Contacts of the helix formed by residues 230 - 256 (chain B) in PDB entry 3FZM


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 PHE 230 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152B  SER*     3.5    18.6    -      -       -      -
    154B  GLN*     3.9    15.9    -      -       +      -
    155B  GLU*     3.2    53.6    -      -       +      +
    158B  GLU*     4.0    17.5    -      -       +      -
    226B  LEU*     4.5     3.6    -      -       +      -
    227B  PRO*     2.8    50.0    +      -       +      +
    229B  ASN*     1.3    83.8    -      -       -      +
    231B  LYS*     1.3    62.2    +      -       -      +
    232B  ASP      3.2     3.2    +      -       -      -
    233B  SER*     3.3    13.8    +      -       -      -
    234B  ARG*     3.0    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 231 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155B  GLU*     3.8     0.6    +      -       -      -
    228B  GLU      4.5     4.9    -      -       -      +
    229B  ASN      2.7    13.7    +      -       -      +
    230B  PHE*     1.3    72.0    -      -       -      +
    232B  ASP*     1.3    61.8    +      -       -      +
    234B  ARG*     3.6    17.7    +      -       -      +
    235B  LEU*     3.1    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 232 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151B  ASN*     4.0    18.7    +      -       -      -
    155B  GLU*     3.4    14.3    +      -       -      +
    159B  LEU*     3.9    16.6    -      -       +      +
    230B  PHE      3.2     0.6    -      -       -      -
    231B  LYS*     1.3    79.5    -      -       -      +
    233B  SER*     1.3    64.1    +      -       -      +
    235B  LEU*     3.5     8.9    +      -       -      +
    236B  LYS*     3.1    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 233 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155B  GLU*     2.9    32.2    +      -       -      +
    158B  GLU*     3.4    18.9    -      -       -      +
    159B  LEU*     3.7    14.8    +      -       -      +
    162B  LEU*     3.4     8.9    -      -       -      +
    226B  LEU*     3.5    21.8    -      -       -      -
    230B  PHE*     3.5    11.4    -      -       -      -
    232B  ASP*     1.3    74.4    -      -       -      +
    234B  ARG*     1.3    57.2    +      -       -      +
    236B  LYS      3.4     0.3    +      -       -      -
    237B  ARG*     2.8    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 234 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  ASP*     4.3     2.9    -      -       -      +
    294A  TYR*     5.3    10.0    +      -       -      +
    226B  LEU*     3.7    29.4    -      -       +      +
    227B  PRO      3.3    22.2    -      -       -      -
    228B  GLU*     2.8    47.2    +      -       -      +
    230B  PHE      3.0    17.1    +      -       -      +
    231B  LYS*     3.9    15.4    -      -       -      +
    233B  SER*     1.3    75.9    -      -       -      +
    235B  LEU*     1.3    58.0    +      -       -      +
    237B  ARG*     3.9    11.9    -      -       -      +
    238B  LYS*     3.1    27.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 235 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231B  LYS      3.1    18.8    +      -       -      +
    232B  ASP*     3.5    10.7    +      -       -      +
    233B  SER      3.3     0.2    -      -       -      -
    234B  ARG*     1.3    78.3    -      -       -      +
    236B  LYS*     1.3    57.5    +      -       -      +
    238B  LYS*     3.6     6.4    +      -       +      +
    239B  GLY*     3.0    23.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 236 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159B  LEU*     3.7    35.0    -      -       +      +
    162B  LEU*     3.6    29.8    -      -       +      +
    163B  LYS*     4.3    13.0    -      -       -      +
    166B  GLU*     3.1    39.8    +      -       +      +
    232B  ASP      3.1    16.5    +      -       -      +
    233B  SER      3.9     2.5    -      -       -      +
    235B  LEU*     1.3    76.2    -      -       -      +
    237B  ARG*     1.3    58.3    +      -       -      +
    239B  GLY*     4.1     1.1    -      -       -      +
    240B  LEU*     3.1    28.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 237 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283A  GLU*     3.0    39.9    +      -       -      +
    285A  ASP*     3.2    21.9    +      -       -      +
    294A  TYR*     3.2    28.2    +      -       -      -
    162B  LEU*     3.8    16.8    -      -       +      +
    221B  ILE*     3.6    32.2    +      -       +      +
    224B  LEU*     3.3    23.1    +      -       -      +
    226B  LEU*     3.6    35.7    +      -       +      +
    233B  SER      2.8    17.9    +      -       -      +
    234B  ARG*     3.9    12.1    -      -       -      +
    236B  LYS*     1.3    76.2    -      -       -      +
    238B  LYS*     1.3    58.5    +      -       -      +
    240B  LEU*     3.5     2.0    +      -       -      +
    241B  VAL*     3.0    28.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 238 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  ASP*     3.5    22.4    +      -       +      +
    286A  SER*     4.2    13.9    -      -       -      -
    290A  GLY*     4.3     9.7    +      -       -      -
    292A  ASP*     3.2    34.9    +      -       -      +
    234B  ARG      3.1    19.5    +      -       -      +
    235B  LEU*     4.0     7.0    -      -       +      +
    236B  LYS      3.3     0.2    -      -       -      -
    237B  ARG*     1.3    74.6    -      -       -      +
    239B  GLY*     1.3    65.8    +      -       -      +
    241B  VAL*     3.6     1.5    +      -       +      +
    242B  LYS*     3.0    54.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 239 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235B  LEU      3.0    16.7    +      -       -      -
    236B  LYS*     4.1     1.6    -      -       -      -
    238B  LYS*     1.3    77.0    -      -       -      +
    240B  LEU*     1.3    56.2    +      -       -      +
    242B  LYS*     3.7     6.3    -      -       -      +
    243B  LYS*     2.8    31.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 240 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162B  LEU*     4.0    13.9    -      -       +      +
    165B  LEU*     3.9    30.5    -      -       +      +
    166B  GLU*     3.7    32.1    -      -       +      +
    169B  VAL*     3.7    32.5    -      -       +      -
    221B  ILE*     3.9    18.2    -      -       +      -
    236B  LYS      3.1    19.2    +      -       -      +
    237B  ARG*     3.9     4.9    -      -       -      +
    239B  GLY*     1.3    75.1    -      -       -      +
    241B  VAL*     1.3    61.7    +      -       -      +
    243B  LYS*     3.2    13.5    +      -       +      +
    244B  VAL*     2.9    28.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 241 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262A  ARG*     3.7    12.3    -      -       -      +
    285A  ASP*     3.5    37.7    -      -       +      +
    286A  SER*     3.7    15.9    -      -       -      -
    218B  LEU*     4.2    14.4    -      -       +      -
    221B  ILE*     3.7    31.0    -      -       +      -
    222B  ASP*     5.2     0.2    -      -       -      +
    237B  ARG      3.0    22.0    +      -       -      +
    238B  LYS      4.0     3.4    -      -       -      +
    240B  LEU*     1.3    75.0    -      -       -      +
    242B  LYS*     1.3    59.2    +      -       -      +
    244B  VAL*     3.4     2.3    +      -       -      +
    245B  GLN*     3.0    40.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 242 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  SER*     4.7    10.1    -      -       -      +
    238B  LYS*     3.0    53.4    +      -       +      +
    239B  GLY*     3.7     6.1    -      -       -      +
    241B  VAL*     1.3    75.5    -      -       -      +
    243B  LYS*     1.3    60.3    +      -       -      +
    245B  GLN*     3.6     9.8    +      -       -      +
    246B  ALA*     3.2    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 243 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169B  VAL*     4.4    11.6    -      -       +      +
    170B  GLU*     5.2    14.7    +      -       +      +
    239B  GLY      2.8    18.7    +      -       -      +
    240B  LEU*     3.6    13.5    -      -       +      +
    242B  LYS*     1.3    73.8    -      -       -      +
    244B  VAL*     1.3    67.5    +      -       -      +
    246B  ALA*     3.1     8.8    +      -       -      +
    247B  PHE*     3.0    53.7    +      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 244 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169B  VAL*     3.6    35.0    -      -       +      -
    214B  PHE*     3.6    32.1    -      -       +      +
    217B  ILE*     4.1    10.5    -      -       +      -
    218B  LEU*     3.8    28.3    -      -       +      -
    221B  ILE*     5.2     0.2    -      -       +      -
    240B  LEU*     2.9    24.8    +      -       +      +
    241B  VAL      3.7     3.8    -      -       -      +
    243B  LYS*     1.3    71.6    -      -       -      +
    245B  GLN*     1.3    52.6    +      -       -      +
    247B  PHE*     3.1    12.0    +      -       -      +
    248B  LEU*     2.8    37.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 245 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262A  ARG*     3.0    17.6    -      -       -      +
    286A  SER*     2.6    47.6    +      -       -      -
    287A  LEU      4.7     3.0    +      -       -      -
    218B  LEU*     4.5    13.5    -      -       +      +
    241B  VAL*     3.0    25.3    +      -       +      +
    242B  LYS*     3.7    10.3    -      -       -      +
    243B  LYS      3.2     0.2    -      -       -      -
    244B  VAL*     1.3    76.4    -      -       -      +
    246B  ALA*     1.3    55.8    +      -       -      +
    248B  LEU*     3.4    11.9    +      -       +      +
    249B  ALA*     3.0    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 246 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242B  LYS      3.2    12.6    +      -       -      +
    243B  LYS*     3.1    11.4    +      -       -      +
    245B  GLN*     1.3    72.4    -      -       -      +
    247B  PHE*     1.3    60.9    +      -       +      +
    249B  ALA*     3.5     7.6    +      -       -      +
    250B  GLU*     3.1    36.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 247 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169B  VAL*     3.9     9.4    -      -       +      -
    173B  ALA*     3.7    26.2    -      -       +      -
    176B  LEU*     3.6    11.2    -      -       +      +
    214B  PHE*     3.5    35.9    -      +       +      -
    243B  LYS*     3.0    58.1    +      -       +      -
    244B  VAL*     3.3     6.5    -      -       -      +
    246B  ALA*     1.3    74.3    -      -       +      +
    248B  LEU*     1.3    59.2    +      -       -      +
    250B  GLU*     3.1    32.3    +      -       -      +
    251B  CYS*     2.9    32.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 248 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  ARG*     3.9    26.1    +      -       -      +
    211B  ILE*     3.8    45.8    -      -       +      +
    214B  PHE*     3.9    13.4    -      -       +      -
    215B  MET*     4.2    11.2    -      -       +      -
    218B  LEU*     3.9    27.6    -      -       +      -
    244B  VAL*     2.8    23.9    +      -       +      +
    245B  GLN*     3.5    16.4    -      -       +      +
    246B  ALA      3.3     0.2    -      -       -      -
    247B  PHE*     1.3    72.5    -      -       -      +
    249B  ALA*     1.3    59.3    +      -       -      +
    251B  CYS*     3.1     7.8    +      -       -      +
    252B  ASP*     3.1    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 249 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  ARG*     5.0     0.4    -      -       -      +
    245B  GLN      3.0    14.5    +      -       -      +
    246B  ALA*     3.7    12.1    -      -       -      +
    247B  PHE      3.3     0.2    -      -       -      -
    248B  LEU*     1.3    73.5    -      -       -      +
    250B  GLU*     1.3    62.3    +      -       +      +
    252B  ASP*     3.4    11.0    +      -       -      +
    253B  THR*     3.2    26.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 250 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  LEU*     3.9    17.7    -      -       +      +
    180B  ASN*     5.7     1.9    +      -       -      -
    246B  ALA*     3.1    25.6    +      -       -      +
    247B  PHE*     3.2    40.2    -      -       -      +
    249B  ALA*     1.3    76.6    -      -       +      +
    251B  CYS*     1.3    58.1    +      -       -      +
    253B  THR*     3.5     9.9    +      -       -      -
    254B  VAL*     3.2    25.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 251 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  LEU*     4.1    12.8    -      -       -      -
    207B  VAL*     3.4    16.2    -      -       +      +
    210B  THR*     3.8    29.6    -      -       -      -
    211B  ILE*     3.4    31.2    -      -       +      -
    214B  PHE*     4.1    11.9    -      -       -      -
    247B  PHE      2.9    19.2    +      -       -      -
    248B  LEU*     3.1     6.5    +      -       -      +
    250B  GLU*     1.3    73.1    -      -       -      +
    252B  ASP*     1.3    65.1    +      -       -      +
    254B  VAL*     3.3     7.3    +      -       -      +
    255B  GLU*     3.2    20.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 252 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  ARG*     2.7    46.4    +      -       -      -
    211B  ILE*     3.9     2.8    -      -       -      +
    248B  LEU      3.1    12.8    +      -       -      +
    249B  ALA*     3.7    10.3    -      -       -      +
    250B  GLU      3.3     0.4    -      -       -      -
    251B  CYS*     1.3    73.4    -      -       -      +
    253B  THR*     1.3    66.3    +      -       -      +
    255B  GLU*     3.9    11.9    -      -       -      +
    256B  GLN*     2.6    43.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 253 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249B  ALA      3.2    13.3    +      -       -      -
    250B  GLU*     3.6    12.5    -      -       -      -
    251B  CYS      3.3     0.4    -      -       -      -
    252B  ASP*     1.3    76.5    -      -       -      +
    254B  VAL*     1.3    59.0    +      -       +      +
    256B  GLN*     3.0    22.7    -      -       -      +
    257B  ASN*     3.6    11.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 254 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  LEU*     4.5    11.0    -      -       +      -
    179B  LEU*     5.4     7.0    -      -       +      +
    180B  ASN*     3.8    21.3    -      -       -      +
    183B  LEU*     3.8    26.4    -      -       +      +
    203B  LEU*     6.0     1.3    -      -       +      -
    207B  VAL*     3.6    25.1    -      -       +      -
    250B  GLU      3.2    18.8    -      -       -      +
    251B  CYS*     3.3     9.2    +      -       -      +
    252B  ASP      3.2     0.6    -      -       -      -
    253B  THR*     1.3    77.3    -      -       +      +
    255B  GLU*     1.3    62.0    +      -       -      +
    257B  ASN*     3.2    18.5    -      -       -      +
    258B  ILE*     3.6    16.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 255 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  ARG*     4.9     1.0    +      -       -      -
    204B  ASP*     3.4    17.9    -      -       -      +
    207B  VAL*     3.8    12.5    -      -       +      +
    208B  LYS*     3.1    37.2    +      -       -      +
    211B  ILE*     3.7    24.0    -      -       -      +
    251B  CYS      3.2    10.3    +      -       -      +
    252B  ASP*     3.9     7.8    -      -       -      +
    254B  VAL*     1.3    78.9    -      -       -      +
    256B  GLN*     1.3    81.6    +      -       -      +
    258B  ILE*     3.0    28.8    -      -       -      +
    259B  CYS      5.2     0.2    -      -       -      +
    260B  GLN*     4.1     3.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 256 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252B  ASP*     2.6    46.2    +      -       -      +
    253B  THR*     3.0    10.1    -      -       -      +
    255B  GLU*     1.3    92.5    +      -       -      +
    257B  ASN*     1.3    66.5    +      -       -      +
    260B  GLN*     3.4    17.0    -      -       -      +
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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