Contacts of the helix formed by residues 568 - 593 (chain C) in PDB entry 3U1K


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ILE 568 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224C  SER*     4.0    22.8    +      -       -      +
    226C  ILE*     3.9    18.4    -      -       +      -
    245C  ILE*     4.1    12.1    -      -       +      -
    246C  LYS*     3.9    35.4    -      -       +      +
    249C  VAL*     5.2     7.0    -      -       +      -
    566C  ILE      3.7     1.6    +      -       -      -
    567C  PRO*     1.3    72.0    -      -       +      +
    569C  LYS*     1.3    58.2    +      -       -      +
    571C  VAL*     3.0     2.8    +      -       -      +
    572C  MET*     2.8    61.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 569 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527C  TYR*     3.5    17.5    -      -       +      +
    567C  PRO*     4.3     7.8    -      -       +      +
    568C  ILE*     1.3    81.5    -      -       -      +
    570C  ILE*     1.3    58.3    +      -       +      +
    572C  MET*     3.3     9.0    +      -       -      +
    573C  GLU*     3.0    60.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 570 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    513C  LEU*     4.0    23.8    -      -       +      -
    524C  ILE*     4.0    14.6    -      -       +      -
    527C  TYR*     3.8    43.5    -      -       +      +
    529C  LEU*     3.9    14.3    -      -       +      +
    543C  MET*     5.2     1.3    -      -       +      -
    566C  ILE*     4.3    17.7    -      -       +      -
    567C  PRO*     3.0    36.6    +      -       +      +
    569C  LYS*     1.3    76.1    -      -       +      +
    571C  VAL*     1.3    61.0    +      -       -      +
    573C  GLU*     3.4     8.5    +      -       -      +
    574C  ALA*     2.9    27.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 571 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226C  ILE*     3.5    31.2    -      -       +      -
    229C  LEU*     3.7    24.9    -      -       +      -
    245C  ILE*     4.2     1.8    -      -       +      -
    543C  MET*     6.3     0.2    -      -       -      -
    545C  PHE*     4.1    11.2    -      -       +      -
    561C  ILE*     5.0     1.3    -      -       +      -
    566C  ILE*     3.8    28.3    -      -       +      -
    567C  PRO      3.4     2.4    +      -       -      +
    568C  ILE      3.0     7.5    +      -       -      +
    570C  ILE*     1.3    77.3    -      -       -      +
    572C  MET*     1.3    78.7    +      -       +      +
    574C  ALA*     3.0     8.1    +      -       -      +
    575C  ILE*     3.0    32.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 572 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238C  GLN*     5.2     0.5    -      -       -      +
    242C  CYS*     3.5    33.5    -      -       +      +
    245C  ILE*     3.9    11.2    -      -       +      -
    246C  LYS*     3.9    18.2    -      -       -      +
    568C  ILE*     2.8    50.6    +      -       +      +
    569C  LYS*     3.6     9.0    -      -       -      +
    571C  VAL*     1.3    89.0    -      -       +      +
    573C  GLU*     1.3    63.4    +      -       +      +
    575C  ILE*     3.3    19.2    +      -       +      +
    576C  GLN*     3.2    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 573 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    527C  TYR*     2.6    33.9    +      -       -      -
    529C  LEU*     3.5    14.5    -      -       +      +
    569C  LYS*     3.0    55.3    +      -       +      +
    570C  ILE*     3.7     1.4    -      -       -      +
    572C  MET*     1.3    78.2    -      -       +      +
    574C  ALA*     1.3    57.1    +      -       -      +
    576C  GLN*     3.6     5.6    +      -       -      +
    577C  GLN*     3.0    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 574 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    511C  ILE*     3.3    16.0    -      -       +      +
    529C  LEU*     3.7    23.3    -      -       +      +
    543C  MET*     4.0    15.7    -      -       +      -
    545C  PHE*     4.1    17.3    -      -       +      -
    570C  ILE      2.9    16.9    +      -       -      +
    571C  VAL*     3.0     6.7    +      -       -      +
    573C  GLU*     1.3    73.9    -      -       -      +
    575C  ILE*     1.3    60.6    +      -       -      +
    577C  GLN*     4.4     2.7    -      -       -      -
    578C  ALA*     2.8    26.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 575 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238C  GLN*     3.9    28.3    -      -       +      +
    241C  PHE*     4.3    10.1    -      -       +      -
    242C  CYS*     4.0     8.1    -      -       -      -
    245C  ILE*     3.7    29.8    -      -       +      -
    545C  PHE*     3.6    20.6    -      -       +      -
    547C  ILE*     4.3     8.9    -      -       +      +
    554C  ILE*     4.1    17.0    -      -       +      -
    557C  LEU*     5.0     0.2    -      -       +      -
    571C  VAL*     3.0    21.2    +      -       +      +
    572C  MET*     3.6    18.2    -      -       +      +
    573C  GLU      3.3     0.2    -      -       -      -
    574C  ALA*     1.3    77.1    -      -       -      +
    576C  GLN*     1.3    62.1    +      -       -      +
    578C  ALA*     3.3     6.6    +      -       -      +
    579C  SER*     3.0    21.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 576 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238C  GLN*     2.9    30.0    +      -       -      +
    572C  MET      3.2    14.0    +      -       -      +
    573C  GLU*     4.0     5.6    -      -       -      +
    575C  ILE*     1.3    78.8    -      -       -      +
    577C  GLN*     1.3    64.1    +      -       -      +
    579C  SER*     2.8    37.0    +      -       -      -
    580C  VAL*     3.2    18.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 577 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    364C  LEU      3.3     4.2    +      -       -      -
    365C  THR*     3.9    18.0    -      -       +      +
    511C  ILE*     4.0     5.0    -      -       +      +
    529C  LEU*     3.2    51.7    +      -       -      +
    530C  LEU      3.8     0.8    -      -       -      +
    531C  THR*     2.7    37.0    -      -       +      +
    573C  GLU      3.0    17.3    +      -       -      +
    574C  ALA*     3.8     5.6    -      -       -      +
    576C  GLN*     1.3    76.4    -      -       -      +
    578C  ALA*     1.3    62.7    +      -       -      +
    580C  VAL*     3.5     9.0    +      -       +      +
    581C  ALA*     3.4    18.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 578 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    509C  VAL*     3.9     8.4    -      -       +      +
    511C  ILE*     3.0    26.4    -      -       +      +
    547C  ILE*     3.3    32.8    -      -       +      -
    574C  ALA      2.8    16.0    +      -       -      +
    575C  ILE      3.6     4.9    -      -       -      +
    576C  GLN      3.2     0.2    -      -       -      -
    577C  GLN*     1.3    72.4    -      -       -      +
    579C  SER*     1.3    53.5    +      -       -      +
    581C  ALA*     3.1     3.7    +      -       -      +
    582C  LYS*     2.7    37.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 579 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238C  GLN*     3.7    19.7    -      -       -      -
    575C  ILE*     3.0     8.8    +      -       -      -
    576C  GLN*     2.8    35.1    +      -       -      -
    578C  ALA*     1.3    75.8    -      -       -      +
    580C  VAL*     1.3    62.9    +      -       -      +
    582C  LYS*     3.4    20.9    +      -       -      +
    583C  LYS*     3.1    40.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 580 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365C  THR*     6.1     3.6    -      -       -      +
    576C  GLN*     3.2    26.2    +      -       -      +
    577C  GLN*     3.7    10.5    -      -       +      +
    578C  ALA      3.2     0.4    -      -       -      -
    579C  SER*     1.3    82.5    +      -       -      +
    581C  ALA*     1.3    62.0    +      -       -      +
    583C  LYS*     3.4     9.2    +      -       -      +
    584C  GLU*     3.2    40.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 581 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365C  THR      5.3     2.0    -      -       -      +
    367C  LEU*     3.8    23.7    -      -       +      +
    509C  VAL*     4.2    15.7    -      -       +      -
    531C  THR*     4.6    14.1    -      -       +      +
    577C  GLN      3.4     8.7    +      -       -      +
    578C  ALA*     3.1     7.9    +      -       -      +
    580C  VAL*     1.3    76.8    -      -       -      +
    582C  LYS*     1.3    66.3    +      -       -      +
    584C  GLU*     3.2    11.3    +      -       -      +
    585C  ILE*     3.0    29.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 582 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    507C  ALA*     3.7    16.6    -      -       +      +
    508C  GLY*     5.8     0.4    -      -       -      -
    509C  VAL*     4.6     6.6    -      -       +      +
    547C  ILE      5.7     1.6    -      -       -      +
    548C  ALA*     4.5     2.8    -      -       -      -
    549C  GLY*     3.6    24.5    -      -       -      +
    550C  THR      2.8    27.5    +      -       -      +
    551C  ASN*     4.8     5.9    +      -       -      +
    552C  LYS      5.0     0.4    -      -       -      -
    553C  GLY*     2.8    24.4    +      -       -      +
    554C  ILE*     4.6     7.9    -      -       -      +
    578C  ALA      2.7    18.4    +      -       -      +
    579C  SER*     3.6    23.1    -      -       -      +
    580C  VAL      3.4     0.2    -      -       -      -
    581C  ALA*     1.3    72.0    -      -       -      +
    583C  LYS*     1.3    58.5    +      -       -      +
    585C  ILE*     3.4    11.4    +      -       -      +
    586C  LEU*     3.0    40.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 583 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    551C  ASN*     3.3    46.5    +      -       -      +
    552C  LYS*     5.8     0.2    -      -       -      +
    579C  SER*     3.1    29.5    +      -       -      +
    580C  VAL*     3.7     7.4    -      -       -      +
    581C  ALA      3.1     0.2    -      -       -      -
    582C  LYS*     1.3    79.6    -      -       +      +
    584C  GLU*     1.3    64.6    +      -       +      +
    586C  LEU*     3.5     7.1    +      -       -      +
    587C  GLN*     3.1    28.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 584 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    365C  THR      5.1     5.7    -      -       -      +
    366C  SER*     5.7     0.3    -      -       -      -
    367C  LEU*     3.7    29.8    +      -       +      +
    580C  VAL*     3.2    33.3    +      -       +      +
    581C  ALA*     3.2     9.3    +      -       -      +
    583C  LYS*     1.3    78.6    -      -       +      +
    585C  ILE*     1.3    61.3    +      -       -      +
    587C  GLN*     3.3    10.3    +      -       -      +
    588C  ILE*     3.3    27.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 585 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367C  LEU*     3.6    24.9    -      -       +      -
    370C  VAL*     4.8     9.0    -      -       +      -
    386C  PHE*     3.9    20.9    -      -       +      -
    388C  ARG*     4.7     8.3    -      -       -      +
    489C  CYS*     4.0     1.6    -      -       -      -
    507C  ALA*     3.9     7.2    -      -       +      -
    508C  GLY      3.5    24.9    -      -       -      +
    509C  VAL*     4.1    15.0    -      -       +      -
    581C  ALA      3.0    23.4    +      -       -      +
    582C  LYS*     3.7     6.1    -      -       -      +
    584C  GLU*     1.3    75.7    -      -       -      +
    586C  LEU*     1.3    59.7    +      -       -      +
    588C  ILE*     3.0    11.0    +      -       -      +
    589C  MET*     2.8    46.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 586 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    505C  ALA*     3.7    31.2    -      -       +      +
    506C  VAL      3.8    11.9    -      -       -      +
    507C  ALA*     3.6    19.3    -      -       +      -
    549C  GLY      4.7     0.2    -      -       -      +
    550C  THR*     3.8     7.2    -      -       -      -
    551C  ASN*     3.5    43.1    -      -       +      +
    582C  LYS*     3.0    30.1    +      -       +      +
    583C  LYS*     3.8     4.7    -      -       -      +
    585C  ILE*     1.3    76.1    -      -       -      +
    587C  GLN*     1.3    54.4    +      -       -      +
    589C  MET*     3.5     8.5    -      -       +      +
    590C  ASN*     2.7    47.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 587 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    583C  LYS      3.1    15.6    +      -       -      +
    584C  GLU*     3.4    14.1    -      -       -      +
    586C  LEU*     1.3    78.0    -      -       -      +
    588C  ILE*     1.3    64.9    +      -       +      +
    590C  ASN*     3.5     7.3    +      -       -      +
    591C  LYS*     3.5    30.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 588 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    367C  LEU*     5.2     4.3    -      -       +      -
    370C  VAL*     3.5    59.2    -      -       +      +
    371C  SER*     4.7     2.2    -      -       -      -
    372C  CYS*     4.6     8.5    -      -       -      -
    584C  GLU*     3.3    18.4    +      -       +      +
    585C  ILE*     3.0     6.3    +      -       -      +
    587C  GLN*     1.3    73.9    -      -       +      +
    589C  MET*     1.3    68.0    +      -       -      +
    591C  LYS*     3.0    32.0    +      -       +      +
    592C  THR*     3.6     6.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 589 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    370C  VAL*     5.7     0.2    -      -       +      -
    372C  CYS*     4.0    13.9    -      -       -      -
    386C  PHE*     4.0    17.5    -      -       +      -
    489C  CYS*     3.5    32.1    -      -       -      +
    492C  SER*     3.7    12.3    -      -       -      +
    493C  LEU*     4.0    17.4    -      -       +      +
    505C  ALA*     4.8     4.3    -      -       +      -
    506C  VAL      3.4    26.2    -      -       -      +
    507C  ALA*     4.0     6.1    -      -       -      -
    585C  ILE*     2.8    35.4    +      -       -      +
    586C  LEU*     3.5    17.0    -      -       +      +
    588C  ILE*     1.3    73.5    -      -       +      +
    590C  ASN*     1.3    59.6    +      -       -      +
    592C  THR*     2.8    22.2    +      -       -      -
    593C  ILE      3.2    12.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 590 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    505C  ALA*     4.1    21.3    -      -       -      +
    586C  LEU*     2.7    31.9    +      -       -      +
    587C  GLN*     3.9     8.1    -      -       -      +
    588C  ILE      3.2     0.4    -      -       -      -
    589C  MET*     1.3    75.1    -      -       -      +
    591C  LYS*     1.3    61.4    +      -       -      +
    592C  THR      3.2     0.6    +      -       -      -
    593C  ILE*     3.3    10.6    +      -       -      +
    594C  SER*     3.5    41.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 591 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    587C  GLN*     3.5    21.7    +      -       -      +
    588C  ILE*     3.0    20.8    +      -       +      +
    590C  ASN*     1.3    79.0    -      -       -      +
    592C  THR*     1.3    60.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 592 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    372C  CYS*     3.2    31.7    +      -       -      +
    373C  GLU*     3.8    26.9    -      -       -      -
    374C  VAL*     4.1    25.0    -      -       +      +
    493C  LEU*     4.8     2.0    -      -       +      -
    588C  ILE*     3.6     2.6    +      -       -      +
    589C  MET      2.8    10.2    +      -       -      -
    591C  LYS*     1.3    82.6    -      -       -      +
    593C  ILE*     1.3    60.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 593 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    374C  VAL*     4.1    19.1    -      -       +      -
    493C  LEU*     3.5    31.3    -      -       +      +
    496C  MET*     3.8    27.9    -      -       +      +
    497C  ASP*     3.8    22.0    -      -       +      +
    589C  MET*     3.2    11.9    +      -       -      +
    590C  ASN*     3.3    11.2    -      -       -      +
    591C  LYS      3.6     0.4    -      -       -      -
    592C  THR*     1.3    80.8    -      -       +      +
    594C  SER*     1.3    60.0    +      -       -      +
    595C  LYS      3.2    26.7    -      -       -      +
    597C  ARG*     4.7     4.3    -      -       +      +
----------------------------------------------------------
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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