Contacts of the helix formed by residues 678 - 702 (chain B) in PDB entry 1P48


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 THR 678 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    676B  ALA*     3.6     3.0    -      -       -      +
    677B  LYS*     1.3    88.3    -      -       +      +
    679B  PHE*     1.3    64.9    +      -       -      +
    680B  ALA*     3.6     6.3    +      -       -      +
    681B  GLU*     3.1    23.7    +      -       -      +
    682B  ALA*     3.0    21.8    +      -       -      +
    916B  GLU*     3.6    13.0    -      -       -      +
    925B  PHE*     3.8    12.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 679 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    646B  LEU*     4.3    11.4    -      -       +      -
    647B  PRO*     3.3    26.7    -      -       +      -
    649B  PRO*     3.9    23.6    -      -       +      -
    678B  THR*     1.3    72.1    -      -       -      +
    680B  ALA*     1.3    58.6    +      -       -      +
    682B  ALA*     3.1     2.5    +      -       -      +
    683B  LEU*     2.9    44.8    +      -       +      +
    909B  LEU*     3.4    33.7    -      -       +      -
    912B  LEU*     3.5    44.0    -      -       +      -
    913B  LEU*     3.9    15.5    -      -       +      -
    916B  GLU*     2.8    21.7    +      -       -      +
    925B  PHE*     3.6    18.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 680 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  TYR*     4.4     2.1    +      -       -      -
     56A  TRP*     5.7     1.0    -      -       -      -
    678B  THR*     3.2     6.9    -      -       -      +
    679B  PHE*     1.3    76.7    -      -       -      +
    681B  GLU*     1.3    62.3    +      -       -      +
    683B  LEU*     3.4     2.8    +      -       -      +
    684B  ARG*     3.0    22.0    +      -       -      +
    913B  LEU*     3.8    23.2    -      -       +      +
    916B  GLU*     3.0    19.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 681 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    675B  GLY      4.5     1.0    -      -       -      +
    676B  ALA*     3.4     8.9    -      -       +      -
    677B  LYS*     3.1    35.1    +      -       -      +
    678B  THR*     3.1    21.7    +      -       -      +
    680B  ALA*     1.3    73.9    -      -       -      +
    682B  ALA*     1.3    61.7    +      -       -      +
    684B  ARG*     3.1    28.3    +      -       -      +
    685B  ILE*     2.8    51.2    +      -       +      +
    740B  LYS*     5.8     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 682 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    649B  PRO*     4.1    15.9    -      -       +      +
    651B  LEU*     5.1     0.2    -      -       -      +
    673B  PRO*     3.4    26.2    -      -       +      +
    676B  ALA*     3.5    18.7    -      -       +      +
    678B  THR      3.0    13.8    +      -       -      +
    679B  PHE      3.4     8.7    -      -       -      +
    681B  GLU*     1.3    77.3    -      -       -      +
    683B  LEU*     1.3    57.0    +      -       -      +
    685B  ILE*     3.4     0.6    +      -       -      -
    686B  GLY*     2.8    23.4    +      -       -      -
    925B  PHE*     3.8    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 683 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  TYR*     3.4    38.4    -      -       +      +
    649B  PRO*     4.9     5.5    -      -       +      +
    651B  LEU*     4.9     8.5    -      -       +      -
    679B  PHE*     2.9    26.2    +      -       +      +
    680B  ALA*     3.7     5.6    -      -       -      +
    682B  ALA*     1.3    74.5    -      -       -      +
    684B  ARG*     1.3    60.0    +      -       -      +
    686B  GLY*     3.3     0.8    +      -       -      -
    687B  SER*     2.9    27.7    +      -       -      -
    900B  PRO*     4.8    12.6    -      -       +      -
    906B  LEU*     5.4     0.9    -      -       +      -
    909B  LEU*     3.9    45.8    -      -       +      -
    913B  LEU*     3.8    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 684 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  TYR*     3.1    15.8    +      -       -      +
     54A  SER      4.3     3.6    +      -       -      -
     55A  LYS*     3.9    34.8    -      -       -      +
     56A  TRP*     3.4    44.1    -      -       +      +
    680B  ALA      3.0    13.9    +      -       -      +
    681B  GLU*     3.6    34.4    +      -       -      +
    683B  LEU*     1.3    75.2    -      -       -      +
    685B  ILE*     1.3    69.6    +      -       -      +
    687B  SER*     2.5    21.0    +      -       -      -
    688B  GLU*     2.9    49.1    +      -       -      +
    737B  HIS*     4.6     9.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 685 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    673B  PRO*     4.4     6.3    -      -       +      -
    676B  ALA*     4.2    17.5    -      -       +      +
    681B  GLU*     2.8    46.3    +      -       +      +
    682B  ALA*     3.7     3.8    -      -       -      +
    684B  ARG*     1.3    79.6    -      -       -      +
    686B  GLY*     1.3    63.1    +      -       -      +
    688B  GLU*     3.3     4.0    +      -       -      +
    689B  VAL*     3.0    23.4    +      -       +      +
    737B  HIS*     3.5    46.9    -      -       +      +
    740B  LYS*     4.9    15.5    -      -       +      -
    741B  VAL*     3.6    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 686 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    651B  LEU*     3.8    24.9    -      -       -      -
    671B  ILE*     4.1    11.3    -      -       -      +
    673B  PRO*     4.4     5.2    -      -       -      -
    682B  ALA      2.8    17.6    +      -       -      -
    683B  LEU      3.7     1.6    -      -       -      -
    685B  ILE*     1.3    77.4    -      -       -      +
    687B  SER*     1.3    61.8    +      -       -      +
    689B  VAL*     3.3     2.6    +      -       -      +
    690B  TYR*     2.9    25.2    +      -       -      +
    900B  PRO*     4.3     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 687 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     11A  TYR*     3.7    10.3    -      -       -      -
     15A  GLY      3.7    22.7    -      -       -      -
     56A  TRP*     3.7    15.6    -      -       -      -
    683B  LEU      2.9    14.3    +      -       -      -
    684B  ARG*     2.5    25.1    +      -       -      -
    686B  GLY*     1.3    74.8    -      -       -      +
    688B  GLU*     1.3    58.0    +      -       -      +
    690B  TYR*     3.4     2.4    -      -       -      +
    691B  HIS*     2.9    37.9    +      -       -      -
    900B  PRO*     4.1    18.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 688 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54A  SER      4.6     4.7    -      -       -      +
     55A  LYS*     3.5     5.2    -      -       -      -
     56A  TRP*     2.8    37.7    +      -       -      +
     57A  MET*     4.3    17.5    -      -       +      +
    684B  ARG*     2.9    40.1    +      -       -      +
    685B  ILE*     3.6     6.5    -      -       -      +
    687B  SER*     1.3    80.1    +      -       -      +
    689B  VAL*     1.3    64.0    +      -       -      +
    691B  HIS*     3.4     2.2    +      -       +      +
    692B  ASN*     2.9    31.6    +      -       -      +
    735B  ALA*     4.2     5.9    -      -       +      +
    737B  HIS*     2.8    32.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 689 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    653B  VAL*     5.8     1.8    -      -       +      -
    671B  ILE*     3.9    23.1    -      -       +      -
    685B  ILE      3.0    21.4    +      -       -      +
    686B  GLY      3.8     3.8    -      -       -      +
    688B  GLU*     1.3    74.8    -      -       -      +
    690B  TYR*     1.3    64.5    +      -       -      +
    692B  ASN*     3.2     3.1    +      -       -      +
    693B  LEU*     2.9    23.8    +      -       +      +
    728B  ILE*     4.7     1.6    -      -       +      +
    731B  ALA*     3.7     7.0    -      -       +      +
    732B  ILE*     3.8    37.2    -      -       +      +
    735B  ALA*     4.0    11.4    -      -       +      -
    737B  HIS*     3.9    18.8    -      -       +      -
    741B  VAL*     4.4    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 690 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  ARG      4.4     9.6    -      -       -      -
    653B  VAL*     3.8    36.8    -      -       +      -
    671B  ILE*     4.8     0.2    -      -       -      +
    686B  GLY      2.9    17.5    +      -       -      +
    687B  SER      3.4     4.3    -      -       -      +
    689B  VAL*     1.3    79.4    -      -       -      +
    691B  HIS*     1.3    73.3    +      +       -      +
    693B  LEU*     3.2     9.2    +      -       +      +
    694B  LYS*     3.0    51.5    +      -       +      +
    708B  VAL*     3.4    14.7    -      -       -      +
    712B  GLY      2.7    28.6    +      -       -      -
    713B  GLY*     4.3     1.1    -      -       -      -
    714B  VAL*     4.7     3.1    -      -       +      -
    899B  ALA*     4.1     7.0    -      -       +      -
    900B  PRO*     3.5    23.6    -      -       +      -
    901B  ALA*     3.3    23.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 691 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     14A  ARG*     3.0    28.0    -      -       +      -
     15A  GLY*     3.2    14.8    +      -       -      -
     16A  ASN*     3.1    26.4    +      -       -      -
     56A  TRP*     5.7     1.3    -      -       -      -
     57A  MET*     3.8    39.1    -      -       +      +
     59A  LYS*     6.1     0.9    +      -       -      -
    687B  SER*     2.9    31.0    +      -       -      +
    688B  GLU*     3.4     1.8    +      -       +      +
    690B  TYR*     1.3    86.3    -      +       -      +
    692B  ASN*     1.3    65.5    +      -       -      +
    694B  LYS*     3.2    12.5    +      -       -      +
    695B  SER*     3.2    22.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 692 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  MET*     3.5    25.0    -      -       -      +
    688B  GLU*     2.9    27.3    +      -       -      +
    689B  VAL      3.7     3.8    -      -       -      +
    691B  HIS*     1.3    76.7    -      -       -      +
    693B  LEU*     1.3    60.3    +      -       -      +
    695B  SER*     3.0    19.7    +      -       -      -
    696B  LEU*     3.1    21.2    +      -       -      +
    731B  ALA*     3.9    16.8    -      -       -      +
    734B  ALA*     3.8    20.7    -      -       +      +
    735B  ALA*     3.5    24.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 693 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    653B  VAL*     3.5    50.0    -      -       +      +
    654B  LEU*     4.6     5.2    -      -       +      -
    689B  VAL*     2.9    14.6    +      -       +      +
    690B  TYR*     3.2    12.3    -      -       +      +
    692B  ASN*     1.3    76.2    -      -       -      +
    694B  LYS*     1.3    59.1    +      -       -      +
    696B  LEU*     3.3     2.1    +      -       -      +
    697B  THR*     2.8    48.3    +      -       -      +
    714B  VAL*     4.0    10.8    -      -       +      -
    727B  LEU*     3.9    37.9    -      -       +      +
    728B  ILE*     4.5     6.5    -      -       +      -
    731B  ALA*     3.7    12.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 694 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210A  ASP*     4.8    11.3    +      -       -      -
    690B  TYR*     3.0    47.1    +      -       +      +
    691B  HIS*     3.2    16.3    +      -       -      +
    693B  LEU*     1.3    76.5    -      -       -      +
    695B  SER*     1.3    63.1    +      -       -      +
    697B  THR*     3.7     1.2    -      -       -      -
    698B  LYS*     3.1    38.0    +      -       +      +
    706B  GLY*     2.8    28.2    +      -       -      +
    708B  VAL*     4.4     8.7    -      -       -      +
    714B  VAL*     3.7    26.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 695 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  MET*     5.7     1.6    -      -       -      +
    691B  HIS      3.2     9.8    +      -       -      -
    692B  ASN*     3.0    22.0    +      -       -      -
    694B  LYS*     1.3    77.2    -      -       -      +
    696B  LEU*     1.3    59.0    +      -       -      +
    698B  LYS*     3.5     9.7    +      -       -      +
    699B  LYS*     3.0    29.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 696 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    692B  ASN*     3.1    23.5    +      -       +      +
    693B  LEU      3.8     3.4    -      -       -      +
    695B  SER*     1.3    75.8    +      -       -      +
    697B  THR*     1.3    66.6    +      -       -      +
    699B  LYS*     3.2    15.2    +      -       +      +
    700B  ARG*     3.1    48.1    +      -       -      +
    727B  LEU*     4.3    11.9    -      -       +      +
    730B  ASP*     4.0    15.9    -      -       +      +
    731B  ALA*     3.9    31.9    -      -       +      +
    734B  ALA*     4.5    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 697 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    693B  LEU*     2.8    38.3    +      -       -      +
    694B  LYS      3.7     4.5    -      -       -      -
    696B  LEU*     1.3    78.0    -      -       -      +
    698B  LYS*     1.3    56.5    +      -       -      +
    701B  TYR*     2.9    44.6    +      -       +      +
    705B  ALA*     3.4    25.4    -      -       +      +
    714B  VAL*     3.9    13.4    -      -       +      +
    716B  PRO*     3.8    32.5    -      -       +      -
    727B  LEU*     4.0     8.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 698 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159A  HIS      6.0     2.2    +      -       -      -
    161A  GLY      5.4     4.0    -      -       -      +
    694B  LYS*     3.1    32.4    +      -       +      +
    695B  SER*     3.9     6.7    -      -       -      +
    697B  THR*     1.3    75.6    -      -       -      +
    699B  LYS*     1.3    59.1    +      -       -      +
    702B  GLY*     2.9    37.7    +      -       -      +
    703B  ALA*     2.8    45.0    +      -       -      +
    706B  GLY*     3.5    27.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 699 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    695B  SER      3.0    18.4    +      -       -      +
    696B  LEU*     3.2    18.6    +      -       +      +
    698B  LYS*     1.3    78.4    -      -       -      +
    700B  ARG*     1.3    62.7    +      -       +      +
    702B  GLY      4.8     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 700 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    696B  LEU*     3.1    30.9    +      -       -      +
    699B  LYS*     1.3    87.6    -      -       +      +
    701B  TYR*     1.3    87.5    +      -       +      +
    702B  GLY      3.5     0.7    -      -       -      -
    726B  ASP*     5.2     1.4    -      -       -      +
    727B  LEU*     3.7    29.9    -      -       -      +
    730B  ASP*     2.8    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 701 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    697B  THR*     2.9    31.1    +      -       +      +
    700B  ARG*     1.3    94.9    +      -       +      +
    702B  GLY*     1.3    62.1    +      -       -      +
    704B  SER*     6.0     0.3    -      -       -      -
    705B  ALA*     3.6    19.4    +      -       +      +
    716B  PRO*     4.0     9.9    -      -       +      -
    717B  ASN*     4.4    18.6    -      -       +      +
    718B  ILE*     4.4     6.5    -      -       +      +
    723B  GLU*     2.8    39.3    +      -       -      +
    727B  LEU*     3.4    34.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 702 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    698B  LYS*     2.9    22.9    +      -       -      -
    699B  LYS      4.6     0.6    +      -       -      -
    700B  ARG      3.5     1.4    -      -       -      -
    701B  TYR*     1.3    80.0    -      -       -      +
    703B  ALA*     1.3    68.2    +      -       -      -
    704B  SER*     3.2     4.0    -      -       -      -
    705B  ALA*     2.9    18.4    +      -       -      +
----------------------------------------------------------
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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
------------------------------------------------------------
  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