Contacts of the helix formed by residues 108 - 136 (chain C) in PDB entry 2VD0


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 LYS 108 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106C  GLU*     3.1    25.2    +      -       -      +
    107C  LYS*     1.3    76.0    -      -       +      +
    109C  GLN*     1.3    66.5    +      -       -      +
    110C  ASP*     3.4     5.6    -      -       -      +
    111C  VAL*     3.1    27.7    +      -       +      +
    112C  LYS*     3.0    18.2    +      -       -      +
    115D  MET*     6.2     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 109 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106C  GLU      5.2     4.2    +      -       -      -
    107C  LYS      3.1    16.8    +      -       -      +
    108C  LYS*     1.3    69.7    -      -       -      +
    110C  ASP*     1.3    54.0    +      -       -      +
    112C  LYS*     3.1    21.9    +      -       -      +
    113C  GLU*     2.7    57.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 110 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108C  LYS*     4.8     3.2    -      -       -      +
    109C  GLN*     1.3    79.5    +      -       -      +
    111C  VAL*     1.3    72.3    +      -       -      +
    113C  GLU*     3.6    18.4    +      -       -      +
    114C  GLN*     3.3    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 111 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103C  PRO*     4.8     0.9    -      -       -      +
    106C  GLU*     4.0    19.3    -      -       -      +
    108C  LYS*     3.1    37.1    +      -       +      +
    110C  ASP*     1.3    90.0    -      -       -      +
    112C  LYS*     1.3    63.9    +      -       -      +
    114C  GLN*     4.6     1.9    -      -       -      +
    115C  MET*     3.2    26.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 112 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103C  PRO*     2.9    25.1    +      -       -      +
    104C  TRP*     2.8    33.3    +      -       -      +
    106C  GLU*     3.4    30.7    +      -       +      +
    108C  LYS      3.0    12.5    +      -       -      +
    109C  GLN*     3.2    28.0    -      -       -      +
    111C  VAL*     1.3    74.4    -      -       -      +
    113C  GLU*     1.3    68.9    +      -       +      +
    114C  GLN      3.3     0.2    +      -       -      -
    115C  MET*     3.4     1.9    +      -       -      +
    116C  PHE*     3.2    50.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 113 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109C  GLN*     2.7    53.1    +      -       -      +
    110C  ASP*     3.6    14.1    +      -       -      +
    112C  LYS*     1.3    76.8    -      -       +      +
    114C  GLN*     1.3    64.3    +      -       -      +
    116C  PHE*     3.7     5.1    +      -       -      +
    117C  ASN*     3.4    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 114 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110C  ASP      3.3    16.3    +      -       -      +
    111C  VAL*     4.6     2.0    -      -       -      +
    112C  LYS      3.3     0.8    -      -       -      -
    113C  GLU*     1.3    80.8    -      -       -      +
    115C  MET*     1.3    64.9    +      -       -      +
    117C  ASN*     3.1    21.9    +      -       -      +
    118C  GLU*     2.8    51.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 115 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101C  CYS*     4.5     8.1    -      -       +      +
    103C  PRO*     3.8    28.7    -      -       +      -
    111C  VAL*     3.2    22.3    +      -       +      +
    114C  GLN*     1.3    76.0    -      -       -      +
    116C  PHE*     1.3    62.2    +      -       -      +
    118C  GLU*     3.2    21.5    +      -       +      +
    119C  LEU*     3.1    51.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 116 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102C  PHE*     3.5    33.7    -      +       +      -
    103C  PRO*     3.7    26.0    -      -       +      -
    104C  TRP*     4.0    28.0    -      +       -      -
    112C  LYS*     3.2    52.7    +      -       +      +
    113C  GLU*     3.8     7.2    -      -       -      +
    115C  MET*     1.3    76.9    -      -       -      +
    117C  ASN*     1.3    66.0    +      -       -      +
    119C  LEU*     3.4     2.1    +      -       -      +
    120C  LEU*     3.0    34.5    +      -       +      +
    163C  PHE*     3.8    43.7    -      +       +      -
----------------------------------------------------------
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Residues in contact with ASN 117 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113C  GLU      3.4    13.8    +      -       -      +
    114C  GLN*     3.1    26.9    +      -       -      +
    116C  PHE*     1.3    76.4    -      -       -      +
    118C  GLU*     1.3    65.6    +      -       -      +
    120C  LEU*     4.7     5.4    -      -       -      +
    121C  THR*     2.9    39.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 118 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  GLN*     2.8    64.5    +      -       -      +
    115C  MET*     3.2    24.3    +      -       +      +
    117C  ASN*     1.3    76.1    -      -       -      +
    119C  LEU*     1.3    58.3    +      -       +      +
    121C  THR*     3.9     0.6    -      -       -      -
    122C  TYR*     2.9    40.3    +      -       +      +
    123C  ASN*     4.4     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 119 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98C  PHE*     3.6     9.7    -      -       +      -
    101C  CYS*     3.7    25.6    -      -       +      +
    102C  PHE*     3.6    59.7    -      -       +      +
    103C  PRO*     4.2     3.1    -      -       +      -
    115C  MET*     3.1    37.9    +      -       +      +
    116C  PHE      3.8     2.7    -      -       -      +
    118C  GLU*     1.3    75.0    -      -       +      +
    120C  LEU*     1.3    58.0    +      -       -      +
    123C  ASN*     3.0    31.9    +      -       -      +
    124C  ALA      2.9    25.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 120 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102C  PHE*     3.7    24.7    -      -       +      -
    116C  PHE*     3.0    28.5    +      -       +      +
    117C  ASN*     4.1     6.1    -      -       -      +
    119C  LEU*     1.3    75.9    -      -       -      +
    121C  THR*     1.3    63.1    +      -       -      +
    124C  ALA*     3.4     8.1    -      -       +      +
    125C  PRO*     3.3    19.8    -      -       -      +
    160C  LEU*     4.3    17.3    -      -       +      +
    163C  PHE*     3.4    44.6    -      -       +      +
    164C  LYS*     3.3    39.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 121 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117C  ASN*     2.9    25.7    +      -       -      +
    118C  GLU*     4.6     0.7    -      -       -      -
    120C  LEU*     1.3    80.3    -      -       -      +
    122C  TYR*     1.3    60.1    +      -       -      +
    125C  PRO*     4.0    11.9    -      -       -      +
    164C  LYS*     4.8    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 122 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118C  GLU*     2.9    21.4    +      -       +      +
    121C  THR*     1.3    82.3    -      -       -      +
    123C  ASN*     1.3    75.7    +      -       -      +
    125C  PRO*     3.8     6.1    -      -       -      +
    126C  HIS*     3.3    35.3    +      +       -      -
----------------------------------------------------------
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Residues in contact with ASN 123 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98C  PHE*     3.5    19.9    -      -       +      -
    101C  CYS*     5.7     3.2    -      -       -      -
    118C  GLU*     3.9     6.2    -      -       -      +
    119C  LEU*     3.0    29.3    +      -       -      +
    122C  TYR*     1.3    96.1    -      -       -      +
    124C  ALA*     1.3    67.1    +      -       -      +
    126C  HIS*     3.2     9.5    +      -       -      +
    127C  LEU*     3.2    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 124 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98C  PHE*     3.7    27.3    -      -       +      -
    119C  LEU      2.9     6.9    +      -       -      +
    120C  LEU*     3.4    24.7    -      -       +      +
    123C  ASN*     1.3    74.3    -      -       -      +
    125C  PRO*     1.4    64.1    -      -       +      +
    127C  LEU*     3.1     6.6    +      -       -      +
    128C  MET*     3.0    29.2    +      -       +      +
    160C  LEU*     5.4     0.4    -      -       +      -
    164C  LYS*     4.5     1.1    -      -       +      -
    167C  LEU*     3.9    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PRO 125 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120C  LEU      3.3    18.4    -      -       -      +
    121C  THR      4.0    11.7    -      -       -      +
    122C  TYR      3.8    11.4    -      -       -      +
    123C  ASN      3.6     3.6    -      -       -      -
    124C  ALA*     1.4    88.9    -      -       +      +
    126C  HIS*     1.3    57.9    +      -       +      +
    128C  MET*     3.3     8.7    +      -       +      +
    129C  GLN*     3.0    30.6    +      -       -      +
    164C  LYS*     4.3    14.6    -      -       -      +
    167C  LEU*     5.7     0.4    -      -       +      -
    171C  HIS*     4.7     2.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 126 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122C  TYR*     3.3    33.5    +      +       -      +
    123C  ASN*     3.2    10.0    +      -       -      +
    125C  PRO*     1.3    78.8    -      -       +      +
    127C  LEU*     1.3    60.4    +      -       -      +
    129C  GLN*     3.5     7.2    +      -       +      +
    130C  ASP*     3.0    39.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 127 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94C  THR*     3.7    32.3    -      -       +      +
     95C  LEU*     4.7    11.2    -      -       +      -
     98C  PHE*     3.6    40.8    -      -       +      -
    123C  ASN      3.2    11.2    +      -       -      +
    124C  ALA*     3.1    10.4    +      -       -      +
    126C  HIS*     1.3    75.4    -      -       -      +
    128C  MET*     1.3    72.8    +      -       +      +
    130C  ASP*     3.2     4.7    +      -       -      +
    131C  LEU*     2.8    54.5    +      -       +      +
    160C  LEU*     5.0     2.0    -      -       +      -
     48D  PHE*     4.6     7.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 128 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124C  ALA*     3.0    22.8    +      -       -      +
    125C  PRO*     3.6     8.7    -      -       +      +
    127C  LEU*     1.3   102.0    -      -       +      +
    129C  GLN*     1.3    58.2    +      -       -      +
    131C  LEU*     3.4     1.3    +      -       +      -
    132C  ASP*     3.0    31.2    +      -       -      +
    153C  TRP*     3.6    37.9    -      -       +      -
    160C  LEU*     4.3    15.7    -      -       +      -
    167C  LEU*     3.7    39.9    -      -       +      +
    168C  LEU*     3.8     3.8    -      -       +      -
    171C  HIS*     3.6    22.0    -      -       +      +
    174C  LEU*     3.4     7.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 129 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  PRO      3.0    16.8    +      -       -      +
    126C  HIS*     3.8     7.6    -      -       +      +
    128C  MET*     1.3    76.1    -      -       -      +
    130C  ASP*     1.3    58.9    +      -       -      +
    132C  ASP*     3.4     6.0    +      -       -      +
    133C  THR*     2.9    48.7    +      -       -      +
    171C  HIS*     3.2    26.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 130 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126C  HIS*     3.0    25.7    +      -       -      +
    127C  LEU*     3.7     4.9    -      -       -      +
    129C  GLN*     1.3    78.3    -      -       -      +
    131C  LEU*     1.3    57.5    +      -       -      +
    133C  THR*     3.3     6.4    +      -       -      -
    134C  TYR*     2.7    31.0    +      -       -      +
     46D  LEU      5.4     1.1    -      -       -      +
     47D  PRO      3.6    15.1    -      -       -      +
     48D  PHE*     3.4    46.8    -      -       +      +
     49D  GLY      4.4     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 131 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91C  ILE*     4.5    16.2    -      -       +      -
     94C  THR*     5.5     1.8    -      -       +      -
     95C  LEU*     4.2    17.9    -      -       +      -
    127C  LEU*     2.8    56.7    +      -       +      +
    128C  MET*     3.9     4.5    -      -       +      +
    130C  ASP*     1.3    72.1    -      -       -      +
    132C  ASP*     1.3    53.7    +      -       -      +
    134C  TYR*     3.5     4.1    -      -       +      +
    135C  LEU*     2.6    37.1    +      -       -      +
    141C  LEU*     4.5    22.1    -      -       +      +
    153C  TRP*     4.3    22.0    -      -       +      -
    174C  LEU*     4.1    15.5    -      -       +      -
     48D  PHE*     3.9    19.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 132 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128C  MET      3.0    17.8    +      -       -      +
    129C  GLN*     3.6     9.7    -      -       -      +
    131C  LEU*     1.3    72.0    -      -       -      +
    133C  THR*     1.3    57.9    +      -       -      +
    135C  LEU*     3.8     1.2    -      -       -      +
    136C  GLY      2.9    16.6    +      -       -      -
    170C  ASN      4.5     1.2    -      -       -      +
    171C  HIS*     2.8    37.5    +      -       +      +
    172C  PRO*     5.0     1.2    -      -       -      +
    173C  ARG*     2.6    71.4    +      -       -      +
    174C  LEU*     3.9    19.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 133 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  GLN*     2.9    33.8    +      -       -      -
    130C  ASP*     3.7     6.7    +      -       -      -
    132C  ASP*     1.3    76.0    -      -       -      +
    134C  TYR*     1.3    64.5    +      -       -      +
    136C  GLY*     3.1    13.3    +      -       -      -
    173C  ARG*     4.2     6.1    -      -       -      +
     47D  PRO      6.2     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 134 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87C  HIS*     4.3    17.5    +      +       -      +
     91C  ILE*     3.6    33.6    -      -       +      +
    130C  ASP      2.7    21.7    +      -       -      +
    131C  LEU*     3.5     4.7    -      -       +      +
    133C  THR*     1.3    77.3    -      -       -      +
    135C  LEU*     1.3    54.2    +      -       -      +
    138C  ARG*     2.5    58.9    +      -       -      -
    141C  LEU*     3.5    26.1    +      -       +      -
    142C  ILE*     4.2     8.0    -      -       -      +
     47D  PRO*     5.3     8.1    -      -       +      +
     48D  PHE*     3.6    26.7    -      +       +      -
     62D  HIS*     5.0     6.0    +      +       -      -
----------------------------------------------------------
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Residues in contact with LEU 135 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131C  LEU      2.6    21.0    +      -       -      +
    132C  ASP      3.8     4.3    -      -       -      +
    134C  TYR*     1.3    76.2    -      -       -      +
    136C  GLY*     1.3    74.3    +      -       -      +
    137C  GLY      3.3     0.2    +      -       -      -
    138C  ARG*     3.0    47.5    +      -       -      +
    139C  GLU      4.7     1.6    -      -       -      +
    140C  TRP*     4.0    28.9    -      -       -      +
    141C  LEU*     4.1    15.0    -      -       +      +
    173C  ARG*     3.5    34.3    -      -       +      +
    174C  LEU*     3.8    17.9    -      -       +      -
    177C  LEU*     4.1    15.9    -      -       +      -
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Residues in contact with GLY 136 (chain C). Click here for Legend to table.
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                                  Specific contacts
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     Residue       Dist    Surf   HB    Arom    Phob    DC
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    132C  ASP      2.9    17.0    +      -       -      -
    133C  THR      3.1    10.9    +      -       -      -
    134C  TYR      4.6     0.2    -      -       -      -
    135C  LEU*     1.3    83.2    -      -       -      +
    137C  GLY*     1.3    60.0    +      -       -      -
    138C  ARG      3.3     3.6    +      -       -      +
    173C  ARG*     3.5    35.4    +      -       -      +
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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
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  Atomic class           I  II  III   IV   V   VI  VII  VIII
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   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
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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