Contacts of the helix formed by residues 260 - 286 (chain B) in PDB entry 2GPV


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 260 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  PRO*     3.1    14.9    +      -       -      -
    259B  ASP*     1.3    76.0    -      -       -      +
    261B  ASP*     1.3    76.8    +      -       -      +
    262B  ILE      4.3     1.3    -      -       -      -
    263B  LYS*     3.5     7.6    +      -       -      +
    264B  ALA*     3.3    19.4    +      -       -      +
    339B  LEU*     4.6    14.9    -      -       -      +
    340B  ALA*     5.0     0.5    -      -       -      -
    447B  HIS*     3.4    25.9    -      -       -      -
    295D  ALA*     5.9     4.9    -      -       -      -
    298D  MET*     4.9     4.8    -      -       -      +
    299D  SER*     6.1     0.9    -      -       -      -
    302D  GLN*     5.5     2.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 261 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260B  SER*     1.3    81.5    -      -       -      +
    262B  ILE*     1.3    78.2    +      -       +      +
    264B  ALA*     3.4     4.2    -      -       -      +
    265B  LEU*     3.2    28.2    +      -       +      +
    339B  LEU*     3.5    24.3    +      -       -      +
    340B  ALA*     4.0    13.5    -      -       -      +
    443B  LYS*     5.0    11.6    +      -       -      +
    302D  GLN*     3.7    23.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 262 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260B  SER*     3.3     1.2    +      -       -      -
    261B  ASP*     1.3    87.4    +      -       +      +
    263B  LYS*     1.3    55.1    +      -       -      +
    265B  LEU*     3.8    12.1    -      -       +      +
    266B  THR*     2.6    47.0    +      -       -      +
    443B  LYS*     3.8    13.2    -      -       +      +
    444B  VAL*     3.5    54.5    -      -       +      +
    447B  HIS*     3.4    51.8    -      -       +      +
    448B  LYS*     5.5     0.4    -      -       +      -
    302D  GLN*     4.0     7.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 263 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253B  PRO*     4.4    17.5    -      -       -      +
    254B  ASP*     2.6    30.3    +      -       +      +
    255B  PRO*     4.4     4.4    +      -       -      +
    257B  VAL*     3.0    41.5    +      -       +      -
    258B  PRO      3.8    10.3    -      -       -      +
    259B  ASP*     3.6    21.2    +      -       -      -
    260B  SER*     3.5    24.5    +      -       -      +
    261B  ASP      3.4     0.4    -      -       -      -
    262B  ILE*     1.3    73.4    -      -       -      +
    264B  ALA*     1.3    69.7    +      -       -      +
    266B  THR*     2.9     8.7    +      -       -      -
    267B  THR*     2.7    32.6    +      -       -      +
    330B  TYR*     5.2     5.4    -      -       -      +
    447B  HIS*     4.5     2.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 264 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260B  SER      3.3     8.3    +      -       -      +
    261B  ASP      3.4     5.2    -      -       -      +
    263B  LYS*     1.3    81.8    -      -       -      +
    265B  LEU*     1.3    58.9    +      -       -      +
    267B  THR*     3.0     2.4    +      -       -      -
    268B  LEU*     3.0    35.6    +      -       +      +
    330B  TYR*     3.2    23.3    -      -       -      +
    332B  MET*     4.6     5.4    -      -       +      -
    339B  LEU*     6.4     0.2    -      -       +      -
    340B  ALA*     3.3    34.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 265 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261B  ASP*     3.2    18.9    +      -       +      +
    262B  ILE*     3.8    23.3    -      -       +      +
    263B  LYS      3.1     0.6    -      -       -      -
    264B  ALA*     1.3    76.4    -      -       +      +
    266B  THR*     1.3    68.4    +      -       -      +
    268B  LEU*     3.3     5.5    +      -       +      +
    269B  CYS*     3.0    26.4    +      -       -      +
    340B  ALA      4.2    13.7    -      -       -      +
    342B  LEU*     4.1    21.3    -      -       +      -
    434B  HIS*     5.4     0.9    -      -       -      +
    438B  ILE*     4.0    33.2    -      -       +      -
    444B  VAL*     4.5    11.2    -      -       +      -
    501B  OHT      4.1    20.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 266 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262B  ILE*     2.6    40.9    +      -       -      +
    263B  LYS*     3.3     7.5    -      -       -      -
    265B  LEU*     1.3    75.2    -      -       -      +
    267B  THR*     1.3    65.8    +      -       -      +
    269B  CYS*     3.3     4.9    +      -       -      +
    270B  ASP*     3.2    23.1    +      -       +      +
    444B  VAL*     4.5     9.0    -      -       -      +
    447B  HIS*     5.4     1.4    +      -       -      -
    448B  LYS*     4.7    13.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 267 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  ALA*     4.0    34.4    -      -       +      +
    252B  MET      5.0     0.4    -      -       -      +
    253B  PRO*     4.0    23.6    -      -       +      +
    254B  ASP      5.5     0.5    +      -       -      -
    263B  LYS*     2.7    34.1    +      -       -      +
    264B  ALA*     3.4     7.4    +      -       -      -
    266B  THR*     1.3    77.5    -      -       -      +
    268B  LEU*     1.3    57.5    +      -       -      +
    270B  ASP*     3.6     5.5    +      -       -      +
    271B  LEU*     3.2    26.2    +      -       -      +
    330B  TYR*     4.2    17.0    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 268 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264B  ALA*     3.0    20.9    +      -       +      +
    265B  LEU*     3.3     7.1    +      -       -      +
    267B  THR*     1.3    75.0    -      -       -      +
    269B  CYS*     1.3    60.4    +      -       -      +
    271B  LEU*     3.5    10.2    -      -       +      +
    272B  ALA*     2.8    30.5    +      -       -      +
    326B  TYR*     3.9    33.0    -      -       +      -
    330B  TYR*     3.7    23.8    -      -       +      -
    332B  MET*     4.3    11.0    -      -       -      -
    342B  LEU*     3.8    29.4    -      -       +      -
    501B  OHT      3.6    33.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 269 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265B  LEU      3.0    17.0    +      -       -      +
    266B  THR*     3.8     5.2    -      -       -      +
    268B  LEU*     1.3    76.8    -      -       -      +
    270B  ASP*     1.3    57.8    +      -       -      +
    272B  ALA*     3.5     1.4    +      -       -      +
    273B  ASP*     3.0    44.5    +      -       -      +
    435B  PHE*     4.8     9.4    -      -       +      -
    439B  LYS*     5.8     4.3    -      -       -      -
    501B  OHT      3.9    40.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 270 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  ALA      4.6     4.0    -      -       -      +
    252B  MET      5.7     0.3    -      -       -      +
    266B  THR*     3.2    15.7    +      -       +      +
    267B  THR*     3.9     6.5    -      -       -      +
    269B  CYS*     1.3    77.9    -      -       -      +
    271B  LEU*     1.3    66.4    +      -       -      +
    273B  ASP*     3.2     9.4    +      -       -      +
    274B  ARG*     3.0    49.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 271 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249B  ILE*     3.8    24.5    -      -       +      +
    250B  TYR      4.3     9.0    -      -       -      +
    251B  ALA*     4.1    22.9    -      -       +      -
    267B  THR      3.2    15.4    +      -       -      +
    268B  LEU*     3.5    11.9    -      -       +      +
    270B  ASP*     1.3    77.8    -      -       -      +
    272B  ALA*     1.3    63.8    +      -       -      +
    274B  ARG*     3.0    13.3    +      -       -      +
    275B  GLU*     2.8    53.8    +      -       +      +
    326B  TYR*     3.8    34.5    -      -       +      +
    327B  ALA*     4.6     0.4    -      -       +      -
    501B  OHT      4.2     8.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 272 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268B  LEU      2.8    22.1    +      -       -      +
    269B  CYS      3.7     2.5    -      -       -      +
    271B  LEU*     1.3    71.6    -      -       -      +
    273B  ASP*     1.3    56.5    +      -       -      +
    275B  GLU*     3.0     4.7    +      -       -      +
    276B  LEU*     2.7    38.2    +      -       +      +
    305B  TRP*     5.6     0.2    -      -       +      -
    309B  LEU*     3.9    10.3    -      -       +      +
    501B  OHT      3.4    52.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 273 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269B  CYS*     3.0    31.7    +      -       -      +
    270B  ASP*     3.2     9.9    +      -       -      +
    272B  ALA*     1.3    78.3    -      -       -      +
    274B  ARG*     1.3    62.6    +      -       +      +
    276B  LEU*     3.6     8.6    -      -       -      +
    277B  VAL*     3.5    23.0    +      -       -      +
    501B  OHT      2.8    38.3    +      -       -      -
   1323H  ILE*     4.3    13.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 274 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249B  ILE*     3.4    28.2    -      -       +      +
    250B  TYR      3.0    29.1    +      -       -      +
    251B  ALA*     3.3    17.0    +      -       -      +
    252B  MET*     3.3    27.6    -      -       -      +
    270B  ASP*     3.0    38.5    +      -       -      +
    271B  LEU*     3.0    16.3    +      -       -      +
    273B  ASP*     1.3    74.6    -      -       +      +
    275B  GLU*     1.3    65.0    +      -       -      +
    277B  VAL*     3.4     9.8    +      -       -      +
    278B  VAL*     3.4    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 275 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249B  ILE*     4.3    17.8    -      -       +      +
    271B  LEU*     2.8    44.9    +      -       +      +
    272B  ALA      3.7     2.7    -      -       -      +
    274B  ARG*     1.3    72.3    -      -       -      +
    276B  LEU*     1.3    56.6    +      -       -      +
    278B  VAL*     3.1    12.0    +      -       +      +
    279B  ILE*     2.6    42.5    +      -       +      +
    309B  LEU*     3.6    22.0    -      -       +      +
    316B  ARG*     3.9    21.8    +      -       -      -
    326B  TYR      5.2     0.4    -      -       -      -
    501B  OHT      3.0    24.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 276 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272B  ALA      2.7    21.2    +      -       -      +
    273B  ASP*     3.6     8.5    -      -       -      +
    275B  GLU*     1.3    71.1    -      -       -      +
    277B  VAL*     1.3    57.7    +      -       -      +
    279B  ILE*     3.0    15.5    +      -       +      +
    280B  ILE*     2.8    52.4    +      -       +      +
    301B  LEU*     6.1     2.0    -      -       +      -
    305B  TRP*     4.1    34.8    -      -       +      -
    309B  LEU*     4.6     4.0    -      -       +      +
    501B  OHT      3.9    22.4    -      -       -      -
   1320H  LEU*     3.8    23.1    -      -       +      -
   1323H  ILE*     4.4    16.2    -      -       +      -
   1324H  ILE*     4.5    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 277 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273B  ASP      3.5    13.7    +      -       -      +
    274B  ARG*     3.4    11.3    +      -       -      +
    275B  GLU      3.2     0.6    -      -       -      -
    276B  LEU*     1.3    78.6    -      -       -      +
    278B  VAL*     1.3    67.6    +      -       +      +
    280B  ILE*     3.2    13.2    +      -       +      +
    281B  GLY*     3.1    18.0    +      -       -      -
   1323H  ILE*     4.6    15.7    -      -       +      -
   1327H  ALA*     5.1    11.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 278 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246B  PRO*     4.3    24.5    -      -       +      +
    249B  ILE*     3.5    33.9    -      -       +      -
    274B  ARG      3.4     6.0    +      -       -      +
    275B  GLU*     3.1    19.6    +      -       +      +
    277B  VAL*     1.3    79.1    -      -       +      +
    279B  ILE*     1.3    63.2    +      -       +      +
    281B  GLY*     3.9     2.0    -      -       -      +
    282B  TRP*     2.8    29.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 279 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246B  PRO*     5.8     0.9    -      -       +      -
    275B  GLU*     2.6    27.0    +      -       +      +
    276B  LEU*     3.4    13.0    -      -       +      +
    278B  VAL*     1.3    75.5    -      -       +      +
    280B  ILE*     1.3    58.0    +      -       +      +
    282B  TRP*     3.2    14.3    +      -       +      +
    283B  ALA*     3.0    24.9    +      -       -      +
    301B  LEU*     4.6    10.5    -      -       +      -
    305B  TRP*     4.6     5.8    -      -       +      +
    308B  ILE*     3.6    51.4    -      -       +      -
    309B  LEU*     3.5    36.3    -      -       +      +
    370B  LYS*     6.0     1.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 280 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276B  LEU*     2.8    47.6    +      -       +      +
    277B  VAL*     3.2     9.2    +      -       -      +
    279B  ILE*     1.3    71.4    -      -       -      +
    281B  GLY*     1.3    64.5    +      -       -      +
    282B  TRP      3.4     0.2    +      -       -      -
    283B  ALA*     3.4    10.9    +      -       -      +
    284B  LYS*     3.7    14.0    +      -       -      +
    301B  LEU*     4.3    23.5    -      -       +      +
   1323H  ILE*     4.3     8.1    -      -       +      -
   1324H  ILE*     3.8    20.4    -      -       +      +
   1327H  ALA*     3.5    35.9    -      -       +      -
   1328H  LEU*     3.9    28.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 281 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277B  VAL      3.1    13.3    +      -       -      -
    278B  VAL*     3.9     3.1    -      -       -      -
    279B  ILE      3.4     0.2    -      -       -      -
    280B  ILE*     1.3    74.1    -      -       -      +
    282B  TRP*     1.3    64.7    +      -       -      +
    284B  LYS*     3.3    27.8    +      -       -      +
    285B  HIS*     3.7    11.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with TRP 282 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241B  LEU*     4.9    10.6    +      -       +      +
    244B  ALA*     3.7    36.3    -      -       +      +
    245B  GLU*     4.7     2.8    +      -       -      +
    246B  PRO*     3.8    19.9    -      -       +      +
    278B  VAL      2.8    20.1    +      -       -      +
    279B  ILE*     3.4    25.1    -      -       +      +
    280B  ILE      3.2     0.4    -      -       -      -
    281B  GLY*     1.3    77.9    -      -       -      +
    283B  ALA*     1.3    69.8    +      -       +      +
    285B  HIS*     3.1    21.8    +      -       -      +
    286B  ILE*     3.4    32.4    +      -       +      -
    308B  ILE*     4.0    25.1    -      -       +      -
    367B  VAL*     4.3     6.5    -      -       -      +
    370B  LYS*     3.7    54.9    -      -       +      +
    371B  ALA*     4.1     5.6    -      -       +      -
    374B  LEU*     4.2     6.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 283 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279B  ILE      3.0    16.9    +      -       -      +
    280B  ILE      3.4     6.5    +      -       -      +
    281B  GLY      3.2     0.6    -      -       -      -
    282B  TRP*     1.3    84.9    -      -       +      +
    284B  LYS*     1.3    57.1    +      -       -      +
    286B  ILE*     2.8    31.9    +      -       -      +
    289B  PHE*     3.5    25.8    -      -       +      +
    301B  LEU*     4.4     7.2    -      -       +      -
    374B  LEU*     3.7    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 284 (chain B). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280B  ILE*     3.7    10.7    +      -       -      +
    281B  GLY*     3.3    19.2    +      -       -      +
    282B  TRP      3.1     0.8    -      -       -      -
    283B  ALA*     1.3    77.8    -      -       -      +
    285B  HIS*     1.3    64.6    +      -       +      +
    286B  ILE      3.4     6.8    +      -       -      +
    289B  PHE*     4.1     7.8    -      -       +      -
    290B  SER*     3.1    29.3    +      -       -      +
    297B  GLN*     5.2     2.5    -      -       -      +
   1327H  ALA      5.3     0.2    -      -       -      -
   1328H  LEU*     4.1    39.8    +      -       +      +
   1330H  GLY      3.6    22.2    +      -       -      -
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Residues in contact with HIS 285 (chain B). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240B  HIS*     2.9    45.7    +      -       -      +
    241B  LEU*     5.2     0.7    -      -       -      -
    243B  VAL*     6.2     1.6    -      -       +      +
    244B  ALA*     3.8    27.7    -      -       +      +
    281B  GLY      3.7    16.8    -      -       -      -
    282B  TRP*     3.1    12.6    +      -       -      +
    284B  LYS*     1.3    77.7    -      -       +      +
    286B  ILE*     1.3    64.9    +      -       +      +
    287B  PRO*     3.2     2.8    -      -       -      +
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Residues in contact with ILE 286 (chain B). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241B  LEU*     4.2    12.8    -      -       +      -
    282B  TRP*     3.4    47.6    -      -       +      +
    283B  ALA*     2.8    22.9    +      -       -      +
    284B  LYS      3.6     5.9    -      -       -      +
    285B  HIS*     1.3    75.9    -      -       -      +
    287B  PRO*     1.3    74.8    -      -       +      +
    288B  GLY      3.3     0.5    +      -       -      -
    289B  PHE*     3.2    22.1    +      -       +      +
    290B  SER      4.3     0.7    +      -       -      -
    371B  ALA*     4.1     9.9    -      -       +      +
    374B  LEU*     3.8    15.3    -      -       +      -
    391B  LEU*     3.9    25.6    -      -       +      -
    395B  LEU*     4.1    14.8    -      -       +      -
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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