Contacts of the helix formed by residues 230 - 257 (chain D) in PDB entry 5AQM


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 D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152D  SER*     3.3    27.4    -      -       -      -
    154D  GLN*     3.9    17.3    -      -       +      -
    155D  GLU*     3.2    49.3    -      -       +      +
    158D  GLU*     3.9    22.9    -      -       +      -
    226D  LEU*     4.3     7.2    -      -       +      -
    227D  PRO*     2.9    41.0    +      -       +      +
    228D  GLU      4.1     1.1    -      -       -      -
    229D  ASN*     1.3    97.3    -      -       -      +
    231D  LYS*     1.3    57.0    +      -       -      +
    233D  SER*     4.0     6.1    -      -       -      -
    234D  ARG*     3.0    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 231 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228D  GLU      4.3     9.0    -      -       -      +
    229D  ASN      2.9    12.7    +      -       -      +
    230D  PHE*     1.3    71.8    -      -       -      +
    232D  ASP*     1.3    61.8    +      -       -      +
    234D  ARG*     3.4     6.3    +      -       -      +
    235D  LEU*     3.0    30.2    +      -       -      +
   1261D  GOL      3.0    14.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 232 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151D  ASN*     4.4     7.4    +      -       -      -
    155D  GLU*     3.9     4.5    -      -       -      +
    159D  LEU*     4.1    16.1    -      -       +      +
    231D  LYS*     1.3    75.1    -      -       -      +
    233D  SER*     1.4    56.6    +      -       -      +
    235D  LEU*     3.4     9.1    +      -       -      +
    236D  LYS*     3.0    30.3    +      -       -      +
   1261D  GOL      2.9    32.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 233 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155D  GLU*     2.8    40.6    +      -       -      +
    158D  GLU*     3.8     8.7    -      -       -      +
    159D  LEU*     3.5    19.3    -      -       -      +
    162D  LEU*     3.4    11.1    -      -       -      +
    226D  LEU*     3.7    23.3    -      -       -      -
    230D  PHE*     3.8     9.9    -      -       -      -
    231D  LYS      3.3     0.2    -      -       -      -
    232D  ASP*     1.4    68.7    -      -       -      +
    234D  ARG*     1.3    60.5    +      -       -      +
    236D  LYS      3.3     0.3    +      -       -      -
    237D  ARG*     2.8    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 234 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283C  GLU*     3.7    16.8    +      -       -      -
    285C  ASP*     4.4     1.9    -      -       -      +
    294C  TYR*     4.2    28.1    -      -       -      +
    226D  LEU*     2.8    43.3    +      -       +      -
    227D  PRO*     3.6     8.7    +      -       -      +
    228D  GLU*     4.0    27.9    -      -       -      +
    230D  PHE      3.0    20.3    +      -       -      +
    231D  LYS*     3.7     6.3    -      -       -      +
    233D  SER*     1.3    74.9    -      -       -      +
    235D  LEU*     1.4    57.7    +      -       -      +
    237D  ARG*     3.4    14.4    +      -       -      +
    238D  LYS*     3.0    30.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 235 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231D  LYS      3.0    17.6    +      -       -      +
    232D  ASP*     3.7     9.2    -      -       -      +
    234D  ARG*     1.4    78.1    -      -       -      +
    236D  LYS*     1.3    56.6    +      -       -      +
    238D  LYS*     3.4     9.4    +      -       +      +
    239D  GLY*     2.9    26.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 236 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159D  LEU*     3.9    19.1    -      -       +      +
    162D  LEU*     3.7    26.5    -      -       +      -
    163D  LYS*     3.8    29.1    -      -       -      +
    166D  GLU*     3.0    46.7    +      -       +      +
    232D  ASP      3.0    17.5    +      -       -      +
    233D  SER*     3.7     4.0    -      -       -      +
    235D  LEU*     1.3    71.9    -      -       -      +
    237D  ARG*     1.3    60.4    +      -       -      +
    239D  GLY*     3.4     1.5    +      -       -      +
    240D  LEU*     2.9    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 237 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283C  GLU*     2.9    40.8    +      -       -      +
    285C  ASP*     3.7    22.6    +      -       -      +
    294C  TYR*     3.5    23.4    +      -       -      -
    162D  LEU*     3.9    16.3    -      -       +      +
    221D  ILE*     3.6    32.5    +      -       +      -
    224D  LEU*     3.2    26.5    +      -       -      -
    226D  LEU*     3.7    22.7    -      -       +      +
    233D  SER      2.8    17.8    +      -       -      +
    234D  ARG*     3.7    22.0    +      -       -      +
    235D  LEU      3.3     0.2    -      -       -      -
    236D  LYS*     1.3    75.9    -      -       -      +
    238D  LYS*     1.3    57.1    +      -       -      +
    240D  LEU*     3.2     3.6    +      -       -      +
    241D  VAL*     2.9    30.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 238 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285C  ASP*     3.2    24.8    +      -       +      +
    286C  SER*     4.0    13.5    -      -       -      -
    290C  GLY*     3.7    15.4    +      -       -      -
    292C  ASP*     2.7    36.2    +      -       -      +
    294C  TYR*     5.6     0.2    -      -       -      +
    234D  ARG      3.0    18.3    +      -       -      +
    235D  LEU*     3.7    11.4    -      -       +      +
    237D  ARG*     1.3    76.8    -      -       -      +
    239D  GLY*     1.3    56.4    +      -       -      +
    241D  VAL*     3.4     2.8    +      -       -      +
    242D  LYS*     3.0    46.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 239 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235D  LEU      2.9    16.5    +      -       -      -
    236D  LYS*     3.9     1.8    -      -       -      -
    238D  LYS*     1.3    75.3    -      -       -      +
    240D  LEU*     1.3    57.3    +      -       -      +
    242D  LYS*     3.4     7.8    +      -       -      +
    243D  LYS*     2.9    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 240 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162D  LEU*     4.1    11.7    -      -       +      +
    165D  LEU*     3.8    25.8    -      -       +      -
    166D  GLU*     3.9    31.4    +      -       +      +
    169D  VAL*     3.8    32.3    -      -       +      -
    221D  ILE*     3.7    24.7    -      -       +      -
    236D  LYS      2.9    18.5    +      -       -      +
    237D  ARG*     3.7     4.5    -      -       -      +
    239D  GLY*     1.3    72.9    -      -       -      +
    241D  VAL*     1.3    65.9    +      -       -      +
    243D  LYS*     3.2    13.9    +      -       +      +
    244D  VAL*     2.9    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 241 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262C  ARG*     4.0    11.0    -      -       -      +
    285C  ASP*     3.6    37.9    -      -       +      +
    286C  SER*     3.9     6.7    -      -       -      -
    218D  LEU*     4.1    14.6    -      -       +      -
    221D  ILE*     3.7    31.4    -      -       +      -
    237D  ARG      2.9    20.2    +      -       -      +
    238D  LYS      3.9     4.0    -      -       -      +
    240D  LEU*     1.3    74.2    -      -       -      +
    242D  LYS*     1.3    57.4    +      -       -      +
    244D  VAL*     3.2     2.4    +      -       -      +
    245D  GLN*     2.8    48.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 242 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286C  SER*     5.2     4.7    -      -       -      +
    238D  LYS*     3.0    39.7    +      -       +      +
    239D  GLY*     3.6     7.2    -      -       -      +
    240D  LEU      3.3     0.2    -      -       -      -
    241D  VAL*     1.3    76.5    -      -       -      +
    243D  LYS*     1.3    55.9    +      -       -      +
    245D  GLN*     3.3    13.8    +      -       -      +
    246D  ALA*     2.9    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 243 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169D  VAL*     4.7     9.9    -      -       +      -
    170D  GLU*     6.4     1.3    -      -       +      -
    239D  GLY      2.9    18.3    +      -       -      +
    240D  LEU*     3.5    15.7    -      -       +      +
    242D  LYS*     1.3    73.7    -      -       -      +
    244D  VAL*     1.3    63.7    +      -       -      +
    246D  ALA*     3.3     7.1    +      -       -      +
    247D  PHE*     3.0    55.7    +      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 244 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169D  VAL*     3.5    37.7    -      -       +      -
    214D  PHE*     3.8    30.5    -      -       +      +
    217D  ILE*     4.0    10.5    -      -       +      -
    218D  LEU*     3.6    32.1    -      -       +      -
    221D  ILE*     4.9     0.2    -      -       +      -
    240D  LEU*     2.9    21.8    +      -       +      +
    241D  VAL      3.7     3.6    -      -       -      +
    243D  LYS*     1.3    76.4    -      -       -      +
    245D  GLN*     1.4    56.8    +      -       -      +
    247D  PHE*     3.1     9.4    +      -       -      +
    248D  LEU*     2.8    30.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 245 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262C  ARG*     3.3    10.1    -      -       -      +
    286C  SER*     2.6    49.4    +      -       -      -
   1383C  TRS      3.1    40.2    +      -       -      +
    218D  LEU*     4.5     6.1    -      -       +      -
    241D  VAL*     2.8    31.4    +      -       +      +
    242D  LYS*     3.7     9.6    -      -       -      +
    244D  VAL*     1.4    72.0    -      -       -      +
    246D  ALA*     1.4    57.7    +      -       -      +
    248D  LEU*     3.3     8.4    +      -       -      +
    249D  ALA*     3.0    27.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 246 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242D  LYS      2.9    17.1    +      -       -      +
    243D  LYS*     3.3     7.4    +      -       -      +
    245D  GLN*     1.4    74.2    -      -       -      +
    247D  PHE*     1.3    65.2    +      -       +      +
    249D  ALA*     3.2     9.9    +      -       -      +
    250D  GLU*     3.1    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 247 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169D  VAL*     3.8    16.4    -      -       +      -
    173D  ALA*     3.6    23.3    -      -       +      -
    176D  LEU*     3.6    14.0    -      -       +      +
    214D  PHE*     3.4    36.8    -      +       +      -
    243D  LYS*     3.0    50.8    +      -       +      -
    244D  VAL*     3.5     5.2    -      -       -      +
    246D  ALA*     1.3    76.8    -      -       +      +
    248D  LEU*     1.3    58.3    +      -       -      +
    250D  GLU*     3.1    24.4    +      -       -      +
    251D  CYS*     2.9    31.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 248 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258C  ARG*     3.8    20.9    -      -       -      +
   1383C  TRS      4.0    12.6    -      -       -      +
    211D  ILE*     3.8    35.0    -      -       +      +
    214D  PHE*     3.7    25.4    -      -       +      -
    215D  MET*     4.0    12.1    -      -       +      -
    218D  LEU*     3.8    28.3    -      -       +      -
    244D  VAL*     2.8    20.5    +      -       +      +
    245D  GLN*     3.3    11.2    +      -       -      +
    247D  PHE*     1.3    75.0    -      -       -      +
    249D  ALA*     1.3    57.9    +      -       -      +
    251D  CYS*     3.2     6.6    +      -       -      +
    252D  ASP*     2.9    34.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 249 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245D  GLN      3.0    12.9    +      -       -      +
    246D  ALA*     3.2    13.2    +      -       -      +
    248D  LEU*     1.3    76.6    -      -       -      +
    250D  GLU*     1.4    57.0    +      -       +      +
    252D  ASP*     3.2    13.5    +      -       -      +
    253D  THR*     3.0    30.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 250 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176D  LEU*     3.8    15.2    -      -       +      +
    180D  ASN*     3.4    23.6    +      -       -      +
    246D  ALA*     3.1    17.7    +      -       -      +
    247D  PHE*     3.1    32.6    +      -       -      +
    249D  ALA*     1.4    72.1    -      -       +      +
    251D  CYS*     1.4    65.7    +      -       -      +
    253D  THR*     3.1    11.6    +      -       -      -
    254D  VAL*     3.0    25.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 251 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176D  LEU*     4.0    11.9    -      -       -      -
    207D  VAL*     3.7    10.1    -      -       +      +
    210D  THR*     3.8    29.8    -      -       -      -
    211D  ILE*     3.4    29.6    -      -       +      -
    214D  PHE*     3.9    14.4    -      -       -      -
    247D  PHE      2.9    17.2    +      -       -      -
    248D  LEU*     3.3     9.2    -      -       -      +
    250D  GLU*     1.4    76.7    -      -       -      +
    252D  ASP*     1.4    57.0    +      -       -      +
    254D  VAL*     3.1     7.1    +      -       -      +
    255D  GLU*     3.0    31.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 252 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258C  ARG*     2.7    43.2    +      -       -      -
    211D  ILE*     4.3     3.3    -      -       -      +
    248D  LEU      2.9    16.0    +      -       -      +
    249D  ALA*     3.2    12.6    +      -       -      +
    251D  CYS*     1.4    73.7    -      -       -      +
    253D  THR*     1.3    59.3    +      -       -      +
    255D  GLU*     3.3    12.0    +      -       -      +
    256D  GLN*     3.0    36.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 253 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183D  LEU*     6.5     0.7    -      -       +      -
    249D  ALA      3.0    14.1    +      -       -      -
    250D  GLU*     3.1    13.4    +      -       -      -
    252D  ASP*     1.3    73.9    -      -       -      +
    254D  VAL*     1.3    64.9    +      -       +      +
    256D  GLN*     3.1    25.4    +      -       -      +
    257D  ASN*     2.9    36.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 254 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176D  LEU*     4.4    12.3    -      -       +      -
    179D  LEU*     5.3     8.5    -      -       +      -
    180D  ASN*     3.5    29.4    -      -       -      +
    183D  LEU*     4.5    17.5    -      -       +      -
    203D  LEU*     5.3     6.3    -      -       +      -
    207D  VAL*     3.8    23.3    -      -       +      -
    250D  GLU      3.0    17.1    +      -       -      +
    251D  CYS      3.1     8.3    +      -       -      +
    253D  THR*     1.3    76.7    -      -       +      +
    255D  GLU*     1.3    56.7    +      -       -      +
    257D  ASN*     2.9    23.4    +      -       -      +
    258D  ILE*     3.2    27.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 255 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258C  ARG*     5.0     1.6    +      -       -      -
    204D  ASP*     4.1     0.9    -      -       -      +
    207D  VAL*     3.8    16.8    -      -       +      +
    208D  LYS*     2.9    40.5    +      -       -      +
    211D  ILE*     3.5    24.1    -      -       +      +
    251D  CYS      3.0    16.8    +      -       -      +
    252D  ASP*     3.3    15.0    +      -       -      +
    254D  VAL*     1.3    75.8    -      -       -      +
    256D  GLN*     1.4    55.8    +      -       +      +
    258D  ILE*     3.2    18.1    -      -       +      +
    260D  GLN*     3.1    17.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 256 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252D  ASP*     3.0    19.6    +      -       -      +
    253D  THR*     3.1    28.1    +      -       -      +
    255D  GLU*     1.4    75.3    -      -       -      +
    257D  ASN*     1.3    64.4    +      -       -      +
    260D  GLN*     3.1    26.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 257 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183D  LEU*     4.2    23.5    -      -       +      +
    187D  GLN*     4.5    13.6    +      -       -      +
    200D  LEU*     4.0    15.2    -      -       -      +
    253D  THR*     2.9    35.3    +      -       -      +
    254D  VAL*     2.9     9.3    +      -       -      +
    256D  GLN*     1.3    84.7    +      -       -      +
    258D  ILE*     1.3    63.4    +      -       -      +
    260D  GLN*     4.2     6.4    -      -       -      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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