Contacts of the helix formed by residues 111 - 133 (chain A) in PDB entry 4ZDR


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 GLN 111 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  ALA      4.5     0.3    -      -       -      -
    110A  SER*     1.3    84.0    +      -       -      +
    112A  ALA*     1.3    88.2    +      -       +      +
    113A  GLU*     3.2    19.1    -      -       +      +
    114A  SER*     3.0    23.8    +      -       -      +
    115A  LYS*     3.4     5.1    +      -       -      +
    159A  GLU*     6.0     2.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  SER      4.0     0.8    +      -       -      -
    111A  GLN*     1.3    84.0    +      -       +      +
    113A  GLU*     1.3    59.3    +      -       -      +
    115A  LYS*     3.1    10.7    +      -       -      +
    116A  VAL*     2.8    35.9    +      -       +      +
    155A  ILE*     3.8    22.9    -      -       +      -
    159A  GLU*     4.2    24.2    -      -       +      +
    160A  MET*     5.1     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ASN*     3.6    23.4    +      -       -      +
     41A  ARG*     3.8    12.3    +      -       -      +
    111A  GLN*     3.2    15.4    -      -       +      +
    112A  ALA*     1.3    78.0    -      -       -      +
    114A  SER*     1.3    60.2    +      -       -      +
    116A  VAL*     3.6     3.1    +      -       -      +
    117A  PHE*     3.0    24.4    +      -       -      +
    160A  MET*     4.0    22.7    -      -       +      +
    164A  HIS*     3.2    27.1    +      -       -      +
    166A  ILE*     3.7    19.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  GLU*     4.4     9.3    +      -       -      -
     38A  ASN*     4.9     4.0    +      -       -      -
     41A  ARG*     4.5    12.0    +      -       -      +
    109A  ALA*     4.3    14.1    -      -       -      -
    110A  SER      4.7     2.7    -      -       -      -
    111A  GLN*     3.0    15.2    +      -       -      +
    113A  GLU*     1.3    79.2    +      -       -      +
    115A  LYS*     1.3    66.4    +      -       -      +
    117A  PHE*     3.0    10.3    +      -       -      +
    118A  TYR*     2.9    39.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  ILE*     5.7     6.0    -      -       +      +
    109A  ALA*     3.8    20.0    -      -       +      +
    111A  GLN      3.4     3.4    +      -       -      +
    112A  ALA*     3.1    15.5    +      -       -      +
    114A  SER*     1.3    76.1    -      -       -      +
    116A  VAL*     1.3    59.0    +      -       -      +
    118A  TYR*     3.1     5.0    +      -       -      +
    119A  LEU*     2.8    39.5    +      -       +      +
    155A  ILE*     4.6    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112A  ALA      2.8    24.3    +      -       -      +
    113A  GLU      3.6     5.6    -      -       -      +
    115A  LYS*     1.3    72.2    -      -       -      +
    117A  PHE*     1.3    63.7    +      -       -      +
    119A  LEU*     3.9     6.7    -      -       -      +
    120A  LYS*     3.0    23.2    +      -       -      +
    152A  ALA*     3.9    10.4    -      -       +      +
    155A  ILE*     3.7    30.7    -      -       +      -
    156A  SER*     3.8    27.4    -      -       -      +
    160A  MET*     3.9    12.8    -      -       -      -
    166A  ILE*     3.7    18.6    -      -       +      +
    170A  LEU*     4.3    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  ARG*     3.3    56.5    -      -       +      +
     42A  ASN*     4.0     6.7    -      -       -      -
     45A  SER*     4.1     4.3    -      -       -      -
    113A  GLU      3.0    14.3    +      -       -      +
    114A  SER*     3.0    14.5    +      -       -      +
    116A  VAL*     1.3    79.2    -      -       -      +
    118A  TYR*     1.3    66.1    +      +       +      +
    120A  LYS*     3.3     7.1    +      -       -      +
    121A  MET*     3.1    47.5    +      -       +      +
    166A  ILE*     3.7    23.1    -      -       +      +
    243A  PRO*     3.8    22.7    -      -       +      -
    244A  TYR*     3.7    24.5    -      +       -      -
----------------------------------------------------------
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Residues in contact with TYR 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35A  GLU*     5.9     4.5    -      -       +      +
     36A  LEU*     4.1    18.0    +      -       -      +
     41A  ARG*     3.2    41.3    -      -       +      +
     44A  LEU*     5.0     3.6    -      -       +      -
    101A  LEU*     3.8    15.1    -      -       +      +
    105A  LEU*     3.7    54.5    -      -       +      +
    106A  ILE*     3.7    23.0    -      -       +      +
    109A  ALA*     4.7     4.0    -      -       +      -
    114A  SER*     2.9    40.5    +      -       -      +
    115A  LYS      4.1     2.2    -      -       -      +
    117A  PHE*     1.3    81.6    -      +       -      +
    119A  LEU*     1.3    60.4    +      -       -      +
    121A  MET*     3.2    12.6    +      -       +      +
    122A  LYS*     2.9    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  ILE*     3.8    29.6    -      -       +      -
    115A  LYS*     2.8    24.4    +      -       +      +
    116A  VAL      3.9     0.2    -      -       -      +
    118A  TYR*     1.3    74.3    -      -       -      +
    120A  LYS*     1.3    64.1    +      -       -      +
    122A  LYS*     3.1    17.3    +      -       +      +
    123A  GLY*     2.9    19.8    +      -       -      -
    148A  ALA*     3.7    14.6    -      -       -      +
    151A  GLU*     3.8    33.4    -      -       +      +
    152A  ALA*     3.6    38.6    -      -       +      +
    155A  ILE*     4.2    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  LYS*     4.1    12.9    -      -       -      +
    116A  VAL*     3.0    19.2    +      -       +      +
    117A  PHE*     3.5     6.5    -      -       -      +
    119A  LEU*     1.3    75.7    -      -       -      +
    121A  MET*     1.3    66.3    +      -       +      +
    123A  GLY      3.2     2.3    +      -       -      -
    124A  ASP*     2.9    48.0    +      -       -      +
    149A  TYR*     3.6     8.9    -      -       +      -
    152A  ALA*     4.1     1.5    -      -       -      +
    166A  ILE*     5.4     4.0    -      -       +      +
    169A  GLY      3.9    10.1    -      -       -      -
    170A  LEU*     3.6    42.6    -      -       +      +
    173A  ASN*     3.3    24.4    -      -       -      +
    243A  PRO      4.6     2.7    +      -       -      +
    244A  TYR*     2.6    33.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 121 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41A  ARG      5.1     0.4    -      -       -      +
     44A  LEU*     4.9    10.8    -      -       +      -
     45A  SER*     3.6    28.3    -      -       -      +
     97A  VAL*     4.8     5.8    -      -       +      -
    101A  LEU*     3.7    24.7    -      -       +      -
    117A  PHE*     3.1    44.5    +      -       +      +
    118A  TYR*     3.3    19.1    -      -       +      +
    119A  LEU      3.2     0.2    -      -       -      -
    120A  LYS*     1.3    80.2    -      -       +      +
    122A  LYS*     1.3    62.8    +      -       -      +
    124A  ASP*     3.1    22.4    +      -       -      +
    125A  TYR*     3.1    40.7    +      -       +      -
    243A  PRO      5.2     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 122 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  LEU*     4.0     9.6    -      -       +      +
    101A  LEU*     3.7    15.7    -      -       +      +
    102A  GLU*     3.3    25.0    +      -       -      +
    106A  ILE*     4.0    17.6    -      -       +      +
    118A  TYR      2.9    13.3    +      -       -      +
    119A  LEU*     3.2    17.8    -      -       +      +
    121A  MET*     1.3    73.3    -      -       -      +
    123A  GLY*     1.3    60.4    +      -       -      +
    125A  TYR      3.3     0.9    +      -       -      -
    126A  TYR*     2.9    63.7    +      -       +      +
    144A  GLN      5.4     1.3    -      -       -      -
    148A  ALA*     4.0    15.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 123 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119A  LEU      2.9    11.6    +      -       -      -
    120A  LYS      3.2     4.0    +      -       -      -
    122A  LYS*     1.3    76.4    -      -       -      +
    124A  ASP*     1.3    56.4    +      -       -      +
    126A  TYR      3.8     0.2    -      -       -      -
    127A  ARG*     2.8    31.2    +      -       -      +
    145A  SER*     3.2    29.2    +      -       -      -
    148A  ALA*     3.6     6.6    -      -       -      +
    149A  TYR*     3.4    14.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 124 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  LYS*     5.3     2.6    -      -       -      -
    120A  LYS*     2.9    42.5    +      -       -      +
    121A  MET*     3.1    14.0    +      -       -      +
    123A  GLY*     1.3    75.7    -      -       -      +
    125A  TYR*     1.3    65.8    +      -       +      +
    127A  ARG*     3.0    10.5    +      -       -      +
    128A  TYR*     2.9    47.2    +      -       +      +
    149A  TYR*     2.5    30.7    +      -       -      -
    173A  ASN*     2.8    23.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 125 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  SER*     4.2     4.3    +      -       -      -
     48A  TYR*     3.0    38.4    +      +       +      +
     49A  LYS*     3.3    11.9    +      -       +      +
     52A  VAL*     3.6    27.8    -      -       +      -
     93A  ILE*     5.5     0.7    -      -       +      -
     94A  CYS*     3.5    25.8    -      -       -      +
     97A  VAL*     3.9    27.6    -      -       +      -
     98A  LEU*     4.3    19.3    -      -       +      -
    101A  LEU*     5.0     0.2    -      -       +      -
    121A  MET*     3.1    45.6    +      -       +      +
    124A  ASP*     1.3    82.8    -      -       +      +
    126A  TYR*     1.3    64.7    +      -       -      +
    127A  ARG      3.2     0.2    -      -       -      -
    128A  TYR*     3.4    17.9    +      +       -      -
    129A  LEU*     3.3    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 126 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  LEU*     3.6    30.1    -      -       +      +
    102A  GLU*     6.1     0.7    -      -       -      +
    122A  LYS*     2.9    55.6    +      -       +      +
    125A  TYR*     1.3    76.6    -      -       -      +
    127A  ARG*     1.3    62.9    +      -       -      +
    129A  LEU*     3.2    12.8    +      -       +      +
    130A  ALA*     3.0    18.7    +      -       -      +
    141A  ILE*     3.3    22.4    -      -       +      +
    144A  GLN*     3.1    52.6    +      -       +      -
    145A  SER*     3.7    20.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 127 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  GLY      2.8    15.1    +      -       -      +
    124A  ASP*     3.0    15.0    +      -       -      +
    126A  TYR*     1.3    77.8    -      -       -      +
    128A  TYR*     1.3    67.2    +      -       +      +
    130A  ALA*     3.2     8.7    +      -       -      +
    131A  GLU*     2.9    37.0    +      -       +      +
    145A  SER*     3.7    10.9    +      -       -      +
    149A  TYR*     3.0    16.7    +      -       -      -
    173A  ASN*     3.6    25.6    +      -       -      +
    176A  VAL*     3.6    22.8    -      -       -      +
    177A  PHE*     3.8    25.1    -      -       +      +
    180A  GLU*     4.1     6.7    +      -       -      -
    181A  ILE*     3.9    21.1    -      -       +      +
    303A  SO4      3.0    40.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 128 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  LYS*     5.8     3.8    -      -       -      +
     52A  VAL*     3.9    19.9    -      -       +      +
     56A  ARG*     3.4    46.6    +      -       +      +
     90A  LEU*     5.2     6.7    -      -       +      +
     94A  CYS*     3.8    13.7    -      -       -      -
    124A  ASP*     2.9    39.8    +      -       +      +
    125A  TYR*     3.5    37.5    -      +       -      -
    126A  TYR      3.2     0.6    -      -       -      -
    127A  ARG*     1.3    91.8    +      -       +      +
    129A  LEU*     1.3    67.7    +      -       -      +
    131A  GLU*     3.2    23.1    +      -       -      +
    132A  VAL*     3.6     9.8    +      -       -      +
    173A  ASN*     4.8     0.2    +      -       -      -
    303A  SO4      3.2    19.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 129 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  LEU      5.1     0.2    -      -       -      -
     91A  ARG*     3.8    35.1    +      -       +      +
     94A  CYS*     3.5    23.1    -      -       +      -
     95A  ASN*     3.8    14.6    -      -       -      +
     98A  LEU*     3.6    31.2    -      -       +      -
    125A  TYR      3.3    11.2    +      -       -      +
    126A  TYR*     3.2    17.7    +      -       +      +
    128A  TYR*     1.3    77.8    -      -       -      +
    130A  ALA*     1.3    53.5    +      -       -      +
    132A  VAL*     3.0    11.6    +      -       +      +
    133A  ALA*     2.8    36.2    +      -       +      +
    141A  ILE*     3.8    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126A  TYR      3.0    13.2    +      -       -      +
    127A  ARG*     3.2    13.9    -      -       -      +
    129A  LEU*     1.3    76.9    -      -       -      +
    131A  GLU*     1.3    57.4    +      -       -      +
    132A  VAL      2.8     6.8    +      -       -      -
    133A  ALA*     3.1    17.9    +      -       -      +
    138A  LYS*     4.8     5.2    -      -       -      +
    141A  ILE*     3.5    12.4    -      -       +      +
    142A  VAL*     3.6    35.0    -      -       +      +
    181A  ILE*     4.9    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  ARG*     2.5    47.6    +      -       -      +
     59A  TRP*     3.8    25.3    -      -       +      -
     60A  ARG*     5.4     0.7    +      -       -      -
    127A  ARG*     2.9    33.2    +      -       +      +
    128A  TYR*     3.2    17.4    +      -       -      +
    130A  ALA*     1.3    71.9    -      -       -      +
    132A  VAL*     1.3    58.8    +      -       +      +
    133A  ALA      5.4     0.2    -      -       -      -
    180A  GLU*     4.9     4.7    -      -       -      +
    181A  ILE*     4.2    19.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  TRP*     3.0    44.2    -      -       +      +
     87A  GLU*     3.4    22.5    -      -       +      +
     90A  LEU*     4.0    20.0    -      -       +      -
     91A  ARG*     2.8    45.8    +      -       +      +
    128A  TYR      3.9    10.1    -      -       -      +
    129A  LEU*     3.0    17.8    +      -       -      +
    130A  ALA      2.9     0.2    -      -       -      -
    131A  GLU*     1.3    77.4    -      -       +      +
    133A  ALA*     1.3    64.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91A  ARG*     4.1     7.0    -      -       -      +
    129A  LEU*     2.8    15.1    +      -       +      +
    130A  ALA*     3.1    16.9    +      -       -      +
    131A  GLU      5.4     0.2    -      -       -      -
    132A  VAL*     1.3    83.3    -      -       -      +
    134A  ALA*     1.3    62.1    +      -       -      +
    137A  ASP*     4.7     2.7    -      -       +      -
    138A  LYS*     3.9    26.8    -      -       -      +
    141A  ILE*     4.3    11.0    -      -       +      -
----------------------------------------------------------
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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