Contacts of the helix formed by residues 98 - 120 (chain A) in PDB entry 1ORZ


Residue contacts within the protein are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332). A short description of the analytical approach is given at the end of the page.
For CSU analysis of other PDB entry

Note:
Non-standard 3 letter residue codes indicate a heterogroup. To identify and analyse, use LPC software

Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB   - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC   - hydrophobic-hydrophilic contact (destabilizing contact)
+/-  - indicates presence/absence of a specific contacts
*    - indicates residues forming contacts  by their side chain
       (including CA atoms)
Residues in contact with ASP 98 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  GLY*     1.4    70.8    -      -       -      -
     99A  GLN*     1.3    58.5    +      -       -      +
    100A  ASP*     2.7    23.0    -      -       -      +
    101A  SER*     2.6    31.1    +      -       -      -
    102A  ILE*     2.9    25.6    +      -       -      +
    378A  THR      5.6     0.2    -      -       -      +
    409A  VAL*     3.1     5.4    -      -       -      +
    410A  SER*     2.5    44.0    +      -       -      +
    596A  THR*     3.5    11.5    +      -       +      +
    598A  ASP*     2.9    37.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  MET*     5.4     3.3    -      -       -      +
     90A  VAL*     2.7    42.1    -      -       -      +
     95A  TRP*     3.7    13.1    -      -       -      +
     97A  GLY      4.3     5.4    +      -       -      +
     98A  ASP*     1.3    71.2    -      -       -      +
    100A  ASP*     1.3    62.2    +      -       -      +
    102A  ILE*     3.8     2.9    -      -       -      +
    103A  HIS*     2.8    33.1    +      -       -      +
    598A  ASP      3.6     7.1    +      -       -      +
    599A  GLU*     3.6    16.8    -      -       -      +
    600A  LYS      3.7     4.0    -      -       -      +
    601A  GLU*     2.8    34.8    -      -       +      +
    605A  VAL*     2.9    32.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  ASP*     2.7    19.8    -      -       -      +
     99A  GLN*     1.3    75.4    -      -       -      +
    101A  SER*     1.3    69.1    +      -       -      -
    103A  HIS*     3.4     6.2    +      -       -      +
    104A  TYR*     3.0    22.7    +      -       -      +
    380A  TRP*     5.5     9.7    +      -       -      +
    598A  ASP*     2.6    34.9    +      -       -      +
    600A  LYS      3.8     6.8    +      -       -      +
    601A  GLU*     4.9     5.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  ASP*     2.6    37.3    +      -       -      -
    100A  ASP*     1.3    82.7    +      -       -      +
    102A  ILE*     1.3    75.5    +      -       -      +
    104A  TYR*     3.0     9.2    +      -       -      +
    105A  MET      2.9    18.4    +      -       -      -
    380A  TRP*     5.5     6.7    -      -       -      -
    409A  VAL*     4.0    25.6    -      -       -      -
    410A  SER      3.5     5.7    +      -       -      -
    411A  VAL*     3.9     5.5    -      -       -      -
    428A  PHE*     3.8    12.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  MET*     4.2    14.6    -      -       +      +
     89A  THR*     3.7    31.0    -      -       +      +
     90A  VAL*     4.1    15.5    -      -       +      -
     93A  SER*     4.9     0.7    -      -       -      +
     97A  GLY      4.7     1.6    -      -       -      -
     98A  ASP      2.9    24.6    +      -       -      +
     99A  GLN*     3.8     6.3    -      -       -      +
    101A  SER*     1.3    81.8    +      -       -      +
    103A  HIS*     1.3    67.1    +      -       -      +
    105A  MET*     3.0     8.3    +      -       +      +
    106A  THR*     2.8    35.5    +      -       -      +
    411A  VAL*     2.7    49.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  TRP*     3.7    21.0    -      +       -      -
     86A  MET*     3.6    28.2    -      -       -      -
     99A  GLN      2.8    20.1    +      -       -      +
    100A  ASP*     3.6     6.1    -      -       -      +
    102A  ILE*     1.3    80.2    -      -       -      +
    104A  TYR*     1.3    66.1    +      -       -      +
    106A  THR*     3.9     0.4    -      -       -      -
    107A  ARG*     2.9    64.7    +      -       +      +
    601A  GLU*     5.4     3.4    -      -       +      -
    602A  CYS*     5.0    13.8    -      -       -      +
    603A  PRO*     4.1    26.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100A  ASP      3.0    12.8    +      -       -      +
    101A  SER*     3.0    10.7    +      -       -      +
    103A  HIS*     1.3    81.6    -      -       -      +
    105A  MET*     1.3    65.5    +      -       -      +
    107A  ARG*     4.2     1.7    -      -       -      +
    108A  GLU*     3.0    62.6    +      -       +      +
    380A  TRP*     4.2    34.1    -      +       +      -
    427A  VAL*     3.3    29.6    +      -       +      +
    428A  PHE*     4.1    12.8    -      +       -      -
    430A  ARG*     5.7     3.3    +      -       -      -
    431A  ALA*     3.6    29.2    -      -       +      +
    434A  HIS*     6.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  HIS*     5.1     5.2    -      -       +      -
     89A  THR*     6.3     1.1    -      -       +      -
    101A  SER      2.9     8.4    +      -       -      +
    102A  ILE*     3.7     9.0    -      -       +      +
    104A  TYR*     1.3    84.4    -      -       -      +
    106A  THR*     1.3    54.9    +      -       -      +
    108A  GLU*     3.5     1.2    -      -       -      +
    109A  ALA*     2.7    33.1    +      -       -      +
    411A  VAL*     3.7    24.9    -      -       +      -
    420A  ASN*     4.2    22.9    -      -       +      +
    423A  LEU*     3.5    21.1    -      -       +      +
    424A  ASP*     3.3    37.0    -      -       +      +
    427A  VAL*     3.7    14.5    -      -       +      +
    428A  PHE*     3.3    26.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     73A  ALA*     5.7     2.6    +      -       +      +
     82A  TRP*     3.0    43.9    -      -       +      +
     85A  HIS*     3.1    39.1    +      -       +      +
     86A  MET*     4.2     7.7    +      -       -      -
     89A  THR*     4.5     0.2    -      -       -      +
    102A  ILE*     2.8    34.3    +      -       -      +
    103A  HIS      4.0     2.7    -      -       -      -
    105A  MET*     1.3    74.5    -      -       -      +
    107A  ARG*     1.3    64.5    +      -       -      +
    109A  ALA*     3.1    18.7    +      -       +      +
    110A  PRO*     3.4     5.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  TRP*     3.5    57.5    -      -       +      +
    103A  HIS*     2.9    47.0    +      -       +      +
    104A  TYR*     4.2     2.5    -      -       -      +
    106A  THR*     1.3    78.5    -      -       -      +
    108A  GLU*     1.3    65.6    +      -       +      +
    109A  ALA      3.1     0.7    +      -       -      -
    110A  PRO*     3.6     9.5    -      -       -      +
    111A  LYS*     4.9     6.5    +      -       -      +
    602A  CYS*     6.2     1.0    -      -       -      +
    603A  PRO*     5.9     0.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 108 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104A  TYR*     3.0    64.3    +      -       +      +
    105A  MET      3.7     2.5    -      -       -      +
    107A  ARG*     1.3    78.9    -      -       +      +
    109A  ALA*     1.3    65.8    +      -       -      +
    110A  PRO      3.4     1.1    -      -       -      -
    111A  LYS*     3.4    24.0    +      -       -      +
    112A  SER*     3.3    20.4    +      -       -      +
    427A  VAL*     3.9    15.1    -      -       +      +
    430A  ARG*     3.1    27.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 109 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  ALA*     3.9    10.3    -      -       +      -
     73A  ALA      5.0     0.7    -      -       -      +
     85A  HIS*     5.5     0.2    -      -       -      +
    105A  MET      2.7     8.5    +      -       -      +
    106A  THR*     3.1    13.6    +      -       +      +
    108A  GLU*     1.3    75.8    -      -       -      +
    110A  PRO*     1.3    74.6    -      -       +      +
    112A  SER*     3.2     4.2    +      -       -      -
    113A  ILE*     3.1    22.5    +      -       -      +
    423A  LEU*     3.3    42.1    -      -       +      +
    427A  VAL*     4.4     3.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     72A  ALA*     4.9     0.2    -      -       +      -
     73A  ALA*     3.0    37.2    -      -       +      +
     74A  LEU*     4.2    10.8    -      -       +      -
     82A  TRP*     5.8     6.5    -      -       +      -
    106A  THR      3.4     9.2    -      -       -      +
    107A  ARG      3.6     9.0    -      -       -      +
    109A  ALA*     1.3    99.3    -      -       +      +
    111A  LYS*     1.3    62.3    +      -       -      +
    113A  ILE*     3.0    25.8    -      -       +      +
    114A  ILE*     3.0    17.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  ARG*     4.9     5.4    +      -       -      +
    108A  GLU*     3.4    33.9    +      -       -      +
    109A  ALA      3.3     0.4    -      -       -      -
    110A  PRO*     1.3    78.0    -      -       -      +
    112A  SER*     1.3    62.7    +      -       -      +
    114A  ILE*     3.5    11.5    +      -       -      +
    115A  GLU*     3.2    23.9    +      -       -      +
    430A  ARG*     4.2    23.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ARG*     6.1     0.4    -      -       -      -
    108A  GLU*     3.3    10.0    +      -       -      -
    109A  ALA      3.2     7.8    +      -       -      -
    110A  PRO      3.2     0.4    -      -       -      -
    111A  LYS*     1.3    79.6    -      -       -      +
    113A  ILE*     1.3    60.1    +      -       -      +
    115A  GLU*     3.1    19.7    -      -       -      +
    116A  LEU*     3.0    25.7    -      -       -      +
    423A  LEU*     5.3     0.2    -      -       -      -
    426A  VAL*     4.4    13.2    -      -       -      -
    427A  VAL*     4.0    24.0    -      -       -      +
    430A  ARG*     3.2    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  ILE*     3.4    40.8    -      -       +      -
     72A  ALA*     4.7     6.7    -      -       +      -
     74A  LEU*     3.4    30.7    -      -       +      -
    109A  ALA      3.1     8.4    +      -       -      +
    110A  PRO*     3.0    19.3    -      -       +      +
    112A  SER*     1.3    73.4    -      -       -      +
    114A  ILE*     1.3    72.8    +      -       +      +
    115A  GLU      3.0     2.0    -      -       -      -
    116A  LEU*     2.8    25.1    +      -       +      +
    117A  GLU*     3.2     8.8    +      -       -      +
    123A  PHE*     3.8    21.6    -      -       +      -
    153A  CYS*     4.0    13.5    -      -       -      -
    423A  LEU*     5.3     4.3    -      -       +      -
    426A  VAL*     5.6     5.4    -      -       +      -
    142B  GLU*     5.5     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74A  LEU*     5.1     3.6    -      -       +      -
    110A  PRO*     3.0    24.8    +      -       +      +
    111A  LYS*     3.8     9.0    -      -       +      +
    113A  ILE*     1.3    86.4    -      -       +      +
    115A  GLU*     1.3    56.3    +      -       -      +
    117A  GLU*     2.8    25.3    +      -       +      +
    118A  HIS*     2.8    32.7    +      -       +      +
    140B  GLY      5.0     2.5    -      -       -      +
    141B  THR*     2.7    42.6    -      -       -      +
    142B  GLU*     4.2    18.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ARG*     3.0    36.6    +      -       -      -
    111A  LYS*     3.2    10.4    +      -       -      +
    112A  SER*     3.1    25.0    -      -       -      +
    114A  ILE*     1.3    79.6    -      -       -      +
    116A  LEU*     1.3    53.0    +      -       -      +
    118A  HIS*     3.1    26.0    +      -       -      +
    119A  TYR*     2.7    48.9    +      -       +      +
    430A  ARG*     4.1    17.2    +      -       -      -
    434A  HIS*     5.3     0.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ARG*     4.8     5.6    -      -       -      +
    112A  SER      3.0    24.5    -      -       -      +
    113A  ILE*     2.8    16.1    +      -       +      +
    115A  GLU*     1.3    82.7    -      -       +      +
    117A  GLU*     1.3    57.2    +      -       -      +
    119A  TYR*     2.8    45.7    +      -       +      +
    120A  GLY      3.1     3.5    +      -       -      -
    121A  VAL*     3.1    25.8    -      -       +      +
    123A  PHE*     4.5     7.4    -      -       +      -
    163A  LEU*     3.7    26.7    -      -       +      -
    166A  THR*     5.1     0.7    -      -       +      -
    167A  LEU*     3.4    33.2    -      -       +      -
    426A  VAL*     4.3    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  ILE      3.2     2.4    +      -       -      -
    114A  ILE*     2.8    20.7    +      -       +      +
    116A  LEU*     1.3    74.6    -      -       -      +
    118A  HIS*     1.3    60.7    +      -       +      +
    120A  GLY*     2.7    23.2    +      -       -      -
    121A  VAL      4.1     3.8    -      -       -      +
    123A  PHE*     3.5    24.4    -      -       +      -
    125A  ARG*     2.7    36.8    +      -       -      +
    133B  ARG*     4.5     0.3    +      -       -      -
    142B  GLU*     4.5    10.1    -      -       +      +
    143B  VAL*     2.8    40.7    +      -       -      +
    196B  ARG*     2.7    25.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  ILE*     2.8    52.1    +      -       +      +
    115A  GLU*     3.1    15.6    +      -       +      +
    117A  GLU*     1.3    83.1    -      -       -      +
    119A  TYR*     1.3    64.1    +      -       +      +
    120A  GLY      3.2     0.7    +      -       -      -
    131B  LEU*     3.4    18.0    -      -       -      +
    133B  ARG*     3.8    21.8    +      -       -      +
    138B  LYS*     3.9    34.9    -      -       +      +
    139B  ASP*     6.2     0.8    -      -       -      +
    140B  GLY      4.8     3.7    +      -       -      -
    141B  THR      3.6     7.2    +      -       -      -
    142B  GLU*     4.8     2.3    -      -       -      -
    143B  VAL*     5.1     2.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  ARG*     4.7     3.5    +      -       -      -
     41A  PHE*     3.5    27.9    -      +       -      -
    115A  GLU*     2.7    55.9    +      -       +      +
    116A  LEU*     2.8    32.9    +      -       +      +
    118A  HIS*     1.3    81.3    -      -       +      +
    120A  GLY*     1.3    56.3    +      -       -      +
    166A  THR*     3.6    14.9    -      -       +      +
    167A  LEU*     5.3     0.7    -      -       +      -
    170A  GLN*     2.9    46.1    +      -       +      +
    173A  ARG*     5.4    11.2    -      -       -      -
    174A  HIS*     5.6     0.2    -      +       -      -
    130B  TYR*     5.7     1.0    -      -       -      +
    131B  LEU*     3.5    18.6    +      -       -      +
    191B  TRP*     4.8     2.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  GLU      2.7    11.6    +      -       -      -
    118A  HIS      3.1     0.6    -      -       -      -
    119A  TYR*     1.3    81.4    -      -       -      +
    121A  VAL*     1.3    66.3    +      -       -      +
    122A  PRO*     3.2     7.6    -      -       -      +
    166A  THR*     4.2     5.5    +      -       -      +
    131B  LEU*     4.0    19.1    -      -       -      -
    190B  ARG*     4.0    10.6    +      -       -      -
    191B  TRP*     4.6     6.1    -      -       -      -
    196B  ARG*     3.0    18.1    +      -       -      -
----------------------------------------------------------
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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