Contacts of the helix formed by residues 282 - 303 (chain A) in PDB entry 3LRB


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 ALA 282 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  GLY      5.3     1.2    -      -       -      +
     29A  PHE*     4.4    16.8    -      -       +      -
    111A  TYR*     3.2    33.8    -      -       +      -
    158A  ALA*     5.3     0.4    -      -       -      -
    278A  VAL      3.2    16.0    +      -       -      +
    279A  SER*     4.3     5.2    -      -       -      +
    280A  PHE      2.5     5.7    +      -       -      -
    281A  CYS*     1.3    71.7    -      -       -      +
    283A  ALA*     1.3    58.6    +      -       -      +
    284A  ALA      2.8     4.0    -      -       -      -
    285A  GLY*     2.9    20.8    +      -       -      -
    286A  CYS*     3.7     9.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 283 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    108A  GLY      3.1    28.3    -      -       -      +
    111A  TYR*     3.7    14.3    -      -       +      +
    112A  LEU*     4.1    21.1    -      -       +      -
    280A  PHE*     2.9     7.5    +      -       +      +
    282A  ALA*     1.3    78.6    -      -       -      +
    284A  ALA*     1.3    56.2    +      -       -      +
    285A  GLY      3.3     0.2    -      -       -      -
    286A  CYS*     3.3    10.6    +      -       -      +
    287A  LEU*     3.0    25.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 284 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154A  ALA*     3.0    41.2    -      -       -      +
    157A  LEU*     4.2    15.3    -      -       +      -
    280A  PHE*     2.8    28.6    +      -       +      +
    281A  CYS*     3.5    19.5    -      -       -      +
    282A  ALA      2.8     0.4    -      -       -      -
    283A  ALA*     1.3    77.6    -      -       -      +
    285A  GLY*     1.3    62.1    +      -       -      +
    287A  LEU*     3.3    13.1    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 285 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  GLY      4.4     2.4    -      -       -      +
     25A  GLY*     4.7    12.1    -      -       -      +
    154A  ALA      4.7     1.3    -      -       -      -
    155A  THR*     4.3    11.8    -      -       -      +
    158A  ALA*     3.9    15.9    -      -       -      +
    281A  CYS      3.8     2.8    +      -       -      -
    282A  ALA      2.9    10.6    +      -       -      -
    284A  ALA*     1.3    78.4    -      -       -      +
    286A  CYS*     1.3    60.9    +      -       -      +
    288A  GLY*     3.8     1.0    +      -       -      -
    289A  SER*     3.0    25.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 286 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     25A  GLY      4.6     1.8    -      -       -      -
     26A  SER*     4.4    15.0    -      -       -      -
    104A  MET*     3.0    39.5    -      -       +      -
    105A  VAL*     6.1     0.7    -      -       +      -
    107A  ILE*     5.0     3.8    -      -       -      -
    108A  GLY*     4.3    17.5    -      -       -      -
    111A  TYR*     5.3     3.8    -      -       -      -
    136A  PHE*     4.4     2.8    -      -       -      -
    282A  ALA      3.9    13.0    -      -       -      -
    283A  ALA*     3.3     7.3    +      -       -      +
    284A  ALA      3.2     0.6    -      -       -      -
    285A  GLY*     1.3    78.3    -      -       -      +
    287A  LEU*     1.3    62.2    +      -       -      +
    288A  GLY      3.4     0.2    -      -       -      -
    289A  SER*     3.7     8.3    -      -       -      -
    290A  LEU*     3.5    23.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 287 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  PHE*     2.6    47.6    -      -       +      -
    139A  LEU*     6.0     0.2    -      -       +      -
    150A  VAL*     3.5    28.0    -      -       +      +
    154A  ALA*     3.8    12.1    -      -       +      -
    157A  LEU*     6.0     4.0    -      -       +      -
    280A  PHE*     6.2     4.5    -      -       +      -
    283A  ALA      3.0    11.6    +      -       -      +
    284A  ALA*     3.3    17.8    +      -       +      +
    286A  CYS*     1.3    78.1    -      -       -      +
    288A  GLY*     1.3    59.4    +      -       -      +
    291A  GLY      4.3     0.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 288 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147A  ILE*     5.1     0.3    -      -       -      +
    150A  VAL*     4.8     1.1    -      -       -      -
    151A  GLN*     2.4    57.7    -      -       -      +
    154A  ALA*     3.4    14.2    -      -       -      +
    155A  THR*     4.4     0.7    -      -       -      -
    284A  ALA      3.6     1.8    +      -       -      -
    285A  GLY      3.8     1.3    +      -       -      -
    287A  LEU*     1.3    79.7    -      -       -      +
    289A  SER*     1.3    63.1    +      -       -      +
    291A  GLY*     3.2     4.9    +      -       -      -
    292A  GLY      3.2     4.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 289 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21A  GLY      4.1    11.9    -      -       -      -
     22A  ASN*     4.4     5.8    +      -       -      +
     26A  SER*     5.2     6.2    -      -       -      -
    104A  MET*     3.5    19.7    -      -       -      +
    151A  GLN*     3.4     8.7    -      -       -      +
    285A  GLY      3.0    20.6    +      -       -      -
    286A  CYS*     3.7    10.1    -      -       -      -
    287A  LEU      3.5     0.2    -      -       -      -
    288A  GLY*     1.3    72.9    -      -       -      +
    290A  LEU*     1.3    57.3    +      -       -      +
    291A  GLY      2.6    14.2    +      -       -      -
    292A  GLY*     2.6    17.5    +      -       -      -
    293A  TRP*     3.0    24.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    101A  ASN*     3.1    42.7    +      -       +      +
    104A  MET*     3.8    22.4    -      -       +      -
    105A  VAL*     3.2    36.3    -      -       +      -
    133A  LEU*     3.6    19.5    -      -       +      -
    136A  PHE*     4.0    23.8    -      -       +      -
    286A  CYS*     3.5    16.9    +      -       +      +
    288A  GLY      3.5     0.6    -      -       -      -
    289A  SER*     1.3    78.7    +      -       -      +
    291A  GLY*     1.3    52.9    -      -       -      +
    293A  TRP*     3.9     3.4    -      -       +      +
    294A  THR*     2.7    40.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    136A  PHE*     4.1    12.0    -      -       -      -
    140A  ASN*     3.3     9.6    +      -       -      -
    147A  ILE*     3.5    34.1    -      -       -      -
    288A  GLY      3.2     4.5    +      -       -      -
    289A  SER      2.6     5.9    +      -       -      -
    290A  LEU*     1.3    73.5    -      -       -      +
    292A  GLY*     1.3    64.2    +      -       -      -
    294A  THR*     3.1     5.7    +      -       -      -
    295A  LEU*     2.9    19.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  MET*     3.7    24.0    -      -       -      -
     22A  ASN*     4.1     7.4    -      -       -      -
    147A  ILE*     4.3     1.2    -      -       -      +
    151A  GLN*     3.0    23.2    +      -       -      -
    288A  GLY      3.2     0.2    +      -       -      -
    289A  SER      2.6    10.8    +      -       -      -
    291A  GLY*     1.3    70.3    -      -       -      -
    293A  TRP*     1.3    56.3    +      -       -      -
    295A  LEU*     3.0    23.8    +      -       -      +
    296A  LEU*     3.1    12.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22A  ASN*     2.9    43.9    +      -       +      +
     93A  TYR*     4.2     9.9    -      +       -      -
     96A  ALA      4.1     7.0    -      -       -      -
     97A  CYS*     3.3    59.2    -      -       +      +
    100A  GLY*     6.4     0.2    -      -       -      -
    101A  ASN*     3.8    18.2    -      -       -      +
    104A  MET*     6.3     1.3    -      -       +      -
    205A  ILE*     4.4    16.2    -      -       +      -
    206A  GLY*     4.4    15.7    -      -       -      -
    208A  GLU*     3.6    21.1    -      -       -      -
    289A  SER*     3.0    22.7    +      -       -      +
    290A  LEU*     4.0     7.0    -      -       +      +
    292A  GLY*     1.3    73.6    -      -       -      +
    294A  THR*     1.3    66.0    +      -       -      +
    296A  LEU*     3.2    16.9    +      -       +      +
    297A  ALA      3.2    14.7    +      -       -      -
    361A  THR*     5.1     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     97A  CYS      6.0     0.9    -      -       -      -
     98A  TRP*     6.5     0.7    -      -       -      +
    101A  ASN*     3.0    22.0    -      -       -      +
    133A  LEU      5.9     0.4    -      -       -      +
    136A  PHE*     4.5    10.2    +      -       +      -
    137A  VAL*     5.0     6.9    +      -       +      +
    140A  ASN*     3.1    23.7    +      -       -      +
    290A  LEU*     2.7    25.3    +      -       +      +
    291A  GLY*     3.1     2.0    +      -       -      -
    293A  TRP*     1.3    75.8    -      -       -      +
    295A  LEU*     1.3    66.0    +      -       -      +
    297A  ALA*     2.9    19.3    +      -       -      +
    298A  GLY*     3.0    10.9    +      -       -      -
    327A  LEU*     4.7    11.0    -      -       -      +
    330A  VAL*     5.2    10.2    -      -       +      +
    334A  MET*     4.7    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  MET*     3.5    32.5    -      -       +      -
    140A  ASN*     3.5    23.6    -      -       -      +
    144A  PRO*     4.4    20.0    -      -       +      -
    147A  ILE*     4.0     7.9    -      -       +      -
    148A  THR*     4.9     4.0    -      -       +      -
    213A  ALA*     5.6     6.1    -      -       +      -
    216A  VAL*     5.1     7.9    -      -       +      -
    291A  GLY      2.9     9.3    +      -       -      +
    292A  GLY*     3.0    13.2    -      -       -      +
    294A  THR*     1.3    82.9    +      -       -      +
    296A  LEU*     1.3    58.8    +      -       +      +
    298A  GLY*     3.3     2.5    +      -       -      -
    299A  GLN*     3.1    43.6    +      -       +      +
    327A  LEU*     5.4     3.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18A  MET*     4.1    17.3    -      -       -      -
     22A  ASN*     4.0     8.3    -      -       -      +
     93A  TYR*     4.1    14.6    -      -       -      +
     97A  CYS*     4.8     6.7    -      -       -      -
    208A  GLU*     5.3     0.7    -      -       +      -
    209A  SER*     3.1    44.0    -      -       -      +
    212A  VAL*     3.6    23.6    -      -       +      +
    213A  ALA*     4.9     6.1    -      -       +      +
    292A  GLY      3.3    17.0    -      -       -      +
    293A  TRP*     3.7    16.2    -      -       +      +
    294A  THR      3.1     0.8    -      -       -      -
    295A  LEU*     1.3    82.1    -      -       +      +
    297A  ALA*     1.3    55.5    +      -       -      +
    298A  GLY      3.1     5.2    -      -       -      -
    299A  GLN*     4.3     2.5    -      -       +      +
    300A  THR*     2.8    33.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  TRP*     2.9    41.6    -      -       +      +
     97A  CYS*     3.6    27.1    -      -       +      +
     98A  TRP*     4.2    10.3    -      -       +      +
    293A  TRP      3.2     6.7    +      -       -      +
    294A  THR*     2.9    12.1    +      -       -      +
    296A  LEU*     1.3    73.9    -      -       -      +
    298A  GLY*     1.3    61.1    +      -       -      +
    300A  THR*     4.5     1.3    -      -       -      -
    301A  ALA*     3.7     1.6    -      -       -      +
    302A  LYS*     2.9    10.8    +      -       -      -
    330A  VAL*     4.8    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    294A  THR      3.0    11.0    +      -       -      -
    295A  LEU      3.3     4.0    +      -       -      -
    296A  LEU      3.1     0.2    -      -       -      -
    297A  ALA*     1.3    79.5    -      -       -      +
    299A  GLN*     1.3    59.1    +      -       -      +
    302A  LYS*     2.9    50.6    +      -       -      +
    323A  PRO*     4.6    11.4    -      -       -      -
    327A  LEU*     4.7    10.1    -      -       -      -
    330A  VAL*     5.4     1.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  GLY*     4.8     2.5    -      -       -      +
    144A  PRO*     5.3     1.0    -      -       -      +
    212A  VAL      3.8    20.4    -      -       -      +
    213A  ALA*     4.2    14.5    +      -       -      +
    215A  GLY*     5.1     1.8    -      -       -      -
    216A  VAL*     2.7    39.0    -      -       -      +
    295A  LEU*     3.1    28.4    +      -       +      +
    296A  LEU*     3.8     5.2    -      -       +      +
    298A  GLY*     1.3    73.4    -      -       -      +
    300A  THR*     1.3    53.3    +      -       -      +
    301A  ALA      2.5    19.2    +      -       -      -
    302A  LYS*     5.4     2.4    -      -       -      +
    303A  ALA*     2.8    31.3    +      -       -      +
    323A  PRO*     5.8     4.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     71A  GLY*     2.8    25.1    +      -       -      -
     72A  GLY      4.3    13.7    -      -       -      +
     73A  SER*     5.7     0.4    -      -       -      -
     74A  TYR*     4.6    10.5    -      -       +      -
     90A  ASN*     2.1    37.2    -      -       -      +
     93A  TYR*     3.1    37.2    -      -       +      -
     94A  TRP*     3.8     7.8    -      -       -      +
    212A  VAL*     3.0    15.1    -      -       -      +
    296A  LEU      2.8    17.2    +      -       -      -
    297A  ALA*     4.8     1.3    -      -       -      -
    299A  GLN*     1.3    65.8    -      -       -      +
    301A  ALA*     1.3    55.5    +      -       -      +
    303A  ALA*     4.6     5.6    -      -       -      -
    304A  ALA      5.2     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     90A  ASN*     3.5     6.7    -      -       -      -
     94A  TRP*     3.5    24.0    -      -       +      -
    297A  ALA      3.7     1.6    -      -       -      +
    299A  GLN      2.5     7.7    +      -       -      -
    300A  THR*     1.3    76.6    -      -       -      +
    302A  LYS*     1.3    66.3    +      -       +      +
    303A  ALA*     2.7     5.9    +      -       -      +
    304A  ALA      3.1     3.1    +      -       -      +
    305A  ALA*     2.7    35.2    +      -       -      +
    310A  PHE*     3.2    29.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94A  TRP*     3.1    18.8    -      -       -      +
    297A  ALA      2.9    19.6    +      -       -      -
    298A  GLY*     2.9    29.7    +      -       -      +
    299A  GLN*     4.4     3.8    -      -       -      +
    301A  ALA*     1.3    75.7    -      -       -      +
    303A  ALA*     1.3    62.6    +      -       -      +
    305A  ALA*     3.5     7.0    -      -       -      +
    306A  ASP*     3.3    14.4    +      -       -      +
    314A  PHE*     3.0    63.4    -      -       +      +
    315A  ALA*     4.1     4.6    +      -       -      +
    317A  VAL*     6.1     1.3    -      -       +      -
    323A  PRO*     3.6    24.5    -      -       +      -
    326A  GLY*     3.4    16.2    -      -       -      -
    330A  VAL*     4.1     7.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     70A  PRO*     3.5    32.1    -      -       +      +
     71A  GLY*     4.6     3.4    -      -       -      -
     74A  TYR*     5.0     3.4    -      -       +      -
    299A  GLN*     2.8    23.9    +      -       -      +
    300A  THR*     4.6     1.1    -      -       -      -
    301A  ALA      2.7     2.2    -      -       -      +
    302A  LYS*     1.3    74.2    -      -       -      +
    304A  ALA*     1.3    53.1    -      -       -      +
    305A  ALA      2.5     2.6    +      -       -      -
    306A  ASP*     2.3    45.6    +      -       -      +
    307A  ASP*     3.5     7.2    +      -       -      +
----------------------------------------------------------
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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