Contacts of the helix formed by residues 243 - 266 (chain E) 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 GLU 243 (chain E).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243A  GLU*     4.2    15.0    -      -       -      +
    247A  TYR*     3.2    47.9    +      -       +      +
    243D  GLU*     2.6    45.2    -      -       +      +
    231E  ARG*     4.6     0.8    -      -       -      +
    242E  VAL*     1.4    83.7    -      -       +      +
    244E  PRO*     1.4    66.2    -      -       +      +
    245E  VAL*     3.5     4.7    -      -       -      -
    246E  THR*     3.5    15.0    +      -       -      -
    247E  TYR*     3.7    13.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 244 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224E  VAL*     5.4     2.2    -      -       +      -
    228E  LEU*     4.0    16.4    -      -       +      -
    231E  ARG*     3.4    24.5    -      -       -      +
    241E  ILE*     3.5     9.4    -      -       +      +
    242E  VAL      3.2    10.8    -      -       -      +
    243E  GLU*     1.4    89.1    -      -       +      +
    245E  VAL*     1.3    63.3    +      -       +      +
    247E  TYR*     2.7    56.2    -      -       +      +
    248E  PHE*     3.9     4.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 245 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248A  PHE*     5.7     2.7    -      -       +      -
    221E  ALA*     4.5    14.3    -      -       +      +
    224E  VAL*     4.5    12.2    -      -       +      +
    225E  GLN*     4.4    22.7    -      -       +      -
    228E  LEU*     4.1    28.4    -      -       +      +
    243E  GLU      5.2     2.5    -      -       -      +
    244E  PRO*     1.3    82.0    -      -       +      +
    246E  THR*     1.4    73.2    +      -       -      +
    248E  PHE*     3.7     5.2    +      -       -      +
    249E  ALA*     3.4    17.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 246 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247A  TYR*     3.4    44.7    +      -       +      +
    248A  PHE*     3.0    41.8    -      -       +      +
    251A  TYR*     6.5     0.9    -      -       +      -
    243E  GLU*     3.5     9.3    +      -       -      -
    244E  PRO      3.3     0.8    -      -       -      -
    245E  VAL*     1.4    82.4    -      -       -      +
    247E  TYR*     1.4    59.7    +      -       -      +
    249E  ALA*     3.0    12.5    +      -       +      +
    250E  THR*     2.9    33.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 247 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243D  GLU*     3.5    47.1    -      -       +      +
    246D  THR*     3.5    40.3    +      -       +      -
    247D  TYR*     4.7     4.7    -      -       +      -
    250D  THR*     4.2    14.7    -      -       +      +
    243E  GLU*     3.7     9.0    +      -       +      +
    244E  PRO*     2.7    55.7    +      -       +      +
    246E  THR*     1.4    74.4    -      -       -      +
    248E  PHE*     1.4    89.5    +      +       -      +
    250E  THR*     2.5    30.5    +      -       +      +
    251E  TYR*     3.4     3.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 248 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246D  THR*     3.2    32.5    -      -       +      -
    249D  ALA*     5.6     4.5    -      -       +      -
    220E  ALA*     4.3    28.9    -      -       +      +
    221E  ALA*     4.7     4.6    -      -       -      +
    224E  VAL*     3.8    34.1    -      -       +      -
    244E  PRO      4.1     3.6    -      -       -      -
    245E  VAL      3.7     6.8    +      -       -      +
    246E  THR      3.4     0.4    -      -       -      -
    247E  TYR*     1.4   111.6    -      +       -      +
    249E  ALA*     1.4    56.6    -      -       -      +
    251E  TYR*     3.0    40.5    +      +       +      +
    252E  SER*     3.2     6.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 249 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248A  PHE*     5.3     7.4    -      -       +      -
    251A  TYR*     3.6    15.4    -      -       +      -
    221E  ALA*     5.0    11.9    -      -       +      +
    245E  VAL*     3.4    14.6    +      -       +      +
    246E  THR*     3.0    20.9    +      -       +      +
    248E  PHE*     1.4    73.6    -      -       -      +
    250E  THR*     1.4    56.7    +      -       -      +
    252E  SER*     2.5    38.5    +      -       -      +
    253E  THR      3.0     3.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 250 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247A  TYR*     5.4     9.2    -      -       +      +
    250A  THR*     5.4     8.3    -      -       -      +
    251A  TYR*     4.8     6.0    -      -       +      -
    250D  THR*     3.8    16.6    -      -       -      +
    253D  THR*     5.0     5.1    -      -       -      +
    246E  THR*     2.9    27.8    +      -       +      +
    247E  TYR*     2.5    24.5    +      -       -      +
    249E  ALA*     1.4    73.9    -      -       -      +
    251E  TYR*     1.4    61.1    +      -       -      +
    253E  THR*     3.0    36.1    +      -       +      +
    254E  VAL*     3.4     6.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 251 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    246D  THR*     5.9     1.1    -      -       +      -
    249D  ALA*     3.4    40.4    +      -       +      +
    250D  THR*     4.6     7.9    -      -       +      -
    252D  SER*     4.1    10.2    +      -       -      -
    253D  THR*     2.9    43.5    +      -       -      -
    256D  ALA*     6.1     2.0    -      -       +      -
    216E  TRP*     3.7    35.3    -      +       +      -
    220E  ALA*     6.1     3.8    -      -       +      -
    247E  TYR      3.4     2.7    +      -       -      +
    248E  PHE*     3.0    31.1    +      +       +      +
    250E  THR*     1.4    81.3    +      -       -      +
    252E  SER*     1.4    58.4    +      -       -      +
    254E  VAL*     3.1    25.0    -      -       +      +
    255E  ALA*     3.4     4.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 252 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251A  TYR*     3.5    18.8    +      -       -      -
    216E  TRP*     5.8     0.4    -      -       -      -
    217E  ALA*     4.3    27.8    -      -       -      +
    220E  ALA*     6.4     0.4    -      -       -      -
    221E  ALA*     5.5     4.0    -      -       -      -
    248E  PHE      3.2     6.1    +      -       -      -
    249E  ALA*     2.5    31.4    +      -       -      +
    251E  TYR*     1.4    76.2    -      -       -      +
    253E  THR*     1.4    56.4    +      -       -      +
    255E  ALA*     2.9    29.8    +      -       -      +
    256E  ALA*     3.4     5.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 253 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250A  THR      5.7     0.7    -      -       -      +
    251A  TYR*     2.9    45.3    -      -       +      -
    254A  VAL*     3.0    37.2    -      -       +      +
    249E  ALA      3.0     0.4    +      -       -      -
    250E  THR*     3.0    25.3    +      -       -      +
    252E  SER*     1.4    80.5    +      -       -      +
    254E  VAL*     1.4    67.1    +      -       +      +
    256E  ALA*     3.2    22.4    +      -       -      +
    257E  THR*     3.5     7.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 254 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254A  VAL*     6.0     0.7    -      -       +      -
    253D  THR*     3.0    57.0    -      -       +      +
    254D  VAL*     4.8     3.6    -      -       -      +
    256D  ALA*     5.2     7.0    -      -       +      -
    257D  THR*     5.2     8.1    -      -       -      +
    216E  TRP*     5.5     3.1    -      -       +      -
    250E  THR      3.4     5.3    +      -       -      +
    251E  TYR*     3.1    22.2    -      -       +      +
    252E  SER      3.4     0.4    -      -       -      -
    253E  THR*     1.4    80.0    -      -       +      +
    255E  ALA*     1.4    59.5    +      -       -      +
    257E  THR*     2.7    34.2    +      -       +      +
    258E  PHE*     2.9    13.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 255 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214E  VAL*     4.9    12.9    -      -       +      +
    216E  TRP*     3.5    31.0    -      -       +      +
    217E  ALA*     3.9    19.3    -      -       +      -
    251E  TYR      3.4     6.9    +      -       -      +
    252E  SER*     2.9    18.7    +      -       -      +
    254E  VAL*     1.4    76.8    -      -       -      +
    256E  ALA*     1.4    60.8    +      -       -      +
    258E  PHE*     3.3    16.3    +      -       -      +
    259E  GLY*     3.5     8.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 256 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216A  TRP*     5.2    14.8    -      -       +      -
    254A  VAL*     5.1     8.3    -      -       +      -
    258A  PHE*     3.7    28.9    -      -       +      -
    214E  VAL*     6.3     1.6    -      -       -      -
    252E  SER      3.4     4.4    +      -       -      +
    253E  THR*     3.2    14.0    +      -       -      +
    254E  VAL      3.1     0.4    -      -       -      -
    255E  ALA*     1.4    79.0    -      -       -      +
    257E  THR*     1.4    60.6    +      -       -      +
    259E  GLY*     3.4    14.1    +      -       -      -
    260E  TYR      4.4     0.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 257 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    254A  VAL*     3.1    29.1    -      -       +      +
    257A  THR*     4.3    14.3    -      -       +      +
    258A  PHE*     5.7     0.9    -      -       -      -
    260A  TYR*     4.9     0.4    -      -       -      +
    257D  THR*     3.5    24.5    -      -       -      +
    260D  TYR*     5.9     0.4    -      -       +      -
    253E  THR      3.5     3.8    +      -       -      -
    254E  VAL*     2.7    25.0    +      -       +      +
    256E  ALA*     1.4    70.5    -      -       -      +
    258E  PHE*     1.4    60.6    +      -       -      -
    260E  TYR*     2.5    52.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 258 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210D  HIS*     6.5     0.4    -      +       -      -
    256D  ALA*     4.1    31.2    -      -       +      -
    257D  THR*     5.9     1.3    -      -       -      -
    259D  GLY*     5.8     2.7    -      -       -      -
    263D  TYR*     2.9    31.4    -      +       -      -
    216E  TRP*     6.4     0.2    -      -       -      +
    254E  VAL      2.9    13.1    +      -       -      +
    255E  ALA*     3.3    12.0    +      -       -      +
    257E  THR*     1.4    72.2    -      -       -      +
    259E  GLY*     1.3    63.1    +      -       -      +
    260E  TYR*     3.3     5.7    +      -       -      -
    261E  TYR*     3.3    13.8    +      -       +      +
    262E  LEU*     3.3    44.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 259 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  PHE*     5.0     5.4    -      -       -      -
    214E  VAL*     5.9     4.3    -      -       -      -
    255E  ALA      3.5     6.3    +      -       -      -
    256E  ALA      3.4    10.4    +      -       -      -
    257E  THR      3.2     2.0    -      -       -      -
    258E  PHE*     1.3    78.4    -      -       -      +
    260E  TYR*     1.4    61.6    +      -       -      +
    261E  TYR      3.1     1.2    +      -       -      -
    262E  LEU*     3.4    17.7    +      -       -      +
    263E  TYR*     3.1    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 260 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  PHE*     4.5    13.5    -      +       +      -
    260A  TYR*     2.9    43.7    -      +       +      -
    261A  TYR*     5.5    10.5    -      -       +      -
    257D  THR*     4.7     2.3    +      -       -      -
    260D  TYR*     3.5    37.3    -      +       +      +
    256E  ALA      4.4     3.7    +      -       -      -
    257E  THR*     2.5    48.2    +      -       +      +
    258E  PHE*     4.3     3.0    -      -       -      -
    259E  GLY*     1.4    71.8    -      -       -      +
    261E  TYR*     1.4    93.8    +      +       +      +
    263E  TYR*     3.5    18.4    -      -       -      +
    264E  THR*     4.9     2.6    +      -       -      -
    291E  PHE*     5.3     4.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with TYR 261 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260D  TYR*     5.2     9.9    -      -       +      -
    263D  TYR*     2.9    71.6    -      +       +      +
    291D  PHE*     2.9    44.3    -      +       -      -
    258E  PHE*     3.5    11.9    -      -       +      +
    259E  GLY      3.1     0.6    +      -       -      -
    260E  TYR*     1.4    93.0    -      +       +      +
    262E  LEU*     1.4    74.6    +      -       +      +
    263E  TYR      3.1     5.1    +      -       -      -
    264E  THR*     4.3     4.0    +      -       -      -
    265E  GLN*     3.8    20.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 262 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263D  TYR*     5.0     0.2    -      -       -      +
    210E  HIS*     3.7    34.8    -      -       +      +
    213E  ARG*     6.0     1.3    -      -       +      -
    214E  VAL*     4.0    22.2    -      -       +      -
    258E  PHE*     3.3    49.4    -      -       +      +
    259E  GLY*     3.7    21.1    -      -       -      +
    261E  TYR*     1.4    87.2    -      -       +      +
    263E  TYR*     1.4    64.4    +      -       -      +
    264E  THR      3.7     0.4    -      -       -      -
    265E  GLN*     4.1     6.7    -      -       -      -
    266E  GLN*     3.0    27.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 263 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258A  PHE*     4.9    15.5    -      +       -      -
    261A  TYR*     2.7    54.0    +      +       +      -
    204E  GLU*     3.7    24.2    +      -       -      +
    259E  GLY      3.1    14.8    +      -       -      +
    260E  TYR*     3.5    18.2    -      -       -      +
    261E  TYR      3.1     3.4    -      -       -      -
    262E  LEU*     1.4    73.5    -      -       -      +
    264E  THR*     1.4    60.2    +      -       -      +
    266E  GLN*     2.6    32.6    +      -       -      +
    291E  PHE*     3.9    19.1    -      +       +      -
----------------------------------------------------------
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Residues in contact with THR 264 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    204E  GLU*     5.6     2.1    -      -       -      +
    260E  TYR      5.2     1.6    +      -       -      -
    261E  TYR      4.3     3.1    +      -       -      -
    263E  TYR*     1.4    79.1    -      -       -      +
    265E  GLN*     1.4    59.1    +      -       -      +
    266E  GLN*     2.7    17.8    +      -       -      -
    267E  SER*     3.5     1.9    +      -       -      -
    289E  GLN*     3.0    34.8    -      -       -      +
    290E  ASN      3.5    18.8    +      -       -      +
    291E  PHE*     3.3    37.4    -      -       +      +
    292E  ASP*     3.0    29.2    +      -       -      +
    293E  ILE*     3.6    16.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 265 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    291D  PHE*     3.4    46.9    -      -       +      +
    261E  TYR*     3.8    24.7    -      -       +      +
    262E  LEU*     3.7     6.0    +      -       -      +
    263E  TYR      3.6     0.4    -      -       -      -
    264E  THR*     1.4    72.3    -      -       -      +
    266E  GLN*     1.4    51.9    +      -       -      +
    267E  SER*     3.0     6.7    -      -       -      -
    268E  PHE*     2.8    50.6    +      -       +      +
    289E  GLN*     4.3    15.3    -      -       -      +
    293E  ILE*     3.9    27.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 266 (chain E). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203E  ILE*     5.7     6.3    -      -       +      +
    204E  GLU*     4.2    17.6    +      -       -      +
    207E  ALA*     4.2    29.0    -      -       +      +
    210E  HIS*     3.9    41.4    +      -       +      +
    262E  LEU*     3.0    18.6    +      -       -      +
    263E  TYR*     2.6    19.8    +      -       -      +
    264E  THR      2.7    29.9    +      -       -      -
    265E  GLN*     1.4    66.8    -      -       -      +
    267E  SER*     1.3    69.6    +      -       -      +
    268E  PHE      3.2     1.1    +      -       -      -
    269E  GLU*     3.5    18.2    +      -       -      +
    270E  TYR*     5.6     1.7    -      -       -      -
----------------------------------------------------------
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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