Contacts of the helix formed by residues 109 - 134 (chain C) in PDB entry 1FZB


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 TYR 109 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169B  ARG*     2.9    39.0    +      -       -      -
    173B  GLU*     2.8    24.2    +      -       -      -
    176B  ARG*     5.7     0.3    +      -       -      -
    105C  SER*     3.4    31.1    -      -       -      +
    106C  SER*     4.3     4.7    -      -       -      +
    107C  ILE      3.7     0.6    -      -       -      +
    108C  ARG*     1.3    80.6    -      -       -      +
    110C  LEU*     1.3    71.5    +      -       +      +
    111C  GLN      3.2     3.9    +      -       -      -
    112C  GLU*     3.3    43.2    +      -       -      +
    113C  ILE*     3.8    13.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 110 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  LEU*     4.1    14.3    -      -       +      +
    165B  LEU*     4.1     8.5    -      -       +      +
    168B  LEU*     3.4    28.8    -      -       +      +
    169B  ARG*     3.5    48.9    -      -       +      +
    172B  LEU*     3.3    31.9    -      -       +      +
    106C  SER*     3.3    30.3    -      -       -      +
    107C  ILE*     3.4     8.2    +      -       -      +
    108C  ARG      3.3     0.8    -      -       -      -
    109C  TYR*     1.3    89.1    -      -       +      +
    111C  GLN*     1.3    57.5    +      -       -      +
    112C  GLU      3.6     0.2    -      -       -      -
    113C  ILE*     4.1    14.1    -      -       +      +
    114C  TYR*     4.4     2.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 111 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  LEU*     3.9    23.2    -      -       +      +
    107C  ILE*     3.5    17.3    -      -       -      +
    108C  ARG*     3.9     7.4    -      -       -      +
    109C  TYR      3.2     0.6    -      -       -      -
    110C  LEU*     1.3    77.9    -      -       -      +
    112C  GLU*     1.3    63.9    +      -       -      +
    113C  ILE      3.3     1.6    -      -       -      +
    114C  TYR*     3.9    12.1    -      -       +      +
    115C  ASN*     3.1    46.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 112 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108C  ARG*     3.1    20.5    -      -       -      +
    109C  TYR*     3.3    45.3    +      -       -      +
    111C  GLN*     1.3    79.3    -      -       -      +
    113C  ILE*     1.3    59.6    +      -       +      +
    115C  ASN*     3.6     3.6    +      -       -      +
    116C  SER*     3.0    30.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 113 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    172B  LEU*     2.7    46.7    -      -       +      +
    173B  GLU*     3.3    41.3    -      -       +      +
    176B  ARG*     3.5    20.9    -      -       +      +
    109C  TYR*     3.8    16.4    +      -       +      +
    110C  LEU*     4.1    13.2    -      -       +      -
    111C  GLN      3.3     0.4    -      -       -      +
    112C  GLU*     1.3    77.9    -      -       +      +
    114C  TYR*     1.3    57.3    +      -       -      +
    116C  SER*     2.9     6.2    +      -       -      +
    117C  ASN*     2.6    52.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 114 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  LEU*     5.5     7.0    -      -       +      -
    139A  ASN*     2.9    60.2    +      -       +      +
    140A  VAL*     4.0    18.2    -      -       +      -
    142A  ALA*     5.7     0.7    -      -       -      +
    143A  GLN*     3.8    24.0    +      -       +      +
    172B  LEU*     3.8    20.1    -      -       +      +
    110C  LEU      4.4     1.6    -      -       -      +
    111C  GLN*     3.9    15.6    -      -       +      -
    112C  GLU      3.5     0.2    -      -       -      -
    113C  ILE*     1.3    79.2    -      -       -      +
    115C  ASN*     1.3    72.2    +      -       -      +
    118C  ASN*     2.9    47.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 115 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111C  GLN*     3.1    34.6    +      -       -      +
    112C  GLU*     4.0     3.8    -      -       -      +
    113C  ILE      3.2     0.4    -      -       -      -
    114C  TYR*     1.3    94.2    -      -       -      +
    116C  SER*     1.3    61.4    +      -       -      +
    118C  ASN*     4.1     3.9    -      -       -      +
    119C  GLN*     3.5    21.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 116 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  ARG*     5.0     3.5    -      -       -      +
    112C  GLU      3.0    16.8    +      -       -      -
    113C  ILE*     2.9    15.9    +      -       -      +
    115C  ASN*     1.3    75.0    -      -       -      +
    117C  ASN*     1.3    80.9    +      -       -      +
    118C  ASN      3.2     1.1    -      -       -      -
    119C  GLN*     3.1     7.3    +      -       -      +
    120C  LYS*     2.9    30.7    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    143A  GLN*     3.3    16.9    -      -       -      +
    172B  LEU*     3.2     8.0    -      -       -      +
    175B  LEU*     3.1     9.9    -      -       +      +
    176B  ARG*     2.7    62.6    +      -       -      +
    179B  ILE*     3.5    17.4    -      -       +      +
    113C  ILE*     2.6    27.8    +      -       +      +
    116C  SER*     1.3    78.8    +      -       -      +
    118C  ASN*     1.3    64.5    -      -       -      +
    120C  LYS*     3.0    17.5    +      -       -      +
    121C  ILE*     3.2    12.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 118 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  GLN*     3.3    23.2    +      -       -      +
    114C  TYR*     2.9    39.0    +      -       +      +
    115C  ASN*     4.1     6.1    -      -       -      +
    117C  ASN*     1.3    81.4    -      -       -      +
    119C  GLN*     1.3    64.9    +      -       -      +
    121C  ILE*     3.2     9.7    +      -       -      +
    122C  VAL*     3.1    31.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 119 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115C  ASN      3.5    14.1    +      -       -      +
    116C  SER*     3.1    11.1    +      -       -      +
    118C  ASN*     1.3    79.4    -      -       -      +
    120C  LYS*     1.3    63.0    +      -       +      +
    122C  VAL*     3.1    36.3    +      -       -      +
    123C  ASN*     3.2    13.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 120 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  ARG*     4.2    13.5    +      -       -      +
    179B  ILE*     3.5    34.7    -      -       +      +
    180B  GLN*     4.1    12.0    +      -       -      +
    183B  GLU*     3.3    29.1    +      -       -      +
    116C  SER*     2.9    28.2    +      -       -      +
    117C  ASN*     3.0    11.4    +      -       -      +
    119C  GLN*     1.3    74.8    -      -       -      +
    121C  ILE*     1.3    52.2    +      -       -      +
    123C  ASN*     3.1     7.7    +      -       -      +
    124C  LEU*     2.6    36.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 121 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143A  GLN*     6.1     2.7    -      -       -      +
    146A  ASP*     4.7    10.1    -      -       +      +
    147A  MET*     3.2    35.0    -      -       +      -
    150A  LEU*     3.6    17.0    -      -       +      -
    179B  ILE*     3.2    40.6    -      -       +      -
    117C  ASN*     3.2     6.8    +      -       +      +
    118C  ASN*     3.2    13.4    +      -       -      +
    120C  LYS*     1.3    76.5    -      -       -      +
    122C  VAL*     1.3    62.3    +      -       +      +
    124C  LEU*     3.6     7.0    -      -       +      -
    125C  LYS*     2.6    62.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 122 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118C  ASN*     3.1    31.9    +      -       -      +
    119C  GLN*     3.2    27.8    -      -       -      +
    121C  ILE*     1.3    79.0    -      -       +      +
    123C  ASN*     1.3    60.7    +      -       +      +
    125C  LYS*     3.5    17.5    -      -       +      +
    126C  GLU*     3.4    28.0    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    119C  GLN*     3.2     8.2    +      -       +      +
    120C  LYS*     3.1     8.8    +      -       -      +
    121C  ILE      3.1     0.2    -      -       -      -
    122C  VAL*     1.3    78.2    -      -       +      +
    124C  LEU*     1.3    55.4    +      -       -      +
    125C  LYS      3.1     0.2    -      -       -      -
    126C  GLU*     2.8    26.0    +      -       -      +
    127C  LYS*     2.7    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 124 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150A  LEU*     4.2    20.6    -      -       +      -
    154A  ILE*     4.4     1.8    -      -       +      -
    179B  ILE*     4.1    20.9    -      -       +      -
    182B  LEU*     4.0    30.1    -      -       +      +
    183B  GLU*     4.0    30.5    -      -       +      +
    186B  VAL*     4.5     1.1    -      -       +      -
    120C  LYS      2.6    21.4    +      -       -      +
    121C  ILE*     2.8    11.9    +      -       +      +
    123C  ASN*     1.3    74.2    -      -       -      +
    125C  LYS*     1.3    62.9    +      -       -      +
    127C  LYS*     2.9    27.9    +      -       +      +
    128C  VAL*     2.9    31.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 125 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146A  ASP*     3.5    22.4    +      -       -      -
    150A  LEU*     4.7    18.0    -      -       +      +
    121C  ILE*     2.6    39.9    +      -       +      +
    122C  VAL*     3.5    19.7    -      -       +      +
    124C  LEU*     1.3    70.6    -      -       -      +
    126C  GLU*     1.3    63.9    +      -       +      +
    128C  VAL*     3.2    14.1    -      -       -      +
    129C  ALA*     3.1    22.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 126 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122C  VAL*     3.4    20.2    +      -       -      +
    123C  ASN*     2.8    37.9    +      -       -      +
    125C  LYS*     1.3    81.8    -      -       +      +
    127C  LYS*     1.3    59.8    +      -       -      +
    129C  ALA*     3.1    19.8    -      -       -      +
    130C  GLN*     3.2    16.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 127 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183B  GLU*     2.7    32.7    +      -       +      +
    186B  VAL*     3.4    18.9    -      -       +      +
    187B  SER*     2.6    44.1    +      -       -      +
    190B  MET*     4.5     6.8    -      -       -      +
    123C  ASN*     2.7    18.4    +      -       -      +
    124C  LEU*     2.9    20.4    +      -       +      +
    126C  GLU*     1.3    72.7    -      -       -      +
    128C  VAL*     1.3    58.2    +      -       -      +
    130C  GLN*     2.9    38.7    +      -       -      +
    131C  LEU*     3.1     9.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 128 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150A  LEU*     5.0     4.3    -      -       +      -
    153A  ASP*     4.6    15.0    -      -       -      +
    154A  ILE*     3.8    28.7    -      -       +      -
    157A  LYS*     4.6    12.3    -      -       +      +
    186B  VAL*     3.7    26.9    -      -       +      -
    124C  LEU*     2.9    17.2    +      -       +      +
    125C  LYS*     3.2    18.2    -      -       -      +
    127C  LYS*     1.3    74.8    -      -       -      +
    129C  ALA*     1.3    60.4    +      -       -      +
    130C  GLN      3.3     0.2    -      -       -      -
    131C  LEU*     3.3    16.0    +      -       +      +
    132C  GLU*     2.8    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 129 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125C  LYS      3.1    14.3    +      -       -      +
    126C  GLU*     3.1    18.6    -      -       -      +
    127C  LYS      3.0     0.4    -      -       -      -
    128C  VAL*     1.3    79.2    -      -       -      +
    130C  GLN*     1.3    63.2    +      -       +      +
    132C  GLU*     3.4    12.6    +      -       -      +
    133C  ALA*     3.2    19.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 130 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190B  MET*     3.7    30.2    -      -       +      +
    126C  GLU*     3.4    16.7    -      -       -      +
    127C  LYS*     2.9    17.8    +      -       -      +
    129C  ALA*     1.3    74.2    -      -       +      +
    131C  LEU*     1.3    65.8    -      -       -      +
    133C  ALA*     3.1    10.6    -      -       -      +
    134C  GLN*     3.0    26.2    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    154A  ILE*     5.9     0.7    -      -       +      -
    157A  LYS*     4.5    12.6    -      -       +      +
    158A  ILE*     3.7    30.3    -      -       +      -
    161A  CYS*     3.6    17.5    -      -       -      -
    186B  VAL*     4.4    17.9    -      -       +      -
    189B  GLN*     3.4    33.7    -      -       +      -
    190B  MET*     4.0    22.4    -      -       +      +
    193B  CYS*     4.2     4.3    -      -       -      -
    127C  LYS      3.1     6.3    +      -       -      +
    128C  VAL*     3.3    20.4    -      -       +      +
    130C  GLN*     1.3    74.8    -      -       -      +
    132C  GLU*     1.3    66.8    +      -       -      +
    134C  GLN*     2.9    14.9    +      -       +      +
    135C  CYS*     3.1    17.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 132 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157A  LYS*     3.6    33.6    -      -       +      -
    160A  SER*     5.6     2.7    -      -       -      +
    261B  ASP*     2.7    15.0    -      -       +      +
    263B  GLY      4.2     2.4    -      -       -      +
    398B  ASP*     2.7    27.7    -      -       -      +
    428B  LYS*     5.6     0.7    +      -       -      -
    128C  VAL      2.8    16.2    +      -       -      +
    129C  ALA*     3.6    12.2    -      -       -      +
    130C  GLN      3.3     0.2    -      -       -      -
    131C  LEU*     1.3    76.0    -      -       -      +
    133C  ALA*     1.3    64.5    +      -       -      +
    135C  CYS*     3.0    27.1    -      -       -      +
    136C  GLN*     3.1    18.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 133 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129C  ALA      3.2    10.2    +      -       -      +
    130C  GLN*     3.1    13.8    +      -       -      +
    132C  GLU*     1.3    81.5    -      -       -      +
    134C  GLN*     1.3    67.9    +      -       -      +
    135C  CYS      3.0     1.4    +      -       -      -
    136C  GLN*     3.4    20.1    +      -       -      +
    137C  GLU*     5.7     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 134 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164A  SER*     4.4     4.5    -      -       -      -
    165A  CYS*     4.8     3.6    -      -       -      -
    190B  MET*     3.3    22.4    -      -       +      +
    193B  CYS*     3.6    39.1    +      -       +      +
    130C  GLN*     3.0    21.7    +      -       -      +
    131C  LEU*     2.9    14.5    +      -       +      +
    133C  ALA*     1.3    77.6    -      -       -      +
    135C  CYS*     1.3    58.2    +      -       -      +
    136C  GLN      3.6     2.6    +      -       -      -
    137C  GLU*     4.6     9.2    +      -       -      +
----------------------------------------------------------
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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