Contacts of the helix formed by residues 246 - 268 (chain B) in PDB entry 4JYI


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 THR 246 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244B  GLY      4.1     0.2    +      -       -      -
    245B  LEU*     1.3    75.2    -      -       -      +
    247B  ILE*     1.3    65.2    +      -       -      +
    248B  ALA*     4.1     4.0    -      -       -      -
    249B  ASP*     2.9    34.2    +      -       -      +
    250B  GLN*     3.0    12.0    +      -       -      +
    336B  GLU*     3.1    27.1    +      -       +      +
    337B  GLU*     4.3    23.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 247 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245B  LEU      3.6     1.4    +      -       -      +
    246B  THR*     1.3    71.8    -      -       -      +
    248B  ALA*     1.3    63.2    +      -       -      +
    250B  GLN*     3.3    25.4    +      -       -      +
    251B  ILE*     3.0    32.6    +      -       +      +
    634F  HIS*     3.4    44.6    -      -       +      +
    637F  LEU*     4.3    26.2    -      -       +      +
    638F  GLN*     5.1     8.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 248 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246B  THR*     3.1     2.1    -      -       -      +
    247B  ILE*     1.3    80.5    -      -       -      +
    249B  ASP*     1.3    57.8    +      -       -      +
    251B  ILE*     3.5     8.1    +      -       -      +
    252B  THR*     2.9    32.5    +      -       -      +
    336B  GLU*     3.9    30.5    -      -       +      +
    634F  HIS*     5.7     0.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 249 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    245B  LEU*     4.2    17.1    -      -       +      +
    246B  THR*     2.9    20.8    +      -       -      +
    248B  ALA*     1.3    75.9    -      -       -      +
    250B  GLN*     1.3    61.6    +      -       -      +
    252B  THR*     3.2     1.9    +      -       -      -
    253B  LEU*     2.8    36.8    +      -       -      +
    334B  ASP      4.4     1.7    -      -       -      +
    335B  LEU*     3.7    20.5    -      -       +      +
    336B  GLU*     2.8    32.9    +      -       -      +
    337B  GLU*     3.0    34.4    +      -       -      +
    341B  VAL*     4.6     3.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 250 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242B  PHE*     3.3    53.3    +      -       +      +
    243B  THR*     3.5    19.2    +      -       -      +
    245B  LEU*     2.8    27.8    +      -       +      +
    246B  THR      3.0    11.6    +      -       -      +
    247B  ILE*     3.6    25.4    -      -       -      +
    249B  ASP*     1.3    75.7    -      -       -      +
    251B  ILE*     1.3    58.0    +      -       -      +
    253B  LEU*     3.5     0.6    +      -       -      -
    254B  LEU*     3.0    35.4    +      -       -      +
    637F  LEU*     3.4    33.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 251 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  ILE*     3.0    24.0    +      -       +      +
    248B  ALA*     3.7     7.0    -      -       -      +
    250B  GLN*     1.3    73.7    -      -       -      +
    252B  THR*     1.3    66.1    +      -       -      +
    254B  LEU*     3.8     4.7    -      -       -      +
    255B  LYS*     2.9    46.4    +      -       +      +
    630F  HIS*     3.7    35.9    -      -       +      -
    633F  LEU*     4.0    16.4    -      -       +      -
    634F  HIS*     3.9    26.5    -      -       +      +
    637F  LEU*     3.5    20.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 252 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248B  ALA      2.9    24.1    +      -       -      -
    249B  ASP*     3.2     5.8    +      -       -      -
    251B  ILE*     1.3    79.6    -      -       -      +
    253B  LEU*     1.3    61.3    +      -       -      +
    255B  LYS*     3.5     5.9    +      -       -      +
    256B  ALA*     3.1    23.0    +      -       +      +
    332B  ARG*     4.2     9.2    -      -       +      -
    333B  GLN      3.5    24.9    -      -       -      +
    334B  ASP*     4.2    12.1    +      -       +      +
    335B  LEU*     3.7    22.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 253 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    242B  PHE*     4.1    12.8    -      -       +      -
    245B  LEU*     3.7    29.8    -      -       +      -
    249B  ASP      2.8    18.8    +      -       -      +
    250B  GLN      3.9     3.6    -      -       -      +
    252B  THR*     1.3    76.2    -      -       -      +
    254B  LEU*     1.3    62.6    +      -       -      +
    256B  ALA*     3.3     4.8    +      -       -      +
    257B  ALA*     3.2    20.1    +      -       -      +
    327B  LEU*     3.4    35.6    -      -       +      +
    328B  ILE*     4.5     5.8    -      -       +      -
    329B  CYS      3.3    27.8    -      -       -      +
    332B  ARG*     3.6    11.8    +      -       +      -
    335B  LEU*     3.9    14.6    -      -       +      -
    341B  VAL*     4.2    13.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 254 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232B  ILE*     4.3    20.9    -      -       +      +
    233B  VAL*     4.2    20.6    -      -       +      -
    236B  ALA*     3.8    17.5    -      -       +      -
    242B  PHE*     4.1     9.0    -      -       +      -
    250B  GLN      3.0    22.3    +      -       -      +
    251B  ILE*     3.8     4.7    -      -       -      +
    253B  LEU*     1.3    76.4    -      -       -      +
    255B  LYS*     1.3    58.7    +      -       +      +
    258B  CYS*     2.8    36.1    +      -       +      +
    327B  LEU*     3.7    17.9    -      -       +      -
    406B  MET*     3.8    18.8    -      -       +      -
    633F  LEU*     4.6     4.3    -      -       +      -
    637F  LEU*     3.9    33.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 255 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251B  ILE*     2.9    41.0    +      -       +      +
    252B  THR*     3.9     5.2    -      -       -      +
    254B  LEU*     1.3    77.3    -      -       -      +
    256B  ALA*     1.3    61.6    +      -       -      +
    257B  ALA      3.5     0.2    +      -       -      -
    258B  CYS*     4.1     5.0    +      -       -      +
    259B  LEU      5.3     1.0    +      -       -      -
    405B  GLU      2.7    31.1    +      -       -      +
    406B  MET*     3.2    37.3    +      -       -      +
    407B  MET*     5.4     2.4    -      -       -      +
    408B  GLU*     2.8    38.3    +      -       -      +
    630F  HIS*     3.8    12.6    -      -       +      +
    633F  LEU*     4.2     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 256 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252B  THR*     3.1    19.6    +      -       +      +
    253B  LEU      3.7     3.1    -      -       -      +
    254B  LEU      3.2     0.4    -      -       -      -
    255B  LYS*     1.3    79.4    -      -       -      +
    257B  ALA*     1.3    57.5    +      -       -      +
    258B  CYS      3.7     0.4    -      -       -      -
    259B  LEU      5.4     0.3    +      -       -      -
    260B  ASP*     3.4     2.9    -      -       -      +
    332B  ARG*     3.6    36.1    -      -       +      +
    378B  ARG*     2.9    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 257 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253B  LEU      3.2    15.4    +      -       -      +
    254B  LEU      3.7     0.2    -      -       -      -
    256B  ALA*     1.3    77.2    -      -       -      +
    258B  CYS*     1.3    65.9    +      -       -      +
    259B  LEU      3.4     2.7    -      -       -      -
    260B  ASP*     3.2    10.6    +      -       -      +
    261B  ILE*     3.0    28.3    +      -       +      +
    326B  CYS*     3.8    20.2    -      -       -      +
    327B  LEU*     3.7    29.4    -      -       +      -
    332B  ARG*     3.9     4.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 258 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229B  ILE*     3.8    30.5    -      -       -      -
    232B  ILE*     4.1    12.6    -      -       +      +
    254B  LEU*     2.8    18.9    +      -       +      +
    255B  LYS      4.1     3.5    +      -       -      +
    256B  ALA      3.7     1.2    -      -       -      -
    257B  ALA*     1.3    76.8    -      -       -      +
    259B  LEU*     1.3    58.0    +      -       -      +
    261B  ILE*     3.2     9.5    +      -       -      +
    262B  LEU*     2.9    37.9    +      -       -      +
    327B  LEU*     6.4     0.2    -      -       -      -
    406B  MET*     3.8    33.9    -      -       +      -
    407B  MET*     4.2     9.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 259 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    255B  LYS      5.3     0.6    +      -       -      -
    256B  ALA      5.4     0.8    +      -       -      +
    257B  ALA      3.4     0.4    -      -       -      -
    258B  CYS*     1.3    76.8    -      -       -      +
    260B  ASP*     1.3    67.3    +      -       -      +
    262B  LEU*     3.2     9.5    +      -       +      -
    263B  ILE*     2.9    35.1    +      -       +      +
    381B  SER*     3.5    34.3    -      -       -      +
    384B  GLY*     3.6    11.2    -      -       -      +
    385B  ALA*     3.6    20.9    -      -       +      +
    388B  VAL*     4.7     1.1    -      -       +      -
    407B  MET*     4.1    22.1    -      -       +      +
    501B  JYI      4.0    46.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 260 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256B  ALA      3.4     8.3    -      -       -      +
    257B  ALA*     3.4     7.7    -      -       -      +
    259B  LEU*     1.3    79.2    +      -       -      +
    261B  ILE*     1.3    58.4    +      -       -      +
    263B  ILE*     3.5     6.5    +      -       -      +
    264B  LEU*     3.1    27.2    +      -       -      +
    326B  CYS*     3.6    22.3    -      -       -      -
    374B  ILE*     4.9     0.9    -      -       -      +
    377B  LEU*     3.5    25.5    -      -       +      +
    378B  ARG*     2.7    42.0    +      -       -      +
    381B  SER*     2.9    27.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 261 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232B  ILE*     3.7    37.2    -      -       +      -
    235B  PHE*     5.5     4.9    -      -       +      -
    257B  ALA*     3.0    21.3    +      -       +      +
    258B  CYS      3.7     3.6    -      -       -      +
    259B  LEU      3.2     0.2    -      -       -      -
    260B  ASP*     1.3    73.7    -      -       -      +
    262B  LEU*     1.3    61.2    +      -       -      +
    264B  LEU*     3.4     6.7    +      -       +      +
    265B  ARG*     2.8    47.6    +      -       +      +
    323B  SER*     4.0    41.5    -      -       -      +
    326B  CYS*     4.6     8.3    -      -       -      -
    327B  LEU*     4.1    20.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 262 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225B  ALA*     4.6     3.4    -      -       +      +
    228B  CYS*     3.7    34.1    -      -       +      -
    229B  ILE*     4.1    24.9    -      -       +      -
    232B  ILE*     3.7    11.2    -      -       +      -
    258B  CYS*     2.9    23.3    +      -       -      +
    259B  LEU*     3.5    14.1    -      -       +      +
    261B  ILE*     1.3    77.2    -      -       -      +
    263B  ILE*     1.3    62.2    +      -       -      +
    265B  ARG*     3.3     2.5    +      -       -      +
    266B  ILE*     3.0    21.5    +      -       -      +
    407B  MET*     5.0     2.9    -      -       +      -
    501B  JYI      3.5    62.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 263 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259B  LEU*     2.9    28.0    +      -       +      +
    260B  ASP*     3.6     5.2    -      -       -      +
    262B  LEU*     1.3    73.7    -      -       -      +
    264B  LEU*     1.3    67.4    +      -       -      +
    266B  ILE*     3.4     1.0    -      -       -      +
    267B  CYS*     3.0    39.1    +      -       -      -
    302B  VAL*     4.8     5.6    -      -       +      -
    305B  PHE*     4.4     4.5    -      -       +      -
    377B  LEU*     3.6    18.6    -      -       +      +
    380B  ILE*     3.7    33.7    -      -       +      -
    381B  SER*     3.7    27.1    -      -       -      +
    501B  JYI      3.8    31.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 264 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260B  ASP      3.1    15.1    +      -       -      +
    261B  ILE*     3.7     6.7    -      -       -      +
    263B  ILE*     1.3    79.2    -      -       -      +
    265B  ARG*     1.3    65.6    +      -       +      +
    267B  CYS*     3.3     3.2    +      -       -      +
    268B  THR*     3.1    39.7    +      -       +      +
    305B  PHE*     4.5     5.6    -      -       +      -
    309B  LEU*     4.1    17.0    -      -       +      -
    314B  MET*     5.5     3.6    -      -       +      -
    319B  THR*     4.1    20.0    -      -       +      +
    322B  LEU*     4.2    25.6    -      -       +      -
    323B  SER*     3.5    31.6    -      -       -      +
    326B  CYS*     6.5     0.2    -      -       +      -
    377B  LEU*     3.9    22.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 265 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188B  HIS*     4.3    13.8    +      -       +      -
    191B  THR*     3.0    43.0    +      -       -      -
    192B  PHE*     3.2    53.8    -      -       +      +
    228B  CYS*     3.8    17.6    -      -       -      -
    231B  LYS*     3.7    16.0    -      -       -      +
    232B  ILE*     3.9    12.5    -      -       -      +
    235B  PHE*     3.8    24.9    -      -       -      +
    261B  ILE*     2.8    35.8    +      -       +      +
    262B  LEU      3.7     4.3    -      -       -      +
    263B  ILE      3.3     0.2    -      -       -      -
    264B  LEU*     1.3    78.5    -      -       +      +
    266B  ILE*     1.3    62.3    +      -       -      +
    268B  THR*     2.5    26.0    +      -       -      -
    269B  ARG*     3.5     3.3    +      -       -      +
    319B  THR*     5.8     1.1    -      -       +      -
    323B  SER*     5.4     3.4    +      -       -      +
    501B  JYI      4.5     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 266 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262B  LEU      3.0    12.6    +      -       -      +
    263B  ILE*     3.4    10.3    -      -       -      +
    265B  ARG*     1.3    76.7    -      -       -      +
    267B  CYS*     1.3    70.1    +      -       -      +
    269B  ARG*     3.2    20.8    +      -       -      +
    270B  TYR      4.0     0.2    +      -       -      -
    277B  MET*     4.0    28.7    -      -       +      +
    278B  THR      3.7    25.4    -      -       -      +
    279B  PHE*     3.8    28.7    -      -       +      -
    290B  MET*     4.3     9.0    -      -       +      -
    295B  PHE*     4.3     8.3    -      -       +      -
    302B  VAL*     4.8     0.2    -      -       +      -
    501B  JYI      3.7    43.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 267 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263B  ILE*     3.0    26.7    +      -       -      +
    264B  LEU      3.8     3.8    -      -       -      +
    266B  ILE*     1.3    75.1    -      -       -      +
    268B  THR*     1.3    60.0    +      -       -      +
    269B  ARG      3.1     6.1    +      -       -      -
    270B  TYR*     3.4    18.1    +      -       -      +
    277B  MET*     4.3     4.0    -      -       -      -
    302B  VAL*     3.6    42.6    -      -       -      -
    305B  PHE*     3.7    17.0    -      -       +      -
    306B  ALA*     3.9    24.9    -      -       +      +
    309B  LEU*     4.0    15.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with THR 268 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188B  HIS*     5.7     0.2    +      -       -      -
    192B  PHE*     3.5    15.9    -      -       -      -
    195B  LEU*     4.7     8.3    -      -       -      +
    264B  LEU*     3.1    25.0    +      -       +      +
    265B  ARG*     2.5    20.8    +      -       -      -
    267B  CYS*     1.3    77.7    -      -       -      +
    269B  ARG*     1.3    57.7    +      -       -      +
    270B  TYR      3.4     4.0    +      -       -      +
    309B  LEU*     4.3     7.6    -      -       +      -
    314B  MET*     6.3     2.2    -      -       +      -
    319B  THR*     4.1    30.7    -      -       +      +
----------------------------------------------------------
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


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

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

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