Contacts of the helix formed by residues 888 - 912 (chain A) in PDB entry 2RD0


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 GLU 888 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    -18A  ASP*     3.1    30.1    -      -       +      +
    887A  GLY*     1.3    68.5    -      -       -      -
    889A  ILE*     1.3    65.6    +      -       -      +
    890A  TYR      3.3     0.4    +      -       -      -
    891A  ASP*     3.7    21.6    +      -       +      +
    892A  ALA*     4.0     3.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 889 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    -19A  HIS*     3.8    39.9    -      -       +      +
    -18A  ASP*     4.9     6.5    -      -       +      -
    884A  LYS      4.7     4.0    -      -       -      +
    885A  ASN*     3.4    37.5    -      -       +      +
    886A  LYS      3.7    17.9    -      -       -      +
    888A  GLU*     1.3    75.5    -      -       -      +
    890A  TYR*     1.3    65.0    +      -       -      +
    892A  ALA*     2.9    18.8    +      -       -      +
    893A  ALA      3.0     9.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 890 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    878A  HIS*     2.9    25.0    +      +       -      -
    881A  LEU      4.5     3.4    -      -       -      -
    882A  LYS*     3.7    36.4    -      -       +      -
    885A  ASN*     3.1    31.8    +      -       -      +
    887A  GLY      3.1    15.0    +      -       -      +
    889A  ILE*     1.3    73.5    -      -       -      +
    891A  ASP*     1.3    74.4    +      -       -      +
    893A  ALA*     3.0     4.6    +      -       +      +
    894A  ILE*     2.8    60.2    +      -       +      +
    965A  SER*     3.5    22.2    +      -       -      -
    966A  LYS      4.7     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 891 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    887A  GLY      4.5     0.2    +      -       -      -
    888A  GLU*     3.7    18.0    +      -       +      +
    889A  ILE      3.1     1.0    +      -       -      -
    890A  TYR*     1.3    94.7    -      -       -      +
    892A  ALA*     1.3    57.2    +      -       -      +
    894A  ILE*     3.3     6.6    +      -       -      +
    895A  ASP*     3.0    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 892 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    -19A  HIS*     3.5    31.4    -      -       +      +
    -18A  ASP*     4.4    14.6    -      -       -      +
    888A  GLU      4.0     1.7    +      -       -      +
    889A  ILE      2.9    10.5    +      -       -      +
    891A  ASP*     1.3    78.6    -      -       -      +
    893A  ALA*     1.3    58.1    +      -       -      +
    895A  ASP*     3.2     9.3    +      -       -      +
    896A  LEU*     2.9    27.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 893 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    -19A  HIS*     3.6     9.1    +      -       +      -
    881A  LEU*     4.2    12.8    -      -       +      +
    885A  ASN*     3.3    42.6    -      -       +      +
    889A  ILE      3.0     5.5    +      -       -      +
    890A  TYR*     3.0     8.6    +      -       +      +
    892A  ALA*     1.3    76.0    -      -       -      +
    894A  ILE*     1.3    64.5    +      -       +      +
    896A  LEU*     3.5     2.2    +      -       -      +
    897A  PHE*     3.1    23.7    +      -       -      +
    926A  ASP      4.0     7.4    -      -       -      +
    927A  GLY*     3.9     5.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 894 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    878A  HIS*     4.1     6.3    -      -       +      -
    881A  LEU*     5.1     8.1    -      -       +      -
    890A  TYR*     2.8    64.8    +      -       +      +
    891A  ASP*     3.7     6.3    -      -       -      +
    893A  ALA*     1.3    73.2    -      -       +      +
    895A  ASP*     1.3    55.4    +      -       -      +
    897A  PHE*     3.6     5.3    -      -       -      +
    898A  THR*     2.6    44.4    +      -       -      +
    963A  VAL*     3.1    39.3    -      -       +      +
    964A  ILE*     4.6     1.6    -      -       -      -
    965A  SER*     4.1    14.8    -      -       -      +
    976A  GLU*     4.8     5.8    -      -       -      +
    979A  ARG*     4.9     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 895 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    832A  ARG*     4.4     7.4    +      -       -      -
    891A  ASP      3.0    13.3    +      -       -      +
    892A  ALA*     3.3    13.5    -      -       -      +
    893A  ALA      3.2     0.2    -      -       -      -
    894A  ILE*     1.3    75.0    -      -       -      +
    896A  LEU*     1.3    57.8    +      -       -      +
    898A  THR*     2.9     3.3    +      -       -      -
    899A  ARG*     2.7    68.5    +      -       -      -
    979A  ARG*     3.5    22.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 896 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    -21A  HIS*     3.5    26.5    -      -       +      +
    -19A  HIS*     4.1     5.8    -      -       +      +
    832A  ARG*     3.5    46.0    -      -       +      +
    892A  ALA      2.9    16.5    +      -       -      +
    893A  ALA*     3.7     7.0    -      -       -      +
    894A  ILE      3.4     0.2    -      -       -      -
    895A  ASP*     1.3    75.9    +      -       -      +
    897A  PHE*     1.3    67.6    +      -       -      +
    899A  ARG*     3.3     4.7    -      -       +      +
    900A  SER*     2.8    26.7    +      -       -      +
    926A  ASP*     3.0    34.5    -      -       -      +
    927A  GLY      4.2     0.7    -      -       -      -
    928A  GLN*     3.8    19.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 897 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    877A  LEU*     4.8     3.1    -      -       +      -
    881A  LEU*     3.9    14.4    -      -       +      -
    893A  ALA      3.1    12.6    +      -       -      +
    894A  ILE*     3.6     5.2    -      -       -      +
    896A  LEU*     1.3    79.0    -      -       -      +
    898A  THR*     1.3    60.7    +      -       -      +
    900A  SER*     2.8     6.1    +      -       -      -
    901A  CYS*     2.7    57.6    +      -       +      +
    923A  VAL*     4.3    16.2    -      -       +      -
    927A  GLY      3.3    25.9    +      -       -      +
    929A  LEU*     3.9    17.3    -      -       +      -
    960A  PHE*     3.7    35.0    -      +       -      -
    963A  VAL*     3.6    44.2    -      -       +      -
    964A  ILE*     5.0     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 898 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    894A  ILE*     2.6    30.0    +      -       -      +
    895A  ASP      2.9     1.3    +      -       -      -
    897A  PHE*     1.3    79.6    -      -       -      +
    899A  ARG*     1.3    64.8    +      -       -      +
    901A  CYS*     3.6     3.4    -      -       -      +
    902A  ALA*     3.0    23.6    +      -       -      +
    964A  ILE*     4.1    15.9    -      -       +      +
    979A  ARG*     3.3    38.7    +      -       -      +
    980A  PHE*     3.7    32.9    -      -       +      -
    983A  MET*     4.8     7.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 899 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    830A  ASP*     3.1    60.8    +      -       -      +
    831A  LEU*     3.9    13.7    -      -       -      +
    832A  ARG*     4.2    16.8    -      -       +      +
    895A  ASP*     2.7    52.1    +      -       -      -
    896A  LEU*     3.3    13.0    -      -       +      +
    898A  THR*     1.3    71.2    -      -       -      +
    900A  SER*     1.3    52.8    +      -       -      +
    902A  ALA*     3.0     6.9    +      -       -      +
    903A  GLY*     2.8    31.9    +      -       -      -
    979A  ARG*     5.3     4.2    -      -       -      +
    983A  MET*     3.3    34.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 900 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    832A  ARG*     3.4    28.9    -      -       -      +
    896A  LEU*     2.8    11.3    +      -       -      -
    897A  PHE*     2.8    19.4    +      -       -      -
    899A  ARG*     1.3    77.0    -      -       -      +
    901A  CYS*     1.3    62.4    +      -       -      +
    903A  GLY*     3.1     1.3    +      -       -      +
    904A  TYR*     2.9    31.2    +      -       -      -
    928A  GLN*     4.0     6.1    -      -       -      -
    929A  LEU*     3.1    40.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 901 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    897A  PHE*     2.7    42.5    +      -       +      +
    898A  THR*     3.6     4.9    -      -       -      +
    900A  SER*     1.3    72.6    +      -       -      +
    902A  ALA*     1.3    57.8    +      -       -      +
    904A  TYR*     4.0     0.2    -      -       -      -
    905A  CYS*     2.9    30.8    +      -       -      +
    929A  LEU*     3.8    30.7    -      -       +      -
    954A  PHE*     3.7     8.6    -      -       -      -
    956A  LEU*     4.0    24.9    -      -       -      -
    960A  PHE*     4.7     5.2    -      -       -      -
    964A  ILE*     6.0     3.1    -      -       +      -
    980A  PHE*     4.5     7.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 902 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    831A  LEU*     4.2    14.4    -      -       +      -
    898A  THR      3.0    12.9    +      -       -      +
    899A  ARG*     3.4     8.5    -      -       -      +
    901A  CYS*     1.3    71.6    -      -       -      +
    903A  GLY*     1.3    70.5    +      -       -      +
    905A  CYS*     3.3     3.6    +      -       -      +
    906A  VAL*     3.1    25.7    +      -       -      +
    980A  PHE*     3.5    24.6    -      -       +      -
    983A  MET*     4.3     8.7    -      -       +      -
    984A  CYS*     3.8    16.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 903 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    824A  TRP*     3.8    14.4    -      -       -      -
    831A  LEU*     4.2    11.5    -      -       -      +
    833A  MET*     3.7    19.7    -      -       -      -
    899A  ARG      2.8    12.9    +      -       -      -
    900A  SER      3.1     4.0    +      -       -      -
    902A  ALA*     1.3    78.6    -      -       -      +
    904A  TYR*     1.3    66.3    +      -       -      +
    906A  VAL*     3.0     8.9    +      -       -      +
    907A  ALA*     3.0    11.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 904 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    817A  ILE*     4.2    19.1    -      -       +      +
    832A  ARG      4.5     0.4    -      -       -      -
    833A  MET*     3.6    40.2    -      -       +      +
    834A  LEU      2.9    35.2    +      -       -      -
    900A  SER      2.9    24.0    +      -       -      +
    901A  CYS      4.0     2.5    -      -       -      +
    903A  GLY*     1.3    69.8    -      -       -      -
    905A  CYS*     1.3    67.6    +      -       -      +
    906A  VAL      2.7     2.1    +      -       -      -
    907A  ALA*     2.9     3.0    +      -       +      -
    908A  THR*     2.7    27.9    +      -       -      +
    929A  LEU*     3.7    15.3    -      -       +      -
    930A  PHE*     3.5    16.3    -      -       -      +
    931A  HIS*     3.0    63.6    +      +       +      +
    934A  PHE*     4.3     3.4    -      +       -      -
----------------------------------------------------------
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Residues in contact with CYS 905 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    901A  CYS      2.9    19.6    +      -       -      +
    902A  ALA*     3.4    10.1    -      -       -      +
    904A  TYR*     1.3    74.5    -      -       -      +
    906A  VAL*     1.3    61.4    +      -       -      +
    908A  THR*     3.3    12.4    -      -       -      +
    909A  PHE*     3.5    11.4    +      -       -      +
    954A  PHE*     3.4    35.6    -      -       +      +
    956A  LEU*     3.7    33.9    -      -       -      -
    980A  PHE*     5.0     2.7    -      -       +      -
    984A  CYS*     4.8     8.1    -      -       -      -
   1039A  PHE*     5.4     4.3    -      -       +      -
   1047A  HIS*     5.5     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 906 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    824A  TRP*     4.4     6.1    -      -       +      -
    902A  ALA      3.1    11.6    +      -       -      +
    903A  GLY      3.0     7.8    +      -       -      +
    904A  TYR      2.7     2.8    +      -       -      -
    905A  CYS*     1.3    72.0    -      -       -      +
    907A  ALA*     1.3    69.0    +      -       -      +
    908A  THR      2.9     1.3    -      -       -      -
    909A  PHE*     2.7    17.4    +      -       -      +
    910A  ILE*     2.9    29.7    +      -       +      +
    984A  CYS*     3.7    35.4    -      -       +      +
    987A  ALA*     3.9    14.4    -      -       +      -
    988A  TYR*     3.8    31.4    -      -       +      +
   1039A  PHE*     4.5     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 907 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    817A  ILE*     4.5    11.2    -      -       +      -
    820A  MET*     3.7    30.5    -      -       -      -
    824A  TRP*     4.5     2.9    -      -       +      -
    833A  MET*     3.7    26.9    -      -       +      -
    903A  GLY      3.0     3.3    +      -       -      +
    904A  TYR*     2.9     9.8    +      -       +      +
    906A  VAL*     1.3    76.9    -      -       -      +
    908A  THR*     1.3    61.5    +      -       -      +
    910A  ILE*     3.5     1.3    +      -       -      +
    911A  LEU*     3.1    33.0    +      -       +      +
    913A  ILE*     5.0     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 908 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    904A  TYR*     2.7    26.0    +      -       -      +
    905A  CYS*     3.3     8.5    -      -       -      +
    907A  ALA*     1.3    72.2    -      -       -      +
    909A  PHE*     1.3    62.4    +      -       +      +
    912A  GLY*     3.0    20.8    +      -       -      -
    913A  ILE*     3.5    22.1    +      -       -      +
    916A  ARG*     4.3    11.1    -      -       -      +
    931A  HIS*     4.4    10.4    -      -       -      -
    934A  PHE*     5.9     0.7    -      -       -      -
    953A  PRO*     3.2    23.4    -      -       +      +
    954A  PHE*     3.2    35.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 909 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    905A  CYS      3.6    10.5    -      -       -      +
    906A  VAL*     2.7    14.3    +      -       -      +
    908A  THR*     1.3    74.1    -      -       +      +
    910A  ILE*     1.3    67.6    +      -       +      +
    912A  GLY*     3.1    12.5    +      -       -      -
    951A  ARG*     4.7     8.1    -      -       +      -
    952A  VAL*     4.0    35.8    +      -       +      -
    953A  PRO*     3.9     8.1    -      -       +      -
    988A  TYR*     4.1     7.4    -      +       -      -
   1021A  TYR*     4.6     2.9    +      -       -      -
   1025A  THR*     3.4    40.6    +      -       +      +
   1038A  TYR*     4.3    13.7    -      +       -      -
   1039A  PHE*     3.7    34.8    -      +       +      -
   1042A  GLN*     4.0    35.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 910 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    820A  MET*     4.0    18.6    -      -       +      -
    906A  VAL*     2.9    36.3    +      -       +      +
    907A  ALA      3.8     4.0    -      -       -      +
    909A  PHE*     1.3    77.9    -      -       +      +
    911A  LEU*     1.3    59.6    +      -       +      +
    912A  GLY      3.6     0.2    +      -       -      -
    988A  TYR*     4.2    17.7    -      -       +      -
    991A  ILE*     3.6    33.0    -      -       +      -
   1021A  TYR*     4.6     1.2    -      -       -      -
   1022A  ILE*     3.9    33.8    -      -       +      +
   1025A  THR*     3.3    22.6    +      -       +      +
   1026A  LEU*     3.9    21.5    -      -       +      -
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Residues in contact with LEU 911 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    813A  THR*     4.9    12.3    -      -       -      +
    816A  ILE*     3.9    29.4    -      -       +      -
    817A  ILE*     5.1     4.7    -      -       +      -
    820A  MET*     4.3    15.3    -      -       +      -
    907A  ALA*     3.1    20.0    +      -       +      +
    910A  ILE*     1.3    81.3    -      -       +      +
    912A  GLY*     1.3    66.3    +      -       -      +
    913A  ILE*     3.5    25.8    -      -       +      -
    937A  PHE      2.8    16.5    -      -       -      +
    938A  LEU*     3.5    19.0    -      -       +      +
    998A  PHE*     5.9     0.4    -      -       +      -
   1002A  PHE*     3.5    38.4    -      -       +      -
   1021A  TYR*     4.8     0.9    -      -       -      -
   1022A  ILE*     4.9     5.2    -      -       +      -
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Residues in contact with GLY 912 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    908A  THR      3.0    13.3    +      -       -      -
    909A  PHE      3.1    11.3    +      -       -      -
    910A  ILE      3.3     0.2    -      -       -      -
    911A  LEU*     1.3    76.7    -      -       -      +
    913A  ILE*     1.3    60.7    +      -       -      -
    937A  PHE      2.9    10.4    -      -       -      +
    939A  ASP*     3.0    26.6    +      -       -      +
    951A  ARG*     5.9     0.2    -      -       -      -
    952A  VAL      5.8     0.4    -      -       -      -
    953A  PRO*     3.8     7.9    -      -       -      -
   1021A  TYR*     4.1    20.4    -      -       -      -
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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
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  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) +   -    +    +   +   +    +    -
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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