Contacts of the helix formed by residues 85 - 107 (chain A) in PDB entry 2VM6


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 ASN 85 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  ILE*     3.9    14.9    -      -       +      +
     84A  ILE*     1.3    75.5    -      -       -      +
     86A  TRP*     1.3    63.2    +      -       -      +
     87A  GLY*     3.1     6.9    +      -       -      -
     88A  ARG*     2.9    36.5    +      -       -      +
     89A  ILE*     3.1    23.9    +      -       -      +
    133A  TRP*     3.7    15.5    -      -       +      -
    156B  GLY      3.9     0.5    -      -       -      +
    157B  ASP*     3.0    26.6    +      -       -      +
    160B  ASN*     3.5    31.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  ASN*     1.3    72.0    -      -       -      +
     87A  GLY*     1.3    65.9    +      -       -      +
     89A  ILE*     3.2    18.9    +      -       +      +
     90A  VAL*     2.9    25.8    +      -       -      +
    133A  TRP*     3.6    26.4    -      +       -      -
    134A  ILE*     3.8    32.8    -      -       +      -
    137A  ASN*     3.5    22.2    +      -       +      +
    139A  GLY      3.2    32.5    -      -       -      -
    140A  TRP*     3.8    24.5    -      +       -      -
    143A  GLY*     3.6    10.9    -      -       -      -
    144A  PHE*     3.6    33.7    -      +       +      -
    147A  LYS*     4.0    23.1    -      -       +      -
    148A  PHE*     3.6    19.7    -      +       +      -
   1150A  SO4      5.2     3.6    -      -       -      -
    160B  ASN*     3.7     1.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     85A  ASN*     3.1     3.8    +      -       -      -
     86A  TRP*     1.3    78.9    -      -       -      +
     88A  ARG*     1.3    61.2    +      -       -      +
     90A  VAL*     3.1    15.8    +      -       -      +
     91A  THR*     3.3    14.4    +      -       -      +
    148A  PHE*     4.1    11.3    -      -       -      -
    156B  GLY*     3.2    24.1    -      -       -      -
    159B  PHE*     4.7     4.2    -      -       -      +
    160B  ASN*     3.6    14.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  GLU*     3.3    25.0    +      -       -      +
     79A  PHE*     3.8    21.6    -      -       +      +
     81A  ASP*     2.7    42.2    +      -       -      -
     83A  ILE*     3.0    40.9    +      -       -      +
     85A  ASN*     2.9    26.7    +      -       -      +
     87A  GLY*     1.3    72.2    -      -       -      +
     89A  ILE*     1.3    65.6    +      -       -      +
     91A  THR*     2.5    26.7    +      -       -      -
     92A  ILE*     3.4     8.3    +      -       -      +
    153B  ARG*     3.3    20.3    -      -       -      +
    156B  GLY*     3.7     9.6    +      -       -      -
    157B  ASP*     2.8    38.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  LEU*     6.2     0.4    -      -       +      -
     79A  PHE*     5.3     0.9    -      -       +      -
     84A  ILE*     3.9    12.3    -      -       +      -
     85A  ASN      3.1    15.8    +      -       -      +
     86A  TRP*     3.2    20.8    +      -       +      +
     88A  ARG*     1.3    75.6    -      -       -      +
     90A  VAL*     1.3    66.4    +      -       +      +
     91A  THR      3.2     0.7    +      -       -      -
     92A  ILE*     3.2    28.0    +      -       +      +
     93A  PHE*     3.4    11.7    -      -       +      -
    126A  ILE*     5.0     4.5    -      -       +      -
    130A  THR*     4.1    16.2    -      -       +      +
    133A  TRP*     3.7    31.4    -      -       +      -
    134A  ILE*     4.0    13.0    -      -       +      -
    140A  TRP*     3.6    34.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37A  LEU*     4.1     3.8    -      -       +      -
     40A  VAL*     3.8    14.4    -      -       +      -
     41A  ALA*     3.5    33.7    -      -       +      +
     44A  VAL*     3.6    22.2    -      -       +      -
     86A  TRP      2.9    17.9    +      -       -      +
     87A  GLY*     3.1     9.8    +      -       -      +
     89A  ILE*     1.3    75.8    -      -       +      +
     91A  THR*     1.3    56.3    +      -       -      +
     93A  PHE*     3.0    26.6    +      -       -      +
     94A  ALA*     3.1    10.2    +      -       -      +
    144A  PHE*     3.7    28.5    -      -       +      -
    148A  PHE*     4.3    10.1    -      -       +      -
    159B  PHE*     6.1     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     44A  VAL*     4.0     8.5    -      -       +      -
     78A  GLU*     2.6    22.7    +      -       -      -
     87A  GLY      3.3    13.6    +      -       -      +
     88A  ARG      2.5    18.5    +      -       -      -
     90A  VAL*     1.3    73.5    -      -       -      +
     92A  ILE*     1.3    54.4    +      -       -      +
     94A  ALA*     3.7     9.2    -      -       -      +
     95A  PHE*     2.8    35.9    +      -       -      +
    152B  LEU*     3.3    37.5    -      -       -      +
    155B  ILE*     3.8    12.8    -      -       +      -
    156B  GLY*     3.6    12.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  PHE*     3.7    29.7    -      -       +      -
     75A  MET*     3.7    21.5    -      -       +      -
     79A  PHE*     3.9    22.4    -      -       +      -
     88A  ARG      3.6     9.0    -      -       -      +
     89A  ILE*     3.4    25.1    -      -       +      +
     91A  THR*     1.3    78.3    +      -       -      +
     93A  PHE*     1.3    55.7    +      -       -      +
     95A  PHE*     3.4     2.1    +      -       -      +
     96A  GLU*     3.0    27.1    +      -       -      +
    122A  VAL*     3.7    15.5    -      -       +      -
    125A  PHE*     4.0    13.2    -      -       +      -
    126A  ILE*     3.8    27.1    -      -       +      -
    130A  THR*     4.6     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      9A  ILE*     4.7     2.7    -      -       +      -
     12A  LEU*     4.2     7.4    -      -       +      -
     13A  ALA*     3.6    32.5    -      -       +      -
     16A  TYR*     3.1    19.6    -      -       +      -
     37A  LEU*     3.7    33.7    -      -       +      -
     41A  ALA*     4.1    13.2    -      -       +      -
     89A  ILE*     3.4    18.2    -      -       +      -
     90A  VAL      3.0     6.9    +      -       -      +
     92A  ILE*     1.3    75.6    -      -       -      +
     94A  ALA*     1.3    64.2    +      -       -      +
     96A  GLU*     2.9    38.0    -      -       -      +
     97A  GLY      3.0     6.2    +      -       -      -
    122A  VAL*     4.9     0.9    -      -       +      -
    126A  ILE*     3.5    29.6    -      -       +      -
    140A  TRP*     3.7    27.6    -      +       -      -
----------------------------------------------------------
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Residues in contact with ALA 94 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  TYR*     4.1     1.7    -      -       -      -
     41A  ALA*     3.6    16.2    -      -       -      +
     44A  VAL*     3.5    33.0    -      -       +      -
     45A  GLN*     3.4    28.4    -      -       -      +
     48A  VAL*     5.4     1.6    -      -       +      -
     90A  VAL      3.1     8.5    +      -       -      +
     91A  THR*     3.7     6.3    -      -       -      +
     93A  PHE*     1.3    74.6    -      -       -      +
     95A  PHE*     1.3    62.3    +      -       -      +
     97A  GLY      3.2     2.1    +      -       -      -
     98A  ILE*     3.1    20.0    +      -       -      +
    152B  LEU*     5.4     3.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  LEU*     4.9     3.6    -      -       +      -
     70A  LEU*     4.3     5.6    -      -       +      -
     71A  PHE*     3.9    26.7    -      +       -      -
     74A  VAL*     3.9    32.5    -      -       +      -
     75A  MET*     4.3     2.5    -      -       +      -
     91A  THR      2.8    21.6    +      -       -      +
     92A  ILE*     3.8     5.6    -      -       -      +
     94A  ALA*     1.3    75.0    -      -       -      +
     96A  GLU*     1.3    62.3    +      -       -      +
     98A  ILE*     3.1    30.7    +      -       +      +
     99A  LEU*     3.0    48.8    +      -       +      +
    148B  ILE*     3.6    37.7    -      -       +      -
    152B  LEU*     3.8    14.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13A  ALA*     2.9    42.0    -      -       -      +
     16A  TYR*     3.6    10.5    -      -       +      +
     17A  LEU*     3.7    18.8    -      -       -      +
     71A  PHE*     5.1     0.4    -      -       -      -
     92A  ILE      3.0    10.2    +      -       -      +
     93A  PHE*     2.9    36.5    -      -       -      +
     95A  PHE*     1.3    75.8    -      -       -      +
     97A  GLY*     1.3    56.2    +      -       -      +
     99A  LEU*     3.2    12.2    +      -       -      +
    100A  ILE*     2.9    29.9    +      -       -      +
    118A  ILE*     4.0     9.2    -      -       +      +
    119A  SER*     4.0     5.0    +      -       -      -
    122A  VAL*     3.6    33.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16A  TYR*     4.0     8.5    -      -       -      -
     17A  LEU*     5.9     0.7    -      -       -      -
     20A  VAL*     3.9     5.5    -      -       -      +
     45A  GLN*     3.4    23.9    +      -       -      -
     93A  PHE      3.0    12.7    +      -       -      -
     95A  PHE      3.2     0.2    -      -       -      -
     96A  GLU*     1.3    78.0    -      -       -      +
     98A  ILE*     1.3    60.0    +      -       -      +
    100A  ILE*     3.3    25.2    -      -       -      +
    101A  LYS*     3.3    15.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     45A  GLN*     3.8     8.5    -      -       +      +
     48A  VAL*     3.5    33.4    -      -       +      -
     49A  GLU*     3.7    32.8    -      -       +      +
     52A  LEU*     5.7     0.2    -      -       +      -
     56A  LEU*     4.0    27.6    -      -       +      -
     94A  ALA      3.1    14.5    +      -       -      +
     95A  PHE*     3.1    28.1    +      -       +      +
     97A  GLY*     1.3    74.4    -      -       -      +
     99A  LEU*     1.3    65.6    +      -       +      +
    101A  LYS*     3.5     4.2    +      -       -      +
    102A  LYS*     3.2    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  VAL*     4.1    24.3    -      -       +      +
     67A  ALA*     3.9    22.4    -      -       +      +
     70A  LEU*     4.1    11.2    -      -       +      -
     71A  PHE*     3.8    35.7    -      -       +      -
     95A  PHE*     3.0    46.9    +      -       +      +
     96A  GLU*     3.2    10.0    +      -       -      +
     98A  ILE*     1.3    75.7    -      -       +      +
    100A  ILE*     1.3    67.2    +      -       -      +
    102A  LYS*     3.9     4.2    -      -       +      +
    103A  LEU*     3.0    25.7    +      -       -      +
    118A  ILE*     4.8     7.3    -      -       +      +
    121A  PHE*     4.6     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17A  LEU*     3.7    37.5    -      -       +      -
     20A  VAL*     4.1    15.3    -      -       +      -
     21A  LEU*     4.0    14.4    -      -       +      -
     96A  GLU      2.9    14.7    +      -       -      +
     97A  GLY*     3.3    20.9    -      -       -      +
     99A  LEU*     1.3    78.5    -      -       -      +
    101A  LYS*     1.3    59.8    +      -       -      +
    103A  LEU*     4.3     2.9    -      -       +      -
    104A  LEU*     3.2    21.6    +      -       -      +
    115A  TYR*     3.4    47.6    -      -       +      -
    118A  ILE*     3.5    16.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     20A  VAL*     4.0    17.0    -      -       +      +
     21A  LEU*     5.0     6.5    -      -       +      -
     45A  GLN*     3.5    16.5    -      -       -      +
     49A  GLU*     2.6    40.2    +      -       -      +
     97A  GLY      3.3     9.4    +      -       -      +
     98A  ILE*     3.9     5.2    -      -       -      +
     99A  LEU      3.2     0.2    -      -       -      -
    100A  ILE*     1.3    75.4    -      -       +      +
    102A  LYS*     1.3    61.6    +      -       +      +
    104A  LEU*     3.6     8.3    +      -       -      +
    105A  ARG*     3.0    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  LEU*     2.9    37.3    +      -       +      +
     57A  ASP*     4.8     4.0    +      -       -      +
     59A  VAL*     3.1    36.3    +      -       +      -
     61A  VAL*     3.7    24.9    -      -       +      +
     98A  ILE*     3.2    33.3    +      -       +      +
     99A  LEU*     4.1     2.2    -      -       +      +
    101A  LYS*     1.3    76.1    -      -       +      +
    103A  LEU*     1.3    67.6    +      -       -      +
    105A  ARG*     3.8     6.0    -      -       -      +
    106A  GLN*     3.3    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 103 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  VAL*     3.4    24.7    -      -       +      +
     62A  VAL      3.8     4.7    -      -       -      +
     63A  SER*     3.7    30.3    -      -       -      +
     64A  VAL*     3.9    24.7    -      -       +      +
     67A  ALA*     5.2     0.4    -      -       +      -
     99A  LEU      3.0    19.1    +      -       -      +
    100A  ILE*     3.7     5.4    -      -       +      +
    102A  LYS*     1.3    78.6    -      -       -      +
    104A  LEU*     1.3    53.1    +      -       -      +
    106A  GLN*     3.2     1.7    +      -       -      +
    107A  GLN*     2.7    48.4    +      -       -      +
    115A  TYR*     3.5    31.6    -      -       +      -
    118A  ILE*     4.0    12.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 104 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  LEU*     3.5    35.0    -      -       +      -
    100A  ILE*     3.2    14.0    +      -       +      +
    101A  LYS*     4.3     5.4    -      -       -      +
    103A  LEU*     1.3    75.0    -      -       -      +
    105A  ARG*     1.3    65.7    +      -       -      +
    106A  GLN      3.2     1.3    -      -       -      -
    107A  GLN*     4.0    13.1    +      -       -      +
    110A  PRO*     5.8     7.2    -      -       +      +
    112A  VAL*     5.2     4.3    -      -       +      -
    115A  TYR*     2.9    43.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 105 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  LYS      3.0    20.8    +      -       -      +
    102A  LYS*     3.8     8.5    -      -       -      +
    104A  LEU*     1.3    80.5    -      -       -      +
    106A  GLN*     1.3    61.9    +      -       +      +
    107A  GLN      4.8     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 106 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  ASN*     5.2     5.6    -      -       -      +
     61A  VAL      3.0    28.0    -      -       -      +
     62A  VAL*     2.7    50.6    -      -       -      +
    102A  LYS      3.3    11.0    +      -       -      +
    103A  LEU      3.2     0.4    +      -       -      -
    105A  ARG*     1.3    82.9    -      -       +      +
    107A  GLN*     1.3    68.8    +      -       -      +
    108A  ILE*     3.4     6.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 107 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     62A  VAL      4.8     6.4    +      -       -      +
     63A  SER*     5.6     1.4    -      -       -      +
     64A  VAL*     5.2     4.9    -      -       -      +
    103A  LEU*     2.7    40.1    +      -       +      +
    104A  LEU*     4.0    10.4    -      -       -      +
    105A  ARG      3.7     1.6    -      -       -      +
    106A  GLN*     1.3    80.3    +      -       -      +
    108A  ILE*     1.3    66.3    +      -       +      +
    109A  ALA      3.7    20.7    +      -       -      +
    110A  PRO*     3.8     9.6    -      -       +      +
    111A  ASP*     3.3    20.2    +      -       -      +
    114A  THR*     4.8     4.2    +      -       -      -
    115A  TYR*     2.6    38.6    +      -       -      -
----------------------------------------------------------
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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