Contacts of the helix formed by residues 455 - 479 (chain I) in PDB entry 6PST


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 455 (chain I).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30I  ILE*     4.8     6.3    -      -       -      -
     31I  GLN*     4.7     3.8    -      -       -      -
     34I  SER*     2.8    29.4    +      -       -      -
    145I  ILE*     5.2     0.2    -      -       -      -
    146I  VAL      5.1     0.2    -      -       -      -
    147I  SER*     4.3    15.0    -      -       -      +
    453I  ILE*     5.0     2.6    +      -       -      +
    454I  ARG*     1.3    77.8    -      -       -      +
    456I  VAL*     1.3    70.9    +      -       -      +
    457I  GLY      3.3     1.1    -      -       -      -
    458I  GLU*     3.5     6.2    +      -       -      +
    459I  MET*     2.9    35.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 456 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31I  GLN*     3.6    33.7    -      -       -      +
     34I  SER*     4.7     0.4    -      -       -      +
     35I  PHE*     4.1     7.4    -      -       +      -
    130I  MET*     3.7    20.4    -      -       +      -
    136I  PHE*     3.3    28.5    -      -       +      -
    145I  ILE*     3.3    33.9    -      -       +      +
    455I  SER*     1.3    74.6    -      -       -      +
    457I  GLY*     1.3    64.8    +      -       -      +
    459I  MET*     4.9     1.6    -      -       -      -
    460I  ALA*     2.9    30.0    +      -       -      +
    505I  PHE*     5.2     1.6    -      -       +      -
    506I  PHE*     4.1    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 457 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34I  SER*     3.0    33.3    +      -       -      -
     35I  PHE*     4.4     1.1    -      -       -      +
     38I  PHE*     3.6    22.6    -      -       -      -
    456I  VAL*     1.3    78.3    -      -       -      +
    458I  GLU*     1.3    56.2    +      -       -      +
    461I  GLU*     2.9    32.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 458 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34I  SER*     4.2     2.4    +      -       -      +
    452I  ARG*     2.4    39.0    +      -       -      -
    453I  ILE      4.3     6.9    -      -       -      +
    454I  ARG*     3.8    23.8    +      -       +      +
    455I  SER*     3.5    10.2    +      -       -      +
    456I  VAL      3.3     0.2    -      -       -      -
    457I  GLY*     1.3    72.8    -      -       -      +
    459I  MET*     1.3    61.3    +      -       -      +
    461I  GLU*     3.3    13.7    +      -       -      +
    462I  ASN*     2.7    48.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 459 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145I  ILE*     4.1     6.1    -      -       +      -
    146I  VAL      3.0    28.9    -      -       -      +
    148I  GLN*     3.9    25.8    -      -       +      +
    454I  ARG*     4.0    18.2    -      -       +      +
    455I  SER*     2.9    27.9    +      -       -      +
    456I  VAL      4.3     0.9    -      -       -      +
    458I  GLU*     1.3    75.7    -      -       -      +
    460I  ALA*     1.3    61.9    +      -       -      +
    462I  ASN*     3.2    11.6    +      -       -      +
    463I  GLN*     3.0    29.8    +      -       -      +
    505I  PHE*     3.7    24.7    -      -       +      -
    511I  LEU*     3.3    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 460 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35I  PHE*     5.3     0.4    -      -       +      -
     38I  PHE*     3.9    22.6    -      -       +      -
    456I  VAL      2.9    20.7    +      -       -      +
    457I  GLY      4.1     0.2    -      -       -      +
    459I  MET*     1.3    75.2    -      -       -      +
    461I  GLU*     1.3    61.1    +      -       -      +
    463I  GLN*     3.2     7.2    +      -       -      +
    464I  PHE*     2.9    28.8    +      -       -      +
    502I  VAL*     4.4     4.2    -      -       +      +
    505I  PHE*     4.3     6.6    -      -       +      -
    506I  PHE*     3.8    32.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 461 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38I  PHE*     3.7    17.4    -      -       +      -
     46I  GLN      5.5     0.5    -      -       -      +
     47I  TYR*     5.3     1.0    -      -       -      -
     48I  GLY*     3.6    37.1    +      -       -      +
     51I  ALA*     3.9     5.9    -      -       -      +
     52I  ALA*     4.7     3.8    -      -       +      +
    457I  GLY      2.9    19.8    +      -       -      +
    458I  GLU*     3.6    20.2    -      -       -      +
    460I  ALA*     1.3    75.6    -      -       -      +
    462I  ASN*     1.3    58.8    +      -       -      +
    464I  PHE*     3.2     3.5    +      -       -      +
    465I  ARG*     2.3    69.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 462 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179I  TYR*     5.6     4.4    +      -       -      -
    454I  ARG*     4.8    17.2    -      -       -      +
    458I  GLU*     2.7    34.7    +      -       -      +
    459I  MET*     3.2    10.5    +      -       -      +
    461I  GLU*     1.3    77.7    -      -       -      +
    463I  GLN*     1.3    70.3    +      -       -      +
    465I  ARG*     3.1    24.3    +      -       -      +
    466I  VAL*     3.0    26.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 463 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    459I  MET*     3.0    17.4    +      -       -      +
    460I  ALA      3.2     6.5    +      -       -      +
    462I  ASN*     1.3    82.0    -      -       -      +
    464I  PHE*     1.3    61.6    +      -       -      +
    466I  VAL*     3.2    14.7    +      -       -      +
    467I  GLY*     3.0    19.1    +      -       -      -
    498I  ILE      5.1     0.5    -      -       -      +
    501I  ALA*     3.8    31.4    +      -       +      +
    502I  VAL*     4.2    15.0    -      -       +      -
    505I  PHE*     3.8    35.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 464 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38I  PHE*     4.8     5.4    -      +       +      -
     49I  LEU*     3.7    22.7    -      -       +      -
     52I  ALA*     3.9    16.4    -      -       +      -
     53I  PHE*     3.4    37.2    -      +       -      -
     96I  LEU*     3.4    30.1    -      -       +      -
    124I  MET*     4.4     4.7    -      -       -      -
    127I  ILE*     5.5     5.4    -      -       +      -
    460I  ALA      2.9    16.7    +      -       -      +
    461I  GLU*     3.6     8.1    -      -       -      +
    463I  GLN*     1.3    77.3    -      -       -      +
    465I  ARG*     1.3    57.6    +      -       -      +
    467I  GLY*     3.3     1.7    +      -       -      +
    468I  LEU*     2.9    36.2    +      -       +      +
    498I  ILE*     3.4    28.9    -      -       +      -
    502I  VAL*     4.4    15.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 465 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51I  ALA*     4.1    13.1    -      -       -      +
     52I  ALA*     3.5    24.2    -      -       +      +
     55I  SER*     3.7    25.2    +      -       -      +
     56I  VAL*     5.1     0.2    -      -       -      +
    179I  TYR*     5.4     6.4    +      -       -      -
    461I  GLU*     2.3    51.0    +      -       -      +
    462I  ASN*     3.1    26.5    +      -       -      +
    464I  PHE*     1.3    74.4    -      -       -      +
    466I  VAL*     1.3    66.7    +      -       +      +
    468I  LEU*     3.1     7.3    +      -       -      +
    469I  VAL*     2.9    31.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 466 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    462I  ASN*     3.0    17.1    +      -       +      +
    463I  GLN*     3.2    18.6    +      -       -      +
    465I  ARG*     1.3    75.9    -      -       +      +
    467I  GLY*     1.3    64.5    +      -       -      +
    469I  VAL*     3.0    29.7    -      -       +      +
    470I  ARG*     3.1    19.6    +      -       -      +
    501I  ALA*     4.5    12.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 467 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463I  GLN      3.0    13.7    +      -       -      -
    464I  PHE      3.3     3.8    +      -       -      -
    466I  VAL*     1.3    77.9    -      -       -      +
    468I  LEU*     1.3    61.0    +      -       -      +
    470I  ARG*     3.2     7.8    +      -       -      +
    471I  VAL*     2.9    28.1    +      -       -      +
    497I  PRO      4.1    17.0    -      -       -      -
    498I  ILE*     4.0    17.1    -      -       -      +
    501I  ALA*     4.7     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 468 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52I  ALA      3.7    11.9    -      -       -      +
     53I  PHE*     3.5    32.1    -      -       +      -
     56I  VAL*     3.4    44.3    -      -       +      +
     57I  PHE*     4.1     2.9    -      -       +      -
    124I  MET*     4.9     5.6    -      -       +      -
    464I  PHE*     2.9    32.7    +      -       +      +
    465I  ARG*     3.1     8.9    +      -       +      +
    467I  GLY*     1.3    76.3    -      -       -      +
    469I  VAL*     1.3    62.8    +      -       -      +
    471I  VAL*     3.1    17.0    +      -       +      +
    472I  GLU      2.9    22.7    +      -       -      -
    498I  ILE*     4.0    19.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 469 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56I  VAL*     4.2     9.9    -      -       +      -
    465I  ARG*     2.9    18.3    +      -       +      +
    466I  VAL*     3.0    24.9    -      -       +      +
    468I  LEU*     1.3    75.1    -      -       -      +
    470I  ARG*     1.3    65.1    +      -       +      +
    472I  GLU*     3.0    20.9    +      -       -      +
    473I  ARG*     3.1    26.5    +      -       -      +
     33P    A      5.0     7.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 470 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    466I  VAL*     3.1    20.3    +      -       -      +
    467I  GLY*     3.2    11.2    +      -       -      +
    469I  VAL*     1.3    85.7    -      -       +      +
    471I  VAL*     1.3    60.2    +      -       -      +
    473I  ARG*     3.6    17.2    +      -       -      +
    474I  ALA*     3.8     5.0    +      -       -      +
    497I  PRO*     3.3    40.2    +      -       +      -
    500I  ALA*     6.3     0.4    -      -       -      +
    501I  ALA*     6.4     0.4    -      -       -      +
     33P    A      3.3    59.8    +      -       -      +
     34P    T      3.6    23.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 471 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56I  VAL*     5.2     0.9    -      -       +      -
     57I  PHE*     5.0     6.7    -      -       +      -
     59I  ILE*     4.6     7.9    -      -       +      -
    124I  MET*     5.2     2.7    -      -       +      -
    467I  GLY      2.9     7.8    +      -       -      +
    468I  LEU*     3.1    19.3    +      -       +      +
    470I  ARG*     1.3    75.7    -      -       -      +
    472I  GLU*     1.3    69.1    +      -       -      +
    474I  ALA*     3.3     4.5    +      -       -      +
    475I  VAL*     3.0    34.0    +      -       +      +
    493I  ILE*     4.5    15.9    -      -       +      -
    498I  ILE*     3.2    32.8    -      -       +      -
     34P    T      3.1    30.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 472 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55I  SER      5.1     0.7    -      -       -      +
     56I  VAL*     3.0    35.0    -      -       +      +
     59I  ILE*     3.5    34.8    -      -       +      +
    468I  LEU      2.9    12.3    +      -       -      +
    469I  VAL*     3.0    13.8    +      -       -      +
    471I  VAL*     1.3    76.2    -      -       -      +
    473I  ARG*     1.3    64.2    +      -       -      +
    475I  VAL*     4.1     0.2    -      -       -      +
    476I  LYS*     2.9    53.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 473 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    469I  VAL*     3.1    25.2    +      -       -      +
    470I  ARG*     3.6    10.5    -      -       -      +
    471I  VAL      3.2     0.2    -      -       -      -
    472I  GLU*     1.3    78.7    -      -       -      +
    474I  ALA*     1.3    62.7    +      -       -      +
    476I  LYS*     3.8     5.1    -      -       -      +
    477I  GLU*     3.1    23.9    +      -       -      +
     56O    C      5.6     2.7    -      -       -      +
     32P    A      3.6    36.2    +      -       -      -
     33P    A      3.9    33.8    +      -       -      -
     34P    T      5.5     2.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 474 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    470I  ARG      3.8     2.8    +      -       -      +
    471I  VAL      3.3     5.8    +      -       -      +
    473I  ARG*     1.3    80.2    -      -       -      +
    475I  VAL*     1.3    58.1    +      -       -      +
    477I  GLU*     3.1    15.1    -      -       -      +
    478I  ARG*     2.9    30.8    +      -       -      +
    492I  MET      5.3     0.4    -      -       -      -
     34P    T      3.1    62.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 475 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59I  ILE*     3.5    26.9    -      -       +      -
     68I  LEU*     3.6    25.6    -      -       +      -
    471I  VAL*     3.0    22.8    +      -       +      +
    472I  GLU      4.1     0.2    -      -       -      +
    474I  ALA*     1.3    73.4    -      -       +      +
    476I  LYS*     1.3    67.3    +      -       -      +
    478I  ARG*     3.4     4.7    +      -       -      +
    479I  LEU*     2.9    50.9    +      -       +      +
    492I  MET*     4.1    16.8    -      -       +      +
    493I  ILE*     4.0    21.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 476 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59I  ILE*     3.5    18.6    -      -       +      +
     60I  GLN*     4.3    17.3    -      -       -      +
     61I  SER*     5.6     0.2    -      -       -      +
     62I  TYR      4.8     3.7    +      -       -      +
    472I  GLU*     2.9    47.3    +      -       -      +
    473I  ARG*     3.8     4.5    -      -       -      +
    475I  VAL*     1.3    77.9    -      -       -      +
    477I  GLU*     1.3    63.1    +      -       -      +
    479I  LEU*     3.2     8.7    +      -       -      +
    480I  SER*     2.9    19.6    +      -       -      -
     56O    C      3.9    26.6    +      -       -      +
     57O    T      2.3    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 477 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    473I  ARG*     3.1    10.7    +      -       -      +
    474I  ALA*     3.1    31.6    -      -       -      +
    476I  LYS*     1.3    77.1    -      -       -      +
    478I  ARG*     1.3    59.8    +      -       +      +
    480I  SER*     2.8    29.8    +      -       -      -
    481I  LEU*     3.1    18.6    -      -       +      +
     55O    C      4.3    21.5    +      -       -      +
     56O    C      4.7     4.6    -      -       -      -
     32P    A      5.7     5.2    -      -       -      -
     34P    T      4.0    19.4    +      -       -      +
     35P    G      4.4    10.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 478 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    474I  ALA      2.9    19.8    +      -       -      +
    475I  VAL*     4.0     3.1    -      -       -      +
    477I  GLU*     1.3    79.3    -      -       +      +
    479I  LEU*     1.3    58.2    +      -       -      +
    480I  SER      3.1     0.2    -      -       -      -
    481I  LEU*     2.5    48.1    +      -       -      +
    482I  GLY*     4.6     1.2    -      -       -      -
    483I  ASP*     4.0     4.5    +      -       -      +
    484I  LEU*     3.8    21.4    -      -       -      +
    487I  LEU*     3.3    41.5    -      -       +      +
    492I  MET*     3.8    31.6    -      -       +      +
     34P    T      5.9     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 479 (chain I). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59I  ILE*     4.6     5.4    -      -       +      -
     60I  GLN      4.8     0.2    -      -       -      -
     61I  SER*     3.4    36.8    -      -       -      +
     62I  TYR      4.0     0.3    +      -       -      -
     65I  ASN*     3.8     1.9    +      -       -      -
     66I  SER*     3.8    20.4    -      -       -      +
     68I  LEU*     4.5    13.2    -      -       +      +
    102I  LEU*     3.9    18.8    -      -       +      -
    475I  VAL*     2.9    42.3    +      -       +      +
    476I  LYS*     3.5     5.8    -      -       -      +
    478I  ARG*     1.3    74.3    -      -       -      +
    480I  SER*     1.3    56.4    +      -       -      +
    483I  ASP*     2.7    34.9    -      -       +      +
    487I  LEU*     5.6     3.1    -      -       +      -
    492I  MET*     3.8    22.7    -      -       +      -
----------------------------------------------------------
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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