Contacts of the helix formed by residues 3909 - 3933 (chain D) in PDB entry 6X34


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 ASN3909 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3898D  LEU      3.9     4.0    +      -       -      -
   3899D  ARG*     3.1    31.1    +      -       -      +
   3901D  GLN*     3.9     6.5    +      -       -      +
   3907D  THR*     4.8     5.6    -      -       -      +
   3908D  ILE*     1.3    83.1    -      -       -      +
   3910D  ILE*     1.3    57.8    -      -       -      +
   3911D  ILE*     2.9    22.7    -      -       -      +
   3912D  ILE*     2.9    56.0    +      -       +      +
   3913D  CYS*     4.0     2.3    +      -       -      -
   3974D  SER*     4.4    13.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE3910 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3824D  PHE*     5.5     8.3    -      -       +      -
   3827D  ILE*     3.9    31.2    -      -       +      -
   3828D  GLN*     6.1     0.9    -      -       +      -
   3831D  MET*     5.4     2.5    -      -       +      -
   3883D  LEU*     3.8    31.9    -      -       +      -
   3898D  LEU*     3.7    45.0    +      -       +      +
   3901D  GLN*     5.4     0.4    -      -       -      +
   3908D  ILE*     3.5    11.7    -      -       +      +
   3909D  ASN*     1.3    73.2    -      -       -      +
   3911D  ILE*     1.3    60.8    +      -       +      +
   3912D  ILE      3.2     0.2    -      -       -      -
   3913D  CYS*     3.2    19.4    -      -       -      -
   3914D  THR*     2.4    42.6    +      -       -      +
   3963D  TYR*     5.5     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE3911 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3898D  LEU*     4.4    15.5    -      -       +      +
   3899D  ARG*     4.7     7.0    -      -       +      -
   3909D  ASN*     2.9    13.9    +      -       -      +
   3910D  ILE*     1.3    89.0    -      -       +      +
   3912D  ILE*     1.3    62.3    +      -       +      +
   3914D  THR*     3.2     5.1    +      -       -      +
   3915D  VAL*     3.2    32.9    +      -       +      +
   3963D  TYR*     3.7    39.7    -      -       +      -
   3971D  ASN*     4.5    18.8    -      -       -      +
   3974D  SER*     4.2    27.8    -      -       -      +
   3975D  LEU*     5.1     5.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE3912 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3908D  ILE      5.3     1.3    -      -       -      +
   3909D  ASN*     2.9    41.6    +      -       +      +
   3911D  ILE*     1.3    78.7    -      -       +      +
   3913D  CYS*     1.3    63.0    +      -       +      +
   3915D  VAL*     3.2    21.7    -      -       +      +
   3916D  ASP*     3.2    10.7    +      -       +      +
   3974D  SER*     5.8     3.1    -      -       -      +
   3978D  SER*     6.0     3.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with CYS3913 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3827D  ILE*     6.2     0.2    -      -       -      -
   3828D  GLN*     4.1    33.0    -      -       +      -
   3831D  MET*     3.6    24.5    -      -       +      +
   3832D  GLN*     5.4     9.4    +      -       -      +
   3908D  ILE      5.3     0.4    -      -       -      -
   3909D  ASN      4.3     2.0    -      -       -      -
   3910D  ILE*     3.2    39.0    -      -       -      -
   3912D  ILE*     1.3    78.2    -      -       +      +
   3914D  THR*     1.3    63.3    +      -       -      +
   3916D  ASP*     3.7    14.8    +      -       +      +
   3917D  TYR*     3.7     7.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR3914 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3831D  MET*     3.7    15.9    -      -       +      +
   3880D  PHE*     5.0     8.8    -      -       +      -
   3883D  LEU*     5.6     2.4    -      -       +      +
   3910D  ILE*     2.4    37.3    +      -       -      +
   3911D  ILE*     3.4    14.4    -      -       -      +
   3912D  ILE      3.2     0.4    -      -       -      -
   3913D  CYS*     1.3    76.4    -      -       -      +
   3915D  VAL*     1.3    66.9    +      -       +      +
   3917D  TYR*     3.3    13.7    +      -       -      +
   3918D  LEU*     3.3    15.5    -      -       +      +
   3956D  VAL*     5.6     0.7    -      -       +      -
   3959D  SER*     4.7    11.7    -      -       -      +
   3960D  LEU*     5.0    10.3    -      -       +      -
   3963D  TYR*     4.3    23.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL3915 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3911D  ILE*     3.3    19.3    -      -       +      +
   3912D  ILE*     3.2    19.7    -      -       -      +
   3914D  THR*     1.3    73.8    -      -       -      +
   3916D  ASP*     1.3    63.4    +      -       -      +
   3917D  TYR      3.2     0.6    +      -       -      -
   3918D  LEU*     3.5    12.8    +      -       +      +
   3919D  LEU*     3.4    18.2    +      -       -      +
   3960D  LEU*     3.7    28.3    -      -       +      -
   3975D  LEU*     5.2     4.5    -      -       +      -
   3978D  SER*     3.7    34.5    -      -       -      +
   3979D  ARG*     5.0     6.8    -      -       +      +
   3980D  LEU*     4.6    14.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP3916 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3832D  GLN*     5.7     6.7    -      -       -      +
   3912D  ILE*     3.2    18.5    +      -       +      +
   3913D  CYS*     3.8    13.5    -      -       +      +
   3914D  THR      3.2     0.6    -      -       -      -
   3915D  VAL*     1.3    77.1    -      -       -      +
   3917D  TYR*     1.3    63.5    +      -       -      +
   3918D  LEU      3.5     0.2    -      -       -      -
   3919D  LEU*     3.5    12.7    +      -       +      +
   3920D  ARG*     3.4    27.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR3917 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3831D  MET*     4.3    10.3    -      -       +      +
   3834D  CYS*     3.7    25.6    -      -       +      +
   3835D  SER      5.8     0.7    +      -       -      -
   3836D  VAL*     4.4    15.8    -      -       +      +
   3870D  MET*     6.1     0.7    -      -       -      +
   3876D  THR*     3.9     5.9    -      -       -      +
   3880D  PHE*     3.6    38.6    -      +       +      -
   3913D  CYS      3.7     8.2    +      -       -      +
   3914D  THR      3.3    11.3    +      -       -      +
   3915D  VAL      3.2     1.2    -      -       -      -
   3916D  ASP*     1.3    76.4    -      -       -      +
   3918D  LEU*     1.3    55.1    +      -       -      +
   3920D  ARG*     3.1    23.7    +      -       -      +
   3921D  LEU*     2.6    68.1    +      -       +      +
   3952D  VAL*     3.5    24.5    -      -       +      +
   3956D  VAL*     4.3    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU3918 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3914D  THR*     3.3    21.3    -      -       +      +
   3915D  VAL*     3.6    15.0    -      -       +      +
   3917D  TYR*     1.3    73.9    -      -       +      +
   3919D  LEU*     1.3    60.6    +      -       -      +
   3921D  LEU*     3.6    10.8    -      -       +      -
   3922D  GLN*     2.8    31.2    +      -       -      +
   3956D  VAL*     3.8    34.1    -      -       +      -
   3957D  PHE*     3.9    34.8    -      -       +      -
   3960D  LEU*     4.1    24.5    -      -       +      -
   3983D  ALA*     4.7    17.8    -      -       +      +
   3987D  PHE*     4.5     6.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU3919 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160B  GLY      5.2    11.0    -      -       -      +
    161B  GLU*     5.6    10.3    -      -       +      -
   3915D  VAL      3.4     9.8    +      -       -      +
   3916D  ASP*     3.5    16.4    -      -       +      +
   3917D  TYR      3.2     0.2    -      -       -      -
   3918D  LEU*     1.3    81.6    -      -       -      +
   3920D  ARG*     1.3    60.3    +      -       +      +
   3922D  GLN*     4.0     5.2    -      -       +      +
   3923D  GLU*     3.3    25.3    +      -       -      +
   3979D  ARG*     4.0    35.0    -      -       +      +
   3982D  ASP*     5.2     8.3    -      -       +      +
   3983D  ALA*     5.2     8.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG3920 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158B  SER*     5.6     9.4    -      -       -      +
    159B  GLU      5.7     4.5    -      -       -      +
   3831D  MET      3.3    24.9    +      -       -      -
   3832D  GLN*     3.9    32.5    +      -       -      +
   3834D  CYS      4.6     5.9    +      -       -      -
   3836D  VAL*     3.8    28.0    -      -       +      +
   3916D  ASP*     3.4    14.5    +      -       -      +
   3917D  TYR*     3.1    26.1    +      -       -      +
   3919D  LEU*     1.3    76.9    -      -       +      +
   3921D  LEU*     1.3    65.4    +      -       -      +
   3922D  GLN      3.3     0.4    -      -       -      -
   3923D  GLU*     3.2    10.5    +      -       -      +
   3924D  SER*     3.1    20.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU3921 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3836D  VAL*     4.9    10.5    -      -       +      +
   3837D  LEU*     5.7     0.9    -      -       +      +
   3917D  TYR*     2.6    56.4    +      -       +      +
   3918D  LEU*     3.8    10.3    -      -       +      +
   3920D  ARG*     1.3    72.1    -      -       -      +
   3922D  GLN*     1.3    63.0    +      -       -      +
   3924D  SER*     3.1    10.6    +      -       -      +
   3925D  ILE*     3.1    47.9    +      -       +      +
   3949D  ALA*     5.4     8.1    -      -       +      +
   3952D  VAL*     4.9     3.4    -      -       +      -
   3953D  ALA*     4.1    31.4    -      -       +      +
   3956D  VAL*     4.3     8.7    -      -       +      -
   3957D  PHE*     6.3     0.4    -      -       +      -
   3987D  PHE*     4.9     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN3922 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3918D  LEU      2.8    21.9    +      -       -      +
   3919D  LEU*     4.0     7.6    -      -       +      +
   3920D  ARG      3.3     0.2    -      -       -      -
   3921D  LEU*     1.3    73.4    -      -       -      +
   3923D  GLU*     1.3    52.6    +      -       +      +
   3925D  ILE*     4.1     0.9    -      -       -      +
   3926D  SER*     2.6    37.3    +      -       -      -
   3983D  ALA*     5.1     9.6    -      -       +      +
   3986D  GLY*     5.8     3.6    -      -       -      -
   3987D  PHE*     3.6    32.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU3923 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159B  GLU      4.7     5.2    -      -       -      +
    160B  GLY*     3.4    38.8    -      -       -      +
   3919D  LEU*     3.3    17.0    -      -       -      +
   3920D  ARG*     3.2    12.4    +      -       -      +
   3921D  LEU      3.2     0.6    -      -       -      -
   3922D  GLN*     1.3    78.4    -      -       -      +
   3924D  SER*     1.3    61.5    +      -       -      +
   3926D  SER*     3.0    23.0    +      -       -      -
   3927D  ASP*     3.2    28.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER3924 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3836D  VAL*     3.8    16.6    -      -       -      -
   3837D  LEU*     3.3    52.5    -      -       -      +
   3920D  ARG      3.1     8.8    +      -       -      -
   3921D  LEU*     3.1    14.1    +      -       -      -
   3923D  GLU*     1.3    78.6    -      -       -      +
   3925D  ILE*     1.3    64.2    +      -       -      +
   3927D  ASP*     3.9     4.3    +      -       -      +
   3928D  PHE*     3.8    13.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE3925 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3837D  LEU*     5.5     2.9    -      -       +      -
   3921D  LEU*     3.1    38.9    +      -       +      +
   3922D  GLN*     4.4     2.9    -      -       -      +
   3924D  SER*     1.3    76.0    -      -       -      +
   3926D  SER*     1.3    65.0    +      -       -      +
   3928D  PHE*     3.3     9.0    +      -       -      +
   3929D  TYR*     3.3    17.5    +      -       -      +
   3946D  PHE*     3.7    32.8    -      -       +      -
   3949D  ALA*     5.1    13.9    -      -       +      +
   3950D  MET*     6.3     0.4    -      -       -      -
   3953D  ALA*     4.4    17.3    -      -       +      -
   3987D  PHE*     4.3    17.9    -      -       +      -
   3990D  VAL*     5.5    10.3    -      -       +      +
   3991D  PHE*     5.5     6.7    -      -       +      -
   3994D  MET*     5.3     4.8    -      -       +      +
   4014D  LEU*     5.8     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER3926 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3922D  GLN      2.6    25.3    +      -       -      -
   3923D  GLU*     3.0    25.3    +      -       -      -
   3925D  ILE*     1.3    74.2    -      -       -      +
   3927D  ASP*     1.3    59.4    +      -       -      +
   3929D  TYR*     2.8    23.0    +      -       -      +
   3930D  TRP*     3.1    43.0    +      -       -      -
   3990D  VAL*     4.5    13.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP3927 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76B  ARG*     5.3     7.1    -      -       -      +
   3837D  LEU      6.1     0.2    -      -       -      +
   3839D  LEU*     4.7    22.1    -      -       +      +
   3923D  GLU*     3.2    23.9    +      -       -      +
   3924D  SER*     4.3     4.8    -      -       -      +
   3925D  ILE      3.4     0.4    -      -       -      -
   3926D  SER*     1.3    81.1    +      -       -      +
   3928D  PHE*     1.3    60.8    +      -       -      +
   3929D  TYR      3.5     0.2    +      -       -      -
   3930D  TRP*     4.4     9.4    -      -       -      +
   3931D  TYR*     3.5    22.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE3928 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3837D  LEU*     5.8     5.6    -      -       +      -
   3839D  LEU*     6.0     1.6    -      -       -      -
   3842D  PHE*     4.7    17.9    -      +       -      -
   3924D  SER      3.8    10.0    +      -       -      +
   3925D  ILE*     3.3    13.4    +      -       -      +
   3926D  SER      3.1     0.8    -      -       -      -
   3927D  ASP*     1.3    76.8    -      -       -      +
   3929D  TYR*     1.3    65.1    +      -       -      +
   3931D  TYR*     4.0     8.7    -      +       +      +
   3932D  TYR*     3.8    49.1    +      +       +      +
   3938D  ILE*     5.6     4.0    -      -       +      -
   3942D  GLY*     3.5    30.7    -      -       -      -
   3945D  ASN*     5.8     2.2    -      -       +      -
   3946D  PHE*     3.9    36.3    -      +       +      -
   3994D  MET*     5.6     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR3929 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3925D  ILE      3.3     9.1    +      -       -      +
   3926D  SER*     2.8    16.2    +      -       -      +
   3928D  PHE*     1.3    76.5    -      -       -      +
   3930D  TRP*     1.3    60.6    +      -       +      +
   3931D  TYR      3.1     1.6    -      -       -      -
   3932D  TYR*     3.2     5.6    +      -       -      +
   3933D  SER*     2.4    35.9    +      -       -      +
   3990D  VAL*     4.5    20.6    -      -       +      +
   3994D  MET*     5.4    13.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP3930 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74B  SER*     5.2    13.5    -      -       -      -
     76B  ARG*     4.0    25.1    -      -       +      +
     77B  ALA*     3.5    35.9    -      -       +      +
     80B  GLU*     4.9    13.6    -      -       +      +
   3926D  SER*     3.1    53.0    +      -       -      +
   3927D  ASP*     4.5     8.1    -      -       -      +
   3929D  TYR*     1.3    81.7    -      -       +      +
   3931D  TYR*     1.3    61.2    +      -       -      +
   3932D  TYR      3.3     0.2    -      -       -      -
   3933D  SER*     3.2    22.9    +      -       -      -
   3934D  GLY      4.6     2.8    +      -       -      -
   3989D  HIS*     4.1    30.8    +      +       -      -
   3990D  VAL*     4.5    10.5    -      -       +      -
   3993D  HIS*     5.7     6.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR3931 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76B  ARG*     5.4     1.5    -      -       -      +
   3839D  LEU*     5.4    15.7    -      -       +      -
   3842D  PHE*     5.1    14.7    -      +       -      -
   3843D  GLU*     5.1    12.8    -      -       +      +
   3927D  ASP      3.5    18.2    +      -       -      +
   3928D  PHE*     4.1    11.4    -      +       +      +
   3929D  TYR      3.1     1.0    -      -       -      -
   3930D  TRP*     1.3    80.6    -      -       -      +
   3932D  TYR*     1.3    95.3    +      +       -      +
   3933D  SER      3.6     0.4    -      -       -      -
   3934D  GLY      4.9     2.5    +      -       -      -
   3935D  LYS*     5.1     3.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR3932 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3842D  PHE*     3.7    19.0    -      +       -      -
   3846D  ASN*     4.8     2.6    +      -       -      -
   3928D  PHE*     3.8    48.4    +      +       -      +
   3929D  TYR*     3.2     5.9    +      -       -      +
   3931D  TYR*     1.3   108.7    -      +       -      +
   3933D  SER*     1.3    58.5    +      -       -      +
   3934D  GLY      3.4     2.0    -      -       -      -
   3935D  LYS*     2.9    36.3    -      -       +      +
   3937D  VAL      5.0     3.8    -      -       -      -
   3938D  ILE*     3.9    26.3    -      -       +      +
   3939D  GLU*     3.6    33.4    -      -       +      +
   3942D  GLY*     4.6     5.6    -      -       -      -
   3997D  LYS*     3.4    10.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER3933 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3929D  TYR*     2.4    33.0    +      -       -      +
   3930D  TRP*     3.2    20.2    +      -       -      -
   3931D  TYR      3.6     1.0    -      -       -      -
   3932D  TYR*     1.3    77.2    -      -       -      +
   3934D  GLY*     1.3    65.5    +      -       -      +
   3993D  HIS*     6.0     2.2    -      -       -      +
   3997D  LYS*     3.8    24.9    +      -       -      +
----------------------------------------------------------
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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