Contacts of the helix formed by residues 283 - 307 (chain A) in PDB entry 2OT3


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 VAL 283 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209A  ASP      5.6     0.4    -      -       -      +
    212A  GLU*     3.3    22.9    -      -       +      +
    213A  LYS*     4.1    35.4    -      -       +      +
    216A  MET*     4.6     1.1    -      -       +      -
    217A  THR*     3.6    29.2    -      -       -      +
    281A  LYS      3.6     0.2    -      -       -      -
    282A  ARG*     1.3    82.6    -      -       +      +
    284A  PRO*     1.4    72.3    -      -       +      +
    285A  ARG*     3.9    11.4    -      -       +      +
    286A  ASP*     2.9    32.7    +      -       -      +
    287A  LYS*     3.0    13.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 284 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212A  GLU*     3.7    13.9    -      -       -      +
    216A  MET*     3.7    22.0    -      -       +      -
    282A  ARG      3.9     0.4    -      -       -      -
    283A  VAL*     1.4    80.7    -      -       +      +
    285A  ARG*     1.3    55.9    +      -       -      +
    287A  LYS*     3.1    11.0    +      -       +      +
    288A  LEU*     2.8    35.6    +      -       -      +
    337A  TYR*     3.7    25.4    -      -       +      +
    338A  ILE*     4.6     7.8    -      -       +      +
    341A  PHE      3.9    21.3    -      -       -      +
    342A  CYS*     3.7    28.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 285 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209A  ASP*     2.9    52.0    +      -       -      +
    212A  GLU*     3.1    23.6    +      -       -      +
    283A  VAL*     3.2     6.7    -      -       +      -
    284A  PRO*     1.3    75.1    -      -       -      +
    286A  ASP*     1.3    64.2    +      -       -      +
    288A  LEU*     3.6    13.1    +      -       -      +
    289A  ALA*     3.1    24.5    +      -       +      +
    346A  ARG*     2.6    58.8    -      -       -      +
    352A  ASP*     4.8     1.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 286 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213A  LYS*     6.0     2.1    -      -       -      +
    281A  LYS*     3.7    25.7    -      -       +      +
    282A  ARG      5.5     0.3    +      -       -      -
    283A  VAL*     2.9    29.7    +      -       -      +
    285A  ARG*     1.3    83.2    -      -       -      +
    287A  LYS*     1.3    66.2    +      -       -      +
    289A  ALA*     3.3     9.5    +      -       -      +
    290A  CYS*     3.2    26.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 287 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220A  TYR*     4.5     3.2    -      -       -      -
    224A  PHE*     4.1    12.0    -      -       -      -
    278A  MET*     3.1    30.5    +      -       +      +
    279A  ASP      3.7     9.9    +      -       -      -
    281A  LYS*     2.5    34.9    +      -       +      +
    282A  ARG*     4.1     2.7    -      -       -      +
    283A  VAL      3.0    11.7    +      -       -      +
    284A  PRO*     3.5     5.8    -      -       +      +
    286A  ASP*     1.3    76.5    -      -       -      +
    288A  LEU*     1.3    62.8    +      -       -      +
    290A  CYS*     3.2    14.9    +      -       -      +
    291A  ILE*     3.2    16.9    +      -       -      +
    334A  ASN*     2.7    27.7    +      -       -      +
    337A  TYR*     3.5    41.1    -      -       +      -
    338A  ILE*     3.9    16.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 288 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284A  PRO      2.8    21.7    +      -       -      +
    285A  ARG*     3.7     6.1    -      -       -      +
    287A  LYS*     1.3    72.4    -      -       -      +
    289A  ALA*     1.3    56.2    +      -       -      +
    291A  ILE*     3.1    11.4    +      -       +      +
    292A  THR*     2.9    32.9    +      -       -      -
    338A  ILE*     3.9    14.8    -      -       +      -
    342A  CYS*     3.5    31.6    -      -       -      -
    346A  ARG*     3.8    19.7    -      -       +      -
    347A  LEU*     3.7    17.3    -      -       +      -
    352A  ASP*     3.9    19.2    -      -       +      +
    356A  PHE*     3.6    34.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 289 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    285A  ARG*     3.1    16.0    +      -       +      +
    286A  ASP*     3.5    14.8    -      -       -      +
    287A  LYS      3.2     0.4    -      -       -      -
    288A  LEU*     1.3    75.1    -      -       -      +
    290A  CYS*     1.3    58.3    +      -       -      +
    292A  THR*     3.8     6.3    -      -       -      +
    293A  LYS*     2.9    41.7    +      -       +      +
    352A  ASP*     4.8     4.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 290 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274A  ASP*     3.3    22.7    -      -       -      +
    275A  ILE*     5.2     0.4    -      -       -      -
    277A  GLU*     3.9     9.9    -      -       -      -
    278A  MET*     3.8    23.1    -      -       +      -
    281A  LYS*     3.7    30.5    -      -       -      -
    286A  ASP      3.2    18.5    +      -       -      -
    287A  LYS      3.2     9.9    +      -       -      +
    289A  ALA*     1.3    74.4    -      -       -      +
    291A  ILE*     1.3    65.3    +      -       -      +
    293A  LYS*     3.4    16.3    +      -       -      +
    294A  CYS*     2.9    25.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 291 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    275A  ILE*     4.1    16.8    -      -       +      -
    278A  MET*     3.6    22.0    -      -       -      -
    287A  LYS      3.5    10.5    -      -       -      +
    288A  LEU*     3.1    13.1    +      -       +      +
    290A  CYS*     1.3    76.0    -      -       -      +
    292A  THR*     1.3    57.8    +      -       -      +
    294A  CYS*     3.3     3.9    +      -       +      +
    295A  SER*     2.9    34.1    +      -       -      +
    319A  LEU*     5.9     4.3    -      -       +      -
    338A  ILE*     4.0    10.3    -      -       +      -
    352A  ASP      5.9     0.2    -      -       -      +
    355A  TYR*     3.5    33.9    -      -       +      +
    356A  PHE*     3.8    23.1    -      -       +      +
    359A  LEU*     3.6    30.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 292 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288A  LEU      2.9    13.7    +      -       -      -
    289A  ALA*     3.8     6.3    -      -       -      -
    290A  CYS      3.3     0.2    -      -       -      -
    291A  ILE*     1.3    73.9    -      -       -      +
    293A  LYS*     1.3    64.7    +      -       +      +
    295A  SER*     3.2     3.9    +      -       -      -
    296A  LYS*     3.0    52.9    +      -       +      +
    351A  GLU*     3.9     6.1    -      -       -      +
    352A  ASP*     2.8    32.3    +      -       -      +
    355A  TYR*     3.5    26.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274A  ASP*     3.2    30.3    +      -       -      +
    277A  GLU*     5.7     3.0    -      -       -      +
    281A  LYS*     5.6     5.5    -      -       -      +
    289A  ALA*     2.9    31.0    +      -       +      +
    290A  CYS*     3.7    21.2    -      -       -      +
    292A  THR*     1.3    73.2    -      -       +      +
    294A  CYS*     1.3    66.5    +      -       -      +
    296A  LYS*     3.3     7.2    +      -       -      +
    297A  HIS*     3.0    28.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    271A  ALA*     3.4    21.8    -      -       -      +
    274A  ASP*     3.3    20.6    +      -       +      -
    275A  ILE*     4.0    14.8    -      -       +      +
    290A  CYS      2.9    17.9    +      -       -      +
    291A  ILE*     3.4     9.0    -      -       -      +
    293A  LYS*     1.3    76.5    -      -       -      +
    295A  SER*     1.3    58.8    +      -       -      +
    297A  HIS      3.3     1.7    +      -       -      -
    298A  ILE*     2.9    48.1    +      -       -      +
    319A  LEU*     4.1    11.7    -      -       -      -
    322A  ILE*     4.0    12.1    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291A  ILE*     2.9    17.5    +      -       -      +
    292A  THR      3.2     8.0    +      -       -      -
    294A  CYS*     1.3    78.7    -      -       -      +
    296A  LYS*     1.3    58.3    +      -       -      +
    298A  ILE*     3.3     5.9    +      -       -      +
    299A  PHE*     2.8    34.2    +      -       -      -
    315A  PHE*     3.3    34.5    -      -       -      -
    319A  LEU*     5.2     3.5    -      -       -      +
    355A  TYR*     3.5    30.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  THR*     3.0    33.3    +      -       +      +
    293A  LYS*     3.3     6.5    +      -       -      +
    295A  SER*     1.3    73.9    -      -       -      +
    297A  HIS*     1.3    66.8    +      -       +      +
    299A  PHE*     3.4    18.0    +      -       +      +
    300A  ASN*     2.9    32.7    +      -       -      +
    351A  GLU*     2.8    41.4    +      -       -      -
    355A  TYR*     4.7     5.4    -      -       -      +
     52B  LEU*     4.5    12.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with HIS 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  MET*     3.6    44.2    -      -       +      +
    270A  LYS*     3.7    34.9    -      -       +      +
    271A  ALA*     3.9     5.2    -      -       +      -
    274A  ASP*     2.5    38.2    +      -       -      -
    293A  LYS*     3.0    22.2    +      -       -      +
    294A  CYS      3.7     3.8    -      -       -      +
    296A  LYS*     1.3    76.2    -      -       -      +
    298A  ILE*     1.3    63.7    +      -       -      +
    300A  ASN*     3.3     5.6    +      -       -      +
    301A  ALA*     3.0    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  MET      6.1     0.2    -      -       -      -
    271A  ALA*     4.0     6.3    -      -       +      +
    294A  CYS*     2.9    24.4    +      -       -      +
    295A  SER*     3.4     6.5    -      -       -      +
    297A  HIS*     1.3    75.7    -      -       -      +
    299A  PHE*     1.3    63.8    +      -       -      +
    301A  ALA*     3.1    10.0    +      -       -      +
    302A  ILE*     2.9    34.5    +      -       +      +
    315A  PHE*     3.7    20.2    -      -       +      -
    318A  THR*     3.5    23.3    -      -       +      -
    319A  LEU*     3.7    36.1    -      -       +      -
    322A  ILE*     3.7    33.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295A  SER      2.8    29.7    +      -       -      +
    296A  LYS*     3.7    14.4    -      -       +      +
    297A  HIS      3.3     0.4    -      -       -      -
    298A  ILE*     1.3    73.5    -      -       -      +
    300A  ASN*     1.3    57.8    +      -       -      +
    302A  ILE*     3.3     5.5    +      -       +      +
    303A  LYS*     2.9    30.8    +      -       -      +
    310A  ALA*     3.8    13.3    -      -       +      +
    315A  PHE*     3.3    35.0    -      +       +      -
    355A  TYR*     3.2    42.6    -      +       -      -
     52B  LEU*     3.9    20.2    -      -       +      +
     53B  GLN*     3.4    38.8    -      -       +      -
     55B  SER*     3.8    17.3    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267A  MET*     3.7    30.2    -      -       +      +
    296A  LYS*     2.9    25.4    +      -       -      +
    297A  HIS*     3.6     9.8    +      -       -      +
    298A  ILE      3.3     0.2    -      -       -      -
    299A  PHE*     1.3    76.6    -      -       -      +
    301A  ALA*     1.3    62.6    +      -       -      +
    303A  LYS*     3.3     2.0    +      -       -      +
    304A  ILE*     2.9    36.4    +      -       +      +
     52B  LEU*     3.7    25.7    -      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    257A  VAL*     4.2    12.3    -      -       +      -
    264A  VAL*     3.8    22.6    -      -       +      +
    267A  MET*     3.8    19.8    -      -       +      +
    268A  VAL*     4.4    10.3    -      -       +      -
    297A  HIS      3.0    12.9    +      -       -      +
    298A  ILE*     3.1    12.1    +      -       -      +
    300A  ASN*     1.3    75.2    -      -       -      +
    302A  ILE*     1.3    61.3    +      -       -      +
    305A  THR*     2.9    30.2    +      -       -      -
    318A  THR*     5.7     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  PRO*     3.7    23.8    -      -       +      +
    257A  VAL*     3.8    18.4    -      -       +      -
    298A  ILE*     2.9    32.3    +      -       +      +
    299A  PHE*     3.8     5.6    -      -       -      +
    301A  ALA*     1.3    76.9    -      -       -      +
    303A  LYS*     1.3    57.9    +      -       -      +
    305A  THR*     3.3     0.9    +      -       -      -
    306A  LYS*     2.9    36.7    +      -       +      +
    308A  GLU      4.4     5.2    -      -       -      +
    310A  ALA*     3.7    34.8    -      -       +      -
    314A  ASP*     3.6    17.9    -      -       +      +
    315A  PHE*     4.0     3.1    -      -       +      -
    318A  THR*     3.6    18.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  PHE      2.9    21.0    +      -       -      +
    300A  ASN*     3.9     3.4    -      -       -      +
    302A  ILE*     1.3    72.6    -      -       -      +
    304A  ILE*     1.3    60.4    +      -       +      +
    307A  ASN*     2.8    53.0    +      -       -      +
    308A  GLU*     3.5    26.9    -      -       -      +
    309A  PRO*     3.8     5.6    -      -       +      -
    310A  ALA      5.7     0.2    -      -       -      +
     50B  THR*     3.8    20.6    +      -       -      +
     51B  THR      2.7    29.2    +      -       -      +
     52B  LEU*     4.0    22.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261A  ILE*     4.0    22.0    -      -       +      +
    263A  GLU*     3.5    46.4    -      -       +      +
    264A  VAL*     3.5    19.7    -      -       +      -
    267A  MET*     4.2    14.4    -      -       +      -
    300A  ASN*     2.9    34.4    +      -       +      +
    301A  ALA*     4.5     1.6    -      -       -      +
    303A  LYS*     1.3    78.6    -      -       +      +
    305A  THR*     1.3    62.5    +      -       -      +
    307A  ASN*     3.7    15.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  PRO      3.5    21.3    -      -       -      +
    257A  VAL*     3.3     3.0    -      -       -      -
    258A  ASN*     2.8    43.0    +      -       +      +
    261A  ILE*     4.4     9.9    -      -       +      +
    264A  VAL*     3.4     9.4    -      -       -      +
    301A  ALA      2.9    18.8    +      -       -      -
    302A  ILE      3.7     0.2    -      -       -      -
    304A  ILE*     1.3    79.0    -      -       -      +
    306A  LYS*     1.3    71.5    +      -       -      +
    307A  ASN*     4.1     4.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256A  PRO*     3.6    42.5    -      -       +      +
    302A  ILE*     2.9    20.4    +      -       +      +
    305A  THR*     1.3    89.9    -      -       -      +
    307A  ASN*     1.3    71.7    +      -       -      +
    308A  GLU*     3.2    23.7    +      -       +      +
    314A  ASP*     5.8     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303A  LYS*     2.8    37.1    +      -       -      +
    304A  ILE*     3.7    15.4    +      -       -      +
    305A  THR      4.1     4.0    -      -       -      +
    306A  LYS*     1.3    81.4    -      -       -      +
    308A  GLU*     1.3    69.2    +      -       -      +
    309A  PRO*     4.9     0.2    -      -       -      +
----------------------------------------------------------
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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