Contacts of the helix formed by residues 37 - 63 (chain D) in PDB entry 1ZOY


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 37 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  GLN*     3.2    18.6    -      -       -      +
    242B  MET      5.1     4.5    -      -       -      +
    243B  ALA*     5.0    11.4    +      -       -      +
    244B  THR*     6.2     0.2    -      -       -      +
    245B  TYR*     4.5    22.0    +      -       +      +
    246B  LYS*     6.3     0.6    -      -       -      +
     35D  SER      3.6     3.5    +      -       -      +
     36D  SER*     1.3    73.3    +      -       -      +
     38D  ALA*     1.3    61.4    +      -       -      +
     39D  ALA      3.5     1.6    -      -       -      -
     40D  SER*     2.8    28.9    +      -       -      +
     41D  LEU*     3.1    53.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 38 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  GLN*     3.9     0.6    +      -       -      +
     36D  SER*     3.4    15.9    +      -       -      +
     37D  LYS*     1.3    72.8    -      -       -      +
     39D  ALA*     1.3    67.1    +      -       -      +
     41D  LEU*     3.2     8.2    +      -       -      +
     42D  HIS*     3.0    24.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 39 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  GLN*     3.6     8.3    +      -       -      +
    208B  ASP*     3.3    44.4    -      -       -      +
    209B  PRO*     4.5     2.5    -      -       +      -
    213B  TYR*     3.7    16.5    -      -       +      -
     37D  LYS      3.5     0.4    -      -       -      -
     38D  ALA*     1.3    78.3    -      -       -      +
     40D  SER*     1.3    62.0    +      -       -      +
     42D  HIS*     3.4     7.4    +      -       -      +
     43D  TRP*     3.1    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 40 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  GLN*     2.9    23.0    +      -       -      -
    213B  TYR*     3.4    21.0    +      -       -      -
    242B  MET*     3.3    27.8    +      -       -      -
    243B  ALA*     4.5     3.3    -      -       -      +
     37D  LYS*     2.8    25.7    +      -       -      +
     39D  ALA*     1.3    79.5    -      -       -      +
     41D  LEU*     1.3    61.2    +      -       -      +
     43D  TRP*     3.3     5.9    +      -       -      +
     44D  THR*     3.1    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 41 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36D  SER*     5.8     1.8    -      -       -      +
     37D  LYS*     3.1    66.6    +      -       +      +
     38D  ALA*     3.7     6.3    -      -       -      +
     40D  SER*     1.3    73.9    +      -       -      +
     42D  HIS*     1.3    61.4    +      -       -      +
     44D  THR*     2.5    24.9    +      -       +      +
     45D  GLY*     2.8    14.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 42 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38D  ALA      3.0    15.9    +      -       -      +
     39D  ALA*     3.7     6.6    +      -       -      +
     41D  LEU*     1.3    75.1    -      -       -      +
     43D  TRP*     1.3    65.9    +      -       -      +
     45D  GLY*     3.1     2.8    +      -       -      +
     46D  GLU*     3.0    49.2    +      -       -      +
     82D  TRP*     3.6    46.5    -      +       +      -
     86D  GLN*     3.5    15.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 43 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213B  TYR*     3.5    33.0    -      +       +      -
    239B  LYS*     4.1    49.8    -      -       +      +
    240B  LYS*     5.0     3.4    -      -       +      -
    243B  ALA*     4.2    13.7    -      -       +      -
    112C  ASP*     3.9    41.7    -      -       +      -
     39D  ALA      3.1    14.1    +      -       -      +
     40D  SER      3.3     8.7    -      -       -      +
     41D  LEU      3.2     0.2    -      -       -      -
     42D  HIS*     1.3    79.6    +      -       -      +
     44D  THR*     1.3    90.2    +      -       +      +
     46D  GLU*     3.3    15.4    +      -       -      +
     47D  ARG*     3.1    62.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 44 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243B  ALA*     3.3    36.6    -      -       +      +
     40D  SER      3.1     4.0    +      -       -      +
     41D  LEU*     2.5    36.0    +      -       +      +
     43D  TRP*     1.3    86.6    -      -       +      +
     45D  GLY*     1.3    65.7    +      -       -      +
     47D  ARG*     3.0     8.5    +      -       +      +
     48D  VAL*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 45 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     41D  LEU      2.8    16.0    +      -       -      -
     42D  HIS*     3.1     5.1    +      -       -      -
     44D  THR*     1.3    77.8    +      -       -      +
     46D  GLU*     1.3    61.2    +      -       -      +
     48D  VAL*     3.1     8.7    +      -       -      +
     49D  VAL*     3.1    20.8    +      -       -      +
     82D  TRP*     3.5    21.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 46 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42D  HIS*     3.0    27.5    +      -       +      +
     43D  TRP*     3.4    17.5    -      -       -      +
     44D  THR      3.1     0.2    -      -       -      -
     45D  GLY*     1.3    75.9    -      -       -      +
     47D  ARG*     1.3    90.0    +      -       -      +
     49D  VAL*     3.4     3.9    +      -       -      +
     50D  SER*     2.9    28.7    +      -       -      +
     79D  HIS*     4.7     1.2    +      -       +      +
     82D  TRP*     3.6    37.2    -      -       +      +
     86D  GLN*     3.0    40.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 47 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108C  HIS*     5.8     0.8    -      -       -      +
    109C  LEU*     4.3    11.7    -      -       +      -
    112C  ASP*     2.8    44.6    +      -       +      -
   1305C  HEM      3.7    40.0    +      -       -      +
     43D  TRP*     3.1    58.7    +      -       +      +
     44D  THR*     3.0    12.5    +      -       -      +
     46D  GLU*     1.3   103.9    +      -       -      +
     48D  VAL*     1.3    59.1    +      -       +      +
     50D  SER*     2.8    25.4    +      -       -      -
     51D  VAL*     2.8    21.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 48 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44D  THR*     2.9    22.6    +      -       -      +
     45D  GLY*     3.1    11.2    +      -       -      +
     47D  ARG*     1.3    75.4    -      -       +      +
     49D  VAL*     1.3    63.6    +      -       +      +
     51D  VAL*     2.9    16.9    -      -       +      +
     52D  LEU*     2.9    38.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 49 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45D  GLY      3.1    11.1    +      -       -      +
     46D  GLU      3.5     9.6    -      -       -      +
     48D  VAL*     1.3    80.6    -      -       +      +
     50D  SER*     1.3    59.7    +      -       -      +
     51D  VAL      3.3     0.2    -      -       -      -
     52D  LEU*     3.6    14.4    -      -       +      -
     53D  LEU*     2.8    33.1    +      -       -      +
     75D  ALA*     4.9     9.2    -      -       +      +
     78D  LEU*     3.7    25.4    -      -       +      -
     79D  HIS*     4.1    27.8    +      -       +      +
     82D  TRP*     3.8    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 50 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109C  LEU*     4.4    13.5    -      -       -      -
   1305C  HEM      3.7    29.3    -      -       -      +
     46D  GLU*     2.9    18.3    +      -       -      +
     47D  ARG*     2.8    18.7    +      -       -      -
     49D  VAL*     1.3    79.4    -      -       -      +
     51D  VAL*     1.3    59.9    +      -       -      +
     53D  LEU*     3.7     2.9    +      -       -      +
     54D  LEU*     3.3    20.4    +      -       -      +
     79D  HIS*     3.2    29.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 51 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109C  LEU*     3.5    25.6    -      -       +      -
     47D  ARG*     2.8    18.7    +      -       +      +
     48D  VAL*     2.9    26.7    +      -       +      +
     50D  SER*     1.3    74.1    -      -       -      +
     52D  LEU*     1.3    66.4    +      -       +      +
     54D  LEU*     3.1    12.4    +      -       +      +
     55D  GLY*     3.0    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 52 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48D  VAL*     2.9    30.4    +      -       +      +
     49D  VAL*     3.6    14.8    -      -       +      +
     50D  SER      3.3     0.2    -      -       -      -
     51D  VAL*     1.3    79.9    -      -       +      +
     53D  LEU*     1.3    59.0    +      -       -      +
     54D  LEU      2.9     4.5    -      -       -      -
     55D  GLY*     3.0     4.1    +      -       -      -
     56D  LEU*     3.0    39.8    +      -       +      +
     75D  ALA*     5.2     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 53 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1305C  HEM      3.6    38.2    -      -       +      +
     49D  VAL      2.8    21.9    +      -       -      +
     50D  SER*     4.1     4.5    -      -       -      +
     52D  LEU*     1.3    72.4    -      -       -      +
     54D  LEU*     1.3    59.2    +      -       -      +
     56D  LEU*     3.9     6.7    -      -       -      -
     57D  LEU*     3.4    26.5    +      -       +      +
     72D  LEU*     4.2    16.4    -      -       +      -
     75D  ALA*     4.2    19.9    -      -       +      +
     76D  LEU*     3.4    34.8    -      -       +      +
     79D  HIS*     4.0    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 54 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102C  THR*     4.4     4.9    -      -       +      -
    106C  ILE*     4.0    39.0    -      -       +      -
    109C  LEU*     4.5    17.7    -      -       +      -
   1305C  HEM      4.1    25.6    -      -       +      -
     50D  SER      3.3    13.9    +      -       -      +
     51D  VAL*     3.1    15.9    -      -       +      +
     52D  LEU      2.9     0.4    -      -       -      -
     53D  LEU*     1.3    79.7    -      -       -      +
     55D  GLY*     1.3    56.6    +      -       -      +
     57D  LEU*     4.5     1.5    -      -       +      +
     58D  PRO*     3.0    24.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 55 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51D  VAL      3.0    12.5    +      -       -      -
     52D  LEU*     3.0     3.5    +      -       -      -
     54D  LEU*     1.3    77.1    -      -       -      +
     56D  LEU*     1.3    63.7    +      -       -      +
     58D  PRO*     3.3     7.3    -      -       -      +
     59D  ALA*     3.2    22.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 56 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52D  LEU*     3.0    25.0    +      -       +      +
     53D  LEU*     4.0     5.8    -      -       -      +
     54D  LEU      3.3     0.4    -      -       -      -
     55D  GLY*     1.3    76.7    -      -       -      +
     57D  LEU*     1.3    57.7    +      -       -      +
     59D  ALA*     3.0     4.5    +      -       +      -
     60D  ALA*     2.6    38.5    +      -       -      +
     68D  MET*     4.3    15.9    -      -       -      +
     71D  SER*     3.7    43.1    -      -       -      +
     72D  LEU*     3.5    24.7    -      -       +      -
     75D  ALA*     3.9    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 57 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98C  LEU*     4.4    16.6    -      -       +      -
     99C  MET*     5.3     3.6    -      -       +      -
    102C  THR*     4.4     7.9    -      -       +      +
   1305C  HEM      3.4    32.8    -      -       +      -
     53D  LEU*     3.4    23.1    +      -       +      +
     54D  LEU*     4.5     2.0    -      -       +      +
     56D  LEU*     1.3    78.5    -      -       -      +
     58D  PRO*     1.3    70.8    -      -       +      +
     60D  ALA*     3.4     6.3    +      -       -      +
     61D  TYR*     3.4    15.1    +      -       -      +
     72D  LEU*     4.2    14.4    -      -       +      -
     76D  LEU*     5.2     2.0    -      -       +      -
   1306D  EPH      4.0    36.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 58 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54D  LEU*     3.0    28.9    -      -       +      +
     55D  GLY*     3.3    10.5    -      -       -      +
     57D  LEU*     1.3    87.6    -      -       +      +
     59D  ALA*     1.3    53.5    +      -       -      +
     61D  TYR*     2.7    30.5    +      -       +      +
     62D  LEU*     3.1    22.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 59 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55D  GLY      3.2    17.3    +      -       -      +
     56D  LEU*     3.0     9.4    +      -       +      +
     58D  PRO*     1.3    79.1    -      -       -      +
     60D  ALA*     1.3    57.5    +      -       -      +
     62D  LEU*     3.4     6.8    +      -       -      +
     63D  ASN*     2.9    28.4    +      -       -      +
     68D  MET*     3.6    27.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 60 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56D  LEU      2.6    20.3    +      -       -      +
     57D  LEU      3.8     4.9    -      -       -      +
     59D  ALA*     1.3    72.2    -      -       -      +
     61D  TYR*     1.3    60.5    +      -       -      +
     63D  ASN      4.1     1.3    -      -       -      -
     64D  PRO*     3.4    23.6    -      -       -      +
     68D  MET*     3.4    26.8    -      -       +      +
     72D  LEU*     4.0    22.0    -      -       +      -
    127D  CYS*     3.9     7.8    -      -       -      -
   1306D  EPH      3.4    17.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 61 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143C  MET*     3.2    33.2    -      -       +      +
     57D  LEU      3.4     8.3    +      -       -      +
     58D  PRO*     2.7    19.4    +      -       +      +
     60D  ALA*     1.3    72.0    -      -       -      +
     62D  LEU*     1.3    87.0    +      -       +      +
     63D  ASN      3.3     0.5    +      -       -      -
     64D  PRO*     3.3    15.2    -      -       -      +
   1306D  EPH      3.3    88.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 62 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58D  PRO*     3.1    19.6    +      -       +      +
     59D  ALA*     4.1     5.8    -      -       -      +
     61D  TYR*     1.3   101.0    -      -       +      +
     63D  ASN*     1.3    61.5    +      -       +      +
     64D  PRO*     3.7     3.3    -      -       -      +
   1306D  EPH      4.1     9.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 63 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59D  ALA      2.9    14.0    +      -       -      +
     60D  ALA      4.0     0.2    -      -       -      -
     62D  LEU*     1.3    82.4    -      -       +      +
     64D  PRO*     1.3    62.6    -      -       -      +
     65D  CYS*     3.4    24.7    +      -       -      +
     68D  MET*     3.2    25.8    -      -       +      +
----------------------------------------------------------
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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