Contacts of the helix formed by residues 78 - 104 (chain A) in PDB entry 3V2W


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 ARG 78 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75A  LYS      4.1     9.8    +      -       -      +
     76A  PHE      3.0     1.8    -      -       -      -
     77A  HIS*     1.3    78.3    -      -       -      +
     79A  PRO*     1.4    76.3    -      -       +      +
     80A  MET*     3.3     3.6    -      -       +      +
     81A  TYR*     3.1    36.0    +      -       +      +
     82A  TYR*     3.2    12.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PRO 79 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77A  HIS      4.5     2.2    -      -       -      +
     78A  ARG*     1.4    84.5    -      -       +      +
     80A  MET*     1.4    62.7    +      -       -      +
     82A  TYR*     3.1    27.4    +      -       +      +
     83A  PHE*     3.3    22.5    -      -       +      -
    141A  GLU*     5.8     1.6    -      -       +      -
    156A  ASN*     5.2    10.8    -      -       -      +
    157A  ASN*     5.3     6.3    -      -       -      +
    160A  LEU*     3.7    24.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 80 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78A  ARG*     3.2     3.1    +      -       +      +
     79A  PRO*     1.4    77.9    -      -       -      +
     81A  TYR*     1.3    80.1    +      -       +      +
     83A  PHE*     3.1    24.0    +      -       -      +
     84A  ILE*     3.2    37.8    +      -       +      +
    138A  ILE*     4.3    13.0    -      -       +      -
    141A  GLU*     4.6    12.9    -      -       +      +
    142A  ARG*     3.4    41.1    -      -       -      +
    254A  LEU*     3.6    35.9    -      -       +      -
    258A  VAL*     4.1    13.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 81 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  ILE*     3.6    26.3    -      -       +      +
     75A  LYS      4.1     6.3    -      -       -      -
     76A  PHE*     3.2    75.7    -      +       +      +
     78A  ARG*     3.1    27.1    +      -       +      +
     80A  MET*     1.3    92.2    -      -       +      +
     82A  TYR*     1.4    57.2    +      -       -      +
     84A  ILE*     3.3     9.8    +      -       +      +
     85A  GLY*     3.0    24.4    +      -       -      -
    254A  LEU*     4.1    15.8    -      -       +      +
    317A  GLU*     4.1    15.9    +      -       -      -
    318A  MET*     3.7    25.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 82 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  ILE*     5.3     7.2    -      -       +      -
     76A  PHE      5.4     1.3    -      -       -      -
     77A  HIS*     3.2    54.5    +      +       -      +
     78A  ARG      3.2    21.7    +      -       -      -
     79A  PRO*     3.1    18.0    +      -       +      +
     81A  TYR*     1.4    76.7    -      -       +      +
     83A  PHE*     1.4    58.2    +      -       +      +
     85A  GLY*     3.6     2.1    +      -       -      +
     86A  ASN*     3.1    26.0    +      -       -      +
    157A  ASN*     5.9     2.5    -      -       +      -
    160A  LEU*     4.4    15.3    -      -       +      -
    161A  PHE*     3.6    36.4    -      +       -      -
    164A  ILE*     4.0    20.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 83 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79A  PRO*     3.3    29.6    -      -       +      -
     80A  MET*     3.1    13.3    +      -       -      +
     82A  TYR*     1.4    74.2    -      -       +      +
     84A  ILE*     1.4    59.0    +      -       -      +
     86A  ASN*     3.5     8.6    +      -       +      +
     87A  LEU*     3.2    26.2    +      -       -      +
    134A  SER*     4.1     6.0    -      -       -      +
    137A  ALA*     3.5    36.6    -      -       +      -
    138A  ILE*     3.6    20.8    -      -       +      +
    140A  ILE*     6.2     1.3    -      -       +      -
    141A  GLU*     3.7    20.0    -      -       +      -
    160A  LEU*     3.6    33.0    -      -       +      -
    163A  LEU*     4.4    20.2    -      -       +      -
    164A  ILE*     4.5    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 84 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  VAL*     4.6     1.3    -      -       +      -
     70A  ILE*     4.0    14.4    -      -       +      -
     80A  MET*     3.2    46.8    +      -       +      +
     81A  TYR*     3.5    13.7    -      -       +      +
     83A  PHE*     1.4    74.5    -      -       -      +
     85A  GLY*     1.3    58.7    +      -       -      +
     87A  LEU*     3.4     7.7    -      -       -      +
     88A  ALA*     3.1    24.6    +      -       -      +
    138A  ILE*     3.8    21.8    -      -       +      -
    258A  VAL*     4.9     7.6    -      -       +      -
    311A  TYR*     3.4    35.7    +      -       +      +
    318A  MET*     4.0    20.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 85 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66A  VAL*     4.9     0.9    -      -       -      -
     67A  LEU*     3.2    29.7    -      -       -      +
     70A  ILE*     4.4    11.4    -      -       -      -
     81A  TYR      3.0    15.5    +      -       -      -
     82A  TYR*     3.9     1.8    -      -       -      -
     83A  PHE      3.3     0.2    -      -       -      -
     84A  ILE*     1.3    74.3    -      -       -      +
     86A  ASN*     1.4    54.0    +      -       -      +
     88A  ALA*     3.0     6.0    +      -       -      +
     89A  LEU*     2.8    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 86 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     82A  TYR      3.1    17.4    +      -       -      +
     83A  PHE*     3.8     8.7    -      -       -      +
     84A  ILE      3.5     0.2    -      -       -      -
     85A  GLY*     1.4    74.2    -      -       -      +
     87A  LEU*     1.4    52.9    +      -       -      +
     89A  LEU*     3.3    13.2    +      -       -      +
     90A  SER*     2.8    36.0    +      -       -      -
    134A  SER*     3.5    17.8    +      -       -      +
    164A  ILE*     3.5    32.1    -      -       +      +
    167A  CYS*     4.0    16.0    -      -       -      +
    168A  TRP*     2.7    33.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 87 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  ASN*     5.7     0.2    -      -       -      +
     83A  PHE      3.2    13.6    +      -       -      +
     84A  ILE*     3.4     9.4    -      -       -      +
     86A  ASN*     1.4    75.2    -      -       -      +
     88A  ALA*     1.4    60.6    +      -       +      +
     90A  SER*     3.3     7.4    +      -       -      -
     91A  ASP*     3.0    30.4    +      -       -      +
    131A  SER*     4.4     6.5    -      -       -      +
    134A  SER*     3.6    18.3    +      -       -      -
    135A  LEU*     3.7    37.0    -      -       +      -
    138A  ILE*     3.9    15.9    -      -       +      -
    261A  VAL*     4.5     6.3    -      -       +      -
    265A  PHE*     6.5     0.7    -      -       +      -
    307A  ASN*     3.4    31.0    -      -       +      +
    311A  TYR*     3.9    18.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 88 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63A  ASN*     3.5    31.9    -      -       +      +
     66A  VAL*     3.8    26.7    -      -       +      -
     67A  LEU*     4.3     3.6    -      -       +      -
     84A  ILE      3.1    12.8    +      -       -      +
     85A  GLY*     3.0    10.4    +      -       -      +
     87A  LEU*     1.4    77.3    -      -       +      +
     89A  LEU*     1.4    55.3    +      -       -      +
     91A  ASP*     3.6     1.7    -      -       -      +
     92A  LEU*     2.7    35.6    +      -       -      +
    311A  TYR*     5.9     1.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 89 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     67A  LEU*     4.0    20.6    -      -       +      +
     85A  GLY      2.8    12.9    +      -       -      +
     86A  ASN*     3.4    22.9    -      -       -      +
     88A  ALA*     1.4    72.8    -      -       -      +
     90A  SER*     1.3    60.3    +      -       -      +
     92A  LEU*     3.6    14.2    -      -       +      +
     93A  LEU*     3.0    51.8    +      -       +      +
    164A  ILE*     6.3     0.7    -      -       +      -
    168A  TRP*     4.4    14.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 90 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  ASN*     2.8    20.0    +      -       -      -
     87A  LEU      3.3     9.6    +      -       -      -
     89A  LEU*     1.3    77.3    -      -       -      +
     91A  ASP*     1.4    56.8    +      -       -      +
     93A  LEU*     3.4     2.3    +      -       -      +
     94A  ALA*     3.0    26.2    +      -       -      +
    127A  ALA*     3.8    11.7    -      -       -      +
    130A  ALA*     3.3    25.3    -      -       -      +
    131A  SER*     3.4    27.6    -      -       -      -
    134A  SER*     3.9     1.7    +      -       -      -
    168A  TRP*     3.4    13.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 91 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ILE*     4.1     1.6    -      -       -      +
     63A  ASN*     4.0    10.5    +      -       -      +
     87A  LEU*     3.0    21.8    +      -       -      +
     88A  ALA      3.6     4.0    -      -       -      +
     90A  SER*     1.4    71.9    -      -       -      +
     92A  LEU*     1.4    58.2    +      -       -      +
     94A  ALA*     3.5    10.1    -      -       -      +
     95A  GLY*     3.2    20.4    +      -       -      -
    131A  SER*     3.1    22.9    +      -       -      -
    265A  PHE*     5.7     1.7    -      -       -      -
    303A  ASN*     5.4     4.0    +      -       -      -
    304A  SER*     3.6    44.0    +      -       -      +
    307A  ASN*     2.8    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 92 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  ILE      5.1     1.1    -      -       -      -
     60A  ILE*     3.4    27.5    -      -       +      +
     63A  ASN*     4.1     8.7    -      -       +      +
     64A  ILE*     3.8    32.3    -      -       +      +
     67A  LEU*     3.9    22.9    -      -       +      -
     88A  ALA      2.7    20.7    +      -       -      +
     89A  LEU*     3.6    13.2    -      -       +      +
     90A  SER      3.3     0.2    -      -       -      -
     91A  ASP*     1.4    72.2    -      -       -      +
     93A  LEU*     1.3    80.2    +      -       +      +
     95A  GLY      3.3     2.4    +      -       -      -
     96A  VAL*     3.3    31.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 93 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  LEU*     3.0    28.4    +      -       +      +
     90A  SER      3.9     3.6    -      -       -      +
     92A  LEU*     1.3    86.4    -      -       +      +
     94A  ALA*     1.4    54.9    +      -       -      +
     96A  VAL*     3.3    13.5    +      -       +      +
     97A  ALA*     2.8    35.8    +      -       -      +
    127A  ALA*     4.8     5.4    -      -       +      -
    168A  TRP*     3.8    32.5    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
     90A  SER      3.0    17.5    +      -       -      +
     91A  ASP*     3.5    15.3    -      -       -      +
     92A  LEU      3.2     0.2    -      -       -      -
     93A  LEU*     1.4    75.9    -      -       -      +
     95A  GLY*     1.3    51.8    +      -       -      +
     97A  ALA*     3.4     5.0    +      -       -      +
     98A  TYR*     2.8    37.5    +      -       -      +
    124A  MET*     4.3     9.4    -      -       +      +
    127A  ALA*     3.8    19.9    -      -       +      +
    301A  VAL*     6.0     1.8    -      -       -      -
    304A  SER*     3.9    12.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 95 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  CYS*     3.5    17.8    -      -       -      +
     59A  ILE*     4.9     9.6    -      -       -      +
     60A  ILE*     3.5    15.8    -      -       -      +
     91A  ASP      3.2    10.5    +      -       -      -
     92A  LEU      3.3     4.8    +      -       -      -
     94A  ALA*     1.3    77.9    -      -       -      +
     96A  VAL*     1.3    54.1    +      -       -      +
     98A  TYR*     4.0     3.4    -      -       -      -
     99A  THR*     2.8    32.6    +      -       -      -
    301A  VAL*     5.9     2.2    -      -       -      -
    304A  SER*     5.3     1.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 96 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  ILE*     3.7    14.4    -      -       +      -
     92A  LEU*     3.3    24.1    +      -       +      +
     93A  LEU*     3.3    19.5    +      -       +      +
     94A  ALA      3.2     0.6    -      -       -      -
     95A  GLY*     1.3    73.2    -      -       -      +
     97A  ALA*     1.3    55.9    +      -       -      +
     98A  TYR      3.1     3.6    -      -       -      -
     99A  THR*     2.8    27.6    +      -       -      -
    100A  ALA*     3.0    13.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 97 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     93A  LEU      2.8    19.9    +      -       -      +
     94A  ALA*     3.8     3.1    -      -       -      +
     96A  VAL*     1.3    72.9    -      -       -      +
     98A  TYR*     1.4    56.9    +      -       -      +
     99A  THR      3.5     0.2    -      -       -      -
    100A  ALA*     4.0     7.9    -      -       -      +
    101A  ASN*     3.1    23.5    +      -       -      +
    120A  ARG      4.6     2.4    -      -       -      +
    123A  SER*     3.4    40.3    +      -       -      +
    124A  MET*     3.8    17.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 98 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  PHE*     4.8     6.2    -      +       +      -
     56A  CYS*     3.8    14.4    -      -       -      -
     94A  ALA      2.8    17.9    +      -       -      +
     95A  GLY      4.4     2.7    -      -       -      +
     97A  ALA*     1.4    74.7    -      -       -      +
     99A  THR*     1.4    61.5    +      -       -      +
    100A  ALA      3.3     0.7    -      -       -      -
    101A  ASN*     3.5    23.4    +      -       +      -
    102A  LEU*     2.9    57.7    +      -       +      +
    124A  MET*     3.8    16.8    -      -       +      -
    294A  GLU*     4.4     9.2    +      -       -      -
    297A  LEU*     5.2     1.0    -      -       +      +
    298A  VAL*     3.4    27.7    +      -       +      +
    301A  VAL*     3.5    48.9    -      -       +      -
   1201A  ML5      4.0    14.7    +      +       -      -
----------------------------------------------------------
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Residues in contact with THR 99 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  ILE*     3.8    28.7    +      -       +      +
     56A  CYS*     3.2    19.1    -      -       -      +
     57A  CYS*     5.3     5.0    -      -       -      -
     60A  ILE*     5.4     1.0    -      -       -      +
     95A  GLY      2.8    19.7    +      -       -      -
     96A  VAL*     2.8    11.0    +      -       -      -
     98A  TYR*     1.4    75.0    -      -       -      +
    100A  ALA*     1.4    57.2    +      -       -      +
    102A  LEU*     3.4    11.3    +      -       -      +
    103A  LEU*     3.1    42.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 100 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     96A  VAL*     3.0    15.0    +      -       +      +
     97A  ALA*     4.0     8.7    -      -       -      +
     99A  THR*     1.4    74.3    -      -       -      +
    101A  ASN*     1.4    58.5    +      -       -      +
    103A  LEU*     3.3    10.9    +      -       -      +
    104A  LEU*     2.9    46.7    +      -       +      +
    120A  ARG*     5.3     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 101 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  ALA      3.1    21.3    +      -       -      +
     98A  TYR*     3.4    32.7    +      -       +      +
    100A  ALA*     1.4    74.8    -      -       -      +
    102A  LEU*     1.4    54.2    +      -       -      +
    104A  LEU      3.1     2.8    +      -       -      -
    105A  SER*     2.5    44.4    +      -       -      -
    120A  ARG*     4.1    21.0    +      -       -      +
    121A  GLU*     2.9    32.5    +      -       -      -
    124A  MET*     4.9     2.5    -      -       -      +
   1201A  ML5      2.9    31.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 102 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  SER*     4.3    26.7    +      -       -      +
     52A  PHE*     3.6    23.3    -      -       +      +
     53A  ILE*     3.6    47.3    -      -       +      +
     56A  CYS*     4.2     2.7    -      -       -      -
     98A  TYR*     2.9    52.0    +      -       +      +
     99A  THR*     3.6     7.4    -      -       -      +
    101A  ASN*     1.4    76.1    +      -       -      +
    103A  LEU*     1.4    59.9    -      -       -      +
    104A  LEU      3.5     0.3    +      -       -      -
    105A  SER*     3.5    18.7    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
     53A  ILE*     3.9    25.8    -      -       +      -
     99A  THR*     3.1    36.3    +      -       +      +
    100A  ALA*     3.3     9.4    +      -       -      +
    102A  LEU*     1.4    75.1    -      -       -      +
    104A  LEU*     1.4    65.1    +      -       +      +
    105A  SER      3.6     0.2    -      -       -      -
    108A  THR*     3.2    19.8    +      -       -      +
    111A  LYS*     5.4     0.5    -      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
    100A  ALA*     2.9    29.7    +      -       +      +
    101A  ASN      3.1     4.5    +      -       -      -
    103A  LEU*     1.4    85.4    -      -       +      +
    105A  SER*     1.4    47.6    +      -       -      +
    108A  THR*     3.1    10.9    +      -       -      -
    109A  THR*     3.8     3.1    -      -       -      -
    111A  LYS*     4.9    14.8    -      -       -      -
    112A  LEU*     3.4    34.5    -      -       +      +
    116A  GLN      6.1     0.4    -      -       -      +
    120A  ARG*     2.5    51.0    +      -       +      -
----------------------------------------------------------
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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