Contacts of the helix formed by residues 334 - 360 (chain A) in PDB entry 6MXO


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 ARG 334 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  THR*     1.3    72.3    -      -       -      +
    335A  GLU*     1.3    89.3    +      -       -      +
    337A  VAL*     3.5     3.6    +      -       -      +
    338A  GLN*     3.1    47.8    +      -       -      +
    400A  PHE*     3.4    34.7    -      -       +      -
    407A  ASN*     5.6     0.9    -      -       -      +
    412A  GLN*     3.3    26.7    +      -       -      +
    413A  THR*     2.8    30.4    +      -       -      +
    414A  GLU      5.2     0.2    -      -       -      +
    415A  TRP*     4.1    19.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  THR*     3.2     9.8    -      -       -      +
    334A  ARG*     1.3   108.4    +      -       +      +
    336A  GLN*     1.3    57.4    +      -       -      +
    338A  GLN*     3.5    12.9    +      -       -      +
    339A  TRP*     3.0    27.0    +      -       -      +
    413A  THR*     5.4     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 336 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329A  THR      4.8     2.6    +      -       -      -
    330A  ALA      4.7     3.3    +      -       -      +
    331A  LEU*     3.8    28.8    -      -       +      +
    332A  ALA*     3.1    21.9    +      -       -      +
    333A  THR*     2.9    27.6    +      -       -      +
    335A  GLU*     1.3    74.3    -      -       -      +
    337A  VAL*     1.3    66.2    +      -       -      +
    338A  GLN      3.2     0.2    -      -       -      -
    339A  TRP*     3.2     6.0    +      -       +      +
    340A  TRP*     3.1    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 337 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331A  LEU*     3.9    24.4    -      -       +      +
    333A  THR      3.1    16.5    +      -       -      +
    334A  ARG      3.7     5.2    -      -       -      +
    336A  GLN*     1.3    78.4    -      -       -      +
    338A  GLN*     1.3    55.5    +      -       -      +
    340A  TRP      3.5     0.3    +      -       -      -
    341A  LEU*     3.0    47.0    +      -       +      +
    400A  PHE*     4.2    14.1    -      -       +      -
    403A  ILE*     4.3    12.8    -      -       +      -
    415A  TRP*     4.1    19.5    -      -       +      -
    419A  LEU*     3.7    25.8    -      -       +      -
    422A  LEU*     4.0     5.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 338 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334A  ARG*     3.1    45.1    +      -       -      +
    335A  GLU*     3.6    15.7    -      -       -      +
    336A  GLN      3.2     0.2    -      -       -      -
    337A  VAL*     1.3    77.2    -      -       -      +
    339A  TRP*     1.3    59.0    +      -       -      +
    341A  LEU*     3.3     8.2    +      -       -      +
    342A  LEU*     2.9    28.9    +      -       -      +
    396A  SER*     4.8     2.1    -      -       -      -
    397A  HIS*     6.2     2.0    -      -       -      -
    400A  PHE*     3.6    44.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 339 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ARG*     4.9     5.8    -      -       -      -
     85A  GLY*     6.0     0.7    -      -       -      -
    335A  GLU      3.0    17.6    +      -       -      +
    336A  GLN*     3.2     7.8    +      -       -      +
    338A  GLN*     1.3    77.2    -      -       -      +
    340A  TRP*     1.3   102.7    +      +       -      +
    342A  LEU*     3.3    12.8    +      -       +      +
    343A  GLN*     3.0    71.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 340 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ARG      3.7    18.8    -      -       -      -
     85A  GLY*     4.0    13.9    -      -       -      -
     86A  LYS*     5.4     1.3    -      -       +      -
    323A  LYS*     3.7    31.6    -      -       +      -
    325A  PHE*     3.6    26.1    -      +       +      -
    331A  LEU*     3.5    24.6    -      -       +      +
    336A  GLN*     3.1    33.0    +      -       +      +
    337A  VAL      4.0     0.2    -      -       -      +
    339A  TRP*     1.3   106.7    -      +       -      +
    341A  LEU*     1.3    67.8    +      -       -      +
    343A  GLN*     3.0    11.4    +      -       +      +
    344A  LEU*     2.9    29.6    +      -       +      +
    422A  LEU*     3.6    22.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 341 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337A  VAL*     3.0    35.2    +      -       +      +
    338A  GLN*     3.6     6.3    -      -       -      +
    340A  TRP*     1.3    74.9    -      -       -      +
    342A  LEU*     1.3    56.5    -      -       -      +
    344A  LEU*     3.4     5.7    +      -       +      +
    345A  ALA*     2.8    30.5    +      -       -      +
    368A  VAL*     4.6     7.9    -      -       +      -
    396A  SER*     3.9    14.4    -      -       -      +
    399A  ALA*     4.3     4.5    -      -       +      -
    400A  PHE*     3.9    40.2    -      -       +      +
    403A  ILE*     4.0     5.6    -      -       +      -
    422A  LEU*     3.9    29.1    -      -       +      +
    423A  PHE      5.6     0.4    -      -       -      +
    424A  LEU*     3.9    28.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 342 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    338A  GLN      2.9    13.0    +      -       -      +
    339A  TRP*     3.3    17.7    -      -       +      +
    340A  TRP      3.1     0.2    -      -       -      -
    341A  LEU*     1.3    74.5    -      -       -      +
    343A  GLN*     1.3    78.5    +      -       -      +
    345A  ALA*     3.2     0.4    +      -       -      -
    346A  GLN*     2.9    45.8    +      -       +      +
    392A  ALA      4.1     8.5    -      -       -      +
    393A  HIS*     3.9    35.7    -      -       +      +
    396A  SER*     3.5    24.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 343 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ARG*     3.4    53.1    -      -       +      +
     86A  LYS*     5.5     3.7    -      -       +      +
    339A  TRP*     3.0    80.8    +      -       +      +
    340A  TRP*     3.0    16.3    +      -       +      +
    342A  LEU*     1.3    82.8    -      -       -      +
    344A  LEU*     1.3    65.8    +      -       +      +
    346A  GLN*     3.2    12.7    +      -       -      +
    347A  GLU*     3.2    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 344 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     86A  LYS*     3.7    33.7    -      -       +      -
    321A  CYS*     3.8    28.0    -      -       +      +
    322A  SER      4.2     6.1    -      -       -      +
    323A  LYS*     4.5     9.9    -      -       +      +
    325A  PHE*     5.8     0.4    -      -       +      -
    340A  TRP*     2.9    19.8    +      -       +      +
    341A  LEU*     3.6     8.5    -      -       +      +
    343A  GLN*     1.3    77.6    -      -       +      +
    345A  ALA*     1.3    62.3    +      -       -      +
    347A  GLU*     3.3     2.6    +      -       -      -
    348A  LEU*     3.0    23.2    +      -       -      +
    422A  LEU*     3.7    45.8    -      -       +      +
    423A  PHE      4.4     1.1    -      -       -      +
    424A  LEU*     3.9    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 345 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  LEU      2.8    18.3    +      -       -      +
    342A  LEU      3.7     4.0    -      -       -      +
    343A  GLN      3.2     0.4    -      -       -      -
    344A  LEU*     1.3    77.0    -      -       -      +
    346A  GLN*     1.3    57.8    +      -       -      +
    348A  LEU*     3.6     4.6    -      -       -      +
    349A  GLU*     2.9    29.6    +      -       -      +
    392A  ALA*     3.3    31.2    -      -       +      +
    395A  MET*     4.0     7.9    -      -       +      +
    396A  SER*     3.9    13.0    -      -       -      +
    424A  LEU*     3.7    13.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 346 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ARG*     3.4    35.4    +      -       -      +
    342A  LEU*     2.9    37.7    +      -       +      +
    343A  GLN*     3.2    14.4    +      -       -      +
    345A  ALA*     1.3    75.2    -      -       -      +
    347A  GLU*     1.3    66.2    +      -       -      +
    349A  GLU*     3.6     4.4    +      -       -      +
    350A  GLU*     3.3    25.1    +      -       -      +
    392A  ALA*     3.6    19.0    -      -       +      +
    393A  HIS*     4.9     9.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 347 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     83A  SER*     5.0     1.2    -      -       -      +
     84A  ARG*     3.5    23.0    +      -       -      +
     86A  LYS*     2.7    46.0    +      -       +      +
     87A  ALA      4.3     1.1    -      -       -      +
     88A  ASN*     4.3    21.8    -      -       -      +
     90A  THR*     5.3     0.4    +      -       -      +
     93A  ARG*     4.4     2.6    +      -       -      -
    321A  CYS*     4.1     8.5    -      -       -      -
    343A  GLN      3.2     9.3    +      -       -      +
    344A  LEU*     3.3     6.9    +      -       -      +
    346A  GLN*     1.3    78.5    -      -       -      +
    348A  LEU*     1.3    65.0    +      -       -      +
    350A  GLU*     3.2    10.7    +      -       -      +
    351A  ARG*     3.0    50.4    +      -       +      +
      6T    T      4.0     2.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 348 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  ILE*     3.4    42.4    -      -       +      +
    320A  GLY      4.6     0.4    -      -       -      +
    321A  CYS*     3.7    18.1    -      -       -      -
    344A  LEU      3.0    17.1    +      -       -      +
    345A  ALA*     3.6     5.2    -      -       -      +
    347A  GLU*     1.3    77.0    -      -       -      +
    349A  GLU*     1.3    51.0    +      -       -      +
    351A  ARG*     3.2     5.4    +      -       -      +
    352A  LEU*     2.7    53.9    +      -       +      +
    366A  LEU*     3.9    27.6    -      -       +      -
    395A  MET*     4.2    12.8    -      -       -      -
    424A  LEU*     4.2    20.4    -      -       +      +
    426A  ALA*     4.4     7.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 349 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    345A  ALA      2.9    18.1    +      -       -      +
    346A  GLN*     3.7     6.7    -      -       -      +
    348A  LEU*     1.3    77.2    -      -       -      +
    350A  GLU*     1.3    66.6    +      -       -      +
    352A  LEU*     3.3     5.8    +      -       -      +
    353A  THR*     3.0    37.2    +      -       -      +
    390A  TYR*     3.6    30.5    -      -       +      +
    391A  ASP*     4.2     1.0    -      -       -      +
    392A  ALA*     3.1    26.3    +      -       +      +
    395A  MET*     4.0    11.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 350 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     84A  ARG*     2.8    38.2    +      -       -      -
    346A  GLN      3.3     6.5    +      -       -      +
    347A  GLU*     3.2    10.8    +      -       -      +
    349A  GLU*     1.3    83.5    -      -       -      +
    351A  ARG*     1.3    65.6    +      -       +      +
    353A  THR*     3.9     5.1    -      -       -      -
    354A  LYS*     3.2    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 351 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  THR*     5.3     7.4    -      -       -      +
     93A  ARG*     3.0    41.5    -      -       -      +
    319A  ILE*     3.7    28.2    -      -       +      +
    320A  GLY      2.8    28.1    +      -       -      -
    321A  CYS*     3.5     9.9    -      -       -      -
    347A  GLU*     3.0    37.1    +      -       +      +
    348A  LEU      3.6     7.4    -      -       -      +
    350A  GLU*     1.3    82.1    -      -       +      +
    352A  LEU*     1.3    56.6    +      -       -      +
    354A  LYS*     3.5     5.4    +      -       -      +
    355A  ASP*     3.0    28.5    +      -       -      +
      6T    T      3.3    16.2    +      -       -      -
      7T    C      3.3    17.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 352 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  ILE*     4.0    21.1    -      -       +      -
    348A  LEU*     2.7    45.5    +      -       +      +
    349A  GLU*     3.8     3.8    -      -       -      +
    350A  GLU      3.3     0.2    -      -       -      -
    351A  ARG*     1.3    71.3    -      -       -      +
    353A  THR*     1.3    60.2    +      -       -      +
    355A  ASP*     3.2     3.6    +      -       +      +
    356A  ARG      2.8    26.0    +      -       -      -
    363A  ALA*     4.2     0.9    -      -       +      -
    387A  LEU*     4.2     8.3    -      -       +      -
    390A  TYR*     3.2    51.8    -      -       +      +
    395A  MET*     4.3     6.5    -      -       -      -
    426A  ALA*     3.6    28.0    -      -       +      -
    429A  PHE*     4.2     9.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 353 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    349A  GLU*     3.0    28.4    +      -       -      +
    350A  GLU*     3.9     6.0    -      -       -      -
    352A  LEU*     1.3    75.0    -      -       -      +
    354A  LYS*     1.3    64.0    +      -       -      +
    356A  ARG*     3.5    18.8    +      -       -      +
    357A  ASN*     3.1    40.2    +      -       -      +
    390A  TYR*     3.8    17.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 354 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  THR*     6.5     1.3    -      -       +      -
     94A  GLU*     4.7    20.4    +      -       -      +
    350A  GLU      3.2    16.3    +      -       -      +
    351A  ARG*     3.8     6.1    -      -       -      +
    353A  THR*     1.3    79.6    -      -       -      +
    355A  ASP*     1.3    58.0    +      -       -      +
    357A  ASN*     3.2     7.0    +      -       -      +
    358A  ASP*     2.2    67.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 355 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  ILE*     3.8    18.0    -      -       +      +
    351A  ARG      3.0    18.3    +      -       -      +
    352A  LEU*     3.4     5.8    -      -       +      +
    354A  LYS*     1.3    74.9    -      -       -      +
    356A  ARG*     1.3    59.2    +      -       -      +
    358A  ASP*     4.6     0.7    -      -       -      -
    359A  ASN*     2.8    57.5    +      -       -      +
    360A  ASP      3.9     0.3    +      -       -      -
    361A  ARG*     2.7    49.2    +      -       -      +
    390A  TYR*     4.9     0.9    +      -       -      -
    429A  PHE*     3.3    15.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 356 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    352A  LEU      2.8    19.8    +      -       -      +
    353A  THR*     3.8    24.3    +      -       -      +
    355A  ASP*     1.3    73.5    +      -       -      +
    357A  ASN*     1.3    61.9    +      -       -      +
    360A  ASP*     3.1    26.9    +      -       -      +
    361A  ARG      3.3    23.6    -      -       -      +
    362A  VAL*     3.3    23.7    -      -       +      +
    390A  TYR*     3.5    37.1    -      -       +      +
    432A  SER*     4.7     6.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 357 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    353A  THR*     3.1    33.5    +      -       -      +
    354A  LYS*     3.8     6.7    -      -       -      +
    356A  ARG*     1.3    81.0    +      -       -      +
    358A  ASP*     1.3    71.8    +      -       -      +
    360A  ASP*     4.6     7.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 358 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    354A  LYS*     2.2    60.0    +      -       -      +
    355A  ASP*     4.6     0.2    -      -       -      -
    357A  ASN*     1.3    83.9    -      -       -      +
    359A  ASN*     1.3    79.4    +      -       -      +
    360A  ASP*     3.6     6.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 359 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    315A  LEU*     3.7    43.9    -      -       +      +
    355A  ASP*     2.8    37.1    +      -       -      +
    358A  ASP*     1.3    93.8    -      -       -      +
    360A  ASP*     1.3    73.4    +      -       -      +
    361A  ARG*     3.2    12.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 360 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    356A  ARG*     3.1    15.2    +      -       -      +
    357A  ASN      4.6     5.7    -      -       -      +
    358A  ASP      4.4     6.7    -      -       -      +
    359A  ASN*     1.3    80.7    -      -       -      +
    361A  ARG*     1.3    59.1    +      -       -      +
    431A  ALA*     3.7     6.4    -      -       -      +
    432A  SER      3.1    35.4    +      -       -      +
----------------------------------------------------------
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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