Contacts of the helix formed by residues 321 - 346 (chain A) in PDB entry 3WOO


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 TYR 321 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307A  VAL*     3.6    29.2    -      -       +      -
    317A  ILE*     2.9    29.6    +      -       +      +
    318A  GLN      4.0     1.8    -      -       -      +
    320A  LYS*     1.3    79.1    -      -       +      +
    322A  ALA*     1.3    59.8    +      -       -      +
    323A  ALA      3.3     2.8    +      -       -      -
    324A  THR*     3.3    22.8    +      -       +      -
    325A  MET*     2.8    31.3    +      -       +      +
    328A  TRP*     5.3     0.2    -      +       -      -
    403A  ALA*     5.7     0.3    -      -       -      +
    447A  ARG      3.7    15.7    +      -       -      -
    448A  TYR*     3.5     6.9    -      -       -      -
    449A  VAL*     3.0    48.0    +      -       +      -
    452A  MET*     3.6    27.1    -      -       +      +
    453A  ASP*     3.7    11.3    +      -       -      +
    456A  LEU*     4.3    13.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  TYR*     3.6    20.0    -      -       +      +
     93A  GLN*     4.3     0.2    -      -       +      -
    103A  ILE*     3.9    16.8    -      -       +      -
    318A  GLN      3.3    17.3    +      -       -      +
    319A  VAL      3.4     9.4    +      -       -      +
    320A  LYS      3.4     2.8    -      -       -      -
    321A  TYR*     1.3    78.5    -      -       -      +
    323A  ALA*     1.3    57.9    +      -       -      +
    325A  MET*     4.4     2.0    -      -       -      -
    326A  ALA*     2.9    18.2    +      -       -      +
    804A  GOL      2.8    24.8    +      -       -      +
    807A  GOL      4.0     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  TYR*     3.8    23.5    -      -       +      -
     90A  GLY*     4.3    15.7    -      -       -      +
     93A  GLN*     4.0    21.5    -      -       +      +
    320A  LYS      5.0     0.2    +      -       -      -
    321A  TYR      3.3     0.6    -      -       -      -
    322A  ALA*     1.3    76.0    -      -       -      +
    324A  THR*     1.3    64.5    +      -       -      +
    326A  ALA*     3.3     4.0    +      -       -      +
    327A  GLY*     3.2    17.8    +      -       -      -
    447A  ARG*     4.5    10.1    -      -       +      +
    805A  GOL      5.9     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 324 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320A  LYS      5.3     1.2    +      -       -      -
    321A  TYR*     3.3    25.4    +      -       +      -
    323A  ALA*     1.3    73.7    -      -       -      +
    325A  MET*     1.3    62.4    +      -       -      +
    327A  GLY*     3.2     3.1    +      -       -      -
    328A  TRP*     2.9    69.1    +      -       +      +
    447A  ARG*     5.3    11.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 325 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304A  ILE*     3.8    34.1    -      -       +      +
    307A  VAL*     3.6    32.3    -      -       +      -
    308A  GLU*     3.7    36.3    -      -       +      +
    321A  TYR*     2.8    23.0    +      -       +      +
    322A  ALA*     3.7     5.4    -      -       -      +
    324A  THR*     1.3    81.1    -      -       -      +
    326A  ALA*     1.3    63.8    +      -       -      +
    328A  TRP*     3.8    11.7    -      -       +      -
    329A  ASN*     3.0    35.2    +      -       -      +
    804A  GOL      3.8    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 326 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     89A  TYR*     4.2    13.9    -      -       +      -
    208A  LYS*     3.5    23.5    +      -       -      +
    212A  ASP*     5.0     0.3    -      -       -      +
    322A  ALA      2.9    18.1    +      -       -      +
    323A  ALA*     3.6     5.8    -      -       -      +
    324A  THR      3.3     0.4    -      -       -      -
    325A  MET*     1.3    75.0    -      -       -      +
    327A  GLY*     1.3    57.7    +      -       -      +
    329A  ASN*     3.5     1.7    +      -       -      +
    330A  ASN*     2.9    32.4    +      -       -      +
    804A  GOL      3.4    14.9    +      -       -      +
      3C  ILE*     5.6     2.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 327 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  TYR*     5.4     0.9    -      -       -      -
    323A  ALA      3.2     9.4    +      -       -      -
    324A  THR*     3.2     7.0    +      -       -      -
    325A  MET      3.1     0.4    -      -       -      -
    326A  ALA*     1.3    74.5    -      -       -      +
    328A  TRP*     1.3    66.7    +      -       -      +
    330A  ASN*     3.3     4.5    +      -       -      +
    331A  THR*     3.0    30.8    +      -       -      -
      3C  ILE*     5.1     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 328 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  TYR*     3.7    42.9    -      +       +      -
    303A  GLN*     3.7    48.6    +      -       +      +
    304A  ILE*     3.6    23.7    -      -       +      +
    307A  VAL*     3.7    27.6    -      -       +      -
    321A  TYR*     5.3     1.3    -      +       -      -
    324A  THR*     2.9    44.3    +      -       +      +
    325A  MET*     3.8    22.7    -      -       +      +
    327A  GLY*     1.3    75.6    -      -       -      +
    329A  ASN*     1.3    51.7    +      -       -      +
    332A  SER*     2.8    39.5    +      -       -      -
    456A  LEU*     4.2    14.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 329 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212A  ASP*     3.3    39.4    +      -       -      +
    215A  ASN*     4.8     0.4    -      -       -      -
    304A  ILE*     3.9    31.8    -      -       -      +
    325A  MET*     3.0    30.8    +      -       -      +
    326A  ALA      3.8     1.1    -      -       -      +
    328A  TRP*     1.3    76.7    -      -       -      +
    330A  ASN*     1.3    63.9    +      -       -      +
    332A  SER*     3.3     5.6    +      -       -      -
    333A  LYS*     3.0    27.5    +      -       -      +
    804A  GOL      3.6    14.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 330 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212A  ASP*     4.7     0.2    +      -       -      -
    215A  ASN*     2.9    23.0    +      -       -      +
    216A  TRP*     3.0    19.9    +      -       -      -
    326A  ALA      2.9    19.1    +      -       -      +
    327A  GLY*     3.8     4.9    -      -       -      +
    329A  ASN*     1.3    76.5    -      -       -      +
    331A  THR*     1.3    62.7    +      -       -      +
    334A  ASN*     3.0    26.0    +      -       -      +
      1C  VAL*     2.8    57.5    +      -       +      +
      3C  ILE*     3.5    22.5    +      -       +      +
      5C  PRO*     6.0     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 331 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  ILE*     4.6     0.2    -      -       +      -
    300A  TYR*     3.7    25.9    -      -       +      -
    327A  GLY*     3.0    17.7    +      -       -      -
    330A  ASN*     1.3    78.0    +      -       -      +
    332A  SER*     1.3    66.7    +      -       -      +
    334A  ASN*     3.2     6.1    +      -       -      +
    335A  TYR*     2.9    53.8    +      -       +      +
      5C  PRO*     3.4    30.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 332 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297A  ALA*     4.1    23.1    -      -       -      +
    300A  TYR*     4.0    19.2    -      -       -      -
    301A  LYS*     4.1    12.9    -      -       -      +
    304A  ILE*     3.9     9.0    -      -       -      +
    328A  TRP      2.8    24.5    +      -       -      -
    329A  ASN*     3.3     7.4    +      -       -      -
    331A  THR*     1.3    76.2    -      -       -      +
    333A  LYS*     1.3    64.6    +      -       -      +
    335A  TYR*     3.3     3.6    +      -       -      +
    336A  ASP*     3.0    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 333 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212A  ASP*     2.9    28.9    +      -       +      +
    213A  ILE*     3.0    16.2    +      -       -      +
    215A  ASN*     2.7    32.5    +      -       +      +
    216A  TRP*     3.8    13.9    -      -       +      -
    217A  MET*     3.9     7.0    -      -       -      +
    301A  LYS*     6.0     0.2    -      -       -      +
    329A  ASN      3.0    19.0    +      -       -      +
    330A  ASN*     4.9     0.2    -      -       -      -
    332A  SER*     1.3    74.5    +      -       -      +
    334A  ASN*     1.3    66.7    +      -       -      +
    336A  ASP*     3.4     9.5    +      -       +      +
    337A  GLY      3.0    18.7    +      -       -      -
    677A  TRP*     3.6    27.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 334 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216A  TRP*     3.3    39.6    -      -       +      +
    330A  ASN      3.0    20.5    +      -       -      +
    331A  THR*     3.4     7.2    -      -       -      +
    333A  LYS*     1.3    75.8    -      -       -      +
    335A  TYR*     1.3    71.3    +      -       -      +
    337A  GLY*     3.1     2.6    +      -       -      -
    338A  GLN*     2.9    51.8    +      -       -      +
    680A  VAL*     3.6    18.0    -      -       -      +
      2C  TYR*     5.3     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  THR*     5.9     0.2    -      -       -      +
    293A  TYR*     3.4    70.6    -      +       +      +
    296A  ILE*     3.6    40.9    -      -       +      +
    297A  ALA*     4.4     6.5    -      -       +      -
    331A  THR*     2.9    34.1    +      -       +      +
    332A  SER      3.7     4.7    -      -       -      +
    333A  LYS      3.2     0.2    -      -       -      -
    334A  ASN*     1.3    92.0    -      -       -      +
    336A  ASP*     1.3    65.4    +      -       -      +
    338A  GLN*     3.2     5.7    +      -       -      +
    339A  LEU*     3.0    30.0    +      -       -      +
      5C  PRO*     5.5     7.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 336 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297A  ALA*     4.1     9.5    -      -       -      +
    301A  LYS*     2.6    38.9    +      -       -      -
    332A  SER      3.0    15.8    +      -       -      +
    333A  LYS*     3.5    14.5    -      -       +      +
    335A  TYR*     1.3    75.8    -      -       -      +
    337A  GLY*     1.3    60.8    +      -       -      +
    339A  LEU*     3.4    12.2    +      -       -      +
    340A  GLU*     3.1    24.4    +      -       -      +
    677A  TRP*     4.0    11.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 337 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    333A  LYS      3.0    10.7    +      -       -      -
    334A  ASN      3.1     3.5    +      -       -      -
    336A  ASP*     1.3    73.3    -      -       -      +
    338A  GLN*     1.3    60.5    +      -       -      +
    340A  GLU*     3.3     2.6    +      -       -      +
    341A  GLY*     2.9    26.5    +      -       -      -
    677A  TRP*     3.4    34.6    -      -       -      +
    680A  VAL*     3.3    16.6    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    293A  TYR*     3.4    28.0    +      -       +      -
    334A  ASN*     2.9    37.5    +      -       -      +
    335A  TYR*     3.2     8.2    +      -       -      +
    337A  GLY*     1.3    75.5    -      -       -      +
    339A  LEU*     1.4    51.5    +      -       -      +
    341A  GLY*     3.0     2.1    +      -       -      -
    342A  PHE*     2.7    52.8    +      -       +      -
    680A  VAL*     3.3    33.7    +      -       +      +
    681A  SER*     3.9     4.2    -      -       -      +
    683A  ASN*     3.7     9.4    +      -       -      +
    684A  TRP*     3.2    32.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 339 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289A  ALA*     3.3    36.3    -      -       +      +
    293A  TYR*     4.2    11.7    -      -       +      -
    294A  PRO*     4.1    28.9    -      -       +      -
    297A  ALA*     5.9     0.7    -      -       +      -
    335A  TYR      3.0    23.2    +      -       -      +
    336A  ASP*     3.7    13.5    -      -       -      +
    338A  GLN*     1.4    75.4    -      -       -      +
    340A  GLU*     1.3    62.8    +      -       -      +
    342A  PHE*     3.4    14.7    +      -       +      +
    343A  LYS*     3.3    27.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 340 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    336A  ASP      3.1    16.9    +      -       -      +
    337A  GLY      3.8     4.0    -      -       -      +
    339A  LEU*     1.3    75.1    -      -       -      +
    341A  GLY*     1.4    59.8    +      -       -      +
    343A  LYS*     3.2    12.2    +      -       -      +
    344A  ARG*     2.9    28.5    +      -       +      +
    677A  TRP*     3.1    40.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 341 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    337A  GLY      2.9    17.3    +      -       -      -
    338A  GLN      3.6     1.3    -      -       -      -
    340A  GLU*     1.4    68.5    -      -       -      +
    342A  PHE*     1.3    66.3    +      -       -      +
    344A  ARG*     3.1    20.3    +      -       -      +
    345A  ILE*     3.0    27.7    +      -       -      +
    678A  GLU*     5.2     2.2    -      -       -      -
    681A  SER*     3.5    23.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 342 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  PHE*     3.6    33.2    -      +       +      -
    288A  THR*     5.6     0.2    -      -       +      -
    289A  ALA*     3.8    21.3    -      -       +      -
    293A  TYR*     4.1     9.9    -      +       -      -
    338A  GLN*     2.7    37.4    +      -       +      -
    339A  LEU*     3.6    19.5    -      -       +      +
    340A  GLU      3.2     0.2    -      -       -      -
    341A  GLY*     1.3    77.2    -      -       -      +
    343A  LYS*     1.3    57.8    +      -       +      +
    346A  ASP*     3.0    10.7    +      -       -      -
    347A  ALA*     2.9    42.4    +      -       +      +
    348A  ALA      5.5     0.2    -      -       -      +
    681A  SER*     3.7    20.0    -      -       -      -
    684A  TRP*     3.5    37.9    -      +       +      -
    685A  VAL      5.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 343 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    339A  LEU*     3.3    15.0    +      -       +      +
    340A  GLU*     3.2    10.4    +      -       -      +
    342A  PHE*     1.3    78.0    -      -       +      +
    344A  ARG*     1.3    64.3    +      -       -      +
    345A  ILE      3.4     0.5    +      -       -      -
    346A  ASP*     3.4    10.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 344 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    340A  GLU*     2.9    16.1    +      -       +      +
    341A  GLY*     3.1    15.0    +      -       -      +
    343A  LYS*     1.3    80.3    -      -       -      +
    345A  ILE*     1.3    72.4    +      -       +      +
    678A  GLU*     2.7    52.4    +      -       -      +
    681A  SER*     3.6    15.8    +      -       -      -
    687A  ASP*     2.9    28.5    +      -       -      +
    690A  MET*     3.9    27.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 345 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    341A  GLY      3.0    12.9    +      -       -      +
    342A  PHE      4.1     0.2    -      -       -      +
    344A  ARG*     1.3   109.2    -      -       +      +
    346A  ASP*     1.3    64.4    +      -       -      +
    347A  ALA*     4.0    13.0    -      -       +      +
    350A  GLN*     2.8    36.3    -      -       -      +
    681A  SER*     4.5    10.8    -      -       -      +
    685A  VAL*     3.8    39.0    -      -       +      +
    687A  ASP*     3.8    18.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 346 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  PHE      3.0     9.3    +      -       -      -
    343A  LYS*     3.4    10.0    +      -       -      +
    344A  ARG      3.5     0.4    +      -       -      -
    345A  ILE*     1.3    80.5    -      -       -      +
    347A  ALA*     1.3    64.5    +      -       -      +
    348A  ALA*     3.2     6.3    +      -       -      +
    349A  GLY*     3.1    25.9    +      -       -      -
    350A  GLN*     2.9    20.0    +      -       +      +
    353A  ARG*     3.9    15.5    +      -       -      +
----------------------------------------------------------
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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