Contacts of the helix formed by residues 108 - 130 (chain G) in PDB entry 4HHM


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 ASP 108 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106G  ALA*     3.3     2.0    -      -       +      +
    107G  ASN*     1.3    75.6    -      -       -      +
    109G  ARG*     1.3    64.9    +      -       -      +
    110G  ASP*     3.8    15.5    -      -       -      +
    111G  VAL*     3.3    21.3    +      -       +      +
    112G  ARG*     3.4    16.3    +      -       -      +
    334H  ARG*     2.7    53.8    +      -       -      +
    337H  GLN*     3.5     9.8    +      -       -      +
    368H  ARG*     2.9    21.0    +      -       -      +
    370H  MET*     3.9    10.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 109 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107G  ASN      3.4     2.2    +      -       -      -
    108G  ASP*     1.3    68.5    -      -       -      +
    110G  ASP*     1.3    66.7    +      -       -      +
    112G  ARG*     3.0    37.0    +      -       -      +
    113G  ARG*     3.1    52.0    +      -       +      +
    337H  GLN*     2.8    22.6    -      -       +      +
    340H  GLU*     4.7    10.1    -      -       -      -
    341H  PRO      3.2    21.4    +      -       -      -
    342H  THR*     3.3    14.1    +      -       -      +
    343H  ALA*     4.6     2.0    -      -       -      +
    344H  ALA*     4.6     5.9    -      -       -      +
    345H  ASP*     3.8    12.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 110 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108G  ASP*     3.8     9.3    -      -       -      +
    109G  ARG*     1.3    78.8    -      -       -      +
    111G  VAL*     1.3    87.4    +      -       -      +
    113G  ARG*     3.4    11.2    +      -       -      +
    114G  TYR*     2.9    29.6    +      -       -      +
    337H  GLN*     4.6     1.7    -      -       -      +
    355H  THR      5.1     4.9    -      -       -      +
    356H  ALA*     5.3     1.9    -      -       -      -
    360H  PHE*     3.6    27.9    -      -       +      -
    368H  ARG*     3.7    19.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 111 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98G  VAL*     3.8    35.4    -      -       +      +
     99G  PHE*     3.9    13.8    -      -       +      -
    102G  GLY      3.8    10.5    -      -       -      +
    103G  ALA      4.6     0.2    -      -       -      +
    106G  ALA*     3.8    20.6    -      -       +      -
    108G  ASP*     3.5    21.8    -      -       +      +
    109G  ARG      3.1     0.6    -      -       -      -
    110G  ASP*     1.3    96.1    +      -       -      +
    112G  ARG*     1.3    55.8    +      -       -      +
    114G  TYR*     3.2     7.9    +      -       +      +
    115G  ALA*     2.8    28.1    +      -       -      +
    360H  PHE*     4.3     4.9    -      -       +      -
    365H  ALA*     4.6     6.1    -      -       +      +
    368H  ARG*     4.7     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 112 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103G  ALA      3.3    19.7    -      -       -      +
    104G  PHE*     3.1    25.5    -      -       -      +
    105G  THR*     4.2     1.8    -      -       -      +
    106G  ALA*     2.9    27.7    +      -       +      +
    107G  ASN      2.7    30.7    +      -       -      -
    108G  ASP      3.4     3.8    -      -       -      +
    109G  ARG*     3.0    32.9    +      -       -      +
    111G  VAL*     1.3    75.6    -      -       -      +
    113G  ARG*     1.3    63.0    +      -       -      +
    115G  ALA*     3.3     4.0    +      -       -      +
    116G  LEU*     3.2    26.2    +      -       +      +
    157G  ARG*     3.4    13.3    -      -       -      +
    337H  GLN      3.0    13.8    +      -       -      -
    338H  LEU*     4.0     2.6    -      -       -      +
    340H  GLU      2.7    29.9    +      -       -      -
    341H  PRO      4.1     1.2    +      -       -      -
    342H  THR*     2.9    30.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 113 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109G  ARG*     3.1    52.4    +      -       -      +
    110G  ASP*     3.7     9.6    -      -       -      +
    112G  ARG*     1.3    73.0    -      -       -      +
    114G  TYR*     1.3    67.5    +      -       -      +
    116G  LEU*     3.2     6.3    +      -       -      +
    117G  ARG*     3.1    26.3    +      -       -      +
    342H  THR*     3.0    37.3    +      -       +      +
    343H  ALA*     3.7     7.7    -      -       -      +
    345H  ASP*     3.7    22.4    +      -       -      -
    349H  ALA      4.4     0.2    +      -       -      -
    350H  LEU*     3.7    32.9    -      -       +      +
    353H  ASP*     2.7    42.5    +      -       -      +
    355H  THR*     4.9     1.6    +      -       -      -
    356H  ALA*     3.9    10.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 114 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61G  PHE*     3.4    30.9    -      +       -      -
     98G  VAL*     4.3    11.7    -      -       +      -
     99G  PHE*     3.5    34.5    -      +       -      -
    110G  ASP      2.9    18.1    +      -       -      +
    111G  VAL      3.4     3.8    -      -       -      +
    113G  ARG*     1.3    78.5    -      -       -      +
    115G  ALA*     1.3    56.1    +      -       -      +
    117G  ARG*     3.3     1.7    +      -       -      +
    118G  LYS*     2.9    39.5    +      -       +      +
    356H  ALA*     3.4    20.6    +      -       -      +
    357H  TYR*     4.0    29.1    -      +       -      -
    360H  PHE*     3.5    31.2    -      +       +      -
    362H  VAL*     3.9    20.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 115 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93G  LEU*     3.7    13.2    -      -       +      +
     99G  PHE*     3.5    21.1    -      -       +      -
    103G  ALA*     3.8    25.6    -      -       +      -
    104G  PHE*     3.9     6.5    -      -       +      -
    111G  VAL      2.8    15.7    +      -       -      +
    112G  ARG      3.5     7.2    -      -       -      +
    113G  ARG      3.2     0.4    -      -       -      -
    114G  TYR*     1.3    79.2    -      -       -      +
    116G  LEU*     1.3    59.3    +      -       -      +
    118G  LYS*     3.5     0.6    +      -       -      -
    119G  THR*     2.9    28.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 116 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104G  PHE*     3.7    21.8    -      -       +      -
    112G  ARG      3.2    12.9    +      -       -      +
    113G  ARG*     3.2     8.1    +      -       -      +
    115G  ALA*     1.3    73.2    -      -       -      +
    117G  ARG*     1.3    60.6    +      -       -      +
    119G  THR*     3.2     3.4    +      -       -      -
    120G  ILE*     2.8    38.7    +      -       +      +
    161G  ALA*     3.5    33.7    -      -       +      +
    164G  LEU*     3.6    31.9    -      -       +      -
    165G  LEU*     4.1    14.6    -      -       +      -
    342H  THR*     3.6    24.7    -      -       +      -
    350H  LEU*     3.8    17.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 117 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113G  ARG      3.1    13.8    +      -       -      +
    114G  TYR      3.7     5.8    -      -       -      +
    116G  LEU*     1.3    76.7    -      -       -      +
    118G  LYS*     1.3    63.0    +      -       -      +
    120G  ILE*     3.3     6.1    +      -       -      +
    121G  ARG*     2.9    25.6    +      -       -      +
    350H  LEU*     3.0    44.7    +      -       +      -
    351H  LEU*     3.2    38.9    +      -       -      +
    353H  ASP      3.0    22.4    +      -       -      -
    356H  ALA*     3.5    14.1    -      -       -      +
    357H  TYR*     3.8    27.3    -      -       +      +
    358H  GLU*     4.1    19.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 118 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55G  ASP*     2.8    30.7    +      -       -      +
     56G  ASP*     3.0    18.6    +      -       -      -
     61G  PHE*     3.6    30.1    -      -       -      -
     91G  THR*     4.1     2.7    -      -       +      +
     92G  ASN      2.8    24.9    +      -       -      +
     93G  LEU*     4.0    16.8    -      -       +      -
     96G  HIS*     6.4     0.2    -      -       -      -
     99G  PHE*     4.2    12.6    -      -       +      -
    114G  TYR*     2.9    31.7    +      -       +      +
    115G  ALA*     3.8     5.4    -      -       -      +
    117G  ARG*     1.3    77.3    -      -       -      +
    119G  THR*     1.3    63.7    -      -       -      +
    121G  ARG*     3.4     5.2    +      -       -      +
    122G  ASN*     3.4    17.0    +      -       -      +
    357H  TYR*     4.6    12.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 119 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91G  THR*     3.6    19.8    +      -       -      +
     93G  LEU*     3.4    22.6    -      -       +      +
    104G  PHE*     3.6     9.5    -      -       +      -
    115G  ALA      2.9    15.3    +      -       -      -
    116G  LEU      3.5     7.9    -      -       -      -
    117G  ARG      3.2     0.2    -      -       -      -
    118G  LYS*     1.3    74.6    -      -       -      +
    120G  ILE*     1.3    67.3    +      -       -      +
    122G  ASN*     3.0     6.4    +      -       -      +
    123G  ILE*     3.0    22.9    +      -       +      +
    134G  TYR*     3.8    14.5    +      -       +      -
    165G  LEU*     3.9    29.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 120 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116G  LEU*     2.8    33.4    +      -       +      +
    117G  ARG*     3.3     8.7    +      -       -      +
    119G  THR*     1.3    71.7    -      -       -      +
    121G  ARG*     1.3    64.9    +      -       -      +
    123G  ILE*     3.1    18.4    +      -       -      +
    124G  ASP*     3.3    14.8    +      -       -      +
    164G  LEU*     5.4     2.0    -      -       +      +
    165G  LEU*     3.8    20.9    -      -       +      -
    168G  TYR*     3.4    42.8    -      -       +      +
    347H  LEU*     4.1    26.9    -      -       +      -
    350H  LEU*     5.0     4.7    -      -       +      -
    351H  LEU*     4.2    17.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 121 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63G  ALA      5.4     5.3    +      -       -      -
     65G  ASP*     3.2    27.5    +      -       -      +
     68G  ARG*     3.4    58.4    +      -       -      +
    117G  ARG      2.9    15.8    +      -       -      +
    118G  LYS*     3.6     8.3    -      -       -      +
    119G  THR      3.2     0.2    -      -       -      -
    120G  ILE*     1.3    79.2    -      -       -      +
    122G  ASN*     1.3    61.4    +      -       -      +
    124G  ASP*     3.4    19.0    +      -       -      +
    125G  LEU      3.5     6.8    +      -       -      -
    357H  TYR*     3.0    36.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 122 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53G  PHE*     3.7    12.7    -      -       -      -
     55G  ASP*     3.2    34.1    -      -       +      +
     59G  ILE*     5.3     0.2    -      -       -      +
     68G  ARG*     4.9     3.2    +      -       -      +
     89G  ALA*     4.4     0.2    -      -       -      +
     90G  THR      2.8    30.5    +      -       -      +
     91G  THR*     4.3     1.6    -      -       -      +
    118G  LYS      3.4     7.5    +      -       -      +
    119G  THR      3.0     4.4    +      -       -      +
    121G  ARG*     1.3    74.6    -      -       -      +
    123G  ILE*     1.3    67.4    +      -       -      +
    124G  ASP      3.1     1.8    -      -       -      -
    125G  LEU*     3.0    25.1    +      -       -      +
    126G  ALA*     2.9    21.8    +      -       -      +
    134G  TYR*     3.0    21.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 123 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119G  THR*     3.0    20.5    +      -       +      +
    120G  ILE*     3.1    12.1    +      -       -      +
    122G  ASN*     1.3    75.7    -      -       -      +
    124G  ASP*     1.3    65.3    +      -       -      +
    126G  ALA*     3.0    13.0    +      -       -      +
    127G  VAL*     3.1    13.3    +      -       +      +
    134G  TYR*     3.8    26.2    -      -       +      -
    165G  LEU*     3.9    22.2    -      -       +      +
    168G  TYR*     4.5     8.5    -      -       +      -
    169G  VAL*     4.0    13.7    -      -       +      -
    174G  TYR*     3.9    25.6    -      -       +      -
    176G  ILE*     4.5     9.9    -      -       +      -
    178G  PHE*     3.7    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 124 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120G  ILE*     3.3    13.3    +      -       -      +
    121G  ARG*     3.6    12.9    -      -       -      +
    122G  ASN      3.1     0.8    -      -       -      -
    123G  ILE*     1.3    77.4    -      -       -      +
    125G  LEU*     1.3    62.0    +      -       -      +
    127G  VAL*     3.1     5.5    +      -       -      +
    128G  GLU*     3.1    21.2    +      -       -      +
    168G  TYR*     2.7    26.0    +      -       -      -
    174G  TYR*     2.5    37.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 125 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53G  PHE*     4.1    16.6    -      -       +      -
     58G  LEU*     4.3     4.3    -      -       +      -
     59G  ILE*     3.6    31.4    -      -       +      -
     68G  ARG*     4.0    22.0    -      -       -      +
     69G  GLU*     6.2     0.2    -      -       -      +
     72G  VAL*     4.3    18.2    -      -       +      -
    121G  ARG      3.5     2.2    +      -       -      -
    122G  ASN*     3.0    27.0    +      -       -      +
    124G  ASP*     1.3    78.6    -      -       -      +
    126G  ALA*     1.3    58.0    +      -       -      +
    128G  GLU*     3.6    21.5    +      -       -      +
    129G  LEU*     3.1    40.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 126 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53G  PHE*     5.3     1.1    -      -       -      -
     89G  ALA*     3.6    26.9    -      -       +      -
    122G  ASN      2.9    12.0    +      -       -      +
    123G  ILE      3.0    13.7    +      -       -      +
    125G  LEU*     1.3    77.1    -      -       -      +
    127G  VAL*     1.3    57.7    +      -       -      +
    129G  LEU*     3.4     3.3    +      -       -      -
    130G  GLY      3.0     7.3    +      -       -      -
    131G  ALA*     2.8    36.3    +      -       +      +
    134G  TYR*     3.9    11.7    -      -       +      -
    176G  ILE*     4.0    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 127 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123G  ILE*     3.1    12.9    +      -       +      +
    124G  ASP      3.1     6.7    +      -       -      +
    126G  ALA*     1.3    73.0    -      -       -      +
    128G  GLU*     1.3    65.4    +      -       -      +
    130G  GLY*     3.3    11.5    +      -       -      +
    131G  ALA      4.5     4.7    -      -       -      +
    174G  TYR*     3.4    59.2    -      -       +      +
    175G  ASP      5.6     1.8    -      -       -      +
    176G  ILE*     5.0     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 128 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69G  GLU*     4.0    19.8    -      -       -      +
     72G  VAL*     5.1     2.0    -      -       -      +
     76G  ARG*     3.3    35.6    +      -       -      +
    124G  ASP      3.1    12.9    +      -       -      +
    125G  LEU*     3.8    24.3    -      -       -      +
    126G  ALA      3.3     0.2    -      -       -      -
    127G  VAL*     1.3    80.4    -      -       -      +
    129G  LEU*     1.3    62.2    +      -       +      +
    130G  GLY      3.5     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 129 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53G  PHE*     3.5    36.3    -      -       +      -
     58G  LEU*     4.5     2.7    -      -       +      -
     72G  VAL*     5.6     5.8    -      -       +      +
     75G  PHE*     3.9    28.9    -      -       +      -
     76G  ARG*     4.0    26.0    -      -       +      +
     79G  LEU*     4.8    10.9    -      -       +      +
     86G  VAL*     4.4    26.2    +      -       +      +
    125G  LEU*     3.1    32.7    +      -       +      +
    126G  ALA*     3.4     5.1    +      -       -      +
    128G  GLU*     1.3    76.3    -      -       -      +
    130G  GLY*     1.3    59.6    +      -       -      +
    131G  ALA      3.5     0.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 130 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86G  VAL      4.0     4.8    -      -       -      +
     87G  PRO*     5.3     1.0    -      -       -      +
    126G  ALA      3.0     3.8    +      -       -      -
    127G  VAL      3.3     8.4    +      -       -      -
    128G  GLU      3.2     4.6    -      -       -      -
    129G  LEU*     1.3    79.8    -      -       -      +
    131G  ALA*     1.3    64.4    +      -       -      +
    132G  LYS*     3.1    30.1    +      -       -      +
----------------------------------------------------------
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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