Contacts of the helix formed by residues 332 - 355 (chain L) 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 L).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339K  GLN*     3.7     0.7    -      -       -      +
    270L  TRP*     5.1     6.1    -      -       +      -
    330L  SER*     3.2     9.5    +      -       -      +
    331L  LYS*     1.3    94.6    -      -       -      +
    333L  GLN*     1.3    64.3    +      -       -      +
    334L  LYS      3.2     2.9    -      -       -      +
    335L  THR*     3.6    29.1    +      -       +      +
    336L  ILE*     3.0    28.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 333 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274K  THR*     4.8     8.6    +      -       -      +
    339K  GLN*     2.8    36.6    +      -       +      +
    343K  THR*     3.3    26.3    +      -       -      +
    289L  LEU*     3.2    26.9    -      -       +      +
    293L  LEU*     3.8    23.6    -      -       -      +
    327L  PHE*     3.3    39.4    -      -       +      +
    328L  ALA*     3.0    28.2    -      -       -      +
    330L  SER*     3.6     6.4    -      -       -      +
    332L  ASN*     1.3    73.1    -      -       -      +
    334L  LYS*     1.3    58.5    +      -       -      +
    337L  CYS*     3.6     9.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 334 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338K  GLN*     5.0     4.2    +      -       -      +
    339K  GLN*     4.5     6.3    -      -       +      +
    342K  ASP*     3.5    40.8    +      -       +      +
    512K  LYS*     4.7    13.5    -      -       -      +
    514K  LEU*     5.8     3.7    -      -       -      +
    516K  LYS*     4.5    17.5    -      -       -      +
    285L  VAL*     4.2    23.7    -      -       +      +
    286L  LEU*     4.6     6.3    -      -       +      -
    289L  LEU*     4.3    16.5    -      -       +      +
    332L  ASN*     3.2     0.8    -      -       -      +
    333L  GLN*     1.3    77.2    -      -       -      +
    335L  THR*     1.3    60.6    +      -       -      +
    336L  ILE      3.5     0.2    -      -       -      -
    337L  CYS*     4.0     2.9    -      -       -      +
    338L  GLN*     3.0    34.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 335 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270L  TRP*     3.6    22.9    -      -       +      -
    332L  ASN*     3.1    30.6    +      -       +      +
    334L  LYS*     1.3    77.9    -      -       -      +
    336L  ILE*     1.3    66.3    +      -       -      +
    338L  GLN*     3.1    16.3    +      -       +      +
    339L  GLN*     3.2    11.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 336 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268L  VAL*     3.9    21.3    -      -       +      -
    269L  SER      4.6     0.9    -      -       -      +
    270L  TRP*     3.6    45.8    -      -       +      +
    273L  VAL*     3.6    33.6    -      -       +      +
    274L  THR*     5.3     1.6    +      -       -      -
    327L  PHE*     3.5    25.4    -      -       +      -
    330L  SER*     3.3    26.5    -      -       -      +
    332L  ASN*     3.0    12.9    +      -       +      +
    335L  THR*     1.3    76.3    -      -       -      +
    337L  CYS*     1.3    62.3    +      -       -      +
    338L  GLN      3.4     0.2    +      -       -      -
    339L  GLN*     3.6     5.0    +      -       -      +
    340L  ALA*     3.5    16.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 337 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273L  VAL*     4.2    13.7    -      -       -      -
    285L  VAL*     4.3     9.4    -      -       +      +
    288L  LEU*     3.4    15.7    -      -       +      +
    289L  LEU*     3.6    30.3    -      -       +      -
    292L  TYR*     4.7     1.8    -      -       -      -
    327L  PHE*     3.5    29.4    -      -       -      -
    333L  GLN      3.6    10.3    +      -       -      +
    334L  LYS*     4.3     3.1    -      -       -      +
    335L  THR      3.3     0.4    -      -       -      -
    336L  ILE*     1.3    76.9    -      -       -      +
    338L  GLN*     1.3    64.8    +      -       -      +
    340L  ALA*     3.3     9.8    +      -       -      +
    341L  VAL*     3.0    28.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 338 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334G  LYS*     5.2     2.8    +      -       -      -
    514K  LEU*     4.8    13.0    -      -       -      +
    285L  VAL*     3.3    38.1    -      -       +      +
    334L  LYS*     3.0    27.5    +      -       +      +
    335L  THR*     3.1    11.8    +      -       +      +
    337L  CYS*     1.3    76.9    -      -       -      +
    339L  GLN*     1.3    62.5    +      -       -      +
    341L  VAL*     3.1    20.5    +      -       -      +
    342L  ASP*     3.0    39.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 339 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289G  LEU*     6.6     0.2    -      -       +      -
    330G  SER      3.4    11.9    +      -       -      +
    331G  LYS      2.7    36.2    +      -       -      -
    332G  ASN*     3.4     0.8    -      -       -      +
    333G  GLN*     2.9    36.3    -      -       +      +
    334G  LYS*     4.6     7.6    -      -       +      +
    270L  TRP*     3.1    30.7    -      -       +      +
    274L  THR*     4.2     9.6    +      -       -      +
    335L  THR      3.2     8.0    +      -       -      +
    336L  ILE      3.6     7.1    +      -       -      +
    338L  GLN*     1.3    78.6    -      -       -      +
    340L  ALA*     1.3    63.0    +      -       -      +
    342L  ASP*     3.2    12.3    +      -       +      +
    343L  THR*     2.9    26.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 340 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273L  VAL*     4.1     4.0    -      -       +      +
    274L  THR*     4.0    21.9    +      -       -      +
    277L  ALA*     3.6    13.7    -      -       +      +
    288L  LEU*     3.4    17.7    -      -       +      -
    336L  ILE      3.5     9.8    +      -       -      +
    337L  CYS*     3.4    11.9    -      -       -      +
    339L  GLN*     1.3    79.7    -      -       -      +
    341L  VAL*     1.3    62.4    +      -       -      +
    343L  THR*     3.0    11.6    +      -       -      -
    344L  VAL*     2.9    26.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 341 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282L  CYS      4.3     0.7    -      -       -      +
    283L  ASP*     3.4    30.3    -      -       -      +
    284L  ASP      3.1    28.0    -      -       -      +
    285L  VAL*     3.7    21.5    -      -       +      -
    288L  LEU*     3.9     5.8    -      -       +      -
    337L  CYS      3.0    16.8    -      -       -      +
    338L  GLN*     3.1     9.4    +      -       -      +
    340L  ALA*     1.3    76.5    -      -       -      +
    342L  ASP*     1.3    58.2    +      -       -      +
    344L  VAL*     3.0    12.1    +      -       -      +
    345L  LEU*     2.9    38.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 342 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286G  LEU*     3.6    18.5    -      -       +      +
    289G  LEU*     3.8     8.0    -      -       +      +
    334G  LYS*     3.2    47.7    +      -       +      +
    338L  GLN*     3.0    36.4    +      -       -      +
    339L  GLN*     3.2    12.2    +      -       +      +
    341L  VAL*     1.3    77.0    -      -       -      +
    343L  THR*     1.3    57.9    +      -       -      +
    345L  LEU*     3.5     9.5    +      -       -      +
    346L  ALA*     2.8    29.5    +      -       -      +
    516L  LYS*     5.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 343 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289G  LEU*     4.3     4.8    -      -       -      +
    293G  LEU*     3.6    24.8    -      -       +      +
    333G  GLN*     3.2    20.1    +      -       -      +
    274L  THR*     3.6    23.4    -      -       +      +
    278L  MET*     3.5    28.4    -      -       +      +
    339L  GLN*     2.9    14.6    +      -       -      +
    340L  ALA      3.0     9.9    +      -       -      -
    342L  ASP*     1.3    73.8    -      -       -      +
    344L  VAL*     1.3    65.2    +      -       -      +
    346L  ALA*     3.4     7.2    -      -       -      +
    347L  LYS*     3.1    16.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 344 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277L  ALA*     3.7    28.3    -      -       +      +
    278L  MET*     4.3     9.0    -      -       -      +
    281L  LYS*     3.6    22.4    -      -       -      +
    282L  CYS      3.2    24.2    -      -       -      +
    283L  ASP*     3.9     4.9    -      -       +      +
    340L  ALA      2.9    21.1    +      -       -      +
    341L  VAL      3.0     6.5    +      -       -      +
    343L  THR*     1.3    75.9    -      -       -      +
    345L  LEU*     1.3    65.2    +      -       -      +
    347L  LYS*     3.1    19.7    +      -       +      +
    348L  LYS*     3.3    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 345 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286G  LEU*     3.9    25.4    -      -       +      -
    283L  ASP*     3.9    29.2    -      -       +      +
    341L  VAL*     2.9    30.2    +      -       +      +
    342L  ASP*     4.0    10.1    -      -       -      +
    344L  VAL*     1.3    75.0    -      -       -      +
    346L  ALA*     1.3    52.3    +      -       -      +
    348L  LYS*     3.4    15.6    +      -       +      +
    349L  ARG*     2.8    36.0    +      -       -      +
    466L  ASP*     5.0     1.6    -      -       -      +
    511L  LYS*     4.3    24.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 346 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286G  LEU*     3.4    25.5    -      -       -      +
    289G  LEU*     3.7    18.4    -      -       +      -
    290G  GLY*     3.7    10.8    -      -       -      +
    293G  LEU*     4.8     1.3    -      -       +      -
    342L  ASP      2.8    19.7    +      -       -      +
    343L  THR*     3.4     8.1    -      -       -      +
    344L  VAL      3.1     0.2    -      -       -      -
    345L  LEU*     1.3    75.4    -      -       -      +
    347L  LYS*     1.3    66.5    +      -       -      +
    349L  ARG*     3.1     5.4    +      -       -      +
    350L  VAL*     3.0    29.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 347 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290G  GLY*     4.8     2.4    -      -       -      -
    294G  GLU*     4.3    21.0    +      -       +      +
    297G  TYR*     5.5     6.5    +      -       -      -
    304G  LYS*     6.0     1.6    -      -       -      +
    278L  MET*     3.9    27.4    -      -       +      +
    343L  THR      3.1    11.4    +      -       -      +
    344L  VAL*     3.1    11.9    +      -       -      +
    346L  ALA*     1.3    76.3    -      -       -      +
    348L  LYS*     1.3    58.4    +      -       +      +
    350L  VAL*     3.0    10.7    +      -       +      +
    351L  ASP*     2.7    56.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 348 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    281L  LYS*     3.7    25.1    +      -       -      +
    283L  ASP*     4.4    12.3    -      -       -      +
    344L  VAL*     3.3    35.3    +      -       -      +
    345L  LEU*     3.7    17.0    -      -       +      +
    347L  LYS*     1.3    77.4    -      -       +      +
    349L  ARG*     1.3    62.5    +      -       -      +
    351L  ASP*     4.0     8.2    -      -       -      +
    352L  SER*     3.1    27.4    +      -       -      -
    466L  ASP*     4.1    16.8    -      -       +      +
    467L  GLN*     5.5     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 349 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284G  ASP*     4.1     2.8    +      -       -      -
    286G  LEU*     3.0    37.6    -      -       -      +
    287G  LEU*     3.2    39.3    -      -       +      +
    345L  LEU      2.8    13.8    +      -       -      +
    346L  ALA*     3.2    17.3    -      -       -      +
    348L  LYS*     1.3    75.9    -      -       -      +
    350L  VAL*     1.3    56.5    +      -       -      +
    352L  SER*     3.0    13.7    +      -       -      -
    353L  LEU*     4.0     4.3    -      -       -      +
    465L  ILE*     3.1    17.2    -      -       -      +
    466L  ASP*     2.9    28.6    +      -       -      -
    511L  LYS*     3.5    16.2    -      -       -      +
    516L  LYS*     2.9    38.1    +      -       -      +
    517L  ARG*     3.1    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 350 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287G  LEU*     3.8    14.1    -      -       +      +
    290G  GLY*     3.3    26.9    -      -       -      -
    291G  MET*     3.2    20.0    -      -       +      +
    294G  GLU*     4.3    11.2    -      -       -      +
    346L  ALA      3.0    15.6    +      -       -      +
    347L  LYS*     3.0     9.6    +      -       +      +
    349L  ARG*     1.3    76.5    -      -       -      +
    351L  ASP*     1.3    62.5    +      -       -      +
    352L  SER      3.1     1.8    -      -       -      -
    353L  LEU*     2.9    21.3    +      -       -      +
    354L  GLN*     3.1    42.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 351 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    347L  LYS*     2.7    53.9    +      -       -      +
    348L  LYS*     3.4     8.1    +      -       -      +
    350L  VAL*     1.3    76.7    -      -       -      +
    352L  SER*     1.3    57.8    +      -       -      +
    353L  LEU      3.0     4.7    +      -       -      -
    354L  GLN*     4.0     3.5    -      -       -      +
    355L  LEU*     3.3    55.5    +      -       +      +
    360L  MET*     4.0     9.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 352 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348L  LYS      3.1    12.2    +      -       -      -
    349L  ARG      3.0    19.6    +      -       -      -
    351L  ASP*     1.3    75.3    -      -       -      +
    353L  LEU*     1.3    63.7    +      -       -      +
    355L  LEU      4.9     2.6    -      -       -      +
    360L  MET*     4.2    20.0    -      -       -      +
    466L  ASP*     3.1    38.0    +      -       -      -
    467L  GLN      5.5     1.6    -      -       -      -
    517L  ARG*     4.1     5.2    +      -       -      -
    519L  GLN*     5.1     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 353 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287G  LEU*     3.3    37.0    -      -       +      -
    291G  MET*     6.2     1.1    -      -       -      -
    310G  GLN*     4.8     7.3    +      -       -      +
    349L  ARG      4.0     3.8    -      -       -      +
    350L  VAL*     2.9     6.8    +      -       +      +
    352L  SER*     1.3    88.7    -      -       -      +
    354L  GLN*     1.3    67.3    +      -       +      +
    355L  LEU      3.9     2.1    -      -       -      +
    517L  ARG*     3.2    33.4    -      -       -      +
    519L  GLN*     6.0     2.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 354 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291G  MET*     3.1    29.0    -      -       +      +
    294G  GLU*     3.0    29.1    +      -       -      +
    304G  LYS*     4.1    21.0    -      -       -      +
    309G  GLU*     5.4     2.4    -      -       -      +
    310G  GLN*     3.4    44.9    +      -       +      +
    313G  HIS*     5.2     2.6    -      -       -      +
    350L  VAL*     3.1    20.8    +      -       +      +
    351L  ASP*     5.0     2.0    -      -       -      +
    353L  LEU*     1.3    80.9    -      -       +      +
    355L  LEU*     1.3    69.7    +      -       +      +
    356L  THR*     3.5     5.4    +      -       -      +
    359L  GLN*     4.6     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 355 (chain L). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304G  LYS*     6.2     3.6    -      -       -      -
    351L  ASP*     3.3    48.3    +      -       +      +
    352L  SER      4.9     1.0    -      -       -      -
    353L  LEU      4.6     2.6    -      -       -      -
    354L  GLN*     1.3    83.1    +      -       +      +
    356L  THR*     1.3    69.2    +      -       -      +
    357L  ARG      3.8     0.2    +      -       -      -
    359L  GLN*     3.4    29.8    -      -       +      +
    360L  MET*     3.8    15.3    -      -       +      +
    363L  ASN*     3.6    26.9    -      -       -      +
----------------------------------------------------------
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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