Contacts of the helix formed by residues 329 - 355 (chain F) in PDB entry 1SMK


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 329 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229F  LEU*     6.1     0.2    -      -       -      +
    230F  SER*     3.3    22.8    +      -       -      +
    243F  ILE*     5.7     7.3    -      -       -      +
    328F  LEU*     1.3    73.0    -      -       -      +
    330F  GLU*     1.3    58.9    +      -       -      +
    331F  TYR*     3.2    11.7    +      -       -      +
    332F  GLU*     2.8    55.3    +      -       -      +
    333F  ARG*     2.8    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 330 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329F  ASN*     1.3    71.6    -      -       -      +
    331F  TYR*     1.3    68.7    +      -       -      +
    333F  ARG*     2.9    24.1    +      -       -      +
    334F  ILE*     2.9    37.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 331 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229F  LEU*     5.5     0.2    -      -       +      -
    243F  ILE*     3.3    36.6    -      -       +      -
    244F  SER*     3.8    17.2    +      -       -      -
    247F  THR*     3.4    35.7    -      -       +      +
    248F  ASP*     5.2     2.4    +      -       -      -
    329F  ASN*     3.2     9.8    +      -       -      +
    330F  GLU*     1.3    78.8    +      -       -      +
    332F  GLU*     1.3    69.5    +      -       +      +
    334F  ILE*     3.3     8.7    +      -       +      +
    335F  GLY*     2.9    23.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 332 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226F  LEU*     4.1     9.7    -      -       +      +
    227F  PRO      4.6     7.6    -      -       -      +
    228F  LEU*     3.3    18.1    -      -       +      -
    229F  LEU*     2.9    16.5    +      -       +      +
    230F  SER*     2.7    43.7    +      -       -      -
    328F  LEU*     3.6    15.3    -      -       +      +
    329F  ASN*     2.8    41.6    +      -       -      +
    331F  TYR*     1.3    84.3    -      -       +      +
    333F  ARG*     1.3    61.7    +      -       -      +
    335F  GLY*     3.1     3.2    +      -       -      +
    336F  LEU*     2.8    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 333 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326F  GLY      4.4     6.3    +      -       -      -
    327F  PRO*     4.4     3.2    -      -       -      +
    328F  LEU*     3.3    49.1    +      -       +      +
    329F  ASN      2.8    31.3    +      -       -      +
    330F  GLU*     2.9    17.5    +      -       -      +
    332F  GLU*     1.3    72.9    -      -       -      +
    334F  ILE*     1.3    65.6    +      -       +      +
    336F  LEU*     3.4    15.0    +      -       -      +
    337F  GLU*     3.2    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 334 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330F  GLU*     2.9    34.6    +      -       -      +
    331F  TYR*     3.6     9.6    -      -       +      +
    333F  ARG*     1.3    78.3    -      -       +      +
    335F  GLY*     1.3    65.1    +      -       -      +
    337F  GLU*     3.1    13.0    +      -       +      +
    338F  LYS*     3.1    34.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 335 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223F  VAL      4.4     2.6    -      -       -      +
    226F  LEU*     3.9    17.5    -      -       -      +
    331F  TYR*     2.9    15.1    +      -       -      -
    332F  GLU      3.1     4.0    +      -       -      -
    334F  ILE*     1.3    79.7    -      -       -      +
    336F  LEU*     1.3    55.8    +      -       -      +
    338F  LYS*     3.2    16.4    +      -       -      +
    339F  ALA*     2.8    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 336 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226F  LEU*     3.6    16.5    -      -       +      +
    303F  THR*     4.7     1.6    -      -       +      -
    308F  PHE*     3.7    26.5    -      -       +      -
    325F  LEU*     3.7    22.9    -      -       +      -
    328F  LEU*     3.9    14.1    -      -       +      -
    332F  GLU      2.8    17.2    +      -       -      +
    333F  ARG*     3.6    14.6    -      -       -      +
    334F  ILE      3.2     0.2    -      -       -      -
    335F  GLY*     1.3    76.5    -      -       -      +
    337F  GLU*     1.3    58.6    +      -       -      +
    339F  ALA*     4.1     1.8    -      -       +      -
    340F  LYS*     2.8    65.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 337 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333F  ARG      3.2    10.2    +      -       -      +
    334F  ILE*     3.1    19.4    +      -       +      +
    336F  LEU*     1.3    81.7    -      -       -      +
    338F  LYS*     1.3    61.5    +      -       +      +
    340F  LYS*     3.6    19.7    +      -       -      +
    341F  LYS*     3.3    26.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 338 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223F  VAL*     4.2    35.6    -      -       +      +
    251F  GLN*     5.4     4.8    +      -       -      +
    334F  ILE*     3.1    30.2    +      -       +      +
    335F  GLY*     3.2    12.7    +      -       -      +
    337F  GLU*     1.3    77.2    -      -       +      +
    339F  ALA*     1.3    62.8    +      -       -      +
    341F  LYS*     3.4    10.4    +      -       -      +
    342F  GLU*     3.2    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 339 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218F  GLY*     5.0     7.2    -      -       -      -
    223F  VAL      3.7    19.9    +      -       -      +
    224F  THR*     3.8    22.2    -      -       -      +
    226F  LEU*     4.8     7.6    -      -       +      -
    308F  PHE*     5.4     1.1    -      -       +      -
    335F  GLY      2.8    17.0    +      -       -      +
    336F  LEU*     3.1    11.9    +      -       +      +
    338F  LYS*     1.3    78.5    -      -       -      +
    340F  LYS*     1.3    57.3    +      -       -      +
    342F  GLU      3.4     0.2    +      -       -      -
    343F  LEU*     2.8    35.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 340 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303F  THR*     4.2    11.2    -      -       -      +
    304F  GLU*     3.4    38.7    +      -       -      +
    305F  LEU*     3.6    25.0    -      -       +      +
    308F  PHE*     4.6     5.4    -      -       +      -
    336F  LEU*     2.8    56.1    +      -       +      +
    337F  GLU*     3.9    22.5    +      -       -      +
    339F  ALA*     1.3    72.2    -      -       -      +
    341F  LYS*     1.3    64.7    +      -       -      +
    344F  ALA*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 341 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337F  GLU*     3.3    14.4    +      -       +      +
    338F  LYS*     3.4    12.3    -      -       +      +
    340F  LYS*     1.3    81.7    -      -       -      +
    342F  GLU*     1.3    62.4    +      -       +      +
    344F  ALA*     3.5    15.0    -      -       -      +
    345F  GLY      3.9     2.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 342 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221F  ALA*     4.3     9.4    -      -       -      +
    222F  GLY*     5.0     1.7    -      -       -      -
    223F  VAL*     3.6    23.7    +      -       +      +
    224F  THR*     3.8    20.8    -      -       +      +
    338F  LYS      3.2    11.1    +      -       -      +
    341F  LYS*     1.3    77.2    -      -       +      +
    343F  LEU*     1.3    67.2    +      -       -      +
    344F  ALA      3.1     2.0    -      -       -      -
    345F  GLY*     3.1    13.2    +      -       -      -
    346F  SER*     3.3    16.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 343 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165F  ASN*     3.6    40.4    -      -       +      +
    218F  GLY*     3.7    20.2    -      -       -      +
    219F  GLY*     4.2     1.8    -      -       -      +
    224F  THR*     3.9     8.2    -      -       +      +
    297F  PHE*     4.0    10.8    -      -       +      -
    305F  LEU*     3.7    15.0    -      -       +      -
    307F  PHE      3.9     7.2    -      -       -      +
    308F  PHE*     3.7    32.8    -      -       +      -
    339F  ALA      2.8    18.3    +      -       -      +
    342F  GLU*     1.3    77.8    -      -       -      +
    344F  ALA*     1.3    62.4    -      -       -      +
    346F  SER*     3.4     3.2    +      -       -      -
    347F  ILE*     3.1    35.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 344 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305F  LEU*     4.1    18.6    -      -       +      +
    340F  LYS      2.9    18.5    +      -       -      +
    341F  LYS*     3.5     9.6    -      -       -      +
    342F  GLU      3.1     0.2    -      -       -      -
    343F  LEU*     1.3    77.0    -      -       -      +
    345F  GLY*     1.3    63.0    +      -       -      +
    347F  ILE*     3.4     5.5    +      -       -      +
    348F  GLU*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 345 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341F  LYS      3.9     2.8    +      -       -      -
    342F  GLU      3.1     8.5    +      -       -      -
    344F  ALA*     1.3    80.4    -      -       -      +
    346F  SER*     1.3    52.1    +      -       -      +
    348F  GLU*     3.2     6.4    +      -       -      +
    349F  LYS*     2.7    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 346 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165F  ASN*     3.8    26.7    +      -       -      +
    166F  SER*     2.6    32.9    +      -       -      -
    224F  THR*     5.5     0.7    -      -       -      +
    342F  GLU*     3.3    19.5    +      -       -      +
    343F  LEU*     3.7     9.8    -      -       -      -
    344F  ALA      3.3     0.2    -      -       -      -
    345F  GLY*     1.3    75.2    -      -       -      +
    347F  ILE*     1.3    62.7    +      -       -      +
    349F  LYS*     3.7     6.2    -      -       -      +
    350F  GLY      3.2    10.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 347 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165F  ASN      4.0    15.5    -      -       -      +
    169F  PRO*     4.0    17.1    -      -       +      +
    297F  PHE*     4.8     0.2    -      -       +      -
    305F  LEU*     3.9    23.8    -      -       +      -
    306F  PRO*     4.0    24.9    -      -       +      -
    307F  PHE*     3.7    30.7    -      -       +      +
    343F  LEU*     3.1    27.8    +      -       +      +
    344F  ALA*     3.7     4.7    -      -       -      +
    346F  SER*     1.3    72.3    -      -       -      +
    348F  GLU*     1.3    63.8    +      -       -      +
    350F  GLY*     3.1     2.8    +      -       -      -
    351F  VAL*     2.8    37.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 348 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    344F  ALA      3.1    11.7    +      -       -      +
    345F  GLY*     3.6     9.0    -      -       -      +
    347F  ILE*     1.3    79.6    -      -       -      +
    349F  LYS*     1.3    66.0    +      -       -      +
    351F  VAL*     4.4    12.4    -      -       -      +
    352F  SER*     2.8    46.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 349 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131F  ASP*     5.8     2.6    +      -       -      -
    134F  PHE*     3.8    50.3    -      -       +      +
    166F  SER*     4.4     4.7    -      -       -      +
    345F  GLY      2.7    22.2    +      -       -      +
    346F  SER*     3.7     9.0    -      -       -      +
    348F  GLU*     1.3    71.4    -      -       -      +
    350F  GLY*     1.3    61.4    +      -       -      +
    352F  SER*     3.7     6.2    -      -       -      -
    353F  PHE*     3.3    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 350 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134F  PHE*     4.7     0.4    -      -       -      -
    166F  SER*     3.7    27.1    -      -       -      -
    170F  ILE*     3.2    29.6    -      -       -      +
    346F  SER      3.2     6.4    +      -       -      -
    347F  ILE      3.1     6.3    +      -       -      -
    348F  GLU      3.0     0.4    -      -       -      -
    349F  LYS*     1.3    79.2    -      -       -      +
    351F  VAL*     1.3    65.9    +      -       -      +
    353F  PHE*     3.1    11.3    +      -       -      +
    354F  ILE      3.6     2.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 351 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169F  PRO*     3.9    17.2    -      -       +      +
    173F  GLU*     3.5    38.3    -      -       +      +
    306F  PRO*     6.2     0.7    -      -       +      -
    307F  PHE*     5.2     4.5    -      -       +      -
    347F  ILE*     2.8    32.1    +      -       +      +
    348F  GLU*     4.0    16.8    -      -       -      +
    350F  GLY*     1.3    71.4    -      -       -      +
    352F  SER*     1.3    64.4    +      -       -      +
    354F  ILE*     3.2     5.5    +      -       -      +
    355F  ARG*     3.0    32.7    +      -       +      +
----------------------------------------------------------
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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  GLU*     2.8    31.3    +      -       -      -
    349F  LYS*     3.7     7.0    -      -       -      -
    351F  VAL*     1.3    77.5    -      -       -      +
    353F  PHE*     1.3    63.3    +      -       -      +
    354F  ILE      3.1     1.0    +      -       -      -
    355F  ARG*     3.2    25.9    +      -       -      +
    356F  SER*     3.7     6.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 353 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134F  PHE*     4.4    11.7    -      +       +      -
    135F  LYS*     4.3    17.0    -      -       +      -
    138F  ALA*     3.5    39.5    -      -       +      -
    139F  GLY*     3.6    14.8    -      -       -      -
    142F  LYS*     4.2    13.1    +      -       +      -
    170F  ILE*     3.7    16.8    -      -       +      -
    349F  LYS      3.3    11.5    +      -       -      +
    350F  GLY*     3.1    12.4    +      -       -      +
    352F  SER*     1.3    80.3    -      -       -      +
    354F  ILE*     1.3    81.5    +      -       +      +
    356F  SER*     4.6     7.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 354 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142F  LYS*     3.6    34.5    +      -       +      +
    170F  ILE*     3.4    42.0    -      -       +      +
    173F  GLU*     3.5    34.3    -      -       +      +
    174F  VAL*     3.6    21.1    -      -       +      +
    177F  LYS*     5.1    14.4    -      -       +      +
    350F  GLY      3.6     0.2    +      -       -      -
    351F  VAL      3.2     3.8    +      -       -      +
    352F  SER      3.2     0.6    -      -       -      -
    353F  PHE*     1.3    83.5    -      -       +      +
    355F  ARG*     1.3    60.1    +      -       -      +
    356F  SER*     2.7    22.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 355 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173F  GLU*     2.8    26.6    +      -       -      +
    176F  LYS*     4.4    20.3    -      -       -      +
    177F  LYS*     6.0     5.5    -      -       -      +
    351F  VAL*     3.0    34.3    +      -       +      +
    352F  SER*     3.2    10.4    +      -       -      +
    354F  ILE*     1.3    74.5    -      -       -      +
    356F  SER*     1.3    68.6    +      -       -      +
----------------------------------------------------------
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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