Contacts of the helix formed by residues 332 - 355 (chain F) 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 F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339E  GLN*     4.1     0.4    -      -       -      +
    270F  TRP*     5.1     6.7    -      -       +      -
    330F  SER*     3.2     9.9    +      -       -      +
    331F  LYS*     1.3    93.9    -      -       -      +
    333F  GLN*     1.3    63.2    +      -       -      +
    334F  LYS      3.2     2.9    -      -       -      +
    335F  THR*     3.6    28.2    +      -       +      +
    336F  ILE*     3.0    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 333 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274E  THR*     5.3     7.3    +      -       -      +
    339E  GLN*     3.2    32.1    -      -       +      +
    343E  THR*     3.5    23.4    +      -       -      +
    289F  LEU*     3.2    28.5    -      -       +      +
    293F  LEU*     3.8    25.0    -      -       -      +
    327F  PHE*     3.3    38.5    -      -       +      +
    328F  ALA*     3.0    28.8    -      -       -      +
    330F  SER*     3.6     7.2    -      -       -      +
    332F  ASN*     1.3    76.9    -      -       -      +
    334F  LYS*     1.3    59.5    -      -       -      +
    337F  CYS*     3.6    10.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 334 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338E  GLN*     5.3     3.0    +      -       -      +
    339E  GLN*     4.9     5.2    -      -       +      +
    342E  ASP*     3.9    36.5    +      -       +      +
    512E  LYS*     4.6    12.3    -      -       -      +
    514E  LEU*     5.5     4.5    -      -       -      +
    516E  LYS*     4.5    19.1    -      -       -      +
    285F  VAL*     4.2    24.6    -      -       +      +
    286F  LEU*     4.6     7.4    -      -       +      -
    289F  LEU*     4.6    16.6    -      -       +      -
    332F  ASN*     3.2     0.6    -      -       -      +
    333F  GLN*     1.3    78.3    -      -       -      +
    335F  THR*     1.3    61.0    +      -       -      +
    337F  CYS*     4.3     2.0    -      -       -      -
    338F  GLN*     3.0    33.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 335 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331A  LYS      5.5     1.6    -      -       -      +
    270F  TRP*     3.6    22.8    -      -       +      -
    332F  ASN*     3.1    31.3    +      -       +      +
    334F  LYS*     1.3    77.9    -      -       -      +
    336F  ILE*     1.3    64.9    +      -       -      +
    338F  GLN*     3.1    16.7    +      -       +      +
    339F  GLN*     3.2    11.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 336 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268F  VAL*     3.9    20.6    -      -       +      -
    269F  SER      4.6     0.7    -      -       -      +
    270F  TRP*     3.6    45.9    -      -       +      +
    273F  VAL*     3.6    33.3    -      -       +      +
    274F  THR*     5.3     1.7    +      -       -      -
    327F  PHE*     3.5    25.8    -      -       +      -
    330F  SER*     3.3    26.0    -      -       -      +
    332F  ASN*     3.0    13.3    +      -       +      +
    335F  THR*     1.3    77.1    -      -       -      +
    337F  CYS*     1.3    61.4    +      -       -      +
    338F  GLN      3.4     0.2    +      -       -      -
    339F  GLN*     3.6     4.9    +      -       -      +
    340F  ALA*     3.5    16.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 337 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273F  VAL*     4.2    14.6    -      -       -      -
    285F  VAL*     4.3     9.9    -      -       +      +
    288F  LEU*     3.4    16.2    -      -       +      +
    289F  LEU*     3.6    28.7    -      -       +      -
    292F  TYR*     4.7     1.8    -      -       -      -
    327F  PHE*     3.5    29.6    -      -       -      -
    333F  GLN      3.6    10.1    +      -       -      +
    334F  LYS*     4.3     3.1    -      -       -      +
    335F  THR      3.3     0.2    -      -       -      -
    336F  ILE*     1.3    77.2    -      -       -      +
    338F  GLN*     1.3    65.9    +      -       -      +
    340F  ALA*     3.3     9.4    +      -       -      +
    341F  VAL*     3.0    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 338 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334A  LYS*     5.2     4.5    +      -       -      +
    514E  LEU*     4.9    11.4    -      -       -      +
    285F  VAL*     3.3    38.1    -      -       +      +
    334F  LYS*     3.0    27.2    +      -       +      +
    335F  THR*     3.1    12.3    +      -       +      +
    337F  CYS*     1.3    77.1    -      -       -      +
    339F  GLN*     1.3    63.0    +      -       -      +
    341F  VAL*     3.1    20.4    +      -       -      +
    342F  ASP*     3.0    38.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 339 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289A  LEU*     6.2     0.4    -      -       +      -
    330A  SER      3.0    21.6    +      -       -      +
    331A  LYS      3.2    13.1    +      -       -      +
    332A  ASN*     3.8     0.2    -      -       -      +
    333A  GLN*     2.8    56.5    -      -       +      +
    334A  LYS*     5.0     5.6    -      -       +      +
    270F  TRP*     3.1    29.7    -      -       +      +
    274F  THR*     4.2     7.5    +      -       -      +
    335F  THR      3.2     8.6    +      -       -      +
    336F  ILE      3.9     7.1    -      -       -      +
    337F  CYS      3.4     0.2    -      -       -      -
    338F  GLN*     1.3    77.4    -      -       -      +
    340F  ALA*     1.3    60.5    +      -       -      +
    342F  ASP*     3.2    14.4    +      -       +      +
    343F  THR*     2.9    26.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 340 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273F  VAL*     4.1     4.5    -      -       +      +
    274F  THR*     3.9    19.7    +      -       -      +
    277F  ALA*     3.6    15.0    -      -       +      +
    288F  LEU*     3.4    17.7    -      -       +      -
    336F  ILE      3.5    10.2    +      -       -      +
    337F  CYS*     3.3    11.8    +      -       -      +
    338F  GLN      3.2     0.8    -      -       -      -
    339F  GLN*     1.3    79.3    -      -       -      +
    341F  VAL*     1.3    62.5    +      -       -      +
    343F  THR*     3.0    11.2    +      -       -      -
    344F  VAL*     2.9    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 341 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282F  CYS      4.3     0.7    -      -       -      +
    283F  ASP*     3.4    29.8    -      -       -      +
    284F  ASP      3.1    28.9    -      -       -      +
    285F  VAL*     3.7    20.4    -      -       +      -
    288F  LEU*     3.9     5.4    -      -       +      +
    337F  CYS      3.0    17.3    -      -       -      +
    338F  GLN*     3.1    10.1    +      -       -      +
    340F  ALA*     1.3    77.2    -      -       -      +
    342F  ASP*     1.3    58.5    +      -       -      +
    344F  VAL*     3.0    12.0    +      -       -      +
    345F  LEU*     2.9    38.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 342 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  LEU*     3.7    25.2    -      -       +      +
    289A  LEU*     4.0    14.3    -      -       +      +
    334A  LYS*     3.7    32.8    +      -       +      +
    338F  GLN*     3.0    35.5    +      -       -      +
    339F  GLN*     3.2    12.5    +      -       +      +
    341F  VAL*     1.3    77.1    -      -       -      +
    343F  THR*     1.3    56.7    +      -       -      +
    345F  LEU*     3.8    10.6    -      -       -      +
    346F  ALA*     2.8    30.0    +      -       -      +
    516F  LYS*     5.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 343 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289A  LEU*     4.6     1.6    -      -       -      +
    293A  LEU*     3.6    25.1    -      -       +      -
    333A  GLN*     3.3    20.0    +      -       -      +
    274F  THR*     3.6    23.9    -      -       +      +
    278F  MET*     3.6    31.1    -      -       +      +
    339F  GLN      2.9    14.6    +      -       -      -
    340F  ALA      3.0     8.8    +      -       -      -
    342F  ASP*     1.3    75.2    -      -       -      +
    344F  VAL*     1.3    62.7    +      -       -      +
    346F  ALA*     3.4     7.3    -      -       -      +
    347F  LYS*     3.1    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 344 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277F  ALA*     3.7    28.7    -      -       +      +
    278F  MET*     4.3     8.5    -      -       -      +
    281F  LYS*     3.6    22.4    -      -       +      +
    282F  CYS      3.2    24.5    -      -       -      +
    283F  ASP*     3.9     4.5    -      -       +      +
    340F  ALA      2.9    21.1    +      -       -      +
    341F  VAL      3.2     7.2    -      -       -      +
    343F  THR*     1.3    76.0    -      -       -      +
    345F  LEU*     1.3    65.8    +      -       -      +
    347F  LYS*     3.1    19.3    +      -       +      +
    348F  LYS*     3.3    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 345 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  LEU*     4.2    25.6    -      -       +      -
    283F  ASP*     3.9    28.7    -      -       +      +
    341F  VAL*     2.9    31.1    +      -       +      +
    342F  ASP*     4.0     9.9    -      -       -      +
    344F  VAL*     1.3    76.7    -      -       -      +
    346F  ALA*     1.3    52.1    +      -       -      +
    348F  LYS*     3.4    14.7    +      -       +      +
    349F  ARG*     2.8    36.3    +      -       -      +
    466F  ASP*     4.9     1.4    -      -       -      +
    511F  LYS*     4.3    24.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 346 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  LEU*     3.5    25.5    -      -       -      +
    289A  LEU*     4.3     6.1    -      -       +      -
    290A  GLY*     3.6    17.9    -      -       -      +
    293A  LEU*     4.8     1.1    -      -       +      -
    342F  ASP      2.8    20.6    +      -       -      +
    343F  THR*     3.4    11.7    -      -       -      +
    344F  VAL      3.1     0.2    -      -       -      -
    345F  LEU*     1.3    75.0    -      -       -      +
    347F  LYS*     1.3    64.9    +      -       -      +
    349F  ARG*     3.1     5.1    +      -       -      +
    350F  VAL*     3.0    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 347 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290A  GLY*     5.5     1.1    -      -       -      -
    294A  GLU*     4.3    20.0    +      -       +      +
    297A  TYR*     5.9     1.8    +      -       -      -
    304A  LYS*     5.5     5.7    -      -       -      +
    278F  MET*     3.9    26.5    -      -       +      +
    343F  THR      3.1    11.5    +      -       -      +
    344F  VAL*     3.1    12.4    +      -       +      +
    346F  ALA*     1.3    76.5    -      -       -      +
    348F  LYS*     1.3    58.0    +      -       +      +
    350F  VAL*     3.0     9.8    +      -       +      +
    351F  ASP*     2.7    55.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 348 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281F  LYS*     3.7    23.7    +      -       -      +
    283F  ASP*     4.4    12.2    -      -       +      +
    344F  VAL*     3.3    36.6    +      -       -      +
    345F  LEU*     3.8    16.8    -      -       +      +
    347F  LYS*     1.3    78.0    -      -       +      +
    349F  ARG*     1.3    63.7    +      -       -      +
    351F  ASP*     4.0     8.5    -      -       -      +
    352F  SER*     3.1    27.9    +      -       -      -
    466F  ASP*     4.1    17.3    -      -       +      +
    467F  GLN*     5.5     8.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 349 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284A  ASP*     4.4     1.1    +      -       -      -
    286A  LEU*     3.1    37.1    -      -       -      +
    287A  LEU*     3.5    39.3    -      -       +      +
    345F  LEU*     2.8    15.5    +      -       -      +
    346F  ALA*     3.1    17.7    +      -       -      +
    348F  LYS*     1.3    76.6    -      -       -      +
    350F  VAL*     1.3    57.3    +      -       -      +
    352F  SER*     3.0    13.9    +      -       -      -
    353F  LEU*     4.0     6.1    -      -       -      +
    465F  ILE*     3.1    17.0    -      -       -      +
    466F  ASP*     3.0    29.7    +      -       -      -
    511F  LYS*     3.5    16.0    -      -       -      +
    516F  LYS*     2.9    35.8    +      -       -      +
    517F  ARG*     3.1    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 350 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  LEU*     4.4     8.1    -      -       +      +
    290A  GLY*     3.8     7.4    -      -       -      +
    291A  MET*     3.5    42.2    -      -       +      +
    294A  GLU*     4.3    11.2    -      -       +      +
    346F  ALA      3.0    15.4    +      -       -      +
    347F  LYS*     3.0    10.5    +      -       +      +
    349F  ARG*     1.3    76.8    -      -       +      +
    351F  ASP*     1.3    64.0    +      -       -      +
    352F  SER      3.1     1.8    -      -       -      -
    353F  LEU*     2.9    22.4    +      -       +      +
    354F  GLN*     3.1    42.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 351 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347F  LYS*     2.7    53.7    +      -       -      +
    348F  LYS*     3.9     7.7    +      -       -      +
    350F  VAL*     1.3    77.8    -      -       -      +
    352F  SER*     1.3    57.0    +      -       -      +
    353F  LEU      3.0     5.2    +      -       -      -
    354F  GLN*     4.5     3.9    -      -       -      +
    355F  LEU*     3.3    56.5    +      -       +      +
    360F  MET*     4.0     8.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 352 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348F  LYS      3.1    12.2    +      -       -      -
    349F  ARG      3.0    19.2    +      -       -      -
    351F  ASP*     1.3    75.9    -      -       -      +
    353F  LEU*     1.3    64.6    +      -       -      +
    355F  LEU      4.9     2.7    -      -       -      -
    360F  MET*     4.2    19.8    -      -       -      +
    466F  ASP*     3.1    38.2    +      -       -      -
    467F  GLN      5.5     1.6    -      -       -      -
    517F  ARG*     4.1     5.4    +      -       -      -
    519F  GLN*     5.1     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 353 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  LEU*     3.8    31.0    -      -       +      -
    291A  MET*     6.3     1.3    -      -       -      -
    310A  GLN*     4.9     7.4    +      -       -      +
    349F  ARG      4.0     4.0    -      -       -      +
    350F  VAL*     2.9     6.4    +      -       +      +
    352F  SER*     1.3    88.0    -      -       -      +
    354F  GLN*     1.3    67.5    +      -       +      +
    355F  LEU      4.6     2.1    -      -       -      +
    517F  ARG*     3.2    33.4    -      -       -      +
    519F  GLN*     6.0     2.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 354 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291A  MET*     3.8    13.7    -      -       +      +
    294A  GLU*     3.5    19.8    +      -       -      -
    304A  LYS*     4.0    22.4    -      -       -      +
    309A  GLU*     4.8     6.6    -      -       -      +
    310A  GLN*     3.2    46.3    +      -       +      +
    313A  HIS*     5.6     2.5    -      -       -      +
    350F  VAL*     3.1    38.3    +      -       +      +
    351F  ASP*     4.9     2.0    -      -       -      +
    353F  LEU*     1.3    81.1    -      -       +      +
    355F  LEU*     1.3    69.2    +      -       +      +
    356F  THR*     3.5     5.2    +      -       -      +
    359F  GLN*     4.7     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 355 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  GLU*     6.2     0.2    -      -       -      +
    351F  ASP*     3.3    47.8    +      -       +      +
    352F  SER      4.9     0.7    -      -       -      -
    353F  LEU      4.6     2.8    -      -       -      +
    354F  GLN*     1.3    83.2    +      -       +      +
    356F  THR*     1.3    71.0    +      -       -      +
    357F  ARG      3.8     0.2    +      -       -      -
    359F  GLN*     3.4    30.7    -      -       +      +
    360F  MET*     3.8    15.8    -      -       +      +
    363F  ASN*     3.6    26.2    -      -       -      +
----------------------------------------------------------
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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
------------------------------------------------------------
  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