Contacts of the helix formed by residues 71 - 97 (chain G) in PDB entry 6BAA


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 HIS 71 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67G  HIS*     3.1    46.9    +      +       +      +
     68G  PHE      3.2    20.6    -      -       -      +
     70G  GLY*     1.3    75.2    -      -       -      +
     72G  ASN*     1.3    92.5    +      -       -      +
     73G  LEU      3.3     2.2    -      -       -      -
     74G  ARG*     3.2     8.5    -      -       -      +
     75G  TRP*     3.0    47.5    +      +       -      -
    124G  TYR*     3.3    27.8    -      -       +      +
    128G  GLU*     3.6     8.5    +      -       -      +
    222G  VAL      4.4     4.9    -      -       -      -
    224G  LEU      5.4     0.9    -      -       -      -
    227G  LYS*     5.9     1.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 72 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70G  GLY*     3.8     1.1    -      -       -      -
     71G  HIS*     1.3   105.8    +      -       -      +
     73G  LEU*     1.3    62.8    +      -       -      +
     75G  TRP*     3.1    11.0    +      -       -      +
     76G  ILE*     3.0    26.4    +      -       +      +
    224G  LEU*     4.0    20.8    -      -       +      +
    227G  LYS*     5.4     9.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 73 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70G  GLY*     3.3    37.5    -      -       -      +
     72G  ASN*     1.3    75.7    -      -       +      +
     74G  ARG*     1.3    61.1    +      -       -      +
     76G  ILE*     3.4    15.9    -      -       +      +
     77G  LEU*     2.9    38.2    +      -       +      +
    181G  MET*     4.8    12.1    -      -       +      -
    185G  VAL*     3.8    30.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 74 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70G  GLY      4.6     2.9    +      -       -      +
     71G  HIS*     3.2    20.1    -      -       -      +
     73G  LEU*     1.3    83.0    -      -       -      +
     75G  TRP*     1.3    64.6    +      -       +      +
     77G  LEU*     3.9     5.8    -      -       -      +
     78G  THR*     3.0    38.3    +      -       +      +
    121G  VAL*     5.5     2.5    -      -       +      -
    124G  TYR*     3.3    57.5    +      -       +      +
    136G  LEU*     5.9     1.0    -      -       -      +
    139G  LEU*     4.3    15.5    -      -       -      +
    143G  TRP*     5.4     6.2    -      -       -      +
    182G  LEU*     4.5    16.7    +      -       -      +
    185G  VAL*     3.4    32.5    +      -       +      +
    186G  GLU*     3.4    34.8    +      -       -      +
    189G  VAL*     4.5     6.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 75 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71G  HIS*     3.0    46.9    +      -       -      +
     72G  ASN*     3.1     9.4    +      -       -      +
     74G  ARG*     1.3    77.3    -      -       +      +
     76G  ILE*     1.3    57.7    +      -       -      +
     78G  THR*     2.3    28.6    +      -       -      -
     79G  PHE*     3.0    21.8    +      +       +      -
    121G  VAL*     3.6    31.4    -      -       +      -
    124G  TYR*     4.6     9.6    -      +       -      -
    125G  HIS*     4.0    25.1    -      +       +      -
    128G  GLU*     4.0    17.4    +      -       -      -
    223G  ASN*     3.6    26.6    -      -       +      +
    224G  LEU*     3.7    39.2    -      -       +      +
    225G  LEU*     3.6    29.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 76 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72G  ASN*     3.0    14.2    +      -       +      +
     73G  LEU*     3.4    20.9    -      -       +      +
     75G  TRP*     1.3    76.7    -      -       -      +
     77G  LEU*     1.3    74.5    +      -       +      +
     79G  PHE*     3.2    10.8    +      -       +      +
     80G  ILE*     3.0    38.5    +      -       +      +
    224G  LEU*     4.2    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 77 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73G  LEU*     2.9    27.7    +      -       +      +
     74G  ARG*     3.9     4.3    -      -       -      +
     76G  ILE*     1.3    87.1    -      -       +      +
     78G  THR*     1.3    60.3    +      -       +      +
     80G  ILE*     3.4    12.0    +      -       +      +
     81G  LEU*     2.9    34.5    +      -       -      +
    178G  LEU*     3.7    24.4    -      -       +      +
    181G  MET*     3.6    41.7    -      -       +      -
    182G  LEU*     3.8    31.4    -      -       +      +
    185G  VAL*     4.6     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 78 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74G  ARG*     3.0    25.9    +      -       -      +
     75G  TRP*     2.3    35.0    +      -       -      -
     77G  LEU*     1.3    76.9    -      -       +      +
     79G  PHE*     1.3    63.0    +      -       -      +
     81G  LEU*     3.4    16.2    -      -       +      +
     82G  LEU*     2.9    37.0    +      -       +      +
    117G  ALA*     5.4     1.1    -      -       +      +
    120G  SER*     5.2     6.5    -      -       -      +
    121G  VAL*     3.8    34.3    -      -       +      +
    143G  TRP*     5.7     6.1    -      -       +      -
    182G  LEU*     6.1     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 79 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75G  TRP*     3.0    35.1    +      +       +      -
     76G  ILE*     3.2    13.2    +      -       +      +
     78G  THR*     1.3    78.3    +      -       -      +
     80G  ILE*     1.3    61.2    +      -       +      +
     82G  LEU*     3.2    14.8    +      -       +      +
     83G  PHE*     3.0    25.0    +      -       -      +
    224G  LEU*     3.7    27.6    -      -       +      -
    225G  LEU*     3.6    38.8    -      -       +      -
    368G  LEU*     5.9    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 80 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76G  ILE*     3.0    22.8    +      -       +      +
     77G  LEU*     3.5    14.1    -      -       +      +
     79G  PHE*     1.3    78.2    -      -       +      +
     81G  LEU*     1.3    62.5    +      -       -      +
     83G  PHE*     3.3    12.7    -      -       +      +
     84G  VAL*     3.0    35.4    +      -       +      +
    174G  LEU*     6.1     0.7    -      -       +      -
    178G  LEU*     3.6    38.1    -      -       +      -
    368G  LEU*     6.2     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 81 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77G  LEU      2.9    24.5    +      -       -      +
     78G  THR*     3.4    20.6    -      -       +      +
     80G  ILE*     1.3    78.1    -      -       -      +
     82G  LEU*     1.3    63.7    +      -       +      +
     84G  VAL*     3.3    12.2    -      -       +      +
     85G  LEU*     2.8    42.1    +      -       +      +
    117G  ALA*     3.7    29.4    -      -       +      -
    143G  TRP*     4.8     7.9    -      -       +      -
    175G  LEU*     6.0     2.7    -      -       +      -
    178G  LEU*     4.9    11.2    -      -       +      -
    179G  TYR*     4.3    22.4    -      -       +      +
    182G  LEU*     3.7    29.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 82 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78G  THR*     2.9    28.4    +      -       -      +
     79G  PHE*     3.5    17.9    -      -       +      +
     81G  LEU*     1.3    77.8    -      -       +      +
     83G  PHE*     1.3    61.4    +      -       -      +
     85G  LEU*     3.3     6.1    +      -       -      +
     86G  VAL*     3.0    30.4    +      -       +      +
    114G  PHE*     3.9    22.8    -      -       +      -
    117G  ALA*     3.4    37.9    -      -       +      -
    118G  ILE*     4.0    23.3    -      -       +      +
    121G  VAL*     6.1     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 83 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79G  PHE      3.0    13.6    +      -       -      +
     80G  ILE*     3.3    17.0    -      -       +      +
     81G  LEU      3.2     0.2    -      -       -      -
     82G  LEU*     1.3    77.6    -      -       -      +
     84G  VAL*     1.3    76.2    +      -       +      +
     86G  VAL*     3.3     4.7    +      -       -      +
     87G  CYS*     3.1    33.1    +      -       -      -
    361G  LEU*     3.9    30.7    -      -       +      -
    364G  LEU*     3.6    36.1    -      -       +      +
    368G  LEU*     5.5     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 84 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     80G  ILE*     3.0    21.3    +      -       +      +
     81G  LEU*     3.3    20.0    -      -       +      +
     83G  PHE*     1.3    86.5    -      -       +      +
     85G  LEU*     1.3    65.3    +      -       +      +
     87G  CYS*     3.0    11.3    +      -       +      +
     88G  GLU*     2.8    42.7    +      -       -      +
    171G  LEU*     5.7     4.0    -      -       +      -
    174G  LEU*     3.7    32.1    -      -       +      -
    175G  LEU*     4.5    13.0    -      -       +      -
    178G  LEU*     5.8     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 85 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81G  LEU*     2.8    36.0    +      -       +      +
     82G  LEU*     3.6     7.2    -      -       -      +
     84G  VAL*     1.3    78.6    -      -       +      +
     86G  VAL*     1.3    58.5    +      -       -      +
     88G  GLU*     2.9    21.0    +      -       +      +
     89G  ILE*     2.8    33.2    +      -       +      +
    110G  ALA*     4.2    11.0    -      -       +      +
    113G  ALA*     3.4    22.0    -      -       +      +
    114G  PHE*     3.4    41.5    -      -       +      +
    117G  ALA*     4.7     0.7    -      -       +      -
    175G  LEU*     3.6    24.9    -      -       +      -
    179G  TYR*     4.8     3.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 86 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82G  LEU      3.0    16.5    +      -       -      +
     83G  PHE      3.5     8.1    -      -       -      +
     85G  LEU*     1.3    74.2    -      -       -      +
     87G  CYS*     1.3    64.3    +      -       -      +
     89G  ILE*     3.3    12.0    +      -       +      +
     90G  ALA*     3.0    21.5    +      -       -      +
    114G  PHE*     4.5    20.9    -      -       +      -
    360G  VAL*     3.6    31.0    -      -       +      -
    361G  LEU*     5.9     2.2    -      -       +      -
    364G  LEU*     4.3    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 87 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83G  PHE*     3.1    33.6    +      -       -      -
     84G  VAL*     3.0    16.2    +      -       +      +
     86G  VAL*     1.3    77.0    -      -       -      +
     88G  GLU*     1.3    58.9    +      -       -      +
     90G  ALA*     3.2     9.8    +      -       -      +
     91G  GLU*     2.9    24.3    +      -       -      +
    171G  LEU*     5.0    15.9    -      -       +      +
    361G  LEU*     4.1    27.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 88 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84G  VAL*     2.8    37.4    +      -       -      +
     85G  LEU*     2.9    25.9    +      -       -      +
     87G  CYS*     1.3    73.5    -      -       -      +
     89G  ILE*     1.3    61.1    +      -       -      +
     91G  GLU*     3.6    11.8    -      -       -      +
     92G  GLY*     2.8    25.1    +      -       -      -
    106G  LEU      5.5     0.2    -      -       -      +
    107G  TYR*     5.5     0.9    -      -       -      +
    110G  ALA*     4.7    14.6    -      -       +      +
    168G  ARG*     5.9     3.6    -      -       +      -
    171G  LEU*     3.3    50.8    -      -       +      +
    172G  THR*     5.9     1.3    -      -       -      +
    174G  LEU*     5.3     0.2    -      -       -      +
    175G  LEU*     3.7    15.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 89 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85G  LEU      2.8    17.9    +      -       -      +
     86G  VAL*     3.4    15.9    -      -       +      +
     88G  GLU*     1.3    77.0    -      -       -      +
     90G  ALA*     1.3    58.4    +      -       -      +
     92G  GLY*     3.2     2.2    +      -       -      -
     93G  ILE*     3.0    39.8    +      -       +      +
    107G  TYR*     3.5    20.5    -      -       +      +
    110G  ALA*     3.8     7.4    -      -       +      +
    111G  GLY*     3.4    35.7    -      -       -      +
    114G  PHE*     5.6     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 90 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86G  VAL*     3.0    13.1    +      -       +      +
     87G  CYS*     3.3    13.0    -      -       -      +
     89G  ILE*     1.3    79.4    -      -       -      +
     91G  GLU*     1.3    55.8    +      -       -      +
     93G  ILE*     3.4     6.3    +      -       -      +
     94G  LEU*     2.9    30.0    +      -       -      +
    357G  VAL*     4.1    31.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 91 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87G  CYS      2.9    13.5    +      -       -      +
     88G  GLU*     3.3    13.8    +      -       -      +
     90G  ALA*     1.3    76.5    -      -       -      +
     92G  GLY*     1.3    58.7    +      -       -      +
     94G  LEU*     3.4    11.1    +      -       +      +
     95G  SER*     2.9    33.9    +      -       -      +
    167G  LEU*     3.3    30.1    -      -       +      +
    168G  ARG*     2.8    62.4    +      -       -      +
    171G  LEU*     3.3    19.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 92 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88G  GLU      2.8    13.8    +      -       -      -
     89G  ILE      3.2     3.5    +      -       -      -
     91G  GLU*     1.3    78.3    -      -       -      +
     93G  ILE*     1.3    55.9    -      -       -      +
     95G  SER*     3.3     5.8    +      -       -      -
     96G  ASP*     2.9    28.9    +      -       -      +
    106G  LEU*     3.8    14.0    -      -       -      +
    107G  TYR*     3.7    24.3    -      -       -      +
    168G  ARG*     5.1     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 93 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89G  ILE*     3.0    27.1    +      -       +      +
     90G  ALA*     3.9     5.6    -      -       -      +
     92G  GLY*     1.3    73.0    -      -       -      +
     94G  LEU*     1.3    60.0    +      -       -      +
     96G  ASP*     3.3     5.8    +      -       +      +
     97G  GLY*     2.9    26.0    +      -       -      -
    107G  TYR*     3.7    38.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 94 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90G  ALA      2.9    17.0    +      -       -      +
     91G  GLU*     3.6    12.6    -      -       +      +
     93G  ILE*     1.3    78.3    -      -       -      +
     95G  SER*     1.3    66.0    +      -       -      +
     97G  GLY*     3.3    13.4    +      -       -      -
     98G  VAL*     4.5     1.2    +      -       -      +
    354G  ASN*     6.0     7.6    -      -       +      +
    357G  VAL*     6.2     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 95 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91G  GLU*     2.9    18.2    +      -       -      +
     92G  GLY*     3.7     5.6    -      -       -      -
     93G  ILE      3.2     0.2    -      -       -      -
     94G  LEU*     1.3    79.2    -      -       -      +
     96G  ASP*     1.3    65.6    +      -       -      +
     97G  GLY      3.3     0.5    +      -       -      -
     98G  VAL*     3.7    19.9    +      -       -      +
    103G  HIS*     5.6     1.4    +      -       -      -
    106G  LEU*     5.6    11.0    -      -       -      -
    168G  ARG*     2.6    31.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 96 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92G  GLY      2.9    17.0    +      -       -      +
     93G  ILE*     3.3     7.8    +      -       +      +
     95G  SER*     1.3    73.1    -      -       -      +
     97G  GLY*     1.3    55.5    +      -       -      +
     98G  VAL*     3.1     6.0    -      -       -      +
     99G  THR*     2.9    25.1    +      -       -      +
    101G  SER      3.4     6.6    -      -       -      +
    102G  ARG*     3.8    23.9    +      -       -      +
    103G  HIS*     3.3    43.6    +      -       +      +
    106G  LEU*     6.1     1.5    -      -       +      +
    107G  TYR*     3.2    30.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 97 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93G  ILE      2.9    15.0    +      -       -      -
     94G  LEU*     3.3     8.3    +      -       -      -
     95G  SER      3.1     2.6    -      -       -      -
     96G  ASP*     1.3    70.8    -      -       -      +
     98G  VAL*     1.3    63.4    +      -       -      +
     99G  THR*     3.2    14.6    +      -       -      +
----------------------------------------------------------
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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