Contacts of the helix formed by residues 109 - 133 (chain A) in PDB entry 2FY4


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 GLY 109 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  PHE      3.9     3.1    -      -       -      +
    108A  PRO*     1.3    75.2    -      -       -      +
    110A  THR*     1.3    66.8    -      -       -      -
    111A  ASP*     3.1     4.5    -      -       -      -
    112A  ASP*     2.7    33.7    +      -       -      +
    113A  GLN      3.6     2.3    +      -       -      -
    314A  ARG*     3.3     9.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 110 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  GLY*     1.3    71.0    -      -       -      -
    111A  ASP*     1.3    66.0    +      -       -      +
    113A  GLN*     3.0    15.9    +      -       -      +
    114A  LEU*     3.0    40.1    +      -       +      +
    219A  VAL*     4.7    17.3    -      -       +      -
    314A  ARG*     3.1    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 111 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    109A  GLY*     3.1     2.1    -      -       -      -
    110A  THR*     1.3    80.0    -      -       -      +
    112A  ASP*     1.3    56.9    +      -       -      +
    114A  LEU*     3.3     3.9    +      -       -      +
    115A  ARG*     2.8    58.4    +      -       -      +
    212A  PHE*     3.4    13.2    -      -       +      -
    216A  ARG*     3.0    46.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 112 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106A  HIS      4.6     0.7    -      -       -      +
    107A  PHE*     3.8    24.7    -      -       +      -
    108A  PRO*     3.1    18.8    -      -       +      +
    109A  GLY*     2.7    35.8    +      -       -      +
    111A  ASP*     1.3    78.6    -      -       -      +
    113A  GLN*     1.3    62.4    +      -       -      +
    115A  ARG*     3.4    19.1    +      -       -      +
    116A  PHE*     3.2    21.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 113 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    107A  PHE*     3.5    29.5    -      -       +      -
    109A  GLY      3.6     1.4    +      -       -      -
    110A  THR*     3.0    21.5    +      -       -      +
    112A  ASP*     1.3    79.7    -      -       -      +
    114A  LEU*     1.3    65.2    +      -       +      +
    116A  PHE*     3.3     4.9    +      -       -      +
    117A  ALA*     3.0    25.1    +      -       -      +
    219A  VAL*     5.6     1.4    -      -       -      +
    272A  LEU*     3.9    20.1    -      -       +      +
    273A  ASP      3.8     5.1    +      -       -      -
    312A  VAL*     2.8    36.2    +      -       +      +
    313A  GLY*     3.8     0.4    -      -       -      -
    314A  ARG*     3.0    41.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 114 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110A  THR*     3.0    27.9    +      -       +      +
    111A  ASP*     3.3    11.4    +      -       -      +
    113A  GLN*     1.3    81.9    -      -       -      +
    115A  ARG*     1.3    59.3    +      -       -      +
    117A  ALA*     4.3     2.7    -      -       -      -
    118A  ALA*     2.8    29.6    +      -       -      +
    212A  PHE*     3.8    12.5    -      -       +      -
    215A  LEU*     3.4    18.2    -      -       +      +
    216A  ARG*     3.8    40.4    -      -       +      +
    219A  VAL*     3.8    22.7    -      -       +      -
    272A  LEU*     3.9    24.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 115 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111A  ASP*     2.8    70.4    +      -       -      +
    112A  ASP*     3.5    21.6    +      -       -      +
    113A  GLN      3.3     0.2    -      -       -      -
    114A  LEU*     1.3    70.4    -      -       -      +
    116A  PHE*     1.3    66.6    +      -       -      +
    118A  ALA*     3.2     5.3    +      -       -      +
    119A  SER*     3.0    24.1    +      -       -      -
    208A  GLU*     4.1     3.5    -      -       -      +
    212A  PHE*     3.8    26.7    -      -       +      -
    216A  ARG*     5.3     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 116 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102A  PHE*     4.8     3.4    -      +       -      -
    105A  GLN*     3.3    37.7    -      -       +      -
    107A  PHE*     3.6    20.9    -      +       +      -
    112A  ASP      3.2     6.2    +      -       -      +
    113A  GLN      3.4     9.2    -      -       -      +
    115A  ARG*     1.3    79.6    -      -       -      +
    117A  ALA*     1.3    56.5    +      -       -      +
    119A  SER*     3.1     5.9    +      -       -      -
    120A  LEU*     2.8    47.2    +      -       +      +
    312A  VAL*     3.6    20.4    -      -       +      -
    318A  CYS*     3.8    20.2    -      -       +      -
    340A  LEU*     4.7    11.2    -      -       +      -
    343A  MET*     3.4    32.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 117 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    113A  GLN      3.0    13.1    +      -       -      +
    114A  LEU*     3.7     5.4    -      -       -      +
    115A  ARG      3.3     0.2    -      -       -      -
    116A  PHE*     1.3    79.7    -      -       -      +
    118A  ALA*     1.3    57.5    +      -       -      +
    120A  LEU*     3.4     7.3    +      -       -      +
    121A  ILE*     2.9    35.2    +      -       -      +
    215A  LEU*     3.7    14.8    -      -       +      -
    270A  VAL*     4.4     8.5    -      -       +      -
    272A  LEU*     4.2    21.5    -      -       +      -
    312A  VAL*     4.2    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 118 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114A  LEU      2.8    18.1    +      -       -      +
    115A  ARG*     3.5     6.7    -      -       -      +
    117A  ALA*     1.3    76.6    -      -       -      +
    119A  SER*     1.3    63.3    +      -       -      +
    121A  ILE*     3.3     3.3    +      -       -      -
    122A  SER*     3.0    24.3    +      -       -      -
    208A  GLU*     3.6    27.6    -      -       +      +
    211A  LEU*     3.5    13.0    -      -       +      +
    212A  PHE*     3.8    20.2    -      -       +      +
    215A  LEU*     3.7     6.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 119 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    115A  ARG      3.0    10.1    +      -       -      -
    116A  PHE*     3.5     9.0    -      -       -      -
    118A  ALA*     1.3    75.3    -      -       -      +
    120A  LEU*     1.3    58.1    +      -       -      +
    122A  SER*     3.1     4.4    +      -       -      -
    123A  GLY*     2.8    26.7    +      -       -      -
    208A  GLU*     2.9    32.1    +      -       -      -
    342A  HIS*     4.6     4.0    +      -       -      -
    343A  MET*     3.3    35.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 120 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102A  PHE*     4.5    13.0    -      -       +      -
    116A  PHE*     2.8    29.4    +      -       +      +
    117A  ALA*     3.6     5.8    -      -       -      +
    119A  SER*     1.3    77.7    -      -       -      +
    121A  ILE*     1.3    59.1    +      -       +      +
    123A  GLY*     3.1     3.2    +      -       -      -
    124A  VAL*     2.9    43.3    +      -       +      +
    270A  VAL*     5.9     2.9    -      -       +      -
    310A  PHE*     3.9    35.0    -      -       +      -
    311A  VAL      5.5     0.7    -      -       -      +
    312A  VAL*     3.9    25.4    -      -       +      -
    339A  LEU*     4.2    10.5    -      -       +      +
    340A  LEU*     5.7     0.4    -      -       +      -
    343A  MET*     3.8    22.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 121 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    117A  ALA      2.9    27.0    +      -       -      +
    118A  ALA*     3.3     5.6    +      -       -      +
    120A  LEU*     1.3    76.0    -      -       +      +
    122A  SER*     1.3    62.4    +      -       -      +
    124A  VAL*     3.1    11.3    +      -       +      +
    125A  LEU*     3.0    30.8    +      -       +      +
    186A  VAL*     4.4    12.1    -      -       +      -
    197A  LEU*     4.1    22.9    -      -       +      -
    199A  VAL*     4.0    25.6    -      -       +      -
    211A  LEU*     4.2    13.9    -      -       +      -
    215A  LEU*     4.5    12.8    -      -       +      -
    270A  VAL*     3.7    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 122 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118A  ALA      3.0    15.5    +      -       -      -
    119A  SER*     3.3    11.9    -      -       -      -
    121A  ILE*     1.3    72.3    -      -       -      +
    123A  GLY*     1.3    68.1    +      -       -      +
    125A  LEU*     3.0    19.0    +      -       -      +
    126A  SER      3.0    11.1    +      -       -      -
    205A  ARG*     3.3    17.6    +      -       -      +
    206A  LEU      4.8     2.1    +      -       -      -
    207A  SER      4.7     0.3    -      -       -      -
    208A  GLU*     3.5    23.9    +      -       -      +
    211A  LEU*     3.3    16.0    -      -       -      +
    342A  HIS*     4.3     7.6    -      -       -      -
----------------------------------------------------------
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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  SER      2.8    12.4    +      -       -      -
    120A  LEU*     3.1     4.5    +      -       -      -
    122A  SER*     1.3    76.4    -      -       -      +
    124A  VAL*     1.3    62.1    +      -       -      +
    126A  SER*     3.0     5.3    +      -       -      -
    127A  TYR*     2.9    24.3    +      -       -      +
    338A  HIS*     5.6     0.5    +      -       -      -
    339A  LEU*     3.6    14.3    -      -       -      +
    342A  HIS*     3.5    29.9    -      -       -      +
    343A  MET*     5.7     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 124 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120A  LEU*     2.9    35.9    +      -       +      +
    121A  ILE*     3.3    13.0    -      -       +      +
    123A  GLY*     1.3    75.5    -      -       -      +
    125A  LEU*     1.3    61.5    +      -       +      +
    127A  TYR*     3.4     2.3    +      -       -      +
    128A  LYS*     2.9    29.0    +      -       +      +
    159A  PHE*     3.7    25.1    -      -       +      -
    267A  ILE*     4.2    17.5    -      -       +      -
    268A  CYS*     4.6     9.4    -      -       -      -
    270A  VAL*     6.5     0.7    -      -       +      -
    310A  PHE*     4.2    13.2    -      -       +      -
    339A  LEU*     3.6    21.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 125 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    121A  ILE*     3.0    25.4    +      -       +      +
    122A  SER*     3.4    13.7    -      -       -      +
    124A  VAL*     1.3    80.5    -      -       +      +
    126A  SER*     1.3    57.1    +      -       -      +
    128A  LYS*     3.5     8.1    +      -       +      +
    129A  ALA*     3.0    25.1    +      -       -      +
    186A  VAL*     5.3     0.4    -      -       +      -
    199A  VAL*     3.5    49.6    -      -       +      +
    200A  VAL*     4.4     7.6    -      -       +      -
    205A  ARG*     3.7    35.0    +      -       +      +
    206A  LEU      4.7     5.8    -      -       -      +
    211A  LEU*     4.7     5.4    -      -       +      -
    267A  ILE*     4.1    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 126 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122A  SER      3.0     5.3    +      -       -      -
    123A  GLY      3.0     8.7    +      -       -      -
    125A  LEU*     1.3    73.7    -      -       -      +
    127A  TYR*     1.3    68.0    +      -       -      +
    129A  ALA*     3.2     5.4    +      -       -      +
    130A  LEU*     3.0    28.9    +      -       -      +
    205A  ARG*     2.9    37.4    +      -       -      +
    338A  HIS*     4.9     4.0    -      -       -      -
    342A  HIS*     3.4    24.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 127 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123A  GLY      2.9    17.0    +      -       -      +
    124A  VAL      3.6     4.7    -      -       -      +
    126A  SER*     1.3    79.6    +      -       -      +
    128A  LYS*     1.3    62.0    +      -       -      +
    130A  LEU*     3.1    15.0    +      -       +      +
    131A  LEU*     3.0    51.2    +      -       +      +
    136A  ILE*     3.4    16.1    -      -       +      +
    155A  TYR*     3.3    27.9    -      -       -      -
    158A  LEU*     4.0     4.9    -      -       +      -
    159A  PHE*     4.0     6.3    -      +       +      -
    334A  GLN*     4.5     1.8    -      -       -      +
    335A  CYS*     3.6    37.5    +      -       +      -
    338A  HIS*     3.4    53.2    -      +       +      +
    339A  LEU*     3.9    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 128 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    124A  VAL*     2.9    18.3    +      -       +      +
    125A  LEU*     3.8     8.7    -      -       +      +
    127A  TYR*     1.3    73.9    -      -       -      +
    129A  ALA*     1.3    57.9    +      -       -      +
    131A  LEU*     3.6    11.3    -      -       +      +
    132A  ASP*     2.7    73.5    +      -       -      +
    159A  PHE*     4.2    28.0    -      -       +      -
    160A  SER*     6.6     0.4    -      -       -      -
    180A  MET*     4.7     8.5    -      -       -      +
    184A  GLU*     2.8    35.0    +      -       -      +
    267A  ILE*     4.2    28.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 129 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    125A  LEU      3.0    14.4    +      -       -      +
    126A  SER*     3.3    13.2    -      -       -      +
    127A  TYR      3.1     0.4    -      -       -      -
    128A  LYS*     1.3    74.0    -      -       -      +
    130A  LEU*     1.3    59.2    +      -       +      +
    132A  ASP*     3.3     7.1    +      -       -      +
    133A  SER*     2.7    35.3    +      -       -      -
    205A  ARG*     4.8     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 130 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126A  SER*     3.0    19.9    +      -       -      +
    127A  TYR*     3.3    12.6    -      -       +      +
    129A  ALA*     1.3    78.0    -      -       +      +
    131A  LEU*     1.3    59.2    +      -       +      +
    133A  SER*     3.0     9.6    +      -       -      +
    135A  SER*     2.8    49.4    +      -       -      +
    136A  ILE*     3.8    12.9    +      -       +      +
    338A  HIS*     3.6    33.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 131 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    127A  TYR*     3.0    33.6    +      -       +      +
    128A  LYS*     3.6     8.5    -      -       +      +
    129A  ALA      3.1     0.2    -      -       -      -
    130A  LEU*     1.3    73.6    -      -       +      +
    132A  ASP*     1.3    64.0    +      -       -      +
    133A  SER      3.0     1.8    -      -       -      -
    134A  HIS*     2.9    17.8    +      -       -      +
    136A  ILE*     4.0    37.7    -      -       +      -
    155A  TYR*     3.9    30.3    -      -       +      +
    156A  TYR*     3.3    33.8    -      -       +      -
    158A  LEU*     4.4     0.4    -      -       +      -
    159A  PHE*     3.7    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 132 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128A  LYS*     2.7    61.4    +      -       -      +
    129A  ALA*     3.9     7.5    -      -       -      +
    131A  LEU*     1.3    76.4    -      -       -      +
    133A  SER*     1.3    58.5    +      -       -      +
    134A  HIS*     3.3    13.9    +      -       -      -
    156A  TYR*     5.3     2.0    -      -       -      -
    180A  MET*     5.0    14.8    -      -       +      +
    184A  GLU*     5.3     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 133 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129A  ALA      2.7    22.0    +      -       -      -
    130A  LEU*     3.0     9.0    +      -       -      +
    132A  ASP*     1.3    76.5    -      -       -      +
    134A  HIS*     1.3    74.5    +      -       -      +
    135A  SER*     2.7    24.8    +      -       -      -
----------------------------------------------------------
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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