Contacts of the helix formed by residues 464 - 487 (chain A) in PDB entry 3N00


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 464 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    462A  ASP      3.8     1.2    +      -       -      -
    463A  LEU*     1.3    76.1    -      -       -      +
    465A  GLN*     1.3    64.8    +      -       -      +
    466A  HIS      4.2     1.1    -      -       -      -
    467A  ASP*     3.1    27.2    +      -       -      +
    468A  GLN*     2.9    21.7    +      -       -      +
    554A  GLU*     2.9    27.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 465 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    461A  ARG*     3.2    27.2    +      -       -      -
    463A  LEU      3.8     0.4    +      -       -      -
    464A  SER*     1.3    73.1    -      -       -      +
    466A  HIS*     1.3    57.5    +      -       -      +
    468A  GLN*     3.5    11.0    +      -       -      +
    469A  VAL*     2.9    39.7    +      -       +      +
   2063B  PHE*     3.4    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 466 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    464A  SER*     3.2     1.0    +      -       -      -
    465A  GLN*     1.3    79.7    -      -       -      +
    467A  ASP*     1.3    68.1    +      -       -      +
    469A  VAL*     3.5     4.9    +      -       -      +
    470A  THR*     2.8    46.9    +      -       -      -
    552A  GLY*     2.8    26.4    +      -       -      -
    554A  GLU*     3.4    37.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 467 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463A  LEU*     4.2     9.0    -      -       +      -
    464A  SER*     3.1    26.6    +      -       -      +
    466A  HIS*     1.3    78.0    -      -       -      +
    468A  GLN*     1.3    65.8    +      -       -      +
    470A  THR*     3.1     2.6    +      -       -      -
    471A  LEU*     2.9    29.1    +      -       -      +
    553A  MET*     3.6    20.1    -      -       -      +
    554A  GLU*     2.8    31.6    +      -       -      +
    555A  ASN*     2.8    37.0    +      -       -      +
    558A  SER*     4.1     2.8    +      -       -      -
    559A  VAL*     4.5     3.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 468 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    460A  PHE*     3.4    44.8    -      -       +      +
    461A  ARG*     3.0    58.2    +      -       -      +
    463A  LEU*     2.7    27.5    +      -       +      +
    464A  SER      2.9    15.2    +      -       -      +
    465A  GLN*     3.5    13.4    +      -       -      +
    467A  ASP*     1.3    76.1    -      -       -      +
    469A  VAL*     1.3    63.3    +      -       -      +
    471A  LEU*     3.2     0.7    +      -       -      +
    472A  LEU*     3.1    28.0    +      -       -      +
   2063B  PHE*     3.6    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 469 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    465A  GLN*     2.9    29.4    +      -       -      +
    466A  HIS*     3.8     6.1    -      -       -      +
    468A  GLN*     1.3    73.4    -      -       -      +
    470A  THR*     1.3    63.2    +      -       -      +
    472A  LEU*     3.4     4.4    +      -       -      +
    473A  LYS*     3.1    53.2    +      -       -      +
   2059B  ILE*     4.0    13.0    -      -       +      +
   2060B  THR*     5.4     2.0    -      -       -      +
   2063B  PHE*     3.7    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 470 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    466A  HIS*     2.8    41.8    +      -       -      -
    467A  ASP*     3.6     6.7    -      -       -      -
    469A  VAL*     1.3    78.6    -      -       -      +
    471A  LEU*     1.3    56.2    +      -       -      +
    473A  LYS*     3.6     7.7    +      -       -      +
    474A  ALA*     3.0    28.0    +      -       +      +
    549A  ASP      5.2     3.1    -      -       -      +
    551A  SER      3.8    21.8    -      -       -      +
    552A  GLY*     4.1     6.5    +      -       -      +
    553A  MET*     3.5    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 471 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    460A  PHE*     3.9    17.3    -      -       +      -
    463A  LEU*     3.8    28.7    -      -       +      -
    467A  ASP      2.9    11.3    +      -       -      +
    468A  GLN      3.6     4.5    -      -       -      +
    470A  THR*     1.3    75.4    -      -       -      +
    472A  LEU*     1.3    54.7    +      -       -      +
    474A  ALA*     3.6     2.3    -      -       -      +
    475A  GLY*     2.6    34.5    +      -       -      -
    545A  LEU*     3.6    21.5    -      -       +      +
    546A  VAL*     4.2    21.8    -      -       +      +
    548A  ALA*     4.0    21.6    -      -       +      +
    549A  ASP      5.1     0.7    -      -       -      +
    550A  ARG*     5.2     0.2    -      -       +      -
    553A  MET*     3.6    23.8    -      -       +      -
    559A  VAL*     4.1    21.3    -      -       +      -
    562A  LEU*     5.3     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 472 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    450A  VAL*     4.0    11.4    -      -       +      -
    451A  VAL*     4.2    19.3    -      -       +      -
    454A  ALA*     4.0     8.3    -      -       +      -
    460A  PHE*     3.8    19.5    -      -       +      -
    468A  GLN      3.1    18.9    +      -       -      +
    469A  VAL      3.9     3.8    -      -       -      +
    471A  LEU*     1.3    73.4    -      -       -      +
    473A  LYS*     1.3    61.6    +      -       -      +
    476A  THR*     2.4    52.0    +      -       -      +
    545A  LEU*     3.9    27.6    -      -       +      -
   2059B  ILE*     3.5    15.6    -      -       +      +
   2063B  PHE*     3.7    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 473 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    469A  VAL*     3.1    42.2    +      -       +      +
    470A  THR*     3.8     7.6    -      -       -      +
    472A  LEU*     1.3    79.7    -      -       -      +
    474A  ALA*     1.3    62.6    +      -       -      +
    476A  THR      4.4     1.6    +      -       -      -
    477A  PHE*     5.3     1.9    +      -       -      +
   2055B  ILE*     4.6     7.0    -      -       -      +
   2056B  CYS*     3.5    41.3    +      -       +      +
   2059B  ILE*     3.7    14.1    -      -       +      +
   2060B  THR*     2.9    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 474 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    470A  THR*     3.0    20.6    +      -       +      +
    471A  LEU*     3.8     0.9    -      -       -      +
    473A  LYS*     1.3    80.1    -      -       -      +
    475A  GLY*     1.3    57.4    +      -       -      +
    476A  THR      3.8     0.2    -      -       -      -
    477A  PHE*     5.0     2.8    +      -       -      +
    478A  GLU*     4.1     4.0    +      -       -      +
    548A  ALA*     3.7    11.4    -      -       +      +
    549A  ASP*     3.5    31.0    +      -       +      +
    551A  SER      6.1     0.2    -      -       -      +
    599A  ASN*     3.9    20.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 475 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    471A  LEU      2.6    20.2    +      -       -      -
    474A  ALA*     1.3    73.6    -      -       -      +
    476A  THR*     1.3    61.4    +      -       -      +
    477A  PHE      3.5     2.0    -      -       -      -
    478A  GLU*     3.4    13.3    +      -       -      +
    479A  VAL*     3.2    24.6    +      -       -      +
    544A  VAL*     4.7     1.2    -      -       -      +
    545A  LEU*     4.3    12.6    -      -       -      -
    548A  ALA*     3.4    16.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with THR 476 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    447A  VAL*     4.1    24.2    -      -       +      +
    450A  VAL*     4.0    20.5    -      -       +      +
    451A  VAL*     5.5     0.2    -      -       -      +
    472A  LEU*     2.4    55.3    +      -       -      +
    473A  LYS      4.4     0.4    +      -       -      -
    474A  ALA      3.8     0.8    -      -       -      -
    475A  GLY*     1.3    69.6    -      -       -      +
    477A  PHE*     1.3    66.2    +      -       -      +
    479A  VAL*     3.2     7.9    +      -       -      +
    480A  LEU*     2.9    34.4    +      -       +      +
    545A  LEU*     5.1     0.4    -      -       -      -
   2055B  ILE*     3.8    14.4    -      -       +      -
   2059B  ILE*     3.9     3.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 477 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443A  PHE*     5.8     0.2    -      +       -      -
    473A  LYS      5.3     2.1    +      -       -      +
    474A  ALA      5.0     2.8    +      -       -      +
    475A  GLY      3.5     0.6    -      -       -      -
    476A  THR*     1.3    76.9    -      -       -      +
    478A  GLU*     1.3    59.2    +      -       -      +
    480A  LEU*     3.2     8.0    +      -       +      +
    481A  MET*     3.0    64.4    +      -       +      +
    516A  LEU*     4.1     3.1    -      -       +      -
    598A  LEU      3.7     4.5    -      -       -      -
    599A  ASN*     3.6    47.8    -      -       +      +
    602A  HIS*     3.7    23.1    -      -       +      -
    603A  SER*     3.9    17.5    -      -       -      -
   2051B  LEU*     3.4    40.4    -      -       +      -
   2052B  ALA*     6.3     0.2    -      -       -      -
   2055B  ILE*     3.9    19.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 478 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474A  ALA      4.1     9.1    -      -       -      +
    475A  GLY*     3.4    11.0    +      -       -      +
    476A  THR      3.2     0.6    -      -       -      -
    477A  PHE*     1.3    75.7    -      -       -      +
    479A  VAL*     1.3    62.3    +      -       -      +
    481A  MET*     3.2    25.1    +      -       -      +
    482A  VAL*     3.2     7.4    +      -       -      +
    544A  VAL*     3.8    22.8    -      -       +      +
    547A  SER      5.1     0.5    -      -       -      +
    548A  ALA*     4.9     6.1    -      -       -      -
    549A  ASP      5.4     0.9    +      -       -      -
    592A  LEU*     4.9     3.3    -      -       -      +
    595A  LEU*     3.5    47.3    -      -       +      +
    596A  ARG*     3.7    27.4    +      -       -      -
    599A  ASN*     2.9    31.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 479 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  PHE*     5.0     2.2    -      -       +      -
    450A  VAL*     3.8    29.6    -      -       +      -
    453A  PHE*     5.5     2.0    -      -       +      -
    475A  GLY      3.2    15.5    +      -       -      +
    476A  THR*     3.2     9.1    +      -       -      +
    478A  GLU*     1.3    77.7    -      -       -      +
    480A  LEU*     1.3    57.8    +      -       -      +
    482A  VAL*     2.9     9.8    +      -       -      +
    483A  ARG*     2.9    29.3    +      -       +      +
    541A  THR*     3.7    26.2    -      -       +      +
    544A  VAL*     4.0     7.6    -      -       +      -
    545A  LEU*     3.8    37.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 480 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  PHE*     6.2     0.2    -      -       +      -
    443A  PHE*     3.9    31.0    -      -       +      -
    446A  ALA*     3.7    26.5    -      -       +      +
    447A  VAL*     4.1    20.0    -      -       +      -
    450A  VAL*     3.8    20.2    -      -       +      -
    476A  THR*     2.9    23.4    +      -       +      +
    477A  PHE*     3.5     9.4    -      -       +      +
    479A  VAL*     1.3    76.4    -      -       -      +
    481A  MET*     1.3    64.4    +      -       +      +
    483A  ARG*     3.7    11.8    -      -       +      +
    484A  PHE*     2.8    39.2    +      -       +      -
   2051B  LEU*     5.4     0.2    -      -       +      -
   2055B  ILE*     4.3    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 481 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443A  PHE*     5.7     5.6    -      -       +      -
    477A  PHE*     3.0    63.0    +      -       +      +
    478A  GLU*     3.2    13.0    +      -       +      +
    480A  LEU*     1.3    84.4    -      -       +      +
    482A  VAL*     1.3    59.9    +      -       -      +
    484A  PHE*     4.0     5.0    -      -       +      +
    485A  ALA*     3.2    17.3    +      -       -      -
    516A  LEU*     4.4     3.8    -      -       +      -
    520A  MET*     3.3    43.8    -      -       -      +
    523A  PHE*     4.0    11.9    -      -       +      -
    524A  SER*     4.5     1.2    +      -       -      -
    595A  LEU*     3.5    17.7    -      -       +      -
    598A  LEU*     4.3    20.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 482 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    478A  GLU      3.5    13.5    -      -       -      +
    479A  VAL*     2.9    11.5    +      -       -      +
    481A  MET*     1.3    75.0    -      -       -      +
    483A  ARG*     1.3    65.6    +      -       +      +
    485A  ALA*     3.2    13.9    +      -       -      -
    486A  SER*     3.6     5.9    +      -       -      -
    523A  PHE*     4.5     8.7    -      -       +      -
    527A  LEU*     4.2    11.3    -      -       +      +
    537A  LEU*     4.0    21.4    -      -       +      +
    540A  PHE*     3.9    24.0    -      -       +      -
    541A  THR*     3.5    25.8    -      -       +      +
    544A  VAL*     4.2     8.3    -      -       +      -
    595A  LEU*     4.0    16.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 483 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  HIS*     3.6    26.2    +      -       -      -
    300A  PHE*     3.4    65.7    +      -       +      +
    449A  GLU*     5.5     0.4    +      -       -      -
    479A  VAL*     2.9    22.0    +      -       +      +
    480A  LEU*     3.7    18.2    -      -       +      +
    482A  VAL*     1.3    75.0    +      -       -      +
    484A  PHE*     1.3    65.7    +      -       +      +
    486A  SER*     3.1    48.7    +      -       -      -
    487A  LEU*     3.3    13.6    +      -       -      +
    534A  GLU*     5.7     0.6    +      -       -      -
    537A  LEU*     4.7     4.6    -      -       -      +
    541A  THR*     5.1     6.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 484 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    443A  PHE*     6.2     3.6    -      +       -      -
    480A  LEU*     2.8    28.7    +      -       +      +
    481A  MET*     4.0     4.9    -      -       +      +
    483A  ARG*     1.3    71.8    -      -       +      +
    485A  ALA*     1.3    64.1    +      -       -      +
    487A  LEU*     2.8    22.4    +      -       -      -
    488A  PHE*     3.1    13.8    +      -       -      +
    520A  MET*     3.4    41.3    -      -       +      -
    524A  SER*     4.4     1.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 485 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    481A  MET      3.2    10.7    +      -       -      -
    482A  VAL      3.2     7.8    +      -       -      -
    483A  ARG      3.1     1.8    -      -       -      -
    484A  PHE*     1.3    79.0    -      -       -      +
    486A  SER*     1.3    60.6    +      -       -      +
    488A  PHE*     3.6     9.4    -      -       -      +
    523A  PHE*     5.6     0.2    -      -       -      -
    524A  SER*     2.9    38.9    +      -       -      +
    527A  LEU*     4.8     7.0    -      -       -      -
    528A  ASN*     4.0    15.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 486 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    482A  VAL      3.6     6.0    +      -       -      -
    483A  ARG*     3.1    37.9    +      -       -      -
    484A  PHE      3.2     0.2    -      -       -      -
    485A  ALA*     1.3    70.8    -      -       -      +
    487A  LEU*     1.3    60.8    +      -       -      +
    488A  PHE*     2.9    14.2    +      -       -      +
    527A  LEU*     5.4     1.2    -      -       -      +
    528A  ASN*     5.2     6.3    +      -       -      +
    537A  LEU*     4.6    15.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 487 (chain A). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
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    483A  ARG*     3.3    14.5    +      -       -      +
    484A  PHE*     2.8    20.4    +      -       -      +
    486A  SER*     1.3    73.9    +      -       -      +
    488A  PHE*     1.3    60.4    +      -       -      +
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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