Contacts of the helix formed by residues 491 - 515 (chain D) in PDB entry 4DAJ


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 491 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106D  LEU*     4.0    31.9    -      -       +      +
    165D  ARG*     5.3     3.1    -      -       -      +
    489D  ALA      3.3     3.0    +      -       -      -
    490D  GLN*     1.3    81.0    -      -       +      +
    492D  LEU*     1.3    61.2    +      -       -      +
    493D  SER*     3.5     2.2    -      -       -      +
    494D  ALA*     4.3     4.9    -      -       -      +
    495D  ILE*     3.5    24.4    +      -       +      +
    542D  CYS      4.0     9.0    +      -       -      -
    543D  TYR*     4.3     7.9    -      -       +      -
    546D  CYS*     3.2    46.9    -      -       -      +
    547D  ASN*     4.8    11.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 492 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158D  LEU*     5.2     5.2    -      -       +      +
    161D  ILE*     3.7    28.9    -      -       +      -
    162D  SER*     3.6    32.5    -      -       -      +
    165D  ARG*     4.3    12.8    -      -       +      +
    250D  TYR*     3.4    43.3    -      -       +      -
    253D  ILE*     5.6     3.6    -      -       +      -
    489D  ALA*     3.5    19.2    +      -       -      +
    490D  GLN      2.9     4.4    -      -       -      +
    491D  THR*     1.3    78.9    -      -       -      +
    493D  SER*     1.3    66.4    +      -       -      +
    494D  ALA      3.4     0.2    -      -       -      -
    495D  ILE*     4.9     1.8    -      -       -      -
    496D  LEU*     2.9    40.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 493 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250D  TYR*     2.8    41.1    +      -       -      -
    254D  TYR*     5.0     3.6    -      -       -      -
    489D  ALA*     4.0    10.5    +      -       -      +
    491D  THR      5.8     0.4    -      -       -      -
    492D  LEU*     1.3    78.1    -      -       -      +
    494D  ALA*     1.3    68.2    +      -       -      +
    496D  LEU*     4.5     2.3    -      -       -      +
    497D  LEU*     2.9    32.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 494 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    491D  THR*     4.3     4.8    -      -       -      +
    492D  LEU      3.4     0.4    -      -       -      -
    493D  SER*     1.3    82.0    -      -       -      +
    495D  ILE*     1.3    65.1    +      -       -      +
    497D  LEU*     3.4     5.0    -      -       -      +
    498D  ALA*     2.9    19.8    +      -       -      +
    542D  CYS*     4.2    24.5    -      -       +      +
    545D  LEU*     5.9     4.7    -      -       +      -
    546D  CYS*     4.1    25.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 495 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    106D  LEU*     5.1     2.7    -      -       +      -
    109D  LEU*     4.2    10.3    -      -       +      -
    158D  LEU*     3.4    28.7    -      -       +      -
    161D  ILE*     6.0     0.7    -      -       +      -
    491D  THR*     3.5    21.0    +      -       -      +
    492D  LEU*     3.6     2.6    +      -       -      +
    493D  SER      3.5     0.2    -      -       -      -
    494D  ALA*     1.3    78.6    -      -       -      +
    496D  LEU*     1.3    64.7    +      -       -      +
    498D  ALA*     3.0     8.1    +      -       -      +
    499D  PHE*     2.9    20.4    +      -       -      +
    539D  ASN*     3.2    38.1    -      -       -      +
    542D  CYS*     3.2    29.8    -      -       +      -
    543D  TYR*     3.5    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 496 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158D  LEU*     4.4    10.3    -      -       +      -
    162D  SER*     4.7     2.5    -      -       -      +
    243D  VAL      5.5     0.4    -      -       -      +
    246D  MET*     3.5    54.3    -      -       +      +
    247D  THR*     4.6     6.7    -      -       +      +
    250D  TYR*     4.5    16.6    -      -       +      -
    492D  LEU*     2.9    35.8    +      -       +      +
    493D  SER*     4.5     4.0    -      -       -      +
    495D  ILE*     1.3    76.5    -      -       -      +
    497D  LEU*     1.3    72.9    +      -       +      +
    499D  PHE*     3.1    10.8    +      -       +      +
    500D  ILE*     3.0    32.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 497 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    493D  SER*     2.9    25.7    +      -       -      +
    494D  ALA*     3.4     4.7    -      -       -      +
    496D  LEU*     1.3    84.5    -      -       +      +
    498D  ALA*     1.3    62.4    +      -       -      +
    500D  ILE*     2.9    26.0    -      -       +      +
    501D  ILE*     3.0    51.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 498 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    494D  ALA      2.9    11.9    +      -       -      +
    495D  ILE*     3.2    12.8    -      -       -      +
    497D  LEU*     1.3    76.3    -      -       -      +
    499D  PHE*     1.3    64.7    +      -       -      +
    501D  ILE*     2.9     9.3    +      -       -      +
    502D  THR*     2.9    30.9    +      -       +      +
    535D  ASN*     3.8    12.1    -      -       -      +
    538D  VAL*     4.7    11.9    -      -       +      -
    539D  ASN*     5.1     2.5    -      -       -      +
    542D  CYS*     4.4    14.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 499 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154D  SER*     5.2     3.6    -      -       -      -
    155D  VAL*     3.5    41.1    -      -       +      -
    158D  LEU*     3.6    29.6    -      -       +      -
    239D  PHE*     3.6    22.4    -      +       -      -
    242D  PRO*     6.3     0.4    -      -       +      -
    243D  VAL*     3.8    15.0    -      -       +      -
    246D  MET*     4.0    18.8    -      -       +      -
    495D  ILE*     2.9     9.6    +      -       +      +
    496D  LEU*     3.3    10.1    -      -       +      +
    498D  ALA*     1.3    75.5    -      -       -      +
    500D  ILE*     1.3    68.6    +      -       +      +
    503D  TRP*     2.9    65.8    +      +       -      +
    535D  ASN*     3.1    21.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 500 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239D  PHE*     4.8     0.2    -      -       -      -
    243D  VAL*     4.5    21.3    -      -       +      -
    247D  THR*     5.9     1.6    -      -       -      +
    496D  LEU*     3.0    21.4    +      -       +      +
    497D  LEU*     2.9    34.1    -      -       +      +
    499D  PHE*     1.3    82.0    -      -       +      +
    501D  ILE*     1.3    56.1    +      -       +      +
    503D  TRP*     4.7     0.4    -      -       -      -
    504D  THR*     2.7    62.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 501 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    497D  LEU*     3.0    48.9    +      -       +      +
    498D  ALA*     2.9     8.9    +      -       -      +
    500D  ILE*     1.3    79.4    -      -       +      +
    502D  THR*     1.3    66.9    +      -       +      +
    503D  TRP      3.3     0.2    -      -       -      -
    504D  THR*     4.4     2.0    -      -       -      -
    505D  PRO*     2.9    26.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 502 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    498D  ALA*     2.9    24.5    +      -       +      +
    501D  ILE*     1.3    82.7    -      -       +      +
    503D  TRP*     1.3    61.5    +      -       -      +
    505D  PRO*     4.0     3.9    -      -       -      +
    506D  TYR      5.5     0.2    +      -       -      -
    531D  LEU*     3.3    27.8    -      -       +      +
    532D  CYS*     3.3    23.2    +      -       -      -
    534D  ILE*     4.1    21.5    -      -       +      +
    535D  ASN*     2.8    33.1    -      -       -      +
    538D  VAL*     5.8     4.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 503 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116D  ILE*     5.7     0.7    -      -       +      -
    151D  SER*     3.6    38.4    -      -       -      -
    154D  SER*     5.5     3.1    -      -       -      -
    155D  VAL*     3.8    17.3    -      -       +      -
    239D  PHE*     3.4    26.2    -      +       +      -
    499D  PHE*     2.9    39.7    +      +       -      +
    502D  THR*     1.3    93.7    -      -       -      +
    504D  THR*     1.3    68.0    +      -       -      +
    505D  PRO*     3.2     2.2    -      -       -      -
    506D  TYR*     2.8    24.3    +      -       -      +
    507D  ASN*     3.4     7.1    +      -       -      -
    532D  CYS*     3.2    28.0    +      -       -      -
    535D  ASN*     3.6    16.6    +      -       +      +
    536D  SER*     5.7     2.5    -      -       -      -
   2000D  0HK      3.4    55.9    -      +       +      -
----------------------------------------------------------
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Residues in contact with THR 504 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    239D  PHE*     3.3    30.9    -      -       +      -
    240D  TYR*     6.2     2.5    -      -       +      -
    243D  VAL*     5.1     2.2    -      -       +      -
    500D  ILE*     2.7    48.5    +      -       +      +
    501D  ILE*     4.0     2.1    +      -       -      -
    503D  TRP*     1.3    72.0    -      -       -      +
    505D  PRO*     1.3    74.9    -      -       -      +
    506D  TYR      2.9     0.5    +      -       -      -
    507D  ASN*     3.0     4.6    +      -       -      +
    508D  ILE*     2.8    40.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 505 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    501D  ILE      2.9    25.1    -      -       -      +
    502D  THR      4.0     0.7    -      -       -      -
    503D  TRP      3.2     6.1    -      -       -      +
    504D  THR*     1.3    95.5    -      -       -      +
    506D  TYR*     1.3    56.2    +      -       -      +
    508D  ILE*     3.4    14.2    +      -       +      +
    509D  MET*     2.9    28.3    +      -       -      +
    528D  GLY*     5.8     0.4    -      -       -      -
    531D  LEU*     3.9    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 506 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148D  TYR*     4.6     4.9    +      -       -      -
    502D  THR      5.5     0.2    +      -       -      -
    503D  TRP      2.8    11.6    +      -       -      +
    505D  PRO*     1.3    78.6    -      -       -      +
    507D  ASN*     1.3    56.6    +      -       -      +
    509D  MET*     2.7    43.8    +      -       +      +
    510D  VAL*     2.9    28.7    +      -       +      +
    525D  TRP*     4.0    28.1    -      +       +      -
    528D  GLY*     3.6    25.4    -      -       -      +
    529D  TYR*     3.6    33.5    -      +       -      -
    531D  LEU*     5.5     0.6    -      -       +      +
    532D  CYS*     3.7    17.7    -      -       -      -
   2000D  0HK      3.6    47.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 507 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235D  ALA*     3.4    14.4    -      -       -      +
    239D  PHE*     3.4    40.6    -      -       +      +
    240D  TYR*     2.6    35.0    +      -       +      +
    503D  TRP*     3.4    16.0    +      -       -      +
    504D  THR*     3.0     5.7    +      -       -      +
    506D  TYR*     1.3    78.5    -      -       -      +
    508D  ILE*     1.3    55.1    +      -       -      +
    510D  VAL*     3.3    11.4    +      -       -      +
    511D  LEU      2.9    20.3    +      -       -      -
   2000D  0HK      3.1    39.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 508 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240D  TYR*     3.9     9.6    -      -       +      +
    504D  THR*     2.8    42.3    +      -       -      +
    505D  PRO*     3.4    11.2    -      -       +      +
    507D  ASN*     1.3    74.7    -      -       +      +
    509D  MET*     1.3    62.3    +      -       -      +
    511D  LEU*     3.2    14.4    +      -       +      +
    512D  VAL*     2.9    35.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET 509 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    505D  PRO      2.9    11.5    +      -       -      +
    506D  TYR*     2.7    44.3    +      -       +      +
    508D  ILE*     1.3    78.6    -      -       -      +
    510D  VAL*     1.3    54.4    +      -       -      +
    512D  VAL*     3.5     8.1    +      -       -      +
    513D  ASN*     2.9    26.7    +      -       -      +
    520D  ILE*     3.8    30.4    -      -       +      +
    524D  TYR*     3.6    24.0    -      -       -      +
    525D  TRP*     3.5    43.3    -      -       +      +
    528D  GLY*     4.2     4.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 510 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228D  PRO*     4.8     1.3    -      -       +      +
    231D  THR*     3.6    28.0    -      -       +      +
    232D  PHE*     4.1    19.7    -      -       +      -
    235D  ALA*     4.8     6.3    -      -       +      -
    506D  TYR*     2.9    41.9    +      -       +      +
    507D  ASN*     3.4    10.8    -      -       -      +
    508D  ILE      3.2     0.2    -      -       -      -
    509D  MET*     1.3    72.5    -      -       -      +
    511D  LEU*     1.3    66.8    +      -       -      +
    512D  VAL      3.1     1.6    -      -       -      -
    513D  ASN*     2.9    18.0    +      -       +      +
    514D  THR*     2.9    13.6    +      -       -      +
    525D  TRP*     4.1    14.8    -      -       +      -
   2000D  0HK      4.6     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 511 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232D  PHE*     3.1    40.1    -      -       +      -
    240D  TYR*     3.8    13.7    -      -       +      +
    507D  ASN      2.9    14.7    +      -       -      +
    508D  ILE*     3.3    19.1    -      -       +      +
    510D  VAL*     1.3    75.7    -      -       -      +
    512D  VAL*     1.3    66.4    +      -       +      +
    514D  THR*     3.4     3.8    +      -       -      -
    515D  PHE*     3.2    38.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 512 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    508D  ILE*     2.9    25.0    +      -       +      +
    509D  MET*     3.7     5.6    -      -       -      +
    511D  LEU*     1.3    77.8    -      -       +      +
    513D  ASN*     1.3    61.9    +      -       -      +
    514D  THR      3.0     6.1    +      -       -      -
    515D  PHE*     3.1    17.5    +      -       -      +
    516D  CYS*     3.4    16.5    +      -       -      -
    519D  CYS*     5.2     1.1    -      -       +      -
    520D  ILE*     3.8    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 513 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228D  PRO*     3.8    17.5    -      -       -      +
    509D  MET      2.9    16.9    +      -       -      +
    510D  VAL*     2.9     7.9    +      -       +      +
    512D  VAL*     1.3    73.5    -      -       -      +
    514D  THR*     1.3    62.3    -      -       -      +
    515D  PHE      3.2     0.2    -      -       -      -
    516D  CYS*     3.5    21.2    -      -       -      +
    517D  ASP*     3.6    22.8    +      -       -      +
    519D  CYS*     4.4     0.8    -      -       -      -
    520D  ILE*     4.3    10.6    +      -       +      +
    525D  TRP*     3.3    37.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 514 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248C  ILE*     5.2     6.3    -      -       +      -
    252C  ARG*     3.2    21.9    +      -       -      +
    228D  PRO*     3.6    18.8    +      -       -      +
    229D  THR*     4.5    18.6    -      -       +      -
    232D  PHE*     3.3    34.5    -      -       +      +
    510D  VAL      2.9    12.2    +      -       -      -
    511D  LEU      3.4    11.7    -      -       -      -
    512D  VAL      3.0     0.8    -      -       -      -
    513D  ASN*     1.3    81.1    -      -       -      +
    515D  PHE*     1.3    81.5    +      -       +      +
    516D  CYS      3.7     3.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 515 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248C  ILE*     4.2    36.6    -      -       +      -
    252C  ARG*     3.9    17.8    +      -       -      +
    232D  PHE*     5.4     2.9    -      +       -      -
    511D  LEU*     3.2    38.6    -      -       +      -
    512D  VAL*     3.1     9.5    +      -       -      +
    514D  THR*     1.3    89.7    -      -       +      +
    516D  CYS*     1.3    60.1    +      -       -      +
----------------------------------------------------------
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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