       +      +
    479C  TYR*     3.9     6.0    -      -       -      +
    480C  THR*     2.5    34.2    +      -       -      -
    530C  LEU*     6.0     4.3    -      -       -      -
    594C  TRP*     5.0     0.2    -      -       -      -
    645C  ILE*     4.6     1.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 477 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266C  LEU*     5.8     0.9    -      -       +      -
    462C  ALA*     4.4    15.4    -      -       +      +
    463C  GLY      2.9    30.5    -      -       -      +
    464C  PHE*     3.7     8.1    -      -       -      -
    465C  GLU*     3.9    11.2    -      -       +      +
    473C  GLU*     2.7    24.2    -      -       +      +
    474C  GLN*     2.9    20.6    -      -       +      +
    476C  CYS*     1.3    75.0    -      -       +      +
    478C  ASN*     1.3    68.2    +      -       +      +
    480C  THR*     2.9    10.7    -      -       -      -
    481C  ASN*     2.7    49.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 478 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    464C  PHE*     2.5    26.7    -      -       -      +
    474C  GLN*     2.7    27.3    +      -       -      +
    475C  LEU*     3.8     3.4    -      -       +      +
    477C  ILE*     1.3    78.5    -      -       -      +
    479C  TYR*     1.3    68.6    +      -       -      +
    480C  THR      3.0     1.5    +      -       -      -
    481C  ASN*     3.1     1.5    +      -       -      -
    482C  GLU*     2.9    28.6    +      -       -      +
    580C  LEU*     5.7     1.0    -      -       -      +
    582C  HIS*     2.0    62.1    +      -       -      +
    587C  VAL*     4.2     1.6    -      -       -      +
    589C  TYR*     3.1    15.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 479 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    475C  LEU*     2.7    25.4    +      -       +      +
    476C  CYS*     3.9     6.3    -      -       -      +
    478C  ASN*     1.3    74.7    -      -       -      +
    480C  THR*     1.3    63.7    +      -       -      +
    482C  GLU*     3.4     9.9    -      -       +      +
    483C  ARG*     3.3    30.7    +      -       +      +
    520C  ILE*     3.4    16.0    +      -       +      +
    523C  ILE*     2.3    61.7    -      -       +      -
    524C  GLU*     2.3    39.7    -      -       +      +
    530C  LEU*     5.5     9.4    -      -       +      -
    650C  ARG*     5.3     8.5    -      -       +      -
    653C  LEU*     4.3    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 480 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265C  TYR*     3.8    18.4    +      -       +      -
    461C  ILE*     4.2    21.5    -      -       +      -
    462C  ALA      5.2     2.9    -      -       -      +
    476C  CYS      2.5    22.1    +      -       -      -
    477C  ILE*     2.9    15.7    +      -       -      +
    478C  ASN      3.0     0.4    -      -       -      -
    479C  TYR*     1.3    77.5    -      -       -      +
    481C  ASN*     1.3    57.3    +      -       -      +
    483C  ARG*     3.0    44.4    +      -       -      +
    484C  LEU*     3.4     4.2    +      -       -      +
    653C  LEU*     3.7    26.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 481 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176C  GLY      5.2     0.6    +      -       -      -
    182C  LYS*     3.7     1.0    -      -       -      +
    461C  ILE*     3.3    15.5    +      -       -      +
    462C  ALA      2.4    30.1    +      -       -      +
    463C  GLY*     2.9    23.7    -      -       -      -
    464C  PHE      3.1     8.2    +      -       -      -
    477C  ILE*     2.7    30.8    +      -       -      +
    478C  ASN      3.1     5.6    +      -       -      +
    480C  THR*     1.3    70.3    -      -       -      +
    482C  GLU*     1.3    67.2    +      -       -      +
    484C  LEU*     3.4    10.4    +      -       -      +
    485C  GLN*     3.3    17.3    +      -       -      +
    582C  HIS*     4.1     1.1    -      -       +      -
    583C  TYR*     3.5    23.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 482 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    478C  ASN*     2.9    28.5    +      -       -      +
    479C  TYR*     3.4    12.6    -      -       +      +
    481C  ASN*     1.3    71.9    -      -       -      +
    483C  ARG*     0.9    96.6    -      -       -      +
    484C  LEU      2.7     2.4    +      -       -      -
    485C  GLN*     2.8    13.9    +      -       -      +
    486C  GLN*     3.0     9.9    +      -       -      +
    516C  LEU*     3.4     9.0    -      -       -      +
    519C  CYS*     3.2    26.2    -      -       +      +
    520C  ILE*     4.4    17.1    -      -       +      +
    582C  HIS*     3.0    17.0    -      -       -      +
    583C  TYR*     1.6    59.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 483 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    459C  LEU*     6.0     2.6    -      -       -      +
    461C  ILE*     4.4    16.6    -      -       -      +
    479C  TYR*     3.3    17.5    -      -       +      +
    480C  THR*     3.0    31.6    +      -       -      +
    482C  GLU*     0.9   106.4    -      -       -      +
    484C  LEU*     1.3    71.4    +      -       -      +
    486C  GLN*     3.1    17.2    +      -       -      +
    487C  PHE*     3.3     6.3    +      -       -      +
    520C  ILE*     4.4    15.9    -      -       +      -
    653C  LEU*     3.3    52.9    +      -       -      +
    654C  ASN*     6.1     0.4    -      -       -      +
    656C  LEU*     5.3     5.0    -      -       -      +
    657C  MET*     4.3    42.1    -      -       -      +
    660C  LEU*     5.3     8.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 484 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173C  LEU*     4.1    24.5    -      -       +      -
    175C  THR*     2.9    39.9    -      -       +      -
    461C  ILE*     3.5    33.7    -      -       +      +
    480C  THR      3.4     7.0    +      -       -      +
    481C  ASN*     3.4    12.5    +      -       -      +
    482C  GLU      2.7     4.4    -      -       -      -
    483C  ARG*     1.3    87.1    -      -       -      +
    485C  GLN*     1.3    63.0    +      -       +      +
    487C  PHE*     2.6    35.8    +      -       -      +
    488C  PHE*     3.3     8.4    +      -       +      +
    667C  PHE*     4.9     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 485 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481C  ASN      3.3     8.4    +      -       -      +
    482C  GLU*     2.8    14.1    +      -       -      +
    484C  LEU*     1.3    83.2    -      -       +      +
    486C  GLN*     1.3    54.9    +      -       -      +
    488C  PHE*     2.8    28.3    +      -       +      +
    489C  ASN*     2.4    25.3    +      -       -      +
    514C  MET*     3.8    14.1    -      -       -      +
    516C  LEU*     5.3     4.9    -      -       +      -
    583C  TYR*     4.7    22.4    -      -       +      -
    693C  CYS      3.5    19.9    +      -       -      +
    694C  ASN*     3.3    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 486 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    482C  GLU      3.0     5.7    +      -       -      +
    483C  ARG*     3.2    11.6    -      -       -      +
    485C  GLN*     1.3    79.9    -      -       -      +
    487C  PHE*     1.3    65.9    +      -       -      +
    489C  ASN*     3.1    15.7    +      -       +      +
    490C  HIS*     2.9    31.9    +      -       -      +
    494C  ILE*     5.9     2.2    -      -       -      +
    514C  MET      5.8     0.2    +      -       -      -
    515C  ASP*     4.1    17.1    +      -       -      +
    516C  LEU*     4.2    22.5    -      -       +      +
    517C  GLN*     4.3    10.9    -      -       -      +
    520C  ILE*     4.1    18.8    -      -       +      -
    657C  MET*     4.8    10.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 487 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173C  LEU*     3.9    26.0    -      -       +      -
    483C  ARG*     3.3     5.5    +      -       -      +
    484C  LEU*     2.6    28.4    +      -       +      +
    486C  GLN*     1.3    77.9    +      -       -      +
    488C  PHE*     1.3    64.2    +      -       -      -
    490C  HIS*     3.0    10.4    +      +       +      +
    491C  HIS*     2.9    38.8    +      -       +      +
    495C  LEU*     6.2     0.4    -      -       +      -
    657C  MET*     4.5    27.1    -      -       +      -
    660C  LEU*     4.4    16.6    -      -       +      -
    661C  TYR*     4.1    41.5    -      +       +      -
    663C  THR*     4.8     0.9    -      -       -      -
    665C  PRO*     4.4    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 488 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119C  PHE*     3.7    41.5    -      +       +      -
    484C  LEU*     3.3     7.9    +      -       +      +
    485C  GLN*     2.8    16.5    +      -       -      +
    487C  PHE*     1.3    86.0    -      -       +      +
    489C  ASN*     1.3    57.4    +      -       -      +
    491C  HIS*     3.9     3.5    -      +       -      -
    492C  MET*     2.4    95.5    +      -       +      +
    667C  PHE*     4.1    33.4    -      +       +      -
    694C  ASN      4.3    19.3    -      -       -      -
    695C  GLY      4.5     3.8    -      -       -      -
    696C  VAL*     6.4     0.2    -      -       -      -
    699C  GLY*     4.8     3.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 489 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    485C  GLN*     2.4    34.5    +      -       -      +
    486C  GLN*     3.3    20.2    -      -       +      +
    488C  PHE*     1.3    77.0    -      -       -      +
    490C  HIS*     1.3    62.5    +      -       -      +
    492C  MET*     4.0    10.6    -      -       -      +
    493C  PHE*     3.0    23.3    +      -       -      +
    494C  ILE*     3.4    10.1    +      -       +      +
    514C  MET*     2.3    69.9    -      -       -      +
    515C  ASP*     4.8     1.4    +      -       -      -
    516C  LEU*     5.3     4.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 490 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    486C  GLN*     2.9    26.4    +      -       -      +
    487C  PHE*     3.0    13.9    +      +       +      +
    489C  ASN*     1.3    76.7    -      -       -      +
    491C  HIS*     1.3    58.7    +      -       +      +
    492C  MET      3.2     0.9    +      -       -      -
    494C  ILE*     2.3    59.2    +      -       +      +
    495C  LEU*     2.6    58.6    +      -       +      +
    657C  MET*     6.2     2.9    -      -       +      +
    661C  TYR*     4.1    20.6    +      +       -      -
----------------------------------------------------------
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Residues in contact with HIS 491 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119C  PHE*     4.5    17.8    -      +       -      -
    487C  PHE*     2.9    27.5    +      +       +      +
    488C  PHE*     4.4     4.3    -      +       -      +
    490C  HIS*     1.3    79.3    -      -       +      +
    492C  MET*     1.3    60.6    +      -       +      +
    495C  LEU*     2.7    39.9    -      -       +      +
    496C  GLU*     3.9    15.3    +      -       -      +
    663C  THR      4.7     1.8    +      -       -      -
    664C  HIS*     6.5     0.2    -      +       -      -
    665C  PRO*     3.0    52.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 492 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119C  PHE*     5.2     7.0    -      -       +      -
    488C  PHE*     2.4    80.3    +      -       +      +
    489C  ASN*     4.0     7.9    -      -       -      +
    490C  HIS      3.1     0.2    -      -       -      -
    491C  HIS*     1.3    84.4    -      -       +      +
    493C  PHE*     1.3   100.5    +      -       +      +
    496C  GLU*     2.6    27.3    -      -       -      +
    514C  MET*     4.7     1.3    -      -       +      -
    695C  GLY      4.4     3.6    -      -       -      +
    699C  GLY*     3.3    24.0    -      -       -      +
    702C  ILE*     4.2    16.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 493 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    489C  ASN*     3.0    16.4    +      -       -      +
    492C  MET*     1.3   119.5    -      -       +      +
    494C  ILE*     1.3    72.8    +      -       +      +
    495C  LEU      3.1     1.4    +      -       -      -
    496C  GLU*     3.6     9.3    +      -       -      +
    497C  GLN*     3.7    13.7    +      -       -      +
    509C  PHE*     5.5     5.3    -      -       +      -
    510C  ILE*     5.6     1.6    -      -       -      +
    512C  PHE*     2.5    78.2    -      +       +      -
    514C  MET*     4.1    14.4    -      -       +      -
    698C  GLU*     3.1    35.2    -      -       +      -
    699C  GLY*     4.2     0.2    -      -       -      -
    702C  ILE*     3.3    13.7    -      -       +      -
----------------------------------------------------------
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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