Contacts of the helix formed by residues 98 - 124 (chain Y) in PDB entry 6QXT


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 98 (chain Y).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96Y  ALA      3.3     5.3    +      -       -      +
     97Y  TRP*     1.3    77.1    -      -       -      +
     99Y  GLU*     1.3    63.8    +      -       -      +
    100Y  ASN*     3.3     9.4    -      -       +      +
    101Y  VAL*     3.5    16.5    +      -       +      +
    102Y  LYS*     3.1    23.0    +      -       -      +
    277Y  LEU      5.9     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 99 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97Y  TRP      3.9     0.6    +      -       -      -
     98Y  LYS*     1.3    71.3    -      -       -      +
    100Y  ASN*     1.3    60.9    +      -       -      +
    102Y  LYS*     3.8     6.3    -      -       -      +
    103Y  CYS*     2.9    30.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 100 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98Y  LYS*     3.3     5.9    -      -       +      +
     99Y  GLU*     1.3    79.5    -      -       -      +
    101Y  VAL*     1.3    55.9    +      -       -      +
    103Y  CYS*     3.4     5.5    +      -       -      +
    104Y  GLU*     2.9    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 101 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97Y  TRP*     6.1     1.6    -      -       +      -
     98Y  LYS*     3.5    19.1    +      -       +      +
     99Y  GLU      3.4     0.2    -      -       -      -
    100Y  ASN*     1.3    75.8    -      -       -      +
    102Y  LYS*     1.3    61.1    +      -       -      +
    104Y  GLU*     3.3     4.9    +      -       -      +
    105Y  VAL*     2.9    31.5    +      -       -      +
    277Y  LEU*     5.1    12.8    -      -       +      +
    280Y  LEU*     4.8    20.6    -      -       +      -
    281Y  GLY*     5.2     5.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 102 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97Y  TRP*     5.7     5.1    -      -       +      +
     98Y  LYS      3.1    17.2    +      -       -      +
     99Y  GLU*     3.8     7.6    -      -       -      +
    101Y  VAL*     1.3    78.5    -      -       -      +
    103Y  CYS*     1.3    56.4    +      -       -      +
    105Y  VAL*     3.9     4.2    -      -       -      +
    106Y  TRP*     2.9    31.6    +      -       -      +
    203Y  LEU*     4.2    25.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 103 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99Y  GLU      2.9    19.1    +      -       -      +
    100Y  ASN*     3.9     5.6    -      -       -      +
    102Y  LYS*     1.3    73.1    -      -       -      +
    104Y  GLU*     1.3    61.1    +      -       -      +
    106Y  TRP*     3.9     4.8    -      -       -      +
    107Y  THR*     2.9    31.7    +      -       -      -
    142Y  ARG*     5.4    13.6    -      -       +      +
    143Y  PHE      5.7     3.8    -      -       -      +
    203Y  LEU      5.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 104 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100Y  ASN      2.9    18.6    +      -       -      +
    101Y  VAL*     3.7     7.0    -      -       -      +
    103Y  CYS*     1.3    75.6    -      -       -      +
    105Y  VAL*     1.3    60.0    +      -       -      +
    107Y  THR*     3.4     5.0    +      -       -      -
    108Y  ALA*     2.9    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 105 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101Y  VAL      2.9    17.2    +      -       -      +
    102Y  LYS*     4.1     4.0    -      -       -      +
    104Y  GLU*     1.3    76.9    -      -       -      +
    106Y  TRP*     1.3    57.4    +      -       -      +
    108Y  ALA*     3.4     6.8    +      -       -      +
    109Y  ILE*     2.9    29.6    +      -       -      +
    203Y  LEU*     5.9     3.6    -      -       +      -
    277Y  LEU*     6.5     0.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 106 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102Y  LYS      2.9    20.6    +      -       -      +
    103Y  CYS*     3.9     5.6    -      -       -      +
    105Y  VAL*     1.3    77.7    -      -       -      +
    107Y  THR*     1.3    57.0    +      -       -      +
    109Y  ILE*     3.2     7.1    +      -       -      +
    110Y  ILE*     2.9    30.1    +      -       -      +
    203Y  LEU*     4.4    24.4    -      -       +      +
    204Y  LYS*     5.2     2.9    -      -       -      +
    217Y  ASP*     6.5     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 107 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103Y  CYS      2.9    20.0    +      -       -      -
    104Y  GLU*     3.8     4.3    -      -       -      -
    106Y  TRP*     1.3    75.3    -      -       -      +
    108Y  ALA*     1.3    59.1    +      -       -      +
    110Y  ILE*     3.5     6.0    +      -       -      +
    111Y  ALA*     2.9    29.6    +      -       -      +
    140Y  LEU*     5.9     2.4    -      -       -      +
    141Y  GLU      5.3     5.2    -      -       -      -
    142Y  ARG*     5.3    14.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 108 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104Y  GLU      2.9    17.6    +      -       -      +
    105Y  VAL*     3.7     7.2    -      -       -      +
    107Y  THR*     1.3    77.1    -      -       -      +
    109Y  ILE*     1.3    58.2    +      -       -      +
    111Y  ALA*     3.4     6.9    +      -       -      +
    112Y  GLN*     2.9    28.8    +      -       -      +
    284Y  ILE*     4.7    18.8    -      -       +      -
    285Y  PRO      6.2     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 109 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105Y  VAL      2.9    17.6    +      -       -      +
    106Y  TRP*     3.6     7.2    -      -       -      +
    108Y  ALA*     1.3    75.7    -      -       -      +
    110Y  ILE*     1.3    59.7    +      -       -      +
    112Y  GLN*     3.1     6.8    +      -       -      +
    113Y  LYS*     2.9    29.9    +      -       -      +
    217Y  ASP*     4.1    20.2    -      -       +      +
    218Y  ILE*     5.8     1.6    -      -       -      +
    220Y  GLU*     5.0     6.2    -      -       +      +
    221Y  PRO*     4.6     7.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 110 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106Y  TRP      2.9    16.5    +      -       -      +
    107Y  THR*     3.9     6.3    -      -       -      +
    109Y  ILE*     1.3    75.7    -      -       -      +
    111Y  ALA*     1.3    58.2    +      -       -      +
    113Y  LYS*     3.8     6.0    -      -       -      +
    114Y  ILE*     2.9    31.9    +      -       -      +
    149Y  GLU*     5.2    15.1    -      -       +      +
    220Y  GLU*     6.0     1.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 111 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107Y  THR      2.9    18.1    +      -       -      +
    108Y  ALA*     3.6     7.6    -      -       -      +
    110Y  ILE*     1.3    77.7    -      -       -      +
    112Y  GLN*     1.3    56.1    +      -       -      +
    114Y  ILE*     3.9     4.5    -      -       -      +
    115Y  LEU*     2.9    31.4    +      -       -      +
    137Y  TYR*     5.0    14.5    -      -       +      +
    140Y  LEU*     5.6     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 112 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108Y  ALA      2.9    17.0    +      -       -      +
    109Y  ILE*     3.6     6.3    -      -       -      +
    111Y  ALA*     1.3    77.0    -      -       -      +
    113Y  LYS*     1.3    57.3    +      -       -      +
    115Y  LEU*     3.5     5.9    +      -       -      +
    116Y  ASN*     2.9    30.2    +      -       -      +
    221Y  PRO*     4.0    18.6    -      -       +      -
    286Y  GLU*     5.7     3.8    -      -       +      -
    287Y  PHE      4.4    20.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 113 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109Y  ILE      2.9    16.3    +      -       -      +
    110Y  ILE*     3.3     6.0    +      -       -      +
    112Y  GLN*     1.3    77.2    -      -       -      +
    114Y  ILE*     1.3    57.8    +      -       -      +
    116Y  ASN*     3.2     6.7    +      -       -      +
    117Y  GLN*     2.9    28.5    +      -       -      +
    220Y  GLU*     3.6    31.9    -      -       +      +
    221Y  PRO*     4.1     7.3    -      -       -      +
    224Y  PRO*     5.4     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 114 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110Y  ILE      2.9    17.4    +      -       -      +
    111Y  ALA*     4.1     2.7    -      -       -      +
    113Y  LYS*     1.3    76.2    -      -       -      +
    115Y  LEU*     1.3    58.7    +      -       -      +
    117Y  GLN*     3.2     8.0    +      -       -      +
    118Y  SER*     2.9    30.1    +      -       -      -
    133Y  ILE*     4.8     8.4    -      -       -      +
    136Y  LEU*     5.8     0.7    -      -       +      -
    137Y  TYR*     4.3    21.8    -      -       +      +
    149Y  GLU*     6.0     5.4    -      -       +      -
    152Y  SER*     5.1    15.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 115 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111Y  ALA      2.9    20.1    +      -       -      +
    112Y  GLN*     3.8     6.3    -      -       -      +
    114Y  ILE*     1.3    76.8    -      -       -      +
    116Y  ASN*     1.3    56.9    +      -       -      +
    118Y  SER*     3.5     5.6    +      -       -      -
    119Y  TYR*     2.9    30.0    +      -       -      +
    137Y  TYR*     4.7    10.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 116 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112Y  GLN      2.9    18.4    +      -       -      +
    113Y  LYS*     3.6     4.7    -      -       -      +
    115Y  LEU*     1.3    74.1    -      -       -      +
    117Y  GLN*     1.3    60.3    +      -       -      +
    119Y  TYR*     3.8     5.8    -      -       -      +
    120Y  TYR*     2.9    29.8    +      -       -      +
    221Y  PRO      4.2    16.4    -      -       -      +
    224Y  PRO*     4.5    13.8    -      -       +      +
    287Y  PHE      5.4     4.0    -      -       -      +
    288Y  ARG*     5.6     1.3    -      -       -      +
    289Y  ILE*     4.9    23.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 117 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113Y  LYS      2.9    13.8    +      -       -      +
    114Y  ILE*     3.5    10.5    -      -       -      +
    116Y  ASN*     1.3    75.2    -      -       -      +
    118Y  SER*     1.3    60.7    +      -       -      +
    120Y  TYR*     3.3     5.5    +      -       -      +
    121Y  LEU*     2.9    28.1    +      -       -      +
    133Y  ILE*     5.2     5.4    -      -       +      -
    152Y  SER*     6.2     2.9    -      -       -      -
    156Y  TYR*     4.6    22.0    -      -       +      +
    224Y  PRO*     4.6    10.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 118 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114Y  ILE      2.9    16.0    +      -       -      -
    115Y  LEU*     3.9     5.2    -      -       -      -
    117Y  GLN*     1.3    75.8    -      -       -      +
    119Y  TYR*     1.3    58.1    +      -       -      +
    121Y  LEU*     3.3     1.2    +      -       -      -
    122Y  GLY*     2.9    23.2    +      -       -      -
    130Y  SER*     3.2    36.9    -      -       -      +
    133Y  ILE*     3.8    17.6    -      -       -      +
    134Y  MET*     3.8    14.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 119 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115Y  LEU      2.9    19.0    +      -       -      +
    116Y  ASN*     3.9     6.5    -      -       -      +
    118Y  SER*     1.3    77.3    -      -       -      +
    120Y  TYR*     1.3    56.8    +      -       -      +
    122Y  GLY*     3.1     3.4    +      -       -      +
    123Y  GLU*     2.9    27.3    +      -       -      +
    289Y  ILE*     5.7     8.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 120 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116Y  ASN      2.9    19.4    +      -       -      +
    117Y  GLN*     3.7     5.8    -      -       -      +
    118Y  SER      3.3     0.2    -      -       -      -
    119Y  TYR*     1.3    76.9    -      -       -      +
    121Y  LEU*     1.3    58.5    +      -       -      +
    123Y  GLU*     3.2     9.5    +      -       -      +
    124Y  CYS*     2.9    26.9    +      -       -      +
    224Y  PRO*     5.0    11.4    -      -       +      +
    228Y  ARG*     6.1     4.7    -      -       +      -
    289Y  ILE*     5.9     5.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 121 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117Y  GLN      2.9    17.5    +      -       -      +
    118Y  SER*     3.3     5.8    +      -       -      +
    120Y  TYR*     1.3    75.9    -      -       -      +
    122Y  GLY*     1.3    58.0    +      -       -      +
    124Y  CYS*     3.3     8.5    +      -       -      +
    125Y  SER      3.1     7.1    +      -       -      -
    126Y  PHE*     3.0    35.2    +      -       +      +
    129Y  LYS*     4.8     4.9    -      -       +      -
    130Y  SER*     3.6    20.9    -      -       -      +
    133Y  ILE*     6.2     0.4    -      -       +      -
    156Y  TYR*     6.5     0.7    -      -       -      -
    159Y  THR*     5.5     7.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 122 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118Y  SER      2.9    14.6    +      -       -      -
    119Y  TYR*     3.1     5.3    +      -       -      -
    121Y  LEU*     1.3    74.0    -      -       -      +
    123Y  GLU*     1.3    59.4    +      -       -      +
    125Y  SER*     3.1    17.4    +      -       -      -
    126Y  PHE      4.4     3.8    -      -       -      -
    127Y  PHE*     6.0     0.4    -      -       -      -
    130Y  SER*     3.7     8.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 123 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119Y  TYR      2.9    12.9    +      -       -      +
    120Y  TYR*     3.2    12.3    +      -       -      +
    122Y  GLY*     1.3    76.7    -      -       -      +
    124Y  CYS*     1.3    58.4    +      -       -      +
    125Y  SER*     3.2     3.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 124 (chain Y). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120Y  TYR      2.9    15.5    +      -       -      +
    121Y  LEU*     3.7     9.4    -      -       -      +
    122Y  GLY      3.2     0.6    -      -       -      -
    123Y  GLU*     1.3    74.9    -      -       -      +
    125Y  SER*     1.3    69.0    +      -       -      +
    126Y  PHE*     3.4     4.1    +      -       +      +
----------------------------------------------------------
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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