Contacts of the helix formed by residues 285 - 312 (chain C) in PDB entry 2PWZ


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 285 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187C  SER*     3.9    17.8    +      -       -      -
    199C  VAL*     5.9     0.5    -      -       -      +
    284C  LEU*     1.3    76.2    -      -       -      +
    286C  ALA*     1.3    53.2    +      -       -      +
    287C  PHE*     3.5     8.9    +      -       -      +
    288C  GLU*     3.0    37.9    +      -       -      +
    289C  GLN*     2.8    34.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 286 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285C  SER*     1.3    74.0    -      -       -      +
    287C  PHE*     1.3    62.6    +      -       -      +
    289C  GLN*     3.8    12.8    -      -       -      +
    290C  ASN*     3.0    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 287 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183C  LEU*     5.2     2.9    -      -       +      -
    196C  GLU*     5.6     2.7    -      -       +      -
    199C  VAL*     3.4    35.7    -      -       +      -
    200C  ALA*     4.3    17.7    -      -       +      -
    203C  THR*     3.7    31.9    -      -       +      -
    285C  SER*     3.2     7.9    +      -       -      +
    286C  ALA*     1.3    78.9    -      -       -      +
    288C  GLU*     1.3    67.5    +      -       +      +
    290C  ASN*     3.5    10.6    +      -       -      +
    291C  ALA*     2.9    34.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 288 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183C  LEU*     3.5    22.2    -      -       +      +
    184C  PRO      3.9     3.1    -      -       -      +
    185C  LEU*     3.4    22.8    -      -       +      +
    186C  LEU*     3.1    12.8    +      -       -      +
    187C  SER*     2.7    47.7    +      -       -      -
    199C  VAL*     6.1     2.0    -      -       +      +
    283C  THR      4.4     0.5    -      -       -      +
    284C  LEU*     3.6    20.6    -      -       +      +
    285C  SER*     3.0    26.0    +      -       -      +
    287C  PHE*     1.3    83.3    -      -       +      +
    289C  GLN*     1.3    53.7    +      -       -      +
    291C  ALA      3.2     0.5    +      -       -      -
    292C  LEU*     2.8    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 289 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284C  LEU*     3.0    40.4    +      -       +      +
    285C  SER      2.8    23.4    +      -       -      +
    286C  ALA*     3.8     9.3    -      -       -      +
    288C  GLU*     1.3    72.2    -      -       -      +
    290C  ASN*     1.3    61.6    +      -       -      +
    292C  LEU*     3.4     6.6    +      -       +      +
    293C  GLU*     3.1    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 290 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286C  ALA      3.0    18.6    +      -       -      +
    287C  PHE*     3.7    10.4    +      -       -      +
    289C  GLN*     1.3    73.1    -      -       -      +
    291C  ALA*     1.3    62.1    +      -       -      +
    293C  GLU*     3.4     4.3    +      -       -      +
    294C  GLY*     2.9    28.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 291 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180C  VAL      4.7     4.6    -      -       -      +
    183C  LEU*     3.6    24.5    -      -       +      -
    203C  THR*     5.9     1.3    -      -       +      -
    207C  GLN*     5.8     4.9    -      -       -      +
    287C  PHE*     2.9    29.0    +      -       +      +
    288C  GLU*     3.2     4.9    +      -       -      +
    290C  ASN*     1.3    79.5    -      -       -      +
    292C  LEU*     1.3    62.1    +      -       -      +
    294C  GLY*     3.6     1.7    +      -       -      -
    295C  MET*     3.3    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 292 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    174C  ILE*     4.9     0.7    -      -       +      -
    183C  LEU*     3.4    15.0    -      -       +      +
    260C  TYR*     3.4    41.3    -      -       +      +
    264C  PHE*     3.6    34.3    -      -       +      -
    281C  ILE*     4.4     4.3    -      -       +      -
    284C  LEU*     4.0    18.8    -      -       +      -
    288C  GLU      2.8    20.3    +      -       -      +
    289C  GLN*     3.6     6.7    -      -       -      +
    290C  ASN      3.3     0.2    -      -       -      -
    291C  ALA*     1.3    72.2    -      -       -      +
    293C  GLU*     1.3    66.2    +      -       +      +
    295C  MET*     3.0    25.6    -      -       -      +
    296C  LEU*     3.2    23.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 293 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260C  TYR*     4.1    16.1    -      -       -      -
    289C  GLN*     3.1    16.0    +      -       +      +
    290C  ASN*     4.2     4.0    -      -       -      +
    292C  LEU*     1.3    80.2    -      -       +      +
    294C  GLY*     1.3    61.2    +      -       -      +
    295C  MET      3.2     1.4    +      -       -      -
    296C  LEU*     3.5    36.4    +      -       -      +
    297C  ASP*     5.0     1.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 294 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180C  VAL*     5.0     5.8    -      -       -      +
    290C  ASN      2.9    17.2    +      -       -      -
    291C  ALA*     4.0     2.7    -      -       -      -
    293C  GLU*     1.3    75.6    -      -       -      +
    295C  MET*     1.3    58.5    +      -       -      +
    297C  ASP*     5.2     2.2    +      -       -      +
    298C  THR*     5.0     3.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 295 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175C  GLY*     4.2    11.2    -      -       -      -
    180C  VAL*     3.4    35.2    -      -       +      +
    181C  THR*     3.6    29.6    -      -       +      +
    183C  LEU*     5.3     4.9    -      -       +      -
    264C  PHE*     4.7     0.2    -      -       -      -
    291C  ALA      3.3    12.0    +      -       -      +
    292C  LEU*     3.0    29.2    -      -       -      +
    293C  GLU      3.1     0.2    -      -       -      -
    294C  GLY*     1.3    75.9    -      -       -      +
    296C  LEU*     1.3    77.4    +      -       +      +
    297C  ASP      3.2     2.7    -      -       -      -
    298C  THR*     3.2     8.7    +      -       -      -
    299C  LEU*     3.1    58.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 296 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259C  GLN      5.3     0.2    -      -       -      +
    260C  TYR*     3.7    48.6    -      -       +      +
    264C  PHE*     4.4     1.6    -      -       +      -
    292C  LEU*     3.2    31.2    -      -       +      +
    293C  GLU*     3.5    38.7    +      -       -      +
    295C  MET*     1.3    94.6    -      -       +      +
    297C  ASP*     1.3    60.4    +      -       -      +
    299C  LEU*     3.5     4.1    +      -       +      +
    300C  LYS*     3.0    47.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 297 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293C  GLU      5.0     1.7    +      -       -      -
    294C  GLY      5.8     1.8    -      -       -      +
    295C  MET      3.2     0.8    -      -       -      -
    296C  LEU*     1.3    77.9    -      -       -      +
    298C  THR*     1.3    65.0    +      -       -      +
    300C  LYS*     3.4    19.1    +      -       -      +
    301C  LYS*     3.0    35.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 298 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178C  SER*     5.6     1.3    -      -       -      +
    180C  VAL*     4.2    18.8    -      -       +      +
    181C  THR*     3.7    18.2    -      -       +      -
    294C  GLY      5.0     3.0    +      -       -      -
    295C  MET*     3.2    12.2    +      -       -      -
    297C  ASP*     1.3    78.0    -      -       -      +
    299C  LEU*     1.3    63.6    +      -       -      +
    301C  LYS*     3.2    11.6    +      -       -      +
    302C  ASP*     3.0    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 299 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122C  ASN*     3.4    33.7    -      -       -      +
    175C  GLY      4.5     4.0    -      -       -      +
    176C  GLY*     4.0     7.4    -      -       -      -
    181C  THR*     3.9     3.8    -      -       +      +
    253C  TYR*     3.6    19.1    -      -       +      +
    261C  ALA*     3.7    21.3    -      -       +      -
    263C  PHE      3.7     9.4    -      -       -      +
    264C  PHE*     4.0    15.0    -      -       +      -
    295C  MET*     3.1    37.2    +      -       +      -
    296C  LEU*     3.8     4.0    -      -       +      +
    298C  THR*     1.3    77.5    -      -       -      +
    300C  LYS*     1.3    57.6    +      -       -      +
    302C  ASP*     3.1     9.0    +      -       -      +
    303C  ILE*     2.9    39.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 300 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260C  TYR      3.3    22.2    +      -       -      -
    261C  ALA*     4.1    15.3    -      -       +      +
    296C  LEU*     3.0    36.4    +      -       -      +
    297C  ASP*     3.7    17.2    +      -       -      +
    299C  LEU*     1.3    72.5    -      -       -      +
    301C  LYS*     1.3    59.3    +      -       -      +
    303C  ILE*     3.5     9.8    +      -       +      +
    304C  ALA*     3.0    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 301 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297C  ASP*     3.0    27.0    +      -       -      +
    298C  THR*     3.2    10.5    +      -       -      +
    300C  LYS*     1.3    73.7    -      -       -      +
    302C  ASP*     1.3    65.9    +      -       -      +
    304C  ALA*     3.4     5.8    +      -       -      +
    305C  LEU*     3.0    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 302 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    120C  PRO*     6.3     1.1    -      -       -      -
    122C  ASN*     2.8    44.9    +      -       +      -
    123C  THR*     2.8    29.5    +      -       -      +
    178C  SER*     4.1     6.8    +      -       -      -
    181C  THR*     4.2     0.2    -      -       -      +
    298C  THR*     3.0    31.1    +      -       -      +
    299C  LEU*     3.1    10.3    +      -       -      +
    301C  LYS*     1.3    78.5    -      -       -      +
    303C  ILE*     1.3    63.7    +      -       -      +
    305C  LEU*     3.6     5.5    +      -       -      +
    306C  GLY      3.4    10.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 303 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    122C  ASN      3.9     6.5    -      -       -      +
    126C  ALA*     3.6     3.9    -      -       +      +
    253C  TYR*     3.3    19.7    -      -       -      +
    261C  ALA*     3.6    30.5    -      -       +      -
    262C  ARG*     4.0     8.5    -      -       +      +
    263C  PHE*     3.6    42.6    -      -       +      +
    299C  LEU*     2.9    23.3    +      -       +      +
    300C  LYS*     3.7     7.4    -      -       +      +
    301C  LYS      3.2     0.2    -      -       -      -
    302C  ASP*     1.3    76.1    -      -       -      +
    304C  ALA*     1.3    61.6    +      -       -      +
    306C  GLY*     3.0    12.1    +      -       -      -
    307C  GLU*     3.1    35.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 304 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300C  LYS      3.0    17.5    +      -       -      +
    301C  LYS*     3.4     7.4    +      -       -      +
    303C  ILE*     1.3    75.3    -      -       -      +
    305C  LEU*     1.3    57.0    +      -       -      +
    307C  GLU*     3.3    16.5    +      -       -      +
    308C  GLU*     2.9    51.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 305 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91C  PHE*     3.7    42.8    -      -       +      -
    120C  PRO*     5.9     1.1    -      -       +      -
    123C  THR*     4.1    10.1    -      -       -      +
    301C  LYS      3.0    17.3    +      -       -      +
    302C  ASP*     3.6     7.9    -      -       -      +
    304C  ALA*     1.3    76.3    -      -       -      +
    306C  GLY*     1.3    55.1    +      -       -      +
    308C  GLU*     3.8    13.5    +      -       -      +
    309C  PHE*     3.2    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 306 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    123C  THR*     3.7    15.6    -      -       -      +
    126C  ALA*     4.1     0.7    -      -       -      -
    127C  ILE*     3.5    39.8    -      -       -      +
    302C  ASP      3.4     4.4    +      -       -      -
    303C  ILE      3.0     7.5    +      -       -      -
    305C  LEU*     1.3    77.2    -      -       -      +
    307C  GLU*     1.3    63.5    +      -       -      +
    309C  PHE*     3.4     9.4    +      -       -      +
    310C  VAL*     3.7     8.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 307 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126C  ALA*     4.1     3.5    -      -       +      +
    130C  GLU*     4.0    12.8    -      -       +      +
    262C  ARG*     3.0    45.5    +      -       -      +
    303C  ILE*     3.1    24.9    +      -       +      +
    304C  ALA*     3.7    17.9    -      -       -      +
    306C  GLY*     1.3    74.8    -      -       -      +
    308C  GLU*     1.3    58.4    +      -       +      +
    310C  VAL*     3.4     3.8    +      -       -      +
    311C  ASN*     3.0    41.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 308 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304C  ALA*     2.9    37.9    +      -       -      +
    305C  LEU*     4.1    14.5    -      -       +      +
    307C  GLU*     1.3    74.5    -      -       +      +
    309C  PHE*     1.3    67.5    +      -       -      +
    311C  ASN*     4.9     1.3    -      -       -      -
    312C  LYS*     2.9    44.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 309 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     91C  PHE*     4.3    10.8    -      +       +      -
     92C  ASN*     3.8    28.7    -      -       +      -
     95C  ALA*     3.6    31.6    -      -       +      -
     96C  GLY*     3.6    22.4    -      -       -      -
     99C  LYS*     3.8    26.2    +      -       +      -
    127C  ILE*     4.0    17.5    -      -       +      -
    305C  LEU      3.2    18.7    +      -       -      +
    306C  GLY      3.6     6.7    -      -       -      +
    307C  GLU      3.3     0.6    -      -       -      -
    308C  GLU*     1.3    75.8    -      -       -      +
    310C  VAL*     1.3    67.8    +      -       +      +
    312C  LYS*     3.9    21.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 310 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99C  LYS*     4.4    22.1    +      -       +      +
    127C  ILE*     3.7    40.6    -      -       +      +
    130C  GLU*     3.8    23.8    -      -       +      -
    131C  VAL*     4.3    11.0    -      -       +      +
    134C  LYS*     3.8    35.8    +      -       +      +
    306C  GLY      3.7     9.4    +      -       -      +
    307C  GLU      3.4     2.8    +      -       -      +
    308C  GLU      3.1     0.2    -      -       -      -
    309C  PHE*     1.3    85.2    -      -       +      +
    311C  ASN*     1.3    61.3    +      -       -      +
    312C  LYS*     3.3     9.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 311 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    130C  GLU*     3.1    31.0    +      -       -      +
    134C  LYS*     3.9    27.6    -      -       -      +
    307C  GLU*     3.0    24.1    +      -       -      +
    308C  GLU*     4.9     1.1    -      -       -      -
    310C  VAL*     1.3    79.2    -      -       -      +
    312C  LYS*     1.3    71.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 312 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308C  GLU*     2.9    37.0    +      -       -      +
    309C  PHE*     3.9    26.8    +      -       -      +
    310C  VAL      4.3     5.4    -      -       -      +
    311C  ASN*     1.3    85.1    -      -       -      +
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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