Contacts of the helix formed by residues 290 - 314 (chain B) in PDB entry 1U3Q


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 290 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288B  PRO      4.4     6.7    -      -       -      +
    289B  PHE*     1.3    77.5    -      -       -      +
    291B  GLU*     1.3    69.7    +      -       -      +
    292B  ALA*     3.6     7.9    +      -       -      +
    293B  SER*     2.6    39.1    +      -       -      +
    294B  MET*     3.0     7.1    +      -       -      +
    369B  CYS*     4.3     2.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 291 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290B  THR*     1.3    70.6    -      -       -      +
    292B  ALA*     1.3    61.8    +      -       -      +
    294B  MET      3.5     0.3    +      -       -      -
    295B  MET*     3.2    31.7    +      -       +      +
    369B  CYS*     3.1    25.4    +      -       -      +
    370B  VAL*     3.7    18.1    -      -       +      +
    371B  GLU*     2.9    39.4    +      -       -      +
    479B  MET*     5.1     7.1    -      -       -      +
    484B  VAL*     4.9    18.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 292 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    290B  THR*     2.8    10.4    +      -       -      +
    291B  GLU*     1.3    77.6    -      -       -      +
    293B  SER*     1.3    56.5    +      -       -      +
    295B  MET*     4.2     3.9    -      -       -      +
    296B  MET*     3.1    28.6    +      -       -      +
    484B  VAL*     5.7    17.0    -      -       +      +
    485B  VAL*     5.1     4.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 293 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285B  PRO*     4.6     9.4    -      -       -      +
    288B  PRO      4.2     2.5    +      -       -      -
    289B  PHE*     3.4    14.9    -      -       -      -
    290B  THR*     2.6    49.0    +      -       -      +
    292B  ALA*     1.3    71.4    -      -       -      +
    294B  MET*     1.3    58.3    +      -       -      -
    296B  MET*     3.4    23.0    -      -       -      +
    297B  SER*     3.0    29.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 294 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    289B  PHE*     3.5    35.0    -      -       +      -
    290B  THR      3.0    10.0    +      -       -      +
    293B  SER*     1.3    75.3    +      -       -      +
    295B  MET*     1.3    61.9    +      -       -      +
    296B  MET      3.0     1.3    -      -       -      -
    297B  SER*     3.0     3.5    +      -       -      -
    298B  LEU*     2.8    41.9    +      -       +      +
    362B  LEU*     3.7    24.0    -      -       +      -
    366B  GLU*     3.9    22.4    -      -       -      +
    369B  CYS*     4.5     0.9    -      -       +      -
    370B  VAL*     3.3    34.5    -      -       +      +
    373B  ILE*     3.6    28.3    -      -       +      -
    377B  PHE*     4.0    10.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 295 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291B  GLU*     3.2    18.6    +      -       +      +
    292B  ALA*     4.2     2.5    -      -       -      +
    294B  MET*     1.3    79.3    -      -       +      +
    296B  MET*     1.3    57.6    +      -       -      +
    298B  LEU*     3.8    13.4    -      -       +      +
    299B  THR*     2.9    36.2    +      -       -      +
    370B  VAL*     3.4    28.3    -      -       +      -
    373B  ILE*     3.1    33.4    -      -       +      -
    476B  LEU*     5.1     2.5    -      -       -      -
    479B  MET*     3.9    24.0    -      -       +      -
    484B  VAL*     5.8     3.1    -      -       +      -
    485B  VAL*     3.6    30.5    -      -       +      -
    501B  272      3.7    20.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with MET 296 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285B  PRO*     4.9     9.4    -      -       +      -
    292B  ALA      3.1    21.8    +      -       -      +
    293B  SER*     3.4    28.9    -      -       -      +
    295B  MET*     1.3    77.9    -      -       -      +
    297B  SER*     1.3    63.8    +      -       -      +
    299B  THR*     2.7    19.7    +      -       -      -
    300B  LYS*     3.0    26.1    +      -       -      +
    485B  VAL*     4.0     8.3    -      -       +      +
    488B  TYR*     4.0    12.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 297 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282B  ILE*     3.5    21.5    -      -       -      +
    283B  SER      4.4     4.3    +      -       -      -
    285B  PRO*     4.0    13.7    -      -       -      +
    289B  PHE*     3.8    21.4    -      -       -      -
    293B  SER      3.0    15.8    +      -       -      -
    294B  MET*     3.0     6.9    +      -       -      -
    296B  MET*     1.3    83.2    -      -       -      +
    298B  LEU*     1.3    59.7    +      -       -      +
    300B  LYS*     3.3     2.3    +      -       -      -
    301B  LEU*     2.9    30.5    +      -       -      +
    360B  LEU*     4.6     9.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 298 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294B  MET*     2.8    30.2    +      -       +      +
    295B  MET*     3.9    13.5    -      -       +      +
    297B  SER*     1.3    75.0    -      -       -      +
    299B  THR*     1.3    57.3    +      -       -      +
    301B  LEU*     3.7     6.7    +      -       +      +
    302B  ALA*     3.2    25.8    +      -       -      +
    356B  PHE*     3.5    43.3    -      -       +      -
    360B  LEU*     5.0     4.7    -      -       +      -
    362B  LEU*     4.7     4.7    -      -       +      -
    373B  ILE*     3.9    28.5    -      -       +      -
    377B  PHE*     4.5    11.2    -      -       +      -
    501B  272      3.9    32.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 299 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295B  MET*     2.9    22.6    +      -       -      +
    296B  MET*     2.7    24.9    +      -       -      -
    298B  LEU*     1.3    75.9    -      -       +      +
    300B  LYS*     1.3    66.1    +      -       -      +
    302B  ALA      3.5     0.2    +      -       -      -
    303B  ASP*     3.0    23.9    +      -       -      +
    476B  LEU*     4.1    20.0    -      -       +      -
    485B  VAL*     3.5    23.4    -      -       +      +
    487B  VAL*     4.9     6.3    -      -       +      -
    488B  TYR*     3.3    19.3    -      -       -      -
    491B  LEU*     3.7    28.3    -      -       +      +
    501B  272      5.9     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 300 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    282B  ILE*     4.3    21.8    -      -       +      +
    296B  MET*     3.0    23.0    +      -       -      +
    297B  SER*     3.6     5.2    -      -       -      +
    299B  THR*     1.3    82.8    +      -       -      +
    301B  LEU*     1.3    62.4    +      -       -      +
    303B  ASP*     3.3     4.1    +      -       +      +
    304B  LYS*     3.1    46.0    +      -       +      +
    488B  TYR*     3.5    24.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 301 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280B  VAL*     3.6    29.4    -      -       +      -
    282B  ILE*     4.0    15.2    -      -       +      +
    297B  SER      2.9    17.1    +      -       -      +
    298B  LEU*     3.9     7.0    -      -       +      +
    299B  THR      3.2     0.2    -      -       -      -
    300B  LYS*     1.3    77.7    -      -       -      +
    302B  ALA*     1.3    61.6    +      -       -      +
    304B  LYS*     3.2     6.7    +      -       -      +
    305B  GLU*     3.1    52.0    +      -       -      +
    356B  PHE*     3.4    44.9    -      -       +      +
    357B  ALA*     4.2     4.5    -      -       +      -
    360B  LEU*     3.9    12.1    -      -       +      -
    501B  272      4.2     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 302 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298B  LEU      3.2    15.3    +      -       -      +
    299B  THR*     3.9     4.5    -      -       -      +
    300B  LYS      3.4     0.2    -      -       -      -
    301B  LEU*     1.3    79.0    -      -       -      +
    303B  ASP*     1.3    53.7    +      -       -      +
    305B  GLU*     3.2     8.8    +      -       -      +
    306B  LEU*     2.7    41.4    +      -       -      +
    335B  TRP*     5.0     1.1    -      -       +      -
    336B  MET*     6.1     0.7    -      -       +      -
    339B  LEU*     4.0    19.3    -      -       +      -
    476B  LEU*     5.9     1.1    -      -       +      -
    491B  LEU*     4.1    21.8    -      -       +      -
    501B  272      4.1    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 303 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299B  THR      3.0    18.4    +      -       -      +
    300B  LYS*     3.5     5.4    -      -       +      +
    301B  LEU      3.2     0.2    -      -       -      -
    302B  ALA*     1.3    79.1    -      -       -      +
    304B  LYS*     1.3    61.1    +      -       +      +
    306B  LEU*     4.5     1.8    -      -       -      -
    307B  VAL*     3.2     8.7    +      -       -      +
    488B  TYR*     3.5    25.1    -      -       +      +
    489B  ASP*     3.2    16.3    -      -       -      +
    490B  LEU*     2.8    55.6    -      -       -      +
    491B  LEU*     3.2    17.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 304 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280B  VAL*     3.3    34.1    -      -       +      +
    281B  LEU*     3.9    22.2    +      -       -      +
    282B  ILE*     4.2     5.6    -      -       +      +
    300B  LYS*     3.1    37.7    +      -       +      +
    301B  LEU*     3.2     7.4    +      -       -      +
    303B  ASP*     1.3    78.8    -      -       +      +
    305B  GLU*     1.3    62.5    +      -       -      +
    307B  VAL*     3.5     9.1    -      -       -      +
    308B  HIS*     3.4    31.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 305 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280B  VAL*     3.7    20.0    -      -       +      +
    301B  LEU*     3.1    37.3    +      -       -      +
    302B  ALA      3.7     2.0    -      -       -      +
    304B  LYS*     1.3    74.7    -      -       -      +
    306B  LEU*     1.3    57.0    +      -       -      +
    307B  VAL      2.9     2.2    +      -       -      -
    308B  HIS*     3.1     8.6    +      -       +      +
    309B  MET*     2.7    37.2    +      -       -      +
    339B  LEU*     3.4    24.6    -      -       +      +
    346B  ARG*     4.0    18.1    +      -       -      -
    356B  PHE      5.0     0.7    -      -       -      -
    501B  272      2.5    32.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 306 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    325A  PHE*     5.2     1.5    -      -       +      -
    302B  ALA      2.7    27.6    +      -       -      +
    303B  ASP      3.6     0.2    +      -       -      -
    304B  LYS      3.5     0.2    -      -       -      -
    305B  GLU*     1.3    72.7    -      -       -      +
    307B  VAL*     1.3    61.0    +      -       -      +
    309B  MET*     3.7    13.4    +      -       +      +
    310B  ILE*     3.3    26.2    +      -       -      +
    335B  TRP*     3.4    37.5    -      -       +      -
    339B  LEU*     4.1     9.4    -      -       +      -
    490B  LEU*     3.3    17.7    -      -       +      -
    491B  LEU*     3.5    38.8    -      -       +      +
    494B  MET*     3.4    34.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 307 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303B  ASP*     3.2    18.8    -      -       -      +
    304B  LYS*     3.5    11.7    -      -       -      +
    305B  GLU      2.9     0.4    -      -       -      -
    306B  LEU*     1.3    76.0    -      -       -      +
    308B  HIS*     1.3    75.6    +      -       +      +
    310B  ILE*     3.1    26.5    +      -       +      +
    311B  SER*     3.6     9.3    +      -       -      +
    490B  LEU*     3.3    21.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with HIS 308 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277B  PRO*     4.0    18.9    -      -       +      +
    278B  PRO*     3.4    46.6    +      -       +      +
    279B  HIS      5.2     2.2    +      -       -      -
    280B  VAL*     4.2    16.7    -      -       +      +
    304B  LYS*     3.4    20.1    +      -       -      +
    305B  GLU*     3.1     8.1    +      -       +      +
    307B  VAL*     1.3    87.0    -      -       +      +
    309B  MET*     1.3    58.1    +      -       -      +
    311B  SER*     3.1    12.3    +      -       -      -
    312B  TRP*     2.9    28.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 309 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277B  PRO*     5.3     1.5    -      -       -      +
    305B  GLU      2.7    18.7    +      -       -      +
    306B  LEU*     3.7    16.4    -      -       +      +
    307B  VAL      3.1     0.2    -      -       -      -
    308B  HIS*     1.3    71.8    -      -       -      +
    310B  ILE*     1.3    57.8    +      -       -      +
    312B  TRP*     3.3    26.0    -      -       +      -
    313B  ALA*     2.9    25.5    +      -       -      +
    331B  LEU*     4.1    18.1    -      -       +      +
    334B  CYS*     6.0     0.4    -      -       -      -
    335B  TRP*     3.2    46.0    -      -       -      +
    338B  VAL*     3.8    22.0    -      -       +      -
    339B  LEU*     3.7    26.0    -      -       +      -
    494B  MET*     5.3     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 310 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323A  SER*     5.5     7.4    -      -       -      -
    324A  LEU*     4.7    23.8    -      -       +      +
    325A  PHE*     3.4    39.0    -      -       +      -
    306B  LEU      3.3    18.4    -      -       -      +
    307B  VAL*     3.1    12.7    +      -       +      +
    309B  MET*     1.3    73.9    -      -       +      +
    311B  SER*     1.3    64.0    +      -       -      +
    312B  TRP      3.1     1.6    -      -       -      -
    313B  ALA*     3.3     5.1    +      -       -      +
    314B  LYS*     2.9    49.6    +      -       +      +
    331B  LEU*     4.8     7.2    -      -       +      -
    490B  LEU*     5.7     3.8    -      -       +      -
    494B  MET*     6.2     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 311 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307B  VAL*     3.6    11.7    +      -       -      +
    308B  HIS*     3.1    13.7    +      -       -      -
    310B  ILE*     1.3    79.5    -      -       -      +
    312B  TRP*     1.3    60.5    +      -       -      +
    314B  LYS*     3.7    10.3    +      -       -      +
    315B  LYS*     3.2    43.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 312 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    272B  LEU*     5.1     7.5    +      -       -      +
    275B  ALA*     3.6    36.2    -      -       +      +
    276B  GLU*     4.1     9.0    +      -       -      -
    277B  PRO*     4.1    19.3    -      -       +      -
    308B  HIS      2.9    12.9    +      -       -      +
    309B  MET*     3.3    40.2    -      -       +      +
    311B  SER*     1.3    76.8    -      -       -      +
    313B  ALA*     1.3    71.5    +      -       +      +
    315B  LYS*     3.0    16.5    +      -       -      +
    316B  ILE*     3.5    33.9    -      -       +      +
    338B  VAL*     4.2    18.4    -      -       +      -
    398B  LEU*     5.5     1.9    +      -       -      +
    401B  LYS*     3.9    44.2    -      -       +      +
    402B  ALA*     4.1     6.1    -      -       +      -
    405B  LEU*     4.2    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 313 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309B  MET      2.9    17.8    +      -       -      +
    310B  ILE*     3.3     5.6    +      -       -      +
    312B  TRP*     1.3    82.7    -      -       +      +
    314B  LYS*     1.3    62.8    +      -       -      +
    316B  ILE*     3.1    21.0    +      -       -      +
    319B  PHE*     3.1    45.6    -      -       +      +
    331B  LEU*     4.2    15.5    -      -       +      -
    405B  LEU*     4.2     9.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 314 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324A  LEU*     5.7     6.0    -      -       +      +
    310B  ILE*     2.9    36.8    +      -       +      +
    311B  SER*     4.0     9.4    -      -       -      +
    312B  TRP      3.2     0.2    -      -       -      -
    313B  ALA*     1.3    78.3    -      -       -      +
    315B  LYS*     1.3    57.8    +      -       +      +
    316B  ILE      3.3     4.5    +      -       -      +
    319B  PHE*     3.9    16.2    -      -       +      -
    320B  VAL*     3.7    33.3    -      -       +      +
    327B  GLN*     4.9     6.7    -      -       -      +
----------------------------------------------------------
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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