Contacts of the helix formed by residues 647 - 671 (chain D) in PDB entry 3F7F


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 PHE 647 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    579D  ILE*     3.6    32.8    -      -       +      -
    580D  PRO*     3.8    29.4    -      -       +      -
    583D  LEU*     3.9     5.2    -      -       +      -
    637D  PHE*     3.6    29.4    -      +       +      -
    642D  LEU*     4.0    28.3    -      -       +      -
    643D  ASP      3.0    20.3    +      -       -      +
    644D  THR      4.1     1.1    -      -       -      -
    646D  ILE*     1.3    95.0    -      -       +      +
    648D  GLY*     1.3    54.8    +      -       -      +
    649D  GLN      3.1     3.3    +      -       -      -
    650D  HIS*     3.2    22.6    +      +       +      +
    651D  ILE*     2.7    41.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 648 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    644D  THR      3.2    20.0    +      -       -      -
    645D  GLU*     3.2     9.2    +      -       -      -
    646D  ILE      3.1     5.5    -      -       -      -
    647D  PHE*     1.3    77.6    -      -       -      +
    649D  GLN*     1.3    62.0    +      -       -      +
    651D  ILE*     3.9     4.8    -      -       -      +
    652D  SER*     3.1    24.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 649 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    645D  GLU      4.8     0.6    +      -       -      -
    646D  ILE      4.3     5.6    +      -       -      +
    647D  PHE      3.1     0.6    -      -       -      -
    648D  GLY*     1.3    74.9    -      -       -      +
    650D  HIS*     1.3    71.8    -      -       +      +
    652D  SER*     3.0    15.3    +      -       -      -
    653D  THR*     2.9    46.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 650 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    580D  PRO*     4.4     5.7    +      -       +      +
    583D  LEU*     4.2    14.5    -      -       +      +
    584D  ASN*     4.1    39.6    +      -       -      -
    587D  ILE*     3.4    31.0    -      -       +      +
    588D  ASN*     4.2    10.1    -      -       -      -
    637D  PHE*     5.0     1.1    -      -       +      -
    646D  ILE      5.7     0.9    -      -       -      -
    647D  PHE*     3.2    36.6    +      +       +      +
    649D  GLN*     1.3    84.7    -      -       +      +
    651D  ILE*     1.3    57.9    +      -       -      +
    653D  THR*     3.1     4.1    +      -       -      -
    654D  LEU*     2.8    41.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 651 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    546D  THR*     4.4     8.7    -      -       +      +
    550D  PHE*     3.7    32.3    -      -       +      -
    634D  LEU*     4.1     3.9    -      -       +      +
    637D  PHE*     3.9    33.9    -      -       +      -
    642D  LEU      5.4     1.1    -      -       -      +
    644D  THR*     4.0    29.2    -      -       -      +
    647D  PHE*     2.7    35.9    +      -       +      +
    648D  GLY*     3.9     4.5    -      -       -      +
    650D  HIS*     1.3    71.9    -      -       -      +
    652D  SER*     1.3    58.3    +      -       -      +
    654D  LEU*     3.7     7.6    -      -       -      +
    655D  LEU*     3.0    40.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 652 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    648D  GLY      3.1    13.7    +      -       -      -
    649D  GLN*     3.0    24.6    +      -       -      -
    651D  ILE*     1.3    78.9    -      -       -      +
    653D  THR*     1.3    63.9    +      -       -      +
    655D  LEU*     4.1     8.2    -      -       -      +
    656D  ASP*     3.2    23.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 653 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    587D  ILE*     3.8    27.4    -      -       +      -
    592D  LYS*     3.9    31.0    +      -       -      +
    649D  GLN*     2.9    37.0    +      -       -      +
    650D  HIS*     3.7     8.1    +      -       -      -
    652D  SER*     1.3    74.8    -      -       -      +
    654D  LEU*     1.3    62.1    +      -       -      +
    656D  ASP*     3.4     6.0    +      -       +      +
    657D  LEU*     2.9    32.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 654 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    583D  LEU*     5.2     0.4    -      -       +      -
    586D  LEU*     5.7     1.3    -      -       +      -
    587D  ILE*     3.7    29.6    -      -       +      -
    591D  MET*     5.0     8.7    -      -       -      -
    630D  THR*     3.7    22.8    -      -       +      +
    633D  VAL*     3.8    31.4    -      -       +      -
    634D  LEU*     3.5    25.6    -      -       +      -
    637D  PHE*     4.0    13.7    -      -       +      -
    650D  HIS*     2.8    26.8    +      -       +      +
    651D  ILE*     3.7     0.7    -      -       -      +
    653D  THR*     1.3    74.9    -      -       -      +
    655D  LEU*     1.3    60.0    +      -       -      +
    657D  LEU*     3.0     9.5    +      -       +      +
    658D  HIS*     2.8    32.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 655 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    532D  PHE*     3.6    45.5    -      -       +      +
    535D  ILE*     4.1    28.5    -      -       +      -
    536D  ILE*     3.6    20.6    -      -       +      +
    546D  THR*     6.4     0.2    -      -       +      -
    550D  PHE*     4.7     4.7    -      -       +      -
    634D  LEU*     3.7    19.3    -      -       +      -
    651D  ILE*     3.0    38.1    +      -       +      +
    652D  SER*     4.1     7.4    -      -       -      +
    654D  LEU*     1.3    76.0    -      -       -      +
    656D  ASP*     1.3    60.7    +      -       -      +
    658D  HIS*     3.9     5.8    +      -       -      +
    659D  TYR*     3.2    21.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 656 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    536D  ILE*     4.4    10.7    -      -       +      +
    592D  LYS*     6.0     0.9    -      -       -      -
    652D  SER      3.2    19.5    +      -       -      +
    653D  THR*     3.6     6.8    -      -       -      +
    654D  LEU      3.1     0.4    -      -       -      -
    655D  LEU*     1.3    77.1    -      -       -      +
    657D  LEU*     1.3    69.4    +      -       -      +
    659D  TYR*     3.5     4.5    +      -       -      +
    660D  LYS*     2.6    61.8    +      -       -      +
    714D  ILE*     3.7    15.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 657 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    587D  ILE*     4.9     5.2    -      -       +      -
    591D  MET*     4.4    22.7    -      -       +      -
    592D  LYS*     4.3    22.9    -      -       +      -
    630D  THR*     4.7     1.6    -      -       +      -
    653D  THR*     2.9    37.6    +      -       +      +
    654D  LEU*     3.0     9.4    +      -       +      +
    656D  ASP*     1.3    80.4    -      -       -      +
    658D  HIS*     1.3    60.9    +      -       -      +
    660D  LYS*     3.4     4.5    +      -       +      +
    661D  GLN*     2.8    45.3    +      -       -      +
    710D  TYR*     3.4    51.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 658 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    529D  SER*     2.8    48.2    +      -       -      -
    532D  PHE*     3.6    17.1    -      -       +      +
    533D  LEU*     4.0    17.6    -      -       +      +
    627D  TYR*     3.4    24.5    -      +       -      -
    630D  THR*     3.7     8.9    -      -       +      +
    631D  LEU*     3.7    21.9    -      -       +      +
    634D  LEU*     3.9    13.7    -      -       +      -
    654D  LEU      2.8    16.3    +      -       -      +
    655D  LEU      3.9     5.6    +      -       -      +
    657D  LEU*     1.3    78.1    -      -       -      +
    659D  TYR*     1.3    59.2    +      -       -      +
    661D  GLN*     3.1    14.5    +      -       -      +
    662D  PHE*     2.8    30.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 659 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    533D  LEU*     3.4    29.6    -      -       +      -
    536D  ILE*     3.6    33.2    -      -       +      -
    537D  THR*     3.9    19.7    -      -       +      +
    655D  LEU      3.2    15.8    +      -       -      +
    656D  ASP*     3.7     5.6    -      -       -      +
    657D  LEU      3.3     0.2    -      -       -      -
    658D  HIS*     1.3    80.2    +      -       -      +
    660D  LYS*     1.3    63.8    +      -       -      +
    662D  PHE*     3.4     2.1    +      -       -      +
    663D  LEU*     3.0    51.4    +      -       +      +
    714D  ILE*     3.6    36.9    +      -       +      -
    716D  GLU*     3.7     6.9    +      -       -      -
    725D  ARG*     3.1    30.8    -      -       -      +
    729D  ILE*     4.1    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 660 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    656D  ASP*     2.6    48.2    +      -       -      +
    657D  LEU*     3.9     4.3    -      -       +      +
    659D  TYR*     1.3    79.5    -      -       +      +
    661D  GLN*     1.3    56.7    +      -       -      +
    663D  LEU*     3.4     5.6    +      -       -      +
    664D  LEU*     2.9    32.1    +      -       -      +
    709D  VAL*     3.6    31.7    -      -       +      +
    710D  TYR*     3.0    34.0    +      -       +      +
    711D  ASN      4.9     0.6    -      -       -      -
    712D  ALA*     3.5    20.0    +      -       +      +
    714D  ILE*     3.9    26.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 661 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    591D  MET*     3.5     8.3    -      -       -      +
    623D  LEU*     4.2    21.1    -      -       +      +
    626D  HIS*     3.7     1.2    +      -       -      +
    627D  TYR*     3.2    35.7    -      -       +      -
    630D  THR*     2.8    28.1    +      -       -      -
    657D  LEU*     2.8    30.9    +      -       -      +
    658D  HIS*     3.3    15.5    -      -       -      +
    660D  LYS*     1.3    73.6    -      -       -      +
    662D  PHE*     1.3    66.5    +      -       -      +
    664D  LEU*     3.3     4.5    +      -       -      +
    665D  LEU*     2.9    30.7    +      -       -      +
    710D  TYR*     3.0    31.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 662 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    397D  ILE*     5.0     3.8    -      -       +      -
    398D  VAL*     4.1    26.9    -      -       +      -
    529D  SER*     4.1     9.2    -      -       -      -
    533D  LEU*     3.5    37.7    -      -       +      -
    627D  TYR*     3.7    33.3    -      +       +      -
    658D  HIS*     2.8    18.9    +      -       +      +
    659D  TYR      3.6     3.6    -      -       -      +
    661D  GLN*     1.3    74.8    -      -       -      +
    663D  LEU*     1.3    67.7    +      -       -      +
    665D  LEU*     2.9     6.5    +      -       -      +
    666D  ASN*     2.7    43.2    +      -       +      +
    729D  ILE*     3.8    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 663 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    659D  TYR*     3.0    47.4    +      -       +      +
    660D  LYS*     3.6     6.1    -      -       -      +
    662D  PHE*     1.3    78.4    -      -       +      +
    664D  LEU*     1.3    57.9    +      -       -      +
    666D  ASN*     3.0     8.5    +      -       +      +
    667D  LEU*     2.8    44.1    +      -       +      +
    714D  ILE*     4.9     8.7    -      -       +      -
    725D  ARG*     5.3     6.1    -      -       +      -
    729D  ILE*     3.3    41.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 664 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    616D  LEU*     6.3     0.2    -      -       +      -
    619D  LEU*     4.0    20.2    -      -       +      +
    620D  HIS*     5.4     2.7    -      -       +      -
    623D  LEU*     2.9    40.4    -      -       +      -
    660D  LYS      2.9    20.2    +      -       -      +
    661D  GLN      3.7     3.4    -      -       -      +
    663D  LEU*     1.3    72.5    -      -       -      +
    665D  LEU*     1.3    61.3    +      -       +      +
    667D  LEU*     3.1    10.4    +      -       +      +
    668D  TYR*     2.8    29.5    +      -       +      +
    675D  LEU*     4.0    31.4    -      -       +      -
    679D  LEU*     4.4     7.9    -      -       +      -
    709D  VAL*     4.1    22.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 665 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398D  VAL*     3.8    30.5    -      -       +      -
    620D  HIS*     3.3    28.3    -      -       +      +
    623D  LEU*     4.3    10.5    -      -       +      +
    624D  SER*     3.3    33.9    -      -       -      +
    627D  TYR*     3.9    30.7    -      -       +      -
    661D  GLN      2.9    21.1    +      -       -      +
    662D  PHE*     3.4     3.6    -      -       -      +
    664D  LEU*     1.3    79.0    -      -       +      +
    666D  ASN*     1.3    61.7    +      -       -      +
    668D  TYR*     3.5     4.8    +      -       -      +
    669D  ARG*     3.0    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 666 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    398D  VAL*     4.1    14.5    -      -       +      +
    400D  LYS*     4.0    15.6    +      -       -      +
    662D  PHE*     2.7    35.9    +      -       +      +
    663D  LEU*     3.2    14.8    -      -       -      +
    665D  LEU*     1.3    75.6    -      -       -      +
    667D  LEU*     1.3    65.1    +      -       +      +
    669D  ARG*     3.5     8.1    +      -       -      +
    670D  GLN*     3.1    47.5    +      -       -      +
    728D  ILE*     3.4    27.0    +      -       -      +
    729D  ILE*     4.2     4.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 667 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    663D  LEU*     2.8    34.0    +      -       +      +
    664D  LEU*     3.7     8.5    -      -       +      +
    666D  ASN*     1.3    73.6    -      -       +      +
    668D  TYR*     1.3    65.0    +      -       -      +
    670D  GLN*     3.8     7.0    -      -       +      +
    671D  ASP*     3.1    26.5    +      -       -      +
    675D  LEU*     4.2    27.4    -      -       +      +
    678D  VAL*     5.8     4.0    -      -       +      -
    728D  ILE*     4.2    28.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 668 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    387D  VAL*     4.1    12.1    -      -       +      +
    616D  LEU*     4.1    25.6    -      -       +      -
    617D  GLU*     2.5    41.0    +      -       -      -
    620D  HIS*     3.1    56.5    -      +       +      -
    664D  LEU*     2.8    18.3    +      -       +      +
    665D  LEU*     3.5     4.5    -      -       -      +
    666D  ASN      3.2     0.2    -      -       -      -
    667D  LEU*     1.3    79.2    -      -       -      +
    669D  ARG*     1.3    72.7    +      -       +      +
    672D  LYS*     3.3    54.9    +      -       +      +
    675D  LEU*     3.6    13.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 669 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    390D  GLN*     5.0     5.1    +      -       -      -
    396D  ASP*     2.9    33.1    +      -       -      -
    398D  VAL*     3.5    16.5    -      -       +      +
    399D  THR*     3.1    38.1    +      -       +      +
    400D  LYS      5.7     0.2    -      -       -      +
    406D  ARG*     5.5     3.1    +      -       -      -
    410D  ASN*     5.7     2.6    -      -       -      +
    413D  SER*     2.8    28.5    +      -       -      +
    414D  ARG*     6.5     0.4    -      -       -      -
    620D  HIS*     2.6    38.3    +      -       -      -
    624D  SER*     4.5     2.0    +      -       -      -
    665D  LEU*     3.0    30.4    +      -       -      +
    666D  ASN*     3.8     9.9    -      -       -      +
    668D  TYR*     1.3    86.5    -      -       +      +
    670D  GLN*     1.3    59.8    +      -       -      +
    672D  LYS*     4.4     2.7    -      -       -      +
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Residues in contact with GLN 670 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    400D  LYS*     3.5    14.9    -      -       -      +
    406D  ARG*     3.8    33.1    -      -       -      +
    413D  SER*     4.7     3.8    +      -       -      -
    666D  ASN*     3.1    35.3    +      -       -      +
    667D  LEU*     3.2    10.0    +      -       +      +
    669D  ARG*     1.3    81.6    -      -       -      +
    671D  ASP*     1.3    66.2    +      -       +      +
    728D  ILE*     3.9    20.1    -      -       +      +
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Residues in contact with ASP 671 (chain D). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    413D  SER*     5.3     2.0    -      -       -      -
    667D  LEU      3.1    10.2    +      -       -      +
    669D  ARG      3.4     1.0    -      -       -      -
    670D  GLN*     1.3    85.5    -      -       +      +
    672D  LYS*     1.3    63.4    +      -       -      +
    673D  CYS*     3.4     9.0    +      -       -      +
    674D  LEU*     3.0    40.7    +      -       +      +
    675D  LEU*     3.0    18.2    +      -       -      +
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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
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   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