Contacts of the helix formed by residues 332 - 355 (chain D) 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 D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339C  GLN*     4.0     0.4    -      -       -      +
    270D  TRP*     5.1     6.7    -      -       +      -
    330D  SER*     3.2     9.7    +      -       -      +
    331D  LYS*     1.3    94.5    -      -       -      +
    333D  GLN*     1.3    63.2    +      -       -      +
    334D  LYS      3.2     2.7    -      -       -      -
    335D  THR*     3.6    28.2    +      -       +      +
    336D  ILE*     3.0    28.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 333 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274C  THR*     5.0     8.4    +      -       -      +
    339C  GLN*     2.9    40.5    -      -       +      +
    343C  THR*     3.5    23.8    +      -       -      +
    289D  LEU*     3.2    26.3    -      -       +      +
    293D  LEU*     3.8    22.4    -      -       -      +
    296D  GLN*     4.9     0.2    -      -       -      +
    327D  PHE*     3.3    39.6    -      -       +      +
    328D  ALA*     3.0    28.9    -      -       -      +
    330D  SER*     3.6     6.2    -      -       -      +
    332D  ASN*     1.3    76.9    -      -       -      +
    334D  LYS*     1.3    58.8    +      -       -      +
    337D  CYS*     3.6     9.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 334 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338C  GLN*     5.0     5.3    +      -       -      +
    339C  GLN*     4.5     6.5    -      -       +      +
    342C  ASP*     3.8    35.3    +      -       +      +
    512C  LYS*     4.7    19.6    -      -       -      +
    514C  LEU*     5.7     4.1    -      -       -      +
    516C  LYS*     4.8     9.4    -      -       -      +
    285D  VAL*     4.2    23.8    -      -       +      +
    286D  LEU*     4.6     7.0    -      -       +      -
    289D  LEU*     4.3    16.3    -      -       +      +
    332D  ASN      3.2     0.4    -      -       -      -
    333D  GLN*     1.3    77.2    -      -       -      +
    335D  THR*     1.3    60.2    +      -       -      +
    337D  CYS*     4.0     2.9    -      -       -      +
    338D  GLN*     3.0    33.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 335 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270D  TRP*     3.6    22.9    -      -       +      -
    332D  ASN*     3.1    31.7    +      -       +      +
    334D  LYS*     1.3    77.9    -      -       -      +
    336D  ILE*     1.3    64.8    +      -       -      +
    338D  GLN*     3.1    16.8    +      -       +      +
    339D  GLN*     3.2    10.9    +      -       -      +
    331E  LYS      5.6     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 336 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268D  VAL*     3.9    21.1    -      -       +      -
    269D  SER      4.6     0.4    -      -       -      +
    270D  TRP*     3.6    45.3    -      -       +      +
    273D  VAL*     3.6    33.8    -      -       +      +
    274D  THR*     5.3     1.6    +      -       -      -
    327D  PHE*     3.5    26.0    -      -       +      -
    330D  SER*     3.3    26.5    -      -       -      +
    332D  ASN*     3.0    14.4    +      -       +      +
    335D  THR*     1.3    76.3    -      -       -      +
    337D  CYS*     1.3    61.7    +      -       -      +
    338D  GLN      3.4     0.2    +      -       -      -
    339D  GLN*     3.6     4.9    +      -       -      +
    340D  ALA*     3.5    16.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 337 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273D  VAL*     4.2    14.6    -      -       -      -
    285D  VAL*     4.3     9.2    -      -       +      +
    288D  LEU*     3.4    15.7    -      -       +      +
    289D  LEU*     3.6    30.1    -      -       +      -
    292D  TYR*     4.7     1.8    -      -       -      -
    327D  PHE*     3.5    29.4    -      -       -      -
    333D  GLN      3.6     9.5    +      -       -      +
    334D  LYS*     4.3     3.1    -      -       -      +
    335D  THR      3.3     0.4    -      -       -      -
    336D  ILE*     1.3    77.0    -      -       -      +
    338D  GLN*     1.3    65.5    +      -       -      +
    339D  GLN      3.4     0.2    -      -       -      -
    340D  ALA*     3.3     9.6    +      -       -      +
    341D  VAL*     3.0    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 338 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    514C  LEU*     4.9    10.7    -      -       -      +
    285D  VAL*     3.3    37.4    -      -       +      +
    334D  LYS*     3.0    27.4    +      -       +      +
    335D  THR*     3.1    12.1    +      -       +      +
    337D  CYS*     1.3    77.4    -      -       -      +
    339D  GLN*     1.3    63.4    +      -       -      +
    341D  VAL*     3.1    20.3    +      -       -      +
    342D  ASP*     3.0    39.1    +      -       -      +
    334E  LYS*     5.2     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 339 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270D  TRP*     3.1    29.6    -      -       +      +
    274D  THR*     4.2     7.3    +      -       -      +
    335D  THR      3.2     8.4    +      -       -      +
    336D  ILE      3.9     7.4    -      -       -      +
    337D  CYS      3.4     0.2    -      -       -      -
    338D  GLN*     1.3    79.3    -      -       -      +
    340D  ALA*     1.3    62.5    +      -       -      +
    342D  ASP*     3.2    13.6    +      -       +      +
    343D  THR*     2.9    24.4    +      -       -      +
    289E  LEU*     5.5     1.0    -      -       +      +
    330E  SER      3.1    12.9    +      -       -      +
    331E  LYS      3.0    22.6    +      -       -      +
    332E  ASN*     3.6     0.2    -      -       -      +
    333E  GLN*     2.8    55.9    -      -       +      +
    334E  LYS*     4.9     5.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 340 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273D  VAL*     4.1     4.3    -      -       +      +
    274D  THR*     3.9    20.6    +      -       -      +
    277D  ALA*     3.6    15.0    -      -       +      +
    288D  LEU*     3.4    17.7    -      -       +      -
    336D  ILE      3.5    10.4    +      -       -      +
    337D  CYS*     3.3    12.0    +      -       -      +
    338D  GLN      3.2     0.4    -      -       -      -
    339D  GLN*     1.3    78.7    -      -       -      +
    341D  VAL*     1.3    61.6    +      -       -      +
    343D  THR*     3.0    11.0    +      -       -      -
    344D  VAL*     2.9    26.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 341 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282D  CYS      4.3     1.1    -      -       -      +
    283D  ASP*     3.4    30.5    -      -       -      +
    284D  ASP      3.1    29.4    -      -       -      +
    285D  VAL*     3.7    21.3    -      -       +      -
    288D  LEU*     3.9     5.2    -      -       +      -
    337D  CYS      3.0    17.5    -      -       -      +
    338D  GLN*     3.3     9.4    -      -       -      +
    340D  ALA*     1.3    77.1    -      -       -      +
    342D  ASP*     1.3    58.1    +      -       -      +
    344D  VAL*     3.0    11.3    +      -       -      +
    345D  LEU*     2.9    39.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 342 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338D  GLN*     3.0    35.9    +      -       -      +
    339D  GLN*     3.2    12.5    +      -       +      +
    341D  VAL*     1.3    78.3    -      -       -      +
    343D  THR*     1.3    57.3    +      -       -      +
    345D  LEU*     3.5    10.2    +      -       -      +
    346D  ALA*     2.8    29.7    +      -       -      +
    516D  LYS*     5.9     0.2    -      -       -      -
    286E  LEU*     3.8    23.2    -      -       +      +
    289E  LEU*     4.1    12.3    -      -       +      -
    334E  LYS*     3.6    37.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 343 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274D  THR*     3.6    24.9    -      -       +      +
    278D  MET*     3.5    30.1    -      -       +      +
    339D  GLN      2.9    14.2    +      -       -      -
    340D  ALA      3.0     8.9    +      -       -      -
    342D  ASP*     1.3    75.4    -      -       -      +
    344D  VAL*     1.3    62.3    +      -       -      +
    346D  ALA*     3.4     6.8    -      -       -      +
    347D  LYS*     3.1    16.6    +      -       -      +
    289E  LEU*     4.4     4.6    -      -       -      +
    293E  LEU*     3.5    23.7    -      -       +      +
    333E  GLN*     3.2    19.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 344 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277D  ALA*     3.7    27.6    -      -       +      +
    278D  MET*     4.3     9.2    -      -       -      +
    281D  LYS*     3.6    22.4    -      -       -      +
    282D  CYS      3.2    24.9    -      -       -      +
    283D  ASP*     3.9     4.9    -      -       +      +
    340D  ALA      2.9    21.1    +      -       -      +
    341D  VAL      3.0     6.9    +      -       -      +
    343D  THR*     1.3    75.7    -      -       -      +
    345D  LEU*     1.3    65.4    +      -       -      +
    347D  LYS*     3.1    18.9    +      -       -      +
    348D  LYS*     3.3    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 345 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283D  ASP*     3.9    29.6    -      -       +      +
    341D  VAL*     2.9    30.5    +      -       +      +
    342D  ASP*     4.0    10.8    -      -       -      +
    344D  VAL*     1.3    77.3    -      -       -      +
    346D  ALA*     1.3    50.8    +      -       -      +
    348D  LYS*     3.4    14.3    +      -       +      +
    349D  ARG*     2.8    36.7    +      -       -      +
    466D  ASP*     4.9     1.6    -      -       -      +
    511D  LYS*     4.3    24.9    -      -       +      +
    286E  LEU*     4.1    24.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 346 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342D  ASP      2.8    20.4    +      -       -      +
    343D  THR*     3.4    11.4    -      -       -      +
    345D  LEU*     1.3    75.1    -      -       -      +
    347D  LYS*     1.3    65.8    +      -       -      +
    349D  ARG*     3.1     4.9    +      -       -      +
    350D  VAL*     3.0    29.4    +      -       -      +
    286E  LEU*     3.4    26.2    -      -       -      +
    289E  LEU*     4.1     7.4    -      -       +      -
    290E  GLY*     3.6    17.3    -      -       -      +
    293E  LEU*     4.8     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 347 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278D  MET*     3.9    27.1    -      -       +      +
    343D  THR      3.1    11.9    +      -       -      +
    344D  VAL*     3.1    11.9    +      -       +      +
    346D  ALA*     1.3    75.9    -      -       -      +
    348D  LYS*     1.3    57.4    +      -       +      +
    350D  VAL*     3.0    10.8    +      -       +      +
    351D  ASP*     2.7    56.1    +      -       -      +
    290E  GLY*     4.9     1.8    -      -       -      -
    294E  GLU*     4.3    19.7    +      -       +      +
    297E  TYR*     5.8     2.8    +      -       -      -
    304E  LYS*     5.7     4.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 348 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281D  LYS*     3.7    23.9    +      -       -      +
    283D  ASP*     4.4    12.6    -      -       +      +
    344D  VAL*     3.3    36.1    +      -       -      +
    345D  LEU*     3.8    17.5    -      -       +      +
    347D  LYS*     1.3    78.5    -      -       +      +
    349D  ARG*     1.3    61.7    +      -       -      +
    351D  ASP*     4.0     8.0    -      -       -      +
    352D  SER*     3.1    27.5    +      -       -      -
    466D  ASP*     4.1    17.3    -      -       +      +
    467D  GLN*     5.5     8.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 349 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345D  LEU      2.8    14.5    +      -       -      +
    346D  ALA*     3.2    16.6    -      -       -      +
    348D  LYS*     1.3    77.3    -      -       -      +
    350D  VAL*     1.3    56.2    +      -       -      +
    352D  SER*     3.0    13.7    +      -       -      -
    353D  LEU*     4.0     5.4    -      -       -      +
    465D  ILE*     3.1    17.0    -      -       -      +
    466D  ASP*     3.0    29.0    +      -       -      -
    511D  LYS*     3.5    16.8    -      -       -      +
    516D  LYS*     2.9    37.3    +      -       -      +
    517D  ARG*     3.1    26.9    +      -       -      +
    284E  ASP*     4.3     1.5    +      -       -      -
    286E  LEU*     3.1    36.4    -      -       -      +
    287E  LEU*     3.4    39.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 350 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    346D  ALA      3.0    15.8    +      -       -      +
    347D  LYS*     3.0    10.5    +      -       +      +
    349D  ARG*     1.3    78.4    -      -       -      +
    351D  ASP*     1.3    61.7    +      -       -      +
    352D  SER      3.1     2.0    -      -       -      -
    353D  LEU*     2.9    22.2    +      -       +      +
    354D  GLN*     3.1    42.4    +      -       +      +
    287E  LEU*     4.2     9.0    -      -       +      +
    290E  GLY*     3.7     7.0    -      -       -      -
    291E  MET*     3.4    43.3    -      -       +      +
    294E  GLU*     4.3    10.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 351 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347D  LYS*     2.7    54.3    +      -       -      +
    348D  LYS*     3.4     7.5    +      -       -      +
    350D  VAL*     1.3    78.2    -      -       -      +
    352D  SER*     1.3    57.7    +      -       -      +
    353D  LEU      3.0     5.2    +      -       -      -
    354D  GLN*     4.5     3.1    -      -       -      +
    355D  LEU*     3.3    57.2    +      -       +      +
    360D  MET*     4.0     9.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 352 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348D  LYS      3.1    12.6    +      -       -      -
    349D  ARG      3.0    19.1    +      -       -      -
    351D  ASP*     1.3    74.6    -      -       -      +
    353D  LEU*     1.3    63.7    +      -       -      +
    355D  LEU      4.9     2.9    -      -       -      +
    360D  MET*     4.2    20.6    -      -       -      +
    466D  ASP*     3.1    38.6    +      -       -      -
    467D  GLN      5.5     1.6    -      -       -      -
    517D  ARG*     4.1     5.5    +      -       -      -
    519D  GLN*     5.1     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 353 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349D  ARG      4.0     4.0    -      -       -      +
    350D  VAL      2.9     6.7    +      -       -      +
    352D  SER*     1.3    89.1    -      -       -      +
    354D  GLN*     1.3    67.7    +      -       +      +
    355D  LEU      4.6     2.1    -      -       -      +
    517D  ARG*     3.2    33.0    -      -       -      +
    519D  GLN*     5.8     2.9    -      -       +      +
    287E  LEU*     3.6    33.0    -      -       +      -
    291E  MET*     6.3     0.9    -      -       -      -
    310E  GLN*     5.0     6.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 354 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350D  VAL*     3.1    39.3    +      -       +      +
    351D  ASP*     5.0     2.0    -      -       -      +
    353D  LEU*     1.3    81.2    -      -       +      +
    355D  LEU*     1.3    68.8    +      -       +      +
    356D  THR*     3.5     5.5    +      -       -      +
    359D  GLN*     4.6     1.2    -      -       -      +
    291E  MET*     3.6    13.8    -      -       +      +
    294E  GLU*     3.4    21.1    +      -       -      -
    304E  LYS*     4.1    21.1    -      -       -      +
    309E  GLU*     5.0     4.9    -      -       -      +
    310E  GLN*     3.2    45.1    +      -       +      +
    313E  HIS*     5.5     2.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 355 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    351D  ASP*     3.3    48.5    +      -       +      +
    352D  SER      4.9     0.9    -      -       -      -
    353D  LEU      4.6     2.4    -      -       -      +
    354D  GLN*     1.3    83.0    +      -       +      +
    356D  THR*     1.3    70.3    +      -       -      +
    357D  ARG      3.8     0.2    +      -       -      -
    359D  GLN*     3.4    30.3    -      -       +      +
    360D  MET*     3.8    15.0    -      -       +      +
    363D  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