Contacts of the helix formed by residues 119 - 144 (chain A) in PDB entry 2JXP


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 ALA 119 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115A  LEU      3.0    10.0    +      -       -      +
    116A  ALA*     2.8    13.5    +      -       -      +
    117A  LYS      3.2     0.4    -      -       -      -
    118A  ALA*     1.3    78.7    -      -       -      +
    120A  GLU*     1.3    69.5    +      -       -      +
    121A  GLU      3.4     1.1    -      -       -      -
    122A  GLU*     2.9     7.2    +      -       -      +
    123A  MET*     2.8    55.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  LEU*     3.4    19.1    -      -       +      -
    108A  PRO*     3.7    31.8    -      -       +      +
    110A  LEU*     5.2     0.7    -      -       -      +
    116A  ALA*     2.8    43.2    +      -       -      +
    117A  LYS*     2.6    28.6    +      -       -      +
    119A  ALA*     1.3    77.4    -      -       -      +
    121A  GLU*     1.3    58.3    +      -       -      +
    122A  GLU      2.9     2.3    +      -       -      -
    123A  MET*     4.4     9.0    -      -       -      +
    124A  LEU*     2.8    48.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 121 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  ARG*     2.8    44.3    +      -       -      -
     63A  LYS*     3.6    21.3    -      -       -      +
     79A  LEU*     3.4    20.8    -      -       -      +
    107A  LEU*     4.0    11.7    -      -       +      +
    117A  LYS      4.3    15.8    +      -       -      +
    118A  ALA      5.9     0.4    -      -       -      -
    119A  ALA      3.4     1.2    -      -       -      -
    120A  GLU*     1.3    76.8    -      -       -      +
    122A  GLU*     1.3    55.3    +      -       -      +
    124A  LEU*     5.3     0.7    -      -       -      -
    125A  TYR*     3.2    29.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 122 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118A  ALA      4.6    12.0    +      -       -      +
    119A  ALA*     2.9     9.4    +      -       -      +
    120A  GLU      2.9     0.4    +      -       -      -
    121A  GLU*     1.3    80.1    -      -       -      +
    123A  MET*     1.3    60.8    +      -       +      +
    124A  LEU      3.4     0.2    -      -       -      -
    125A  TYR*     3.1     2.0    +      -       -      +
    126A  LYS*     2.7    73.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 123 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    119A  ALA*     2.8    45.2    +      -       +      +
    120A  GLU*     4.0     7.9    -      -       -      +
    122A  GLU*     1.3    76.3    -      -       +      +
    124A  LEU*     1.3    61.6    +      -       +      +
    126A  LYS*     3.3    14.8    -      -       +      +
    127A  ASP*     3.0    33.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 124 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  LEU*     3.9    18.8    -      -       +      -
    105A  ARG*     3.4    47.3    -      -       +      +
    106A  ILE      3.2    33.7    -      -       -      +
    107A  LEU*     3.9    13.9    -      -       +      -
    108A  PRO*     4.6     0.2    -      -       +      -
    120A  GLU*     2.8    31.8    +      -       +      +
    121A  GLU*     5.3     0.2    -      -       -      -
    123A  MET*     1.3    75.7    -      -       +      +
    125A  TYR*     1.3    56.0    +      -       -      +
    127A  ASP*     4.3     3.8    -      -       +      +
    128A  MET*     3.0    31.0    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     61A  ARG*     3.3    59.4    +      -       +      +
     79A  LEU*     5.5     0.4    -      -       -      +
    120A  GLU      4.0     0.8    +      -       -      -
    121A  GLU*     3.2    25.3    -      -       -      +
    122A  GLU*     3.1     5.9    +      -       -      +
    124A  LEU*     1.3    78.4    -      -       -      +
    126A  LYS*     1.3    60.2    +      -       -      +
    128A  MET*     3.3    11.6    +      -       +      +
    129A  GLN*     2.8    59.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 126 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122A  GLU*     2.7    54.5    +      -       +      +
    123A  MET*     3.3    19.7    -      -       +      +
    125A  TYR*     1.3    69.5    -      -       -      +
    127A  ASP*     1.3    64.3    +      -       +      +
    129A  GLN*     4.0     4.8    -      -       -      +
    130A  LYS*     2.9    40.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 127 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    105A  ARG*     2.7    32.0    +      -       -      +
    123A  MET      3.0    20.1    +      -       -      +
    124A  LEU*     4.3     1.3    -      -       -      +
    126A  LYS*     1.3    79.3    -      -       +      +
    128A  MET*     1.3    57.6    +      -       -      +
    130A  LYS*     3.8     5.9    -      -       -      +
    131A  ASP*     2.9    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 128 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  ARG*     3.4    36.1    -      -       +      +
     79A  LEU*     3.9     9.4    -      -       +      +
     81A  TYR*     3.4    24.9    -      -       +      -
    103A  LEU*     3.3    42.0    -      -       +      +
    105A  ARG*     3.5    28.9    -      -       +      +
    124A  LEU      3.0    27.2    +      -       -      +
    125A  TYR*     3.6    13.2    -      -       +      +
    126A  LYS      3.3     0.2    -      -       -      -
    127A  ASP*     1.3    79.1    +      -       -      +
    129A  GLN*     1.3    59.3    +      -       -      +
    131A  ASP*     3.3     4.8    +      -       -      -
    132A  ALA*     2.9    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 129 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26A  THR*     4.8    12.6    +      -       -      -
     27A  ILE*     4.8    10.8    -      -       -      +
     30A  ASP*     5.4    11.1    +      -       -      +
     61A  ARG*     4.4     0.5    -      -       -      +
     81A  TYR*     2.9    45.4    +      -       -      -
    125A  TYR*     2.8    54.3    +      -       +      +
    126A  LYS*     4.0     5.6    -      -       -      +
    128A  MET*     1.3    72.0    -      -       -      +
    130A  LYS*     1.3    62.9    +      -       -      +
    132A  ALA*     3.4     4.8    +      -       -      +
    133A  VAL*     3.1    25.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30A  ASP*     5.8     2.6    +      -       -      -
    126A  LYS*     2.9    26.1    +      -       -      +
    127A  ASP*     3.8     5.6    -      -       -      +
    129A  GLN*     1.3    73.2    -      -       -      +
    131A  ASP*     1.3    66.1    +      -       -      +
    133A  VAL*     3.0     9.7    -      -       +      +
    134A  GLN*     3.0    46.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103A  LEU*     3.3    23.2    -      -       +      +
    105A  ARG*     6.2     0.2    -      -       -      +
    127A  ASP*     2.9    24.6    +      -       -      +
    128A  MET*     3.5     8.1    -      -       -      +
    129A  GLN      3.3     0.2    -      -       -      -
    130A  LYS*     1.3    75.7    -      -       -      +
    132A  ALA*     1.3    50.7    +      -       -      +
    134A  GLN*     3.0     8.9    +      -       -      +
    135A  GLN*     2.7    65.6    +      -       -      +
    138A  ARG*     5.7     2.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  ILE*     5.3     4.9    -      -       +      -
     81A  TYR*     3.6    22.7    -      -       +      +
     83A  VAL*     4.3    10.1    -      -       +      -
    101A  ILE*     3.5     5.6    -      -       +      +
    103A  LEU*     3.6    18.1    -      -       +      +
    128A  MET      2.9    19.8    +      -       -      +
    129A  GLN*     3.4     4.5    +      -       -      +
    131A  ASP*     1.3    72.0    -      -       -      +
    133A  VAL*     1.3    57.6    +      -       -      +
    135A  GLN*     3.2     9.5    +      -       -      +
    136A  ILE*     3.0    34.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  ILE*     4.7    11.4    -      -       +      +
     30A  ASP*     4.0    13.9    -      -       +      +
     31A  LEU*     3.6    45.5    -      -       +      +
     34A  VAL*     3.8    24.0    -      -       +      -
    129A  GLN      3.1    11.5    +      -       -      +
    130A  LYS*     3.0    26.2    -      -       +      +
    132A  ALA*     1.3    78.4    -      -       -      +
    134A  GLN*     1.3    60.3    +      -       +      +
    136A  ILE*     3.6     9.8    +      -       -      +
    137A  LEU*     3.0    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 134 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34A  VAL*     3.3    30.9    -      -       -      +
     38A  HIS*     3.7    24.5    +      -       -      -
    130A  LYS*     3.0    39.9    +      -       +      +
    131A  ASP*     3.0     8.8    +      -       -      +
    133A  VAL*     1.3    74.6    -      -       -      +
    135A  GLN*     1.3    61.3    +      -       +      +
    137A  LEU*     3.4    24.1    -      -       -      +
    138A  ARG*     2.9    44.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 135 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  ILE*     3.9    21.5    -      -       +      +
    103A  LEU*     5.0     3.6    -      -       -      +
    131A  ASP*     2.7    58.3    +      -       -      +
    132A  ALA*     3.3     9.9    -      -       -      +
    134A  GLN*     1.3    71.3    -      -       -      +
    136A  ILE*     1.3    55.0    +      -       -      +
    138A  ARG*     3.0    30.5    +      -       -      +
    139A  GLN*     2.8    45.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 136 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     27A  ILE*     3.7    30.5    -      -       +      -
     31A  LEU*     4.3    20.9    -      -       +      -
     54A  ILE*     4.6    11.7    -      -       +      -
     56A  ILE*     5.9     2.5    -      -       +      -
     83A  VAL*     4.4     7.2    -      -       +      -
     85A  ALA*     5.2     9.0    -      -       +      -
     98A  LEU*     4.4    14.4    -      -       +      -
    101A  ILE*     3.5    17.7    -      -       +      -
    132A  ALA      3.0    14.8    +      -       -      +
    133A  VAL*     3.8     9.0    -      -       -      +
    135A  GLN*     1.3    73.6    -      -       -      +
    137A  LEU*     1.3    58.7    +      -       -      +
    139A  GLN*     3.1    12.4    +      -       -      +
    140A  VAL*     2.8    48.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 137 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  SER*     4.6     8.1    -      -       -      +
     12A  LEU*     5.3     2.1    -      -       +      +
     31A  LEU*     5.1     3.1    -      -       +      +
     34A  VAL*     3.6    13.9    -      -       +      -
     35A  ILE*     4.0    28.5    -      -       +      -
     38A  HIS*     3.6    22.9    -      -       +      +
     39A  THR*     3.4    29.4    -      -       +      -
    133A  VAL      3.0    18.1    +      -       -      +
    134A  GLN*     3.4    27.8    -      -       -      +
    136A  ILE*     1.3    77.9    -      -       -      +
    138A  ARG*     1.3    57.7    +      -       -      +
    140A  VAL*     3.8     6.1    -      -       +      +
    141A  SER*     2.9    32.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 138 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  ASP*     5.7     2.4    +      -       -      -
    134A  GLN*     2.9    30.8    +      -       -      +
    135A  GLN*     3.0    29.6    +      -       -      +
    137A  LEU*     1.3    76.7    -      -       -      +
    139A  GLN*     1.3    59.0    +      -       +      +
    141A  SER*     3.1     8.6    +      -       -      +
    142A  ALA*     3.0    28.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 139 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98A  LEU*     3.4    38.3    -      -       +      +
     99A  GLN*     3.0    39.1    +      -       -      +
    100A  GLU      4.5     1.4    +      -       -      -
    101A  ILE*     4.3    19.8    -      -       -      +
    135A  GLN*     2.8    26.0    +      -       +      +
    136A  ILE*     3.1    14.1    +      -       -      +
    138A  ARG*     1.3    72.3    -      -       +      +
    140A  VAL*     1.3    54.8    +      -       -      +
    142A  ALA*     3.1     6.3    +      -       -      +
    143A  PHE*     2.8    44.3    +      -       +      -
    150A  HIS*     4.6     4.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 140 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  LEU*     3.9     7.0    -      -       +      -
     14A  PHE*     3.5    37.4    -      -       +      -
     54A  ILE*     4.1    29.8    -      -       +      -
     87A  LEU*     3.8    27.1    -      -       +      -
     98A  LEU*     5.2     3.1    -      -       +      -
    136A  ILE*     2.8    38.5    +      -       +      +
    137A  LEU*     3.8     6.5    -      -       +      +
    139A  GLN*     1.3    72.5    -      -       +      +
    141A  SER*     1.3    61.8    +      -       -      +
    143A  PHE*     3.3    12.1    +      -       -      +
    144A  THR      3.7     7.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 141 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     10A  SER      4.4    16.0    +      -       -      -
     11A  GLU      4.7     5.1    -      -       -      +
     12A  LEU*     4.0    24.7    -      -       -      +
     39A  THR*     5.6     0.4    -      -       -      -
    137A  LEU*     2.9    19.9    +      -       -      +
    138A  ARG*     3.1    16.1    +      -       -      +
    140A  VAL*     1.3    77.5    -      -       -      +
    142A  ALA*     1.3    56.0    +      -       -      +
    143A  PHE      3.5     0.2    -      -       -      -
    144A  THR*     3.0    22.2    -      -       -      +
    145A  SER*     4.3     3.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 142 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138A  ARG*     3.0    21.8    +      -       +      +
    139A  GLN*     3.1     7.4    +      -       -      +
    141A  SER*     1.3    75.8    -      -       -      +
    143A  PHE*     1.3    59.0    +      -       -      +
    144A  THR      3.2     2.0    -      -       -      -
    145A  SER*     2.9    12.6    +      -       -      -
    146A  ALA      2.8    23.6    +      -       -      -
    147A  GLY*     3.3    12.7    +      -       -      +
    149A  GLU*     4.2     7.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 143 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  PHE*     6.1     1.1    -      -       +      -
     87A  LEU*     3.7    26.0    -      -       +      -
     96A  ALA*     3.7    29.2    -      -       +      -
     97A  SER      5.1     3.4    -      -       -      -
     98A  LEU*     3.5    35.0    -      -       +      -
     99A  GLN*     5.6     1.3    -      -       +      -
    139A  GLN*     2.8    32.0    +      -       +      +
    140A  VAL      3.3     7.7    +      -       -      +
    142A  ALA*     1.3    73.6    -      -       -      +
    144A  THR*     1.3    60.4    +      -       -      +
    145A  SER      3.2     1.2    +      -       -      -
    146A  ALA*     3.5    24.9    +      -       -      +
    147A  GLY*     3.7    27.6    -      -       -      -
    148A  LEU*     4.2     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 144 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12A  LEU*     4.7     2.0    -      -       +      -
     13A  PRO*     3.1    36.1    -      -       +      +
     14A  PHE*     4.0    22.4    -      -       -      -
    140A  VAL      3.7     3.4    +      -       -      -
    141A  SER*     3.0    31.2    -      -       -      +
    143A  PHE*     1.3    77.8    -      -       -      +
    145A  SER*     1.3    64.8    +      -       -      +
----------------------------------------------------------
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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