Contacts of the helix formed by residues 292 - 315 (chain A) in PDB entry 5ID3


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 ASP 292 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264A  THR*     3.0     9.5    +      -       -      -
    290A  ASN*     3.8     2.4    -      -       -      +
    291A  PHE*     1.4   123.3    -      -       +      +
    293A  ILE*     1.4    87.3    +      -       -      +
    294A  GLU      3.5     1.1    -      -       -      -
    295A  LYS*     4.1     8.5    -      -       -      +
    296A  TYR*     3.2    40.0    +      -       +      +
    293B  ILE*     4.9    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 293 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260A  TYR      5.6     4.9    -      -       -      +
    264A  THR*     4.3    15.6    -      -       +      +
    265A  GLN*     3.6    34.5    -      -       -      +
    292A  ASP*     1.4    94.5    +      -       -      +
    294A  GLU*     1.4    66.2    +      -       +      +
    297A  ASN*     3.4    24.1    +      -       -      +
    291E  PHE*     5.1     9.4    -      -       +      +
    292E  ASP*     5.1     5.4    -      -       +      +
    295E  LYS*     3.0    35.2    -      -       -      +
    296E  TYR*     3.4    16.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 294 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193A  LEU*     4.2    18.5    -      -       +      +
    264A  THR*     3.9    22.8    -      -       +      +
    265A  GLN*     5.5     1.7    -      -       -      +
    287A  GLN*     3.9    33.4    -      -       -      +
    289A  GLN      3.6    17.7    -      -       -      +
    290A  ASN*     3.7    21.5    -      -       +      +
    293A  ILE*     1.4    78.0    -      -       -      +
    295A  LYS*     1.4    58.5    +      -       -      +
    297A  ASN*     4.4     5.3    +      -       -      +
    298A  ARG*     3.0    37.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 295 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192A  LEU      4.9    15.7    -      -       -      +
    193A  LEU*     5.6     0.2    -      -       -      -
    290A  ASN*     3.6    20.0    -      -       -      +
    291A  PHE      4.3    17.6    +      -       -      -
    292A  ASP*     3.8     8.2    +      -       -      +
    293A  ILE      3.5     0.2    -      -       -      -
    294A  GLU*     1.4    79.5    -      -       -      +
    296A  TYR*     1.4    61.0    +      -       +      +
    298A  ARG*     4.5     0.6    -      -       -      +
    299A  LEU*     2.9    35.8    +      -       +      +
    265B  GLN*     5.6     2.4    -      -       -      +
    293B  ILE*     4.6    10.1    -      -       -      +
    294B  GLU*     3.9    20.8    +      -       -      -
    297B  ASN*     3.6    41.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 296 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292A  ASP*     3.2    26.7    +      -       +      +
    294A  GLU      3.6     0.2    -      -       -      -
    295A  LYS*     1.4    78.1    -      -       +      +
    297A  ASN*     1.4    62.9    +      -       -      +
    299A  LEU*     3.4    18.7    -      -       -      +
    300A  VAL*     3.6    12.5    -      -       -      +
    292B  ASP      3.3    22.9    +      -       -      -
    293B  ILE*     3.5    35.1    +      -       +      +
    296B  TYR*     3.5    27.4    -      +       +      +
    297B  ASN*     3.9    21.8    -      -       +      -
    300B  VAL*     5.7     0.2    -      -       -      +
    296E  TYR*     3.9    25.4    -      +       +      +
----------------------------------------------------------
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Residues in contact with ASN 297 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    293A  ILE      3.4    15.2    +      -       -      +
    294A  GLU*     4.4     5.7    +      -       -      +
    296A  TYR*     1.4    77.1    -      -       -      +
    298A  ARG*     1.3    98.2    +      -       -      +
    300A  VAL*     3.1    21.4    -      -       -      +
    301A  THR*     2.6    22.2    +      -       -      -
    295E  LYS*     3.1    34.3    -      -       +      +
    296E  TYR*     3.7    18.6    -      -       +      -
    299E  LEU*     3.3    19.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 298 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190A  GLU*     5.7     3.1    -      -       -      -
    191A  THR*     3.2    46.1    -      -       +      +
    193A  LEU*     3.9    21.8    -      -       +      -
    287A  GLN*     5.6     7.0    +      -       -      -
    294A  GLU*     3.0    23.7    +      -       -      +
    295A  LYS*     4.5     0.9    -      -       -      +
    297A  ASN*     1.3   104.8    +      -       -      +
    299A  LEU*     1.4    57.0    +      -       -      +
    301A  THR*     2.8    51.6    +      -       -      +
    192E  LEU*     5.8     4.9    -      -       -      +
    299E  LEU*     5.5     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 299 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  THR*     4.4    11.3    +      -       +      +
    192A  LEU*     4.7    17.9    -      -       +      +
    295A  LYS*     2.9    36.2    +      -       +      +
    296A  TYR*     3.4    20.0    -      -       -      +
    298A  ARG*     1.4    70.5    -      -       -      +
    300A  VAL*     1.4    58.4    +      -       -      +
    301A  THR      3.0     1.3    -      -       -      -
    302A  GLU*     2.7    40.6    +      -       +      +
    303A  VAL*     3.6     2.0    +      -       -      +
    297B  ASN*     3.2    24.2    -      -       +      +
    300B  VAL*     3.9    21.1    -      -       +      -
    301B  THR*     3.1    43.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 300 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296A  TYR      3.6    14.5    +      -       -      +
    297A  ASN*     3.1    24.2    -      -       -      +
    299A  LEU*     1.4    77.6    -      -       +      +
    301A  THR*     1.4    55.2    +      -       -      +
    303A  VAL*     3.0    37.9    +      -       +      +
    304A  ASP      3.6     2.1    +      -       -      -
    300B  VAL*     4.5    13.5    -      -       +      -
    296E  TYR*     5.7     2.5    -      -       +      -
    299E  LEU*     3.6    22.7    -      -       +      -
    300E  VAL*     4.3    33.0    -      -       +      -
    302E  GLU*     3.8     4.6    -      -       -      +
    303E  VAL*     4.6     8.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 301 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191A  THR*     4.8     3.4    -      -       -      -
    297A  ASN*     2.6    27.2    +      -       -      -
    298A  ARG*     2.8    37.2    +      -       -      +
    299A  LEU      3.0     0.8    +      -       -      -
    300A  VAL*     1.4    71.9    -      -       -      +
    302A  GLU*     1.4    54.2    +      -       -      +
    303A  VAL      3.0     2.0    -      -       -      -
    304A  ASP*     2.6    52.8    +      -       -      +
    305A  GLU*     5.1     0.2    -      -       -      -
    192E  LEU*     4.3    19.7    -      -       +      -
    299E  LEU*     3.1    17.3    -      -       +      +
    302E  GLU*     3.7    12.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 302 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  ASN*     2.7    39.8    +      -       -      +
    191A  THR*     3.8    18.5    -      -       +      +
    298A  ARG      3.4     4.9    +      -       -      -
    299A  LEU*     2.7    25.1    +      -       +      +
    301A  THR*     1.4    70.3    -      -       -      +
    303A  VAL*     1.4    69.6    +      -       +      +
    305A  GLU*     3.0    23.3    +      -       -      +
    306A  LEU*     3.6     1.0    +      -       -      +
    301B  THR*     6.3     0.7    -      -       -      -
    303B  VAL*     4.6     1.6    -      -       -      +
    304B  ASP*     3.8    24.5    -      -       +      +
    307B  ARG*     2.7    47.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 303 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299A  LEU      4.2     2.5    -      -       -      +
    300A  VAL*     3.0    29.8    +      -       +      +
    302A  GLU*     1.4    86.7    -      -       +      +
    304A  ASP*     1.4    51.9    +      -       -      +
    306A  LEU*     2.7    66.5    +      -       +      +
    300B  VAL*     4.3    10.3    -      -       +      +
    303B  VAL*     3.9    28.3    -      -       +      -
    303E  VAL*     3.8    31.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 304 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  VAL      3.6     1.8    +      -       -      -
    301A  THR*     2.6    40.2    +      -       -      +
    303A  VAL*     1.4    72.0    -      -       -      +
    305A  GLU*     1.4    81.0    +      -       -      +
    307A  ARG*     3.0    28.6    +      -       -      +
    308A  ASN*     3.6    10.2    +      -       -      +
    188E  ASN*     3.6    25.6    +      -       -      +
    192E  LEU*     5.1     3.7    -      -       -      +
    302E  GLU*     3.3    37.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 305 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  LEU*     4.7    11.0    -      -       +      +
    187A  GLU*     4.2    22.6    -      -       +      +
    191A  THR*     5.7     1.1    -      -       -      +
    301A  THR      4.2     1.8    -      -       -      +
    302A  GLU*     3.0    17.4    +      -       -      +
    304A  ASP*     1.4   102.1    -      -       -      +
    306A  LEU*     1.4    56.0    +      -       -      +
    308A  ASN*     3.0    39.2    +      -       -      +
    309A  GLN*     3.5     9.4    +      -       -      +
    307B  ARG*     3.5    37.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 306 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  GLU*     6.0     0.2    -      -       -      +
    303A  VAL*     2.7    55.3    +      -       +      +
    305A  GLU*     1.4    71.9    -      -       -      +
    307A  ARG*     1.4    80.7    +      -       +      +
    309A  GLN*     3.2    14.2    +      -       -      +
    310A  LEU*     3.1    21.0    +      -       +      +
    303B  VAL*     4.4     8.7    -      -       +      -
    306B  LEU*     3.5    32.3    -      -       +      -
    307B  ARG*     3.6    24.7    -      -       +      +
    310B  LEU*     3.9    15.0    -      -       +      -
    306D  LEU*     5.5     4.0    -      -       +      -
    303E  VAL*     5.2     1.6    -      -       +      -
    306E  LEU*     3.8    39.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 307 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    304A  ASP*     3.0    19.5    +      -       -      +
    306A  LEU*     1.4    86.2    -      -       +      +
    308A  ASN*     1.4    57.8    +      -       -      +
    311A  LYS*     3.3    17.4    +      -       -      +
    184E  LEU*     2.7    41.0    +      -       -      +
    185E  GLN*     3.0    27.0    +      -       -      +
    188E  ASN*     3.5    28.4    -      -       -      +
    302E  GLU      3.6    21.8    -      -       -      +
    303E  VAL*     5.3     0.4    -      -       -      -
    305E  GLU*     3.8    22.4    -      -       +      -
    306E  LEU*     3.7    12.8    -      -       +      +
    309E  GLN*     2.7    40.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 308 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  LEU*     5.8     4.9    -      -       +      -
    304A  ASP*     3.9     9.8    +      -       -      +
    305A  GLU*     3.0    37.0    +      -       -      +
    307A  ARG*     1.4    85.2    -      -       -      +
    309A  GLN*     1.4    67.1    +      -       +      +
    311A  LYS*     3.1    28.3    +      -       +      +
    312A  ARG*     3.6     1.7    +      -       -      +
    314B  ARG*     5.4     1.7    -      -       -      +
    185E  GLN*     2.7    47.4    +      -       -      +
    188E  ASN*     5.3     4.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 309 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  LEU*     4.1    10.8    -      -       +      +
    305A  GLU      3.7    10.3    -      -       -      +
    306A  LEU*     3.2     7.2    +      -       -      +
    308A  ASN*     1.4    76.0    -      -       +      +
    310A  LEU*     1.4    61.1    +      -       -      +
    312A  ARG      3.4     3.3    +      -       -      -
    313A  LEU*     3.4    19.9    +      -       -      +
    307B  ARG*     2.7    59.9    +      -       -      +
    310B  LEU*     3.3    14.8    -      -       +      +
    311B  LYS*     3.1    35.4    -      -       -      +
    314B  ARG*     3.6    40.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 310 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  LEU*     3.1    33.8    +      -       +      +
    308A  ASN      3.5     0.2    -      -       -      -
    309A  GLN*     1.4    71.9    -      -       -      +
    311A  LYS*     1.4    58.4    +      -       -      +
    313A  LEU*     3.0    11.7    +      -       -      +
    314A  ARG*     2.8    35.3    +      -       -      +
    310B  LEU*     3.7    35.4    -      -       +      -
    306E  LEU*     3.5    38.6    -      -       +      +
    309E  GLN*     3.6    19.3    -      -       +      +
    310E  LEU*     3.8    37.0    -      -       +      +
    313E  LEU*     4.6     6.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 311 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307A  ARG*     3.3    13.4    +      -       -      +
    308A  ASN*     3.1    19.5    -      -       +      +
    309A  GLN      3.4     0.4    -      -       -      -
    310A  LEU*     1.4    75.3    -      -       -      +
    312A  ARG*     1.4   101.2    +      -       +      +
    314A  ARG*     3.6    15.8    +      -       -      +
    315A  ASP*     3.6    15.6    +      -       -      +
    181E  LYS*     3.6    58.4    -      -       -      +
    184E  LEU*     4.4     6.3    -      -       +      -
    185E  GLN*     3.6    26.7    -      -       -      +
    309E  GLN*     3.1    25.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 312 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308A  ASN      4.6     1.3    -      -       -      +
    309A  GLN      3.4     8.3    +      -       -      +
    310A  LEU      3.3     0.6    -      -       -      -
    311A  LYS*     1.4   109.6    -      -       +      +
    313A  LEU*     1.4    63.7    +      -       -      +
    315A  ASP*     3.3     6.4    +      -       -      +
    316A  PRO*     3.1    19.8    -      -       -      +
    314B  ARG*     4.0    29.8    -      -       +      +
    318B  GLU*     2.7    59.6    +      -       -      +
    181E  LYS*     4.3    12.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 313 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309A  GLN      3.4    12.5    +      -       -      +
    310A  LEU*     3.0     9.5    +      -       -      +
    312A  ARG*     1.4    75.6    -      -       -      +
    314A  ARG*     1.4    61.7    +      -       -      +
    316A  PRO*     3.3    19.8    -      -       +      +
    317A  LEU      3.5    14.9    -      -       -      +
    318A  GLU*     3.3    31.3    -      -       +      +
    310B  LEU*     3.6    40.8    -      -       +      +
    313B  LEU*     3.6    26.2    -      -       +      +
    314B  ARG*     3.7    27.9    -      -       +      +
    318B  GLU      4.6     2.7    -      -       -      +
    313E  LEU*     4.0    19.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 314 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  LEU      2.8    20.1    +      -       -      +
    311A  LYS*     3.8    12.0    +      -       -      +
    312A  ARG      3.3     0.2    -      -       -      -
    313A  LEU*     1.4    72.5    -      -       -      +
    315A  ASP*     1.4    66.3    +      -       -      +
    316A  PRO      3.3     7.3    -      -       -      +
    317A  LEU      4.7     1.0    -      -       -      +
    180E  LYS*     3.9    31.5    +      -       -      +
    181E  LYS*     4.6     6.5    -      -       -      +
    184E  LEU*     3.4    28.0    -      -       -      +
    309E  GLN*     3.5    40.9    -      -       +      +
    312E  ARG*     3.0    60.2    -      -       +      +
    313E  LEU*     3.8    26.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 315 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    311A  LYS      3.6     7.5    +      -       -      +
    312A  ARG      3.3     8.9    +      -       -      +
    314A  ARG*     1.4    79.7    -      -       -      +
    316A  PRO*     1.4    71.7    -      -       +      +
    318B  GLU*     4.0     9.8    -      -       -      +
    181E  LYS*     3.4    40.3    +      -       +      +
----------------------------------------------------------
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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