Contacts of the helix formed by residues 277 - 304 (chain A) in PDB entry 3WAJ


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 SER 277 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261A  TYR*     2.7    23.8    +      -       -      -
    265A  ALA      2.8     7.8    -      -       -      +
    268A  TYR*     4.1     8.3    -      -       -      -
    270A  GLY      3.2    22.2    -      -       -      -
    272A  SER*     3.0    29.5    +      -       -      -
    275A  PHE      3.0     6.6    +      -       -      -
    276A  TYR*     1.3    73.8    -      -       -      +
    278A  PRO*     1.3    67.5    -      -       -      +
    279A  PHE      3.4     4.9    +      -       -      -
    280A  GLN*     2.7    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 278 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265A  ALA*     3.2    19.3    -      -       +      +
    266A  PHE*     4.1    25.8    -      -       +      -
    268A  TYR      4.3     6.3    -      -       -      +
    270A  GLY      3.5    11.9    -      -       -      +
    271A  PHE*     3.5    22.2    -      -       +      -
    277A  SER*     1.3    86.8    -      -       -      +
    279A  PHE*     1.3    64.0    +      -       -      +
    280A  GLN      3.2     0.4    -      -       -      -
    281A  LEU*     3.2     9.6    +      -       +      +
    282A  LEU*     2.9    28.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 279 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219A  PHE*     3.7    22.9    -      +       -      -
    271A  PHE*     3.8    23.4    -      +       +      -
    272A  SER      3.4    24.9    -      -       -      +
    273A  THR*     3.7    26.2    -      -       +      -
    277A  SER*     3.1    13.8    +      -       -      +
    278A  PRO*     1.3    78.6    -      -       -      +
    280A  GLN*     1.3    69.4    +      -       +      +
    282A  LEU*     3.1    16.8    +      -       +      +
    283A  VAL*     2.9    38.3    +      -       +      +
    331A  PHE*     4.3    29.4    -      +       -      -
----------------------------------------------------------
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Residues in contact with GLN 280 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212A  VAL*     4.3     7.4    -      -       +      -
    216A  GLY*     3.1    33.4    +      -       -      +
    219A  PHE*     3.7    17.9    -      -       +      -
    261A  TYR*     3.1    29.9    +      -       +      +
    272A  SER      3.3    14.5    +      -       -      +
    273A  THR      3.7     9.5    -      -       -      -
    275A  PHE      2.8    21.8    +      -       -      -
    276A  TYR*     4.7     0.2    -      -       -      +
    277A  SER*     2.7    32.2    +      -       -      +
    278A  PRO      3.2     0.2    -      -       -      -
    279A  PHE*     1.3    78.9    -      -       +      +
    281A  LEU*     1.3    57.1    +      -       -      +
    283A  VAL*     3.1    10.7    +      -       -      +
    284A  LEU*     3.0    31.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 281 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  ALA*     3.6    31.6    -      -       +      +
    261A  TYR*     3.3    21.0    -      -       +      -
    262A  LEU*     3.7    33.0    -      -       +      -
    265A  ALA*     3.9    13.0    -      -       +      -
    266A  PHE*     4.2    11.2    -      -       +      -
    278A  PRO*     3.2    13.4    +      -       +      +
    280A  GLN*     1.3    75.2    -      -       -      +
    282A  LEU*     1.3    64.6    +      -       +      +
    284A  LEU*     3.3     3.7    +      -       -      +
    285A  LEU*     2.9    52.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 282 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271A  PHE*     4.2    27.6    -      -       +      -
    278A  PRO*     2.9    22.0    +      -       +      +
    279A  PHE*     3.1    17.5    +      -       +      +
    281A  LEU*     1.3    82.6    -      -       +      +
    283A  VAL*     1.3    55.7    +      -       +      +
    285A  LEU*     4.6     9.6    -      -       +      -
    286A  GLY*     2.7    34.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 283 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219A  PHE*     4.0    27.8    -      -       +      +
    222A  ALA*     3.9    22.7    -      -       +      -
    223A  PRO*     4.7     5.8    -      -       +      -
    279A  PHE*     2.9    50.5    +      -       +      +
    280A  GLN*     3.1     8.3    +      -       -      +
    282A  LEU*     1.3    77.1    -      -       +      +
    284A  LEU*     1.3    57.1    +      -       +      +
    286A  GLY*     3.9     0.6    -      -       -      -
    287A  SER*     2.9    35.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 284 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    208A  ILE*     4.2    13.7    -      -       +      -
    209A  GLY*     5.7     0.4    -      -       -      -
    212A  VAL*     4.2    18.4    -      -       +      -
    219A  PHE*     4.8    10.5    -      -       +      -
    221A  ILE*     5.7     0.2    -      -       +      -
    222A  ALA*     4.1    22.4    -      -       +      -
    254A  PHE*     3.6    19.9    -      -       +      +
    257A  SER*     3.6    42.4    -      -       -      +
    258A  ALA*     4.0    10.3    -      -       +      -
    261A  TYR*     4.1    19.1    -      -       +      -
    280A  GLN*     3.0    17.0    +      -       +      +
    281A  LEU      4.0     1.6    -      -       -      +
    283A  VAL*     1.3    80.4    -      -       +      +
    285A  LEU*     1.3    60.0    +      -       -      +
    287A  SER*     3.6     2.8    +      -       -      -
    288A  ALA*     3.2    15.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 285 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255A  ALA*     5.8     3.4    -      -       -      +
    258A  ALA*     4.0    19.3    -      -       +      -
    281A  LEU*     2.9    41.6    +      -       +      +
    282A  LEU*     4.0    10.3    -      -       +      +
    284A  LEU*     1.3    72.3    -      -       -      +
    286A  GLY*     1.3    67.7    +      -       -      +
    288A  ALA*     3.0    18.9    +      -       +      +
    289A  VAL*     3.1    18.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 286 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282A  LEU      2.7    22.2    +      -       -      -
    283A  VAL*     3.9     0.9    -      -       -      -
    285A  LEU*     1.3    71.7    -      -       -      +
    287A  SER*     1.3    55.8    +      -       -      +
    289A  VAL*     2.9    13.1    +      -       -      +
    290A  ILE*     2.8    35.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 287 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222A  ALA*     3.5    17.5    -      -       -      +
    223A  PRO*     5.4     0.2    -      -       -      +
    226A  LEU*     3.5    16.3    -      -       -      +
    254A  PHE*     3.6    35.3    -      -       -      -
    283A  VAL*     2.9    24.8    +      -       -      +
    284A  LEU      3.7     2.7    -      -       -      -
    286A  GLY*     1.3    75.4    -      -       -      +
    288A  ALA*     1.3    62.4    +      -       -      +
    290A  ILE*     3.4    11.4    +      -       -      +
    291A  ALA*     3.0    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 288 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251A  VAL*     3.7    16.1    -      -       +      +
    254A  PHE*     3.7    18.1    -      -       +      +
    255A  ALA*     4.1    15.7    -      -       +      +
    284A  LEU      3.2    10.5    +      -       -      +
    285A  LEU*     3.0    16.2    +      -       +      +
    287A  SER*     1.3    79.1    -      -       -      +
    289A  VAL*     1.3    62.8    +      -       +      +
    291A  ALA*     3.5     5.7    +      -       -      +
    292A  ALA*     3.1    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 289 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  LEU*     3.3    15.7    -      -       +      +
    286A  GLY*     2.9    10.4    +      -       -      +
    288A  ALA*     1.3    75.0    -      -       +      +
    290A  ILE*     1.3    63.9    +      -       +      +
    292A  ALA*     2.9    11.2    +      -       +      +
    293A  ALA*     2.9    27.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  LEU*     4.0    22.4    -      -       +      -
    286A  GLY      2.8    29.5    +      -       -      +
    287A  SER*     3.6     9.6    -      -       -      +
    289A  VAL*     1.3    73.3    -      -       +      +
    291A  ALA*     1.3    63.8    +      -       -      +
    293A  ALA*     2.9     9.1    +      -       -      +
    294A  PHE*     2.9    50.4    +      -       +      -
    323A  LEU*     4.4     3.6    -      -       +      -
    327A  ILE*     3.4    46.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  LEU*     4.5     0.6    -      -       +      +
    229A  MET*     3.8    15.5    -      -       +      -
    247A  SER*     3.6     9.4    -      -       -      +
    250A  ALA*     3.7    28.7    -      -       +      -
    251A  VAL*     3.7    17.0    -      -       +      +
    254A  PHE*     4.6     1.1    -      -       +      -
    287A  SER      3.0    14.7    +      -       -      +
    288A  ALA      3.6     5.8    -      -       -      +
    289A  VAL      3.3     0.2    -      -       -      -
    290A  ILE*     1.3    79.8    -      -       -      +
    292A  ALA*     1.3    56.5    +      -       -      +
    294A  PHE*     3.2     4.7    +      -       -      +
    295A  TYR*     2.9    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251A  VAL*     3.5    16.3    -      -       +      +
    288A  ALA      3.1    12.7    +      -       -      +
    289A  VAL*     2.9    14.4    +      -       +      +
    291A  ALA*     1.3    73.8    -      -       -      +
    293A  ALA*     1.3    65.7    +      -       -      +
    295A  TYR*     3.3    10.7    +      -       +      +
    296A  GLN*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289A  VAL*     2.9    12.7    +      -       +      +
    290A  ILE*     2.9    11.6    +      -       -      +
    292A  ALA*     1.3    73.0    -      -       -      +
    294A  PHE*     1.3    55.6    +      -       -      +
    296A  GLN*     3.3     8.1    +      -       -      +
    297A  ILE*     2.8    40.6    +      -       +      +
    323A  LEU*     4.2    25.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  LEU*     4.8     6.5    -      -       +      -
    229A  MET*     3.5    33.4    -      -       +      -
    230A  PHE*     3.9    23.1    -      +       +      -
    233A  PHE*     3.5    47.9    -      +       +      -
    247A  SER*     3.8     4.9    -      -       -      +
    290A  ILE*     2.9    45.5    +      -       +      -
    291A  ALA      3.3     7.9    -      -       -      +
    293A  ALA*     1.3    75.5    -      -       -      +
    295A  TYR*     1.3    65.1    +      -       -      +
    297A  ILE*     3.1     7.8    +      -       +      +
    298A  GLU*     3.0    19.4    +      -       -      +
    320A  VAL*     3.7    31.0    -      -       +      -
    323A  LEU*     4.7     9.9    -      -       +      -
    324A  THR*     5.2     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244A  LYS*     3.5    46.4    +      -       +      +
    247A  SER*     3.7    12.5    -      -       -      -
    248A  LEU*     3.5    42.6    -      -       +      +
    251A  VAL*     5.4     0.9    -      -       +      -
    291A  ALA      2.9    13.3    +      -       -      +
    292A  ALA*     3.4    15.3    -      -       +      +
    294A  PHE*     1.3    76.0    -      -       -      +
    296A  GLN*     1.3    59.7    +      -       +      +
    298A  GLU*     3.2     8.6    +      -       -      +
    299A  LYS*     3.0    55.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  ALA      3.1    10.3    +      -       -      +
    293A  ALA*     3.5    10.5    -      -       -      +
    295A  TYR*     1.3    80.2    -      -       +      +
    297A  ILE*     1.3    65.3    +      -       -      +
    299A  LYS*     3.1    33.3    +      -       -      +
    300A  TRP*     2.9    77.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  PHE*     4.4     2.5    -      -       +      -
    293A  ALA*     2.8    28.5    +      -       +      +
    294A  PHE*     3.1    13.4    +      -       +      +
    296A  GLN*     1.3    72.1    -      -       -      +
    298A  GLU*     1.3    62.7    +      -       -      +
    300A  TRP*     3.3    21.7    +      -       +      +
    301A  ASN*     3.0    18.4    +      -       -      +
    306A  PHE*     3.6    13.4    -      -       +      -
    316A  MET*     3.4    30.1    -      -       +      +
    319A  ALA*     4.2    21.8    -      -       +      +
    320A  VAL*     4.0    24.5    -      -       +      -
    323A  LEU*     4.4    18.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  PHE*     3.7     7.2    -      -       +      -
    243A  ARG*     2.6    52.9    +      -       +      +
    244A  LYS*     3.4    27.1    -      -       +      +
    294A  PHE      3.0    12.0    +      -       -      +
    295A  TYR      3.2     8.5    +      -       -      +
    297A  ILE*     1.3    77.2    -      -       -      +
    299A  LYS*     1.3    56.6    +      -       -      +
    301A  ASN*     3.1    10.7    +      -       -      +
    302A  ASP*     2.8    57.5    +      -       -      +
    316A  MET*     3.3    18.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244A  LYS*     3.7    21.1    -      -       +      +
    295A  TYR*     3.0    51.3    +      -       +      +
    296A  GLN*     3.1    32.8    +      -       -      +
    298A  GLU*     1.3    74.7    -      -       -      +
    300A  TRP*     1.3    58.8    +      -       -      +
    302A  ASP*     3.3     8.0    +      -       -      +
    303A  VAL*     3.0    31.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  GLN*     2.9    51.3    +      -       +      +
    297A  ILE*     3.6    22.7    -      -       +      +
    299A  LYS*     1.3    73.4    -      -       +      +
    301A  ASN*     1.3    64.3    +      -       -      +
    303A  VAL*     3.2    11.1    -      -       +      +
    305A  PHE*     2.9    66.4    +      +       +      +
    306A  PHE*     3.9    16.7    +      +       +      -
    319A  ALA*     6.1     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243A  ARG*     4.2     3.8    +      -       -      -
    297A  ILE      3.0    13.1    +      -       -      +
    298A  GLU*     3.2    30.0    -      -       -      +
    300A  TRP*     1.3    77.1    -      -       -      +
    302A  ASP*     1.3    65.2    +      -       -      +
    304A  GLY*     3.1    14.7    +      -       -      -
    306A  PHE*     3.6    26.2    -      -       +      +
    312A  GLY      5.1     4.9    +      -       -      -
    313A  ARG*     5.7     4.2    +      -       -      +
    316A  MET*     4.0    22.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244A  LYS*     3.4    28.8    -      -       -      +
    298A  GLU*     2.8    48.5    +      -       -      +
    299A  LYS*     3.8     4.9    -      -       -      +
    301A  ASN*     1.3    76.9    -      -       -      +
    303A  VAL*     1.3    59.6    +      -       -      +
    304A  GLY*     3.6     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 303 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  LYS      3.0    17.1    +      -       -      +
    300A  TRP*     3.2    26.9    -      -       +      +
    302A  ASP*     1.3    77.2    -      -       -      +
    304A  GLY*     1.3    58.4    +      -       -      +
    305A  PHE*     3.6    12.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    301A  ASN      3.1    13.3    +      -       -      -
    302A  ASP      3.3     0.6    -      -       -      -
    303A  VAL*     1.3    80.3    -      -       -      +
    305A  PHE*     1.3    60.8    +      -       -      +
    306A  PHE      3.4     2.2    -      -       -      -
    307A  GLU*     3.1    17.7    +      -       -      +
    308A  ARG*     2.9    29.2    +      -       -      +
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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