Contacts of the helix formed by residues 314 - 340 (chain A) in PDB entry 3NC0


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 ASP 314 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  PRO*     4.5     9.7    -      -       -      +
    259A  MET*     5.5     3.2    -      -       -      -
    261A  ARG*     2.8    36.5    +      -       -      +
    262A  ASN*     3.6    17.5    -      -       -      +
    312A  LYS*     2.7    10.9    +      -       +      -
    313A  ASP*     1.3    77.5    -      -       -      +
    315A  GLU*     1.3    61.1    +      -       -      +
    316A  GLN      3.1     4.6    +      -       -      -
    317A  ASN      3.7     1.3    +      -       -      +
    318A  PHE*     3.3    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 315 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261A  ARG*     3.9    23.8    -      -       -      +
    298A  LEU*     5.4     8.5    -      -       +      +
    307A  ALA*     3.4    40.9    -      -       +      +
    310A  ASN      3.8    11.1    -      -       -      +
    311A  GLY*     4.0     4.5    -      -       -      -
    312A  LYS*     3.3    12.2    +      -       -      +
    314A  ASP*     1.3    78.4    +      -       -      +
    316A  GLN*     1.3    57.9    +      -       -      +
    318A  PHE*     4.1     4.2    -      -       +      +
    319A  ILE*     3.3    25.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 316 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308A  TYR*     2.9    72.7    +      -       +      +
    309A  SER*     5.0     2.0    +      -       -      +
    311A  GLY*     3.8    19.6    +      -       -      -
    312A  LYS      3.0    21.9    +      -       -      +
    313A  ASP*     4.5     9.2    -      -       -      +
    315A  GLU*     1.3    77.7    -      -       -      +
    317A  ASN*     1.3    72.4    +      -       -      +
    318A  PHE      3.2     1.6    -      -       -      -
    319A  ILE*     3.1    14.9    +      -       -      +
    320A  GLN*     3.2    10.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 317 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262A  ASN*     3.7    18.6    -      -       -      +
    313A  ASP*     3.5    32.3    +      -       -      +
    314A  ASP      3.7     1.5    +      -       -      +
    316A  GLN*     1.3    79.0    -      -       -      +
    318A  PHE*     1.3    52.8    +      -       -      +
    320A  GLN*     3.1    11.8    +      -       -      +
    321A  ASN*     2.7    43.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 318 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255A  LEU*     4.6     5.8    -      -       +      -
    261A  ARG*     3.5    56.3    -      -       +      +
    262A  ASN*     3.1    19.3    -      -       -      +
    265A  LEU*     4.1    18.3    -      -       +      +
    294A  LEU*     4.6    12.8    -      -       +      -
    297A  MET*     3.6    29.6    -      -       +      -
    298A  LEU*     3.6    35.0    -      -       +      -
    314A  ASP      3.3    16.5    +      -       -      +
    315A  GLU*     4.1     6.3    -      -       +      +
    316A  GLN      3.2     0.4    -      -       -      -
    317A  ASN*     1.3    78.7    -      -       -      +
    319A  ILE*     1.3    53.9    +      -       +      +
    321A  ASN*     3.2     2.5    +      -       -      +
    322A  LEU*     2.7    37.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 319 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298A  LEU*     5.2    11.4    -      -       +      -
    304A  ILE*     4.0    31.9    -      -       +      +
    307A  ALA*     4.4     6.7    -      -       +      -
    308A  TYR*     3.4    39.0    -      -       +      +
    315A  GLU*     3.3    21.3    -      -       +      +
    316A  GLN      3.1     5.3    +      -       -      +
    318A  PHE*     1.3    78.9    -      -       +      +
    320A  GLN*     1.3    57.3    +      -       -      +
    322A  LEU*     3.1     9.7    +      -       +      +
    323A  SER*     2.9    30.1    +      -       -      -
    357A  VAL*     4.5    13.6    -      -       +      +
    360A  VAL*     4.3     7.9    -      -       +      -
    365A  ILE*     4.1    15.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 320 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308A  TYR*     5.5     2.0    -      -       -      +
    316A  GLN      3.2     8.2    +      -       -      +
    317A  ASN*     3.1    15.1    +      -       -      +
    319A  ILE*     1.3    78.3    -      -       -      +
    321A  ASN*     1.3    68.2    +      -       -      +
    323A  SER*     3.2     9.5    +      -       -      -
    324A  LEU*     3.1    37.5    +      -       -      +
    364A  GLU*     4.4    16.3    -      -       -      +
    365A  ILE*     3.5    26.8    -      -       +      +
    368A  ILE*     4.4    14.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 321 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262A  ASN*     3.0    27.3    +      -       -      +
    265A  LEU*     3.7    18.1    -      -       +      +
    266A  LYS*     3.6    34.7    -      -       +      +
    269A  THR*     4.0     2.6    +      -       -      -
    317A  ASN*     2.7    25.3    +      -       -      +
    318A  PHE      3.6     5.2    -      -       -      +
    320A  GLN*     1.3    80.0    -      -       -      +
    322A  LEU*     1.3    59.9    +      -       -      +
    324A  LEU*     3.5    19.4    +      -       -      +
    325A  PHE*     2.9    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 322 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265A  LEU*     3.7    12.1    -      -       +      +
    294A  LEU*     4.0    33.0    -      -       +      -
    298A  LEU*     4.5    21.5    -      -       +      -
    304A  ILE*     5.8     2.7    -      -       +      -
    318A  PHE*     2.7    18.2    +      -       +      +
    319A  ILE*     3.1    12.3    +      -       +      +
    321A  ASN*     1.3    74.9    -      -       -      +
    323A  SER*     1.3    64.7    -      -       -      +
    325A  PHE*     4.4     5.2    -      -       +      +
    326A  LEU*     2.9    56.0    +      -       +      +
    353A  TYR*     4.5    14.6    -      -       +      -
    357A  VAL*     3.9    23.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 323 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319A  ILE      2.9    13.1    +      -       -      -
    320A  GLN*     3.3    10.8    -      -       -      -
    322A  LEU*     1.3    76.0    -      -       -      +
    324A  LEU*     1.3    57.3    +      -       -      +
    326A  LEU*     4.2     0.3    -      -       -      +
    327A  CYS*     2.9    35.7    +      -       -      +
    354A  MET*     4.6     8.9    -      -       -      +
    357A  VAL*     3.2    31.2    -      -       -      +
    365A  ILE*     3.4    11.7    -      -       -      +
    368A  ILE*     3.8    26.9    -      -       -      +
    369A  CYS*     4.5     3.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 324 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266A  LYS*     6.4     0.2    -      -       +      -
    269A  THR*     4.2    14.4    -      -       +      -
    320A  GLN*     3.1    25.6    +      -       -      +
    321A  ASN*     3.7    22.9    -      -       -      +
    322A  LEU      3.2     0.2    -      -       -      -
    323A  SER*     1.3    76.3    -      -       -      +
    325A  PHE*     1.3    57.5    +      -       -      +
    327A  CYS*     4.7     1.1    -      -       -      -
    328A  THR*     2.9    40.8    +      -       -      +
    368A  ILE*     3.5    32.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 325 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265A  LEU*     3.7    20.6    -      -       +      -
    268A  LEU*     4.3    13.9    -      -       +      -
    269A  THR*     3.0    37.2    +      -       -      +
    272A  ALA*     4.2    18.1    -      -       +      +
    286A  LEU*     5.1     4.9    -      -       +      -
    287A  PHE*     4.6    20.6    -      +       -      -
    290A  THR*     3.7    36.8    -      -       +      -
    294A  LEU*     4.7     2.5    -      -       +      -
    321A  ASN      2.9    15.8    +      -       -      +
    322A  LEU*     3.8     8.5    -      -       +      +
    324A  LEU*     1.3    77.5    -      -       -      +
    326A  LEU*     1.3    85.6    +      -       +      +
    328A  THR*     3.9     1.0    -      -       -      -
    329A  PHE*     3.1    34.0    +      +       +      +
----------------------------------------------------------
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Residues in contact with LEU 326 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  PHE*     5.0     3.4    -      -       +      -
    291A  MET*     4.5    11.0    -      -       +      -
    294A  LEU*     4.5     9.2    -      -       +      -
    322A  LEU*     2.9    45.1    +      -       +      +
    325A  PHE*     1.3    94.8    -      -       +      +
    327A  CYS*     1.3    63.3    +      -       -      +
    329A  PHE*     3.9     1.9    -      -       -      +
    330A  LEU*     3.1    35.5    +      -       +      +
    350A  ALA*     4.2    15.9    -      -       +      +
    353A  TYR*     3.4    32.1    -      -       +      -
    354A  MET*     3.4    26.7    -      -       +      +
    357A  VAL*     5.2     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 327 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323A  SER      2.9    20.9    +      -       -      +
    324A  LEU*     4.1     1.6    -      -       -      +
    326A  LEU*     1.3    78.1    -      -       -      +
    328A  THR*     1.3    66.3    +      -       -      +
    330A  LEU*     5.3     0.2    -      -       -      -
    331A  LYS*     3.0    42.0    +      -       -      +
    354A  MET*     4.3     7.5    -      -       +      -
    368A  ILE*     3.8    31.2    -      -       +      +
    371A  GLU*     4.5    10.8    -      -       -      -
    372A  TYR*     4.0    30.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 328 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269A  THR*     4.1    20.9    -      -       +      +
    272A  ALA*     4.2     2.0    -      -       +      +
    273A  GLY*     3.8    28.7    -      -       -      +
    324A  LEU*     2.9    32.8    +      -       -      +
    325A  PHE      4.0     2.0    -      -       -      -
    327A  CYS*     1.3    78.3    -      -       -      +
    329A  PHE*     1.3    62.4    +      -       -      +
    331A  LYS*     3.7     5.6    +      -       -      +
    332A  GLU*     3.3    23.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 329 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272A  ALA*     3.3    33.9    -      -       +      -
    283A  PHE*     3.6    23.3    -      +       -      -
    284A  GLU*     5.5     0.2    -      -       -      -
    286A  LEU*     4.9     7.0    -      -       +      -
    287A  PHE*     3.4    52.9    -      +       +      -
    325A  PHE*     3.1    27.9    +      +       +      +
    326A  LEU*     3.9     2.9    -      -       -      +
    328A  THR*     1.3    76.0    -      -       -      +
    330A  LEU*     1.3    63.0    +      -       +      +
    332A  GLU      2.9     1.2    +      -       -      -
    333A  HIS*     2.7    67.0    +      +       +      -
    334A  GLY      3.3     1.9    +      -       -      -
    336A  LEU*     6.4     0.7    -      -       +      -
    337A  LEU*     3.9    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 330 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    287A  PHE*     4.4    14.1    -      -       +      -
    326A  LEU*     3.1    22.7    +      -       +      +
    329A  PHE*     1.3    77.3    -      -       +      +
    331A  LYS*     1.3    61.9    +      -       -      +
    332A  GLU      4.0     0.2    -      -       -      -
    334A  GLY*     3.0    29.0    +      -       -      -
    335A  GLN*     4.2     2.1    +      -       -      +
    337A  LEU*     3.8    25.6    -      -       +      -
    347A  LEU*     4.0    14.4    -      -       +      -
    350A  ALA*     4.6    10.1    -      -       +      -
    351A  LEU*     3.9    17.9    -      -       +      -
    354A  MET*     4.5    13.0    -      -       +      -
    372A  TYR*     3.3    38.6    +      -       +      +
    375A  HIS*     5.2     1.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 331 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327A  CYS*     3.0    34.6    +      -       -      +
    328A  THR*     3.8     6.3    -      -       -      +
    330A  LEU*     1.3    75.7    -      -       -      +
    332A  GLU*     1.3    60.9    +      -       +      +
    335A  GLN*     4.2     7.8    -      -       -      +
    371A  GLU*     3.0    41.1    +      -       -      +
    372A  TYR*     4.0     6.0    -      -       +      -
    375A  HIS*     3.9    56.6    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    272A  ALA      4.2    15.0    -      -       -      +
    273A  GLY*     4.6    11.7    -      -       -      +
    274A  VAL      3.6    19.5    -      -       -      +
    275A  SER*     4.1    20.1    +      -       -      -
    276A  VAL      5.1     0.9    +      -       -      +
    328A  THR*     3.3    17.3    +      -       +      +
    329A  PHE      2.9     3.9    +      -       -      +
    331A  LYS*     1.3    79.8    -      -       +      +
    333A  HIS*     1.3    67.9    +      -       +      +
    334A  GLY      3.3     3.4    -      -       -      -
    335A  GLN*     3.0    32.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 333 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272A  ALA      3.0    28.0    +      -       -      -
    274A  VAL      3.3    24.0    +      -       -      -
    276A  VAL      4.7     6.4    +      -       -      -
    283A  PHE*     3.2    41.4    -      +       +      -
    329A  PHE*     2.7    46.8    +      +       +      +
    332A  GLU*     1.3    84.4    +      -       +      +
    334A  GLY*     1.3    58.2    +      -       -      -
    335A  GLN      3.0     5.6    -      -       -      -
    336A  LEU*     3.1    40.2    +      -       +      +
    337A  LEU*     3.3    10.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 334 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    329A  PHE      3.3     3.0    +      -       -      -
    330A  LEU*     3.0    30.9    +      -       -      -
    333A  HIS*     1.3    78.6    -      -       -      +
    335A  GLN*     1.3    60.4    +      -       -      +
    336A  LEU      3.1     0.2    -      -       -      -
    337A  LEU*     3.3    26.0    +      -       -      +
    338A  GLU*     3.4    20.1    -      -       -      +
    347A  LEU*     5.2     2.7    -      -       -      +
    409A  TYR*     4.6     1.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 335 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330A  LEU      5.0     2.9    -      -       -      +
    331A  LYS      4.2     8.3    -      -       -      +
    332A  GLU*     3.0    27.9    -      -       -      +
    333A  HIS*     3.0     0.6    -      -       -      -
    334A  GLY*     1.3    79.1    -      -       -      +
    336A  LEU*     1.3    58.1    +      -       +      +
    337A  LEU      3.5     0.2    -      -       -      -
    338A  GLU*     3.9    22.3    +      -       -      +
    339A  LYS*     4.4     5.5    +      -       -      +
    375A  HIS*     5.9     3.8    +      -       -      +
    379A  GLU*     5.7     6.5    -      -       +      +
    405A  ARG*     5.4     8.5    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    280A  GLU*     4.0    26.0    -      -       +      +
    283A  PHE*     5.2     4.7    -      -       +      -
    284A  GLU*     3.8    35.9    -      -       +      +
    329A  PHE*     6.4     0.4    -      -       +      -
    333A  HIS*     3.1    39.2    +      -       +      +
    335A  GLN*     1.3    77.7    -      -       +      +
    337A  LEU*     1.3    74.2    +      -       +      +
    338A  GLU      3.1     2.2    -      -       -      -
    339A  LYS*     3.3    40.3    -      -       -      +
    340A  ARG*     3.8     8.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 337 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284A  GLU*     5.4     2.9    -      -       -      -
    287A  PHE*     3.5    45.8    -      -       +      -
    329A  PHE*     3.9    12.8    -      -       +      -
    330A  LEU*     3.8    25.1    -      -       +      -
    333A  HIS      3.3    10.0    +      -       -      +
    334A  GLY*     3.3    16.5    +      -       -      +
    336A  LEU*     1.3    85.0    -      -       +      +
    338A  GLU*     1.3    59.8    +      -       -      +
    340A  ARG      3.8     8.3    -      -       -      +
    343A  LEU*     3.8    45.3    -      -       +      +
    344A  ARG*     4.4     2.1    +      -       -      -
    347A  LEU*     4.1    23.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 338 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334A  GLY      3.4    19.0    -      -       -      +
    335A  GLN*     3.9    13.0    -      -       -      +
    336A  LEU      3.1     0.4    -      -       -      -
    337A  LEU*     1.3    79.3    -      -       -      +
    339A  LYS*     1.3    62.6    +      -       -      +
    340A  ARG      2.8    15.3    -      -       -      +
    344A  ARG*     5.5     4.6    -      -       -      +
    347A  LEU*     4.4     6.5    -      -       +      -
    405A  ARG*     3.2    53.9    +      -       -      +
    408A  LEU*     3.8    24.9    -      -       +      +
    409A  TYR*     2.7    31.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 339 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280A  GLU*     3.0    38.9    +      -       -      +
    335A  GLN      4.4     3.5    +      -       -      +
    336A  LEU*     3.3    36.3    -      -       -      +
    338A  GLU*     1.3    80.2    -      -       -      +
    340A  ARG*     1.3    87.0    +      -       +      +
    341A  LEU*     3.9     1.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 340 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280A  GLU*     2.7    33.0    +      -       -      -
    284A  GLU*     3.4    27.0    +      -       -      +
    336A  LEU      3.8     9.1    +      -       -      +
    337A  LEU      3.8     5.2    -      -       -      +
    338A  GLU      2.8    19.1    -      -       -      +
    339A  LYS*     1.3    90.7    -      -       +      +
    341A  LEU*     1.3    61.0    +      -       -      +
    342A  ASN*     3.4    16.6    -      -       -      +
    343A  LEU*     3.6    19.1    -      -       +      -
    344A  ARG*     4.5     5.4    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il