Contacts of the helix formed by residues 332 - 355 (chain G) in PDB entry 4E2I


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 ASN 332 (chain G).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270G  TRP*     5.1     6.5    -      -       +      -
    330G  SER*     3.2     9.9    +      -       -      +
    331G  LYS*     1.3    93.9    -      -       -      +
    333G  GLN*     1.3    63.1    +      -       -      +
    334G  LYS      3.2     3.4    -      -       -      +
    335G  THR*     3.6    28.5    +      -       +      +
    336G  ILE*     3.0    29.8    +      -       +      +
    339L  GLN*     3.4     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 333 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289G  LEU*     3.2    26.6    -      -       +      +
    293G  LEU*     3.8    24.5    -      -       -      +
    327G  PHE*     3.3    40.4    -      -       +      +
    328G  ALA*     3.0    28.2    -      -       -      +
    330G  SER*     3.6    13.7    -      -       -      +
    332G  ASN*     1.3    77.3    -      -       -      +
    334G  LYS*     1.3    59.1    +      -       -      +
    337G  CYS*     3.6     9.9    +      -       -      -
    274L  THR*     4.6    10.7    +      -       -      +
    339L  GLN*     2.9    18.8    -      -       +      +
    343L  THR*     3.2    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 334 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285G  VAL*     4.1    24.0    -      -       +      +
    286G  LEU*     4.6     7.4    -      -       +      -
    289G  LEU*     4.3    11.8    -      -       +      +
    332G  ASN      3.2     0.4    -      -       -      -
    333G  GLN*     1.3    78.1    -      -       -      +
    335G  THR*     1.3    60.8    +      -       -      +
    337G  CYS*     4.0     3.1    -      -       -      +
    338G  GLN*     3.0    34.6    +      -       +      +
    338L  GLN*     5.2     2.6    +      -       -      -
    339L  GLN*     4.6     6.9    -      -       +      +
    342L  ASP*     3.2    48.8    +      -       +      +
    512L  LYS*     4.9     9.5    -      -       -      +
    514L  LEU*     5.9     2.8    -      -       -      +
    516L  LYS*     4.3    20.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 335 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270G  TRP*     3.6    23.6    -      -       +      -
    332G  ASN*     3.1    30.8    +      -       +      +
    334G  LYS*     1.3    77.9    -      -       -      +
    336G  ILE*     1.3    66.1    +      -       -      +
    338G  GLN*     3.1    16.0    +      -       +      +
    339G  GLN*     3.2    11.4    +      -       -      +
    331H  LYS      5.7     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 336 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268G  VAL*     3.9    20.4    -      -       +      -
    269G  SER      4.6     0.9    -      -       -      +
    270G  TRP*     3.6    46.3    -      -       +      +
    273G  VAL*     3.6    33.5    -      -       +      +
    274G  THR*     5.3     1.6    +      -       -      -
    327G  PHE*     3.5    26.2    -      -       +      -
    330G  SER*     3.3    26.2    -      -       -      +
    332G  ASN*     3.0    12.9    +      -       +      +
    335G  THR*     1.3    76.7    -      -       -      +
    337G  CYS*     1.3    63.5    +      -       -      +
    338G  GLN      3.4     0.2    +      -       -      -
    339G  GLN*     3.6     4.5    +      -       -      +
    340G  ALA*     3.5    16.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 337 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273G  VAL*     4.2    14.4    -      -       -      -
    285G  VAL*     4.3     9.9    -      -       +      +
    288G  LEU*     3.4    15.8    -      -       +      +
    289G  LEU*     3.6    28.9    -      -       +      -
    292G  TYR*     4.7     1.3    -      -       -      -
    327G  PHE*     3.5    30.1    -      -       -      -
    333G  GLN      3.6     9.2    +      -       -      +
    334G  LYS*     4.3     3.1    -      -       -      +
    335G  THR      3.3     0.4    -      -       -      -
    336G  ILE*     1.3    76.8    -      -       -      +
    338G  GLN*     1.3    64.8    +      -       -      +
    340G  ALA*     3.3    10.1    +      -       -      +
    341G  VAL*     3.0    27.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 338 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285G  VAL*     3.3    37.0    -      -       +      +
    334G  LYS*     3.0    28.3    +      -       +      +
    335G  THR*     3.1    12.3    +      -       +      +
    337G  CYS*     1.3    77.6    -      -       -      +
    339G  GLN*     1.3    63.6    +      -       -      +
    341G  VAL*     3.1    21.0    +      -       -      +
    342G  ASP*     3.0    37.7    +      -       -      +
    334H  LYS*     5.3     4.3    +      -       -      +
    514L  LEU*     5.2    10.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 339 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270G  TRP*     3.1    31.0    -      -       +      +
    274G  THR*     4.2     8.1    +      -       -      +
    335G  THR      3.2     8.1    +      -       -      +
    336G  ILE      3.9     6.7    -      -       -      +
    338G  GLN*     1.3    79.2    -      -       -      +
    340G  ALA*     1.3    60.9    +      -       -      +
    342G  ASP*     3.2    13.4    +      -       +      +
    343G  THR*     2.9    26.3    +      -       -      +
    289H  LEU*     5.6     0.8    -      -       +      +
    328H  ALA      5.4     0.3    -      -       -      +
    330H  SER      3.1    20.4    +      -       -      +
    331H  LYS      3.3    12.3    +      -       -      -
    332H  ASN*     4.0     0.2    -      -       -      +
    333H  GLN*     3.0    56.8    +      -       +      +
    334H  LYS*     5.2     5.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 340 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273G  VAL*     4.1     3.8    -      -       +      +
    274G  THR*     3.9    20.3    +      -       -      +
    277G  ALA*     3.6    14.6    -      -       +      +
    288G  LEU*     3.4    17.9    -      -       +      -
    336G  ILE      3.5    11.1    +      -       -      +
    337G  CYS*     3.3    11.4    +      -       -      +
    338G  GLN      3.1     0.6    -      -       -      -
    339G  GLN*     1.3    79.3    -      -       -      +
    341G  VAL*     1.3    63.7    +      -       -      +
    343G  THR*     3.0    11.4    +      -       -      -
    344G  VAL*     2.9    27.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 341 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282G  CYS      4.3     0.9    -      -       -      +
    283G  ASP*     3.4    30.5    -      -       -      +
    284G  ASP      3.1    28.7    -      -       -      +
    285G  VAL*     3.7    20.4    -      -       +      -
    288G  LEU*     3.9     5.6    -      -       +      -
    337G  CYS      3.0    17.9    -      -       -      +
    338G  GLN*     3.1    10.1    +      -       -      +
    340G  ALA*     1.3    76.8    -      -       -      +
    342G  ASP*     1.3    57.8    +      -       -      +
    344G  VAL*     3.0    11.6    +      -       -      +
    345G  LEU*     2.9    38.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 342 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338G  GLN*     3.0    35.8    +      -       -      +
    339G  GLN*     3.2    13.2    +      -       +      +
    341G  VAL*     1.3    77.4    -      -       -      +
    343G  THR*     1.3    57.5    +      -       -      +
    345G  LEU*     3.8    10.8    -      -       -      +
    346G  ALA*     2.8    30.2    +      -       -      +
    286H  LEU*     3.7    27.0    -      -       +      +
    289H  LEU*     4.2    11.9    -      -       +      -
    334H  LYS*     3.8    33.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 343 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274G  THR*     3.5    23.7    -      -       +      +
    278G  MET*     3.5    31.8    -      -       +      +
    339G  GLN*     2.9    14.9    +      -       -      +
    340G  ALA      3.0     9.1    +      -       -      -
    342G  ASP*     1.3    76.9    -      -       -      +
    344G  VAL*     1.3    61.9    +      -       -      +
    346G  ALA*     3.4     7.0    -      -       -      +
    347G  LYS*     3.1    16.6    +      -       -      +
    289H  LEU*     4.7     1.4    -      -       -      +
    293H  LEU*     3.8    23.5    -      -       +      +
    333H  GLN*     3.5    18.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 344 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277G  ALA*     3.7    27.6    -      -       +      +
    278G  MET*     4.3     8.5    -      -       -      +
    281G  LYS*     3.6    22.2    -      -       +      +
    282G  CYS      3.2    24.5    -      -       -      +
    283G  ASP*     4.0     4.7    -      -       -      +
    340G  ALA      2.9    20.7    +      -       -      +
    341G  VAL      3.0     6.7    +      -       -      +
    343G  THR*     1.3    74.7    -      -       -      +
    345G  LEU*     1.3    67.2    +      -       -      +
    347G  LYS*     3.1    18.6    +      -       -      +
    348G  LYS*     3.3    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 345 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283G  ASP*     3.9    30.1    -      -       +      +
    341G  VAL*     2.9    30.4    +      -       +      +
    342G  ASP*     4.0    10.8    -      -       -      +
    344G  VAL*     1.3    76.1    -      -       -      +
    346G  ALA*     1.3    57.6    +      -       -      +
    348G  LYS*     3.4    14.9    +      -       +      +
    349G  ARG*     2.8    31.4    +      -       -      +
    466G  ASP*     4.9     1.4    -      -       -      +
    511G  LYS*     4.3    26.5    -      -       +      +
    286H  LEU*     4.3    24.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 346 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342G  ASP      2.8    20.3    +      -       -      +
    343G  THR*     3.4    11.9    -      -       -      +
    344G  VAL      3.1     0.4    -      -       -      -
    345G  LEU*     1.3    76.0    -      -       -      +
    347G  LYS*     1.3    64.7    +      -       -      +
    349G  ARG*     3.1    10.0    +      -       -      +
    350G  VAL*     3.0    28.7    +      -       -      +
    286H  LEU*     3.6    21.3    -      -       -      +
    289H  LEU*     4.4     6.5    -      -       +      -
    290H  GLY*     3.7    18.2    -      -       -      +
    293H  LEU*     4.8     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 347 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278G  MET*     3.9    26.5    -      -       +      +
    343G  THR      3.1    11.9    +      -       -      +
    344G  VAL*     3.1    12.1    +      -       +      +
    346G  ALA*     1.3    76.3    -      -       -      +
    348G  LYS*     1.3    58.0    +      -       +      +
    350G  VAL*     3.0    10.4    +      -       +      +
    351G  ASP*     2.7    56.9    +      -       -      +
    290H  GLY*     5.7     0.9    -      -       -      -
    294H  GLU*     4.6    15.6    +      -       -      +
    304H  LYS*     5.6     5.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 348 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281G  LYS*     3.7    23.5    +      -       -      +
    283G  ASP*     4.4    12.1    -      -       -      +
    344G  VAL*     3.3    35.5    +      -       -      +
    345G  LEU*     3.8    17.0    -      -       +      +
    347G  LYS*     1.3    79.3    -      -       +      +
    349G  ARG*     1.3    63.9    +      -       -      +
    351G  ASP*     4.0     8.7    -      -       -      +
    352G  SER*     3.1    27.5    +      -       -      -
    466G  ASP*     4.1    16.7    -      -       +      +
    467G  GLN*     5.5     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 349 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345G  LEU*     2.8    15.1    +      -       -      +
    346G  ALA*     3.1    17.0    +      -       -      +
    348G  LYS*     1.3    77.1    -      -       -      +
    350G  VAL*     1.3    56.4    +      -       -      +
    352G  SER*     3.0    13.0    +      -       -      -
    353G  LEU*     4.0     6.8    -      -       -      +
    465G  ILE*     3.1    17.8    -      -       -      +
    466G  ASP*     2.9    29.0    +      -       -      -
    511G  LYS*     3.5    17.2    -      -       -      +
    516G  LYS*     2.9    35.8    +      -       -      +
    517G  ARG*     3.1    27.8    +      -       -      +
    284H  ASP*     4.5     0.9    +      -       -      -
    286H  LEU*     3.2    37.0    -      -       -      +
    287H  LEU*     3.6    38.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 350 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346G  ALA      3.0    16.7    +      -       -      +
    347G  LYS*     3.0    10.1    +      -       +      +
    349G  ARG*     1.3    77.3    -      -       -      +
    351G  ASP*     1.3    62.5    +      -       -      +
    352G  SER      3.1     1.6    -      -       -      -
    353G  LEU*     2.9    22.5    +      -       -      +
    354G  GLN*     3.1    42.2    +      -       +      +
    287H  LEU*     4.6     9.2    -      -       +      +
    290H  GLY*     3.9    27.8    -      -       -      +
    291H  MET*     3.7    20.9    -      -       +      +
    294H  GLU*     4.3    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 351 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347G  LYS*     2.7    53.9    +      -       -      +
    348G  LYS*     3.4     7.3    +      -       -      +
    350G  VAL*     1.3    78.4    -      -       -      +
    352G  SER*     1.3    58.3    +      -       -      +
    353G  LEU      3.0     5.4    +      -       -      -
    354G  GLN*     4.5     2.8    -      -       -      +
    355G  LEU*     3.3    56.3    +      -       +      +
    360G  MET*     4.0     8.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 352 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348G  LYS      3.1    12.8    +      -       -      -
    349G  ARG      3.0    19.6    +      -       -      -
    351G  ASP*     1.3    75.9    -      -       -      +
    353G  LEU*     1.3    63.8    +      -       -      +
    355G  LEU      4.9     2.9    -      -       -      +
    360G  MET*     4.2    20.3    -      -       -      +
    466G  ASP*     3.1    37.7    +      -       -      -
    467G  GLN      5.5     1.6    -      -       -      -
    517G  ARG*     4.1     5.4    +      -       -      -
    519G  GLN*     5.1     3.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 353 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349G  ARG      4.0     4.3    -      -       -      +
    350G  VAL*     2.9     7.2    +      -       +      +
    352G  SER*     1.3    88.1    -      -       -      +
    354G  GLN*     1.3    66.7    +      -       +      +
    355G  LEU      3.9     2.5    -      -       -      +
    517G  ARG*     3.2    33.9    -      -       -      +
    519G  GLN*     6.0     2.5    -      -       +      -
    287H  LEU*     3.8    29.8    -      -       +      -
    291H  MET*     6.3     1.1    -      -       -      -
    310H  GLN*     5.0     7.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 354 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350G  VAL*     3.1    37.9    +      -       +      +
    351G  ASP*     5.0     2.0    -      -       -      -
    353G  LEU*     1.3    83.5    -      -       +      +
    355G  LEU*     1.3    69.9    +      -       +      +
    356G  THR*     3.5     5.7    +      -       -      +
    359G  GLN*     4.6     0.9    -      -       -      +
    291H  MET*     4.0    12.3    -      -       +      +
    294H  GLU*     3.5    20.0    +      -       -      -
    304H  LYS*     3.9    21.9    -      -       -      +
    309H  GLU*     4.7     6.9    -      -       -      +
    310H  GLN*     3.4    41.4    +      -       +      +
    313H  HIS*     5.7     2.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 355 (chain G). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351G  ASP*     3.3    48.2    +      -       +      +
    352G  SER      4.9     1.0    -      -       -      +
    353G  LEU      4.6     2.6    -      -       -      +
    354G  GLN*     1.3    83.1    +      -       +      +
    356G  THR*     1.3    70.4    +      -       -      +
    357G  ARG      3.8     0.2    +      -       -      -
    359G  GLN*     3.4    31.6    -      -       +      +
    360G  MET*     3.8    14.3    -      -       +      +
    363G  ASN*     3.6    26.7    -      -       -      +
----------------------------------------------------------
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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