Contacts of the helix formed by residues 329 - 355 (chain A) 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 A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229A  LEU*     6.0     0.8    -      -       -      +
    230A  SER*     3.5    18.6    +      -       -      +
    243A  ILE*     5.4    10.3    -      -       -      +
    328A  LEU*     1.3    73.8    -      -       -      +
    330A  GLU*     1.3    66.3    +      -       -      +
    331A  TYR*     3.2    11.3    +      -       -      +
    332A  GLU*     2.8    61.4    +      -       -      +
    333A  ARG*     2.8    24.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 330 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329A  ASN*     1.3    73.4    -      -       -      +
    331A  TYR*     1.3    65.6    +      -       -      +
    333A  ARG*     3.0    38.7    +      -       -      +
    334A  ILE*     2.9    42.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 331 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  LEU*     5.8     3.4    -      -       +      -
    240A  GLN*     6.3     2.7    -      -       +      -
    243A  ILE*     3.6    29.8    -      -       +      -
    244A  SER*     3.7    25.3    +      -       -      -
    247A  THR*     3.4    43.5    -      -       +      +
    248A  ASP*     4.1     7.4    +      -       -      -
    329A  ASN*     3.2    10.6    +      -       -      +
    330A  GLU*     1.3    79.7    -      -       -      +
    332A  GLU*     1.3    66.1    +      -       +      +
    334A  ILE*     3.6     8.3    +      -       -      +
    335A  GLY*     3.1    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 332 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  LEU*     3.7    11.0    -      -       +      +
    227A  PRO      4.9     4.9    -      -       -      +
    228A  LEU*     3.3    21.5    -      -       +      -
    229A  LEU*     3.2    12.7    +      -       +      +
    230A  SER*     2.6    46.6    +      -       -      -
    243A  ILE*     6.4     0.4    -      -       +      -
    328A  LEU*     3.3    16.1    -      -       +      +
    329A  ASN*     2.8    54.6    +      -       -      +
    331A  TYR*     1.3    79.0    -      -       +      +
    333A  ARG*     1.3    54.5    +      -       -      +
    335A  GLY*     3.2     1.3    +      -       -      +
    336A  LEU*     2.6    36.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 333 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328A  LEU*     4.1    11.6    +      -       +      +
    329A  ASN      2.8    18.5    +      -       -      +
    330A  GLU*     3.2    44.2    -      -       -      +
    332A  GLU*     1.3    73.2    -      -       -      +
    334A  ILE*     1.3    63.5    +      -       -      +
    336A  LEU*     3.1    17.8    +      -       -      +
    337A  GLU*     3.1    10.7    +      -       -      +
    203C  GLU      5.2     1.6    +      -       -      -
    204C  VAL*     3.9    29.1    +      -       -      +
    241C  GLU*     3.1    42.0    +      -       -      +
    242C  GLU*     3.7    19.8    +      -       -      +
    245C  TYR*     3.1    54.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 334 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330A  GLU*     2.9    36.8    +      -       +      +
    331A  TYR*     3.9     7.4    -      -       -      +
    333A  ARG*     1.3    75.4    -      -       -      +
    335A  GLY*     1.3    61.6    +      -       -      +
    337A  GLU*     3.6     2.9    +      -       -      +
    338A  LYS*     3.4    20.5    +      -       +      +
    241C  GLU*     3.5    29.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223A  VAL      4.3     4.0    -      -       -      +
    226A  LEU*     4.0    16.4    -      -       -      +
    251A  GLN*     6.1     2.0    -      -       -      -
    331A  TYR*     3.1    16.5    +      -       -      -
    332A  GLU      3.2     3.1    +      -       -      -
    333A  ARG      3.1     0.2    -      -       -      -
    334A  ILE*     1.3    76.5    -      -       -      +
    336A  LEU*     1.3    65.0    +      -       -      +
    338A  LYS*     3.3     7.3    +      -       -      +
    339A  ALA*     2.9    23.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 336 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    217A  VAL*     4.9     0.2    -      -       +      -
    226A  LEU*     3.6    20.6    -      -       +      +
    308A  PHE*     3.6    31.2    -      -       +      -
    325A  LEU*     4.2    15.5    -      -       +      -
    328A  LEU*     3.7    21.5    -      -       +      -
    332A  GLU      2.6    20.4    +      -       -      +
    333A  ARG*     3.1     7.6    +      -       -      +
    335A  GLY*     1.3    73.5    -      -       -      +
    337A  GLU*     1.3    57.5    +      -       -      +
    339A  ALA*     3.0     7.4    +      -       +      +
    340A  LYS*     2.8    55.4    +      -       -      +
    245C  TYR*     4.9    15.3    -      -       +      +
    248C  ASP*     4.4     3.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 337 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  ARG      3.1    11.6    +      -       -      +
    334A  ILE      3.9     4.3    -      -       -      +
    336A  LEU*     1.3    79.4    -      -       -      +
    338A  LYS*     1.3    62.8    +      -       -      +
    340A  LYS*     3.4    10.7    +      -       -      +
    341A  LYS*     3.0    36.3    +      -       +      +
    240C  GLN*     3.4    39.7    +      -       +      +
    241C  GLU*     3.8    26.5    -      -       +      +
    244C  SER*     3.2    30.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 338 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223A  VAL*     4.0    38.9    -      -       +      +
    334A  ILE*     3.4    11.0    +      -       +      +
    335A  GLY*     3.3    10.7    +      -       -      +
    336A  LEU      3.3     0.4    -      -       -      -
    337A  GLU*     1.3    76.0    -      -       -      +
    339A  ALA*     1.3    67.4    +      -       -      +
    341A  LYS*     3.4    11.2    +      -       +      +
    342A  GLU*     3.3    19.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 339 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218A  GLY*     5.2     5.8    -      -       -      -
    223A  VAL      3.4    20.4    +      -       -      +
    224A  THR*     3.4    24.8    +      -       -      +
    226A  LEU*     4.9     7.0    -      -       +      -
    308A  PHE*     5.6     1.1    -      -       +      -
    335A  GLY      2.9    14.5    +      -       -      +
    336A  LEU*     3.1    17.0    -      -       +      +
    338A  LYS*     1.3    79.8    -      -       -      +
    340A  LYS*     1.3    58.7    +      -       +      +
    342A  GLU*     3.1     1.0    +      -       -      +
    343A  LEU*     2.8    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 340 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303A  THR*     3.8    21.7    -      -       -      -
    304A  GLU*     5.3     8.7    -      -       +      +
    305A  LEU*     3.9    25.7    -      -       +      +
    308A  PHE*     4.2     9.4    -      -       +      -
    336A  LEU*     2.8    40.3    +      -       +      +
    337A  GLU*     3.6    17.7    -      -       -      +
    339A  ALA*     1.3    73.9    -      -       -      +
    341A  LYS*     1.3    58.3    +      -       -      +
    343A  LEU*     3.7     0.8    -      -       -      +
    344A  ALA*     2.8    34.4    +      -       -      +
    244C  SER*     2.8    31.2    +      -       -      +
    248C  ASP*     2.6    31.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 341 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337A  GLU*     3.0    30.3    +      -       +      +
    338A  LYS*     3.7    10.5    -      -       -      +
    339A  ALA      3.2     0.4    -      -       -      -
    340A  LYS*     1.3    77.6    -      -       -      +
    342A  GLU*     1.3    62.9    +      -       -      +
    344A  ALA*     3.7     9.1    +      -       -      +
    345A  GLY*     3.7     7.1    +      -       -      -
    240C  GLN*     2.8    40.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 342 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165A  ASN*     5.3     1.0    +      -       -      -
    221A  ALA*     3.9    23.3    -      -       -      +
    222A  GLY*     5.3     0.9    -      -       -      -
    223A  VAL*     3.6    25.1    +      -       +      +
    224A  THR*     4.4     6.8    -      -       -      +
    338A  LYS      3.3     8.3    +      -       -      +
    339A  ALA      3.1     6.7    +      -       -      +
    341A  LYS*     1.3    77.1    -      -       -      +
    343A  LEU*     1.3    65.3    +      -       -      +
    345A  GLY*     3.2     4.2    +      -       -      -
    346A  SER*     3.1    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 343 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165A  ASN*     3.7    37.2    -      -       +      +
    218A  GLY*     3.7    17.3    -      -       -      +
    219A  GLY*     4.4     0.7    -      -       -      +
    224A  THR*     3.7     8.2    +      -       -      +
    297A  PHE*     3.8    13.7    -      -       +      -
    305A  LEU*     3.7     7.6    -      -       +      -
    307A  PHE      3.6    11.2    -      -       -      +
    308A  PHE*     3.6    35.0    -      -       +      -
    339A  ALA      2.8    18.4    +      -       -      +
    340A  LYS*     3.7     3.6    -      -       -      +
    342A  GLU*     1.3    75.9    -      -       -      +
    344A  ALA*     1.3    66.5    +      -       -      +
    346A  SER*     3.2     2.4    +      -       -      +
    347A  ILE*     3.0    40.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 344 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305A  LEU*     3.9    24.1    -      -       +      +
    340A  LYS      2.8    21.5    +      -       -      +
    341A  LYS*     3.8     7.4    -      -       -      +
    343A  LEU*     1.3    72.9    -      -       -      +
    345A  GLY*     1.3    62.8    +      -       -      +
    347A  ILE*     3.5     4.6    +      -       -      +
    348A  GLU*     3.1    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 345 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  LYS      3.7     5.3    +      -       -      -
    342A  GLU      3.2     7.2    +      -       -      -
    343A  LEU      3.2     0.4    -      -       -      -
    344A  ALA*     1.3    78.1    -      -       -      +
    346A  SER*     1.3    58.6    +      -       -      +
    348A  GLU*     3.4     7.0    +      -       -      +
    349A  LYS*     2.9    28.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 346 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163A  PRO*     6.5     0.2    -      -       -      -
    165A  ASN*     3.7    30.2    +      -       -      +
    166A  SER*     2.6    28.2    +      -       -      -
    342A  GLU*     3.1    25.6    +      -       -      +
    343A  LEU*     3.2     6.3    +      -       -      -
    345A  GLY*     1.3    76.7    -      -       -      +
    347A  ILE*     1.3    61.8    +      -       -      +
    349A  LYS*     3.3     7.0    +      -       -      +
    350A  GLY      3.2     9.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 347 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    165A  ASN      3.8    16.4    -      -       -      +
    169A  PRO*     3.9    14.3    -      -       +      +
    297A  PHE*     4.4     2.5    -      -       +      -
    305A  LEU*     4.3    10.1    -      -       +      -
    306A  PRO*     3.9    24.5    -      -       +      -
    307A  PHE*     3.5    37.7    -      -       +      +
    343A  LEU*     3.0    37.0    +      -       +      +
    344A  ALA*     3.7     4.0    -      -       -      +
    346A  SER*     1.3    74.5    -      -       -      +
    348A  GLU*     1.3    67.5    +      -       -      +
    350A  GLY*     2.9     4.3    +      -       -      -
    351A  VAL*     2.9    39.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 348 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    344A  ALA      3.1    14.2    +      -       -      +
    345A  GLY*     3.6     7.2    -      -       -      +
    347A  ILE*     1.3    79.2    -      -       -      +
    349A  LYS*     1.3    57.9    +      -       -      +
    351A  VAL*     4.3    13.7    -      -       -      +
    352A  SER*     2.7    50.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 349 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  ASP*     3.2    24.1    +      -       -      -
    134A  PHE*     3.7    44.9    -      -       +      +
    163A  PRO*     6.1     0.4    -      -       +      -
    166A  SER*     4.2     4.9    -      -       -      +
    345A  GLY      2.9    15.0    +      -       -      +
    346A  SER*     3.4    13.0    -      -       -      +
    347A  ILE      3.1     0.2    -      -       -      -
    348A  GLU*     1.3    78.0    -      -       -      +
    350A  GLY*     1.3    55.8    +      -       -      +
    352A  SER*     3.7     4.8    -      -       -      -
    353A  PHE*     3.2    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 350 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  PHE*     4.8     0.7    -      -       -      -
    166A  SER*     3.5    28.2    -      -       -      -
    170A  ILE*     3.3    30.5    -      -       -      +
    346A  SER      3.2     4.0    +      -       -      -
    347A  ILE      2.9     6.8    +      -       -      -
    349A  LYS*     1.3    76.9    -      -       -      +
    351A  VAL*     1.3    65.5    +      -       -      +
    352A  SER      3.1     1.3    -      -       -      -
    353A  PHE*     3.2    11.4    +      -       -      +
    354A  ILE*     3.7     4.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 351 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169A  PRO*     3.9    15.6    -      -       +      +
    173A  GLU*     4.0    22.4    -      -       +      +
    306A  PRO*     6.1     0.4    -      -       +      -
    307A  PHE*     5.2     5.2    -      -       +      -
    347A  ILE*     2.9    32.0    +      -       +      +
    348A  GLU*     3.8    15.5    -      -       -      +
    350A  GLY*     1.3    76.1    -      -       -      +
    352A  SER*     1.3    63.7    +      -       -      +
    354A  ILE*     3.4     1.9    +      -       -      +
    355A  ARG*     3.0    56.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 352 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    348A  GLU*     2.7    34.1    +      -       -      -
    349A  LYS*     3.7     6.5    -      -       -      -
    351A  VAL*     1.3    79.7    -      -       -      +
    353A  PHE*     1.3    63.2    +      -       -      +
    354A  ILE      3.0     1.2    +      -       -      -
    355A  ARG*     3.2    11.2    +      -       -      +
    356A  SER*     3.1    28.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 353 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134A  PHE*     4.4    12.1    -      +       +      -
    135A  LYS*     4.2    16.6    -      -       +      -
    138A  ALA*     3.4    44.4    -      -       +      -
    139A  GLY*     3.6    16.2    -      -       -      -
    142A  LYS*     4.4     8.5    -      -       +      -
    170A  ILE*     4.3     8.3    -      -       +      -
    349A  LYS      3.2    12.8    +      -       -      +
    350A  GLY*     3.2    12.9    +      -       -      +
    352A  SER*     1.3    77.4    -      -       -      +
    354A  ILE*     1.3    79.8    +      -       +      +
    356A  SER*     4.8     4.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 354 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  LYS*     3.8    33.8    +      -       +      +
    170A  ILE*     3.8    23.8    -      -       +      +
    173A  GLU*     3.9    26.2    -      -       +      +
    174A  VAL*     3.4    35.7    -      -       +      +
    177A  LYS*     5.0    19.1    +      -       +      +
    350A  GLY      3.7     0.8    +      -       -      +
    351A  VAL      3.4     3.2    +      -       -      +
    352A  SER      3.1     0.4    -      -       -      -
    353A  PHE*     1.3    90.2    -      -       +      +
    355A  ARG*     1.3    55.8    +      -       +      +
    356A  SER      2.8    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 355 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    173A  GLU*     3.0    34.8    +      -       +      +
    176A  LYS*     5.2     5.6    -      -       -      +
    351A  VAL*     3.0    36.8    +      -       +      +
    352A  SER*     3.2     4.8    +      -       -      +
    354A  ILE*     1.3    73.7    -      -       +      +
    356A  SER*     1.3    68.3    +      -       -      +
----------------------------------------------------------
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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