Contacts of the helix formed by residues 247 - 273 (chain D) in PDB entry 2F8J


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 HIS 247 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37D  LEU*     3.4    34.2    -      -       +      +
     40D  GLU*     4.7    12.3    -      -       +      -
    243D  VAL*     3.1    28.4    +      -       +      +
    244D  ALA      3.1     7.4    +      -       -      -
    246D  ASP*     1.3   100.6    +      -       +      +
    248D  ARG*     1.3    62.4    +      -       -      +
    249D  GLU*     3.3     4.2    +      -       -      -
    250D  ILE*     3.9     8.1    +      -       +      +
    251D  PHE*     3.3    15.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 248 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     64D  LYS*     4.0     6.5    +      -       -      +
     67D  SER*     3.8    14.8    +      -       -      -
     68D  TYR*     3.6    60.3    +      -       +      +
    204D  PHE*     4.6    11.4    -      -       +      -
    244D  ALA      4.0     6.1    -      -       -      +
    245D  LEU*     3.0    34.1    +      -       +      +
    246D  ASP      3.9     0.8    -      -       -      -
    247D  HIS*     1.3    74.1    -      -       -      +
    249D  GLU*     1.3    65.6    +      -       -      +
    250D  ILE      3.3     0.2    -      -       -      -
    251D  PHE*     3.1    12.3    +      -       -      +
    252D  GLU*     2.9    42.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 249 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247D  HIS      3.3     2.2    -      -       -      -
    248D  ARG*     1.3    77.4    -      -       -      +
    250D  ILE*     1.3    63.0    +      -       -      +
    252D  GLU*     3.2    15.6    +      -       -      +
    253D  GLU*     3.0    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 250 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34D  PRO*     4.4    20.6    -      -       +      -
     37D  LEU*     5.8     1.8    -      -       +      -
    247D  HIS*     3.9     9.3    +      -       +      +
    248D  ARG      3.3     0.4    -      -       -      -
    249D  GLU*     1.3    77.9    -      -       -      +
    251D  PHE*     1.3    60.6    +      -       +      +
    253D  GLU*     3.3     8.6    +      -       +      +
    254D  ARG*     3.1    46.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 251 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33D  PHE*     3.5    24.2    -      +       -      -
     34D  PRO*     4.0     5.4    -      -       +      -
     37D  LEU*     3.8    20.0    -      -       +      -
    203D  ALA*     3.7    23.6    -      -       +      +
    204D  PHE*     3.6    42.8    -      +       +      -
    244D  ALA*     3.5    21.3    -      -       +      -
    247D  HIS      3.3    27.4    -      -       -      -
    248D  ARG*     3.1     8.8    +      -       +      +
    250D  ILE*     1.3    75.8    -      -       +      +
    252D  GLU*     1.3    59.1    +      -       +      +
    254D  ARG*     3.4    31.7    +      -       -      +
    255D  THR*     2.9    34.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 252 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     68D  TYR*     5.6     2.1    -      -       -      -
    248D  ARG*     2.9    40.8    +      -       +      +
    249D  GLU*     3.4    14.5    -      -       -      +
    251D  PHE*     1.3    76.1    -      -       +      +
    253D  GLU*     1.3    57.6    +      -       -      +
    255D  THR*     3.5     7.4    +      -       -      -
    256D  LYS*     3.0    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 253 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249D  GLU      3.0    12.0    +      -       -      +
    250D  ILE*     3.3    10.3    +      -       +      +
    252D  GLU*     1.3    73.6    -      -       -      +
    254D  ARG*     1.3    61.4    +      -       +      +
    256D  LYS*     3.4     7.5    +      -       -      +
    257D  PHE*     3.1    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 254 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29D  ASN*     4.7     6.7    -      -       -      +
     31D  PHE*     3.4    46.5    -      -       +      +
     32D  PRO*     2.8    34.3    +      -       -      +
     33D  PHE*     4.4     0.2    -      -       -      +
     34D  PRO*     3.6    34.4    -      -       -      +
    203D  ALA      5.5     1.8    -      -       -      +
    205D  SER*     4.0     8.6    +      -       -      -
    250D  ILE*     3.1    30.5    +      -       +      +
    251D  PHE*     3.6    23.6    -      -       -      +
    253D  GLU*     1.3    74.6    -      -       +      +
    255D  THR*     1.3    64.2    +      -       -      +
    257D  PHE*     3.3     7.9    +      -       -      +
    258D  ILE*     3.0    32.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 255 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29D  ASN*     5.8     0.5    +      -       -      +
    178D  GLU*     3.2    31.9    -      -       +      +
    179D  PHE*     4.2    11.5    -      -       +      -
    203D  ALA*     4.3    20.4    +      -       -      +
    251D  PHE      2.9    20.3    +      -       -      -
    252D  GLU*     3.7     8.2    -      -       -      +
    254D  ARG*     1.3    75.0    -      -       -      +
    256D  LYS*     1.3    58.9    +      -       -      +
    258D  ILE*     3.2    10.4    +      -       -      +
    259D  VAL*     3.0    35.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 256 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252D  GLU      3.0    18.0    +      -       -      +
    253D  GLU*     3.6     8.7    -      -       -      +
    254D  ARG      3.3     0.2    -      -       -      -
    255D  THR*     1.3    77.0    -      -       -      +
    257D  PHE*     1.3    61.6    +      -       -      +
    259D  VAL*     3.1    12.0    -      -       +      +
    260D  GLU*     3.1    50.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 257 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31D  PHE*     3.5    36.8    -      +       +      -
    253D  GLU      3.1    13.8    +      -       -      +
    254D  ARG*     3.5     9.0    -      -       -      +
    255D  THR      3.3     0.2    -      -       -      -
    256D  LYS*     1.3    77.1    -      -       -      +
    258D  ILE*     1.3    63.2    +      -       +      +
    260D  GLU*     3.4    12.1    +      -       +      +
    261D  GLU*     2.9    59.0    +      -       +      +
    319D  GLY      3.9    17.7    -      -       -      -
    320D  LYS*     4.5     2.7    -      -       +      -
    321D  ARG*     3.9    27.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 258 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     29D  ASN*     3.4    30.5    -      -       -      +
     30D  PRO*     3.7    24.0    -      -       +      -
     31D  PHE*     4.5     2.2    -      -       +      -
    179D  PHE*     4.0    19.3    -      -       +      -
    254D  ARG      3.0    23.7    +      -       -      +
    255D  THR*     3.2     4.5    +      -       -      +
    257D  PHE*     1.3    86.9    -      -       +      +
    259D  VAL*     1.3    58.6    +      -       +      +
    261D  GLU*     3.4     2.3    +      -       -      +
    262D  ARG*     2.9    28.1    +      -       +      +
    281D  GLY      5.2     0.4    -      -       -      +
    282D  ASN*     3.7    31.6    -      -       +      -
    318D  ILE*     4.0    21.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 259 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179D  PHE*     3.6    41.3    -      -       +      +
    255D  THR*     3.0    26.2    +      -       +      +
    256D  LYS*     3.1    23.3    -      -       +      +
    258D  ILE*     1.3    77.5    -      -       +      +
    260D  GLU*     1.3    59.2    +      -       +      +
    262D  ARG*     3.3    23.3    +      -       -      +
    263D  GLU*     3.0    34.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 260 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256D  LYS*     3.1    40.4    +      -       +      +
    257D  PHE*     3.7    11.9    -      -       +      +
    259D  VAL*     1.3    76.1    -      -       +      +
    261D  GLU*     1.3    63.4    +      -       +      +
    263D  GLU*     3.4     5.3    +      -       -      +
    264D  ARG*     2.9    30.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 261 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257D  PHE*     2.9    49.0    +      -       +      +
    258D  ILE      3.7     3.8    -      -       -      +
    260D  GLU*     1.3    77.2    -      -       +      +
    262D  ARG*     1.3    57.0    +      -       -      +
    264D  ARG*     2.8    39.0    +      -       -      +
    265D  MET*     3.0    33.6    +      -       -      +
    318D  ILE*     4.0     8.3    -      -       +      -
    321D  ARG*     3.8    14.6    -      -       -      +
    324D  ASN*     2.8    37.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 262 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179D  PHE      3.0    26.5    +      -       -      -
    258D  ILE      2.9    17.9    +      -       -      +
    259D  VAL*     3.4    22.5    +      -       -      +
    260D  GLU      3.2     0.2    -      -       -      -
    261D  GLU*     1.3    77.2    -      -       -      +
    263D  GLU*     1.3    84.6    +      -       -      +
    265D  MET*     3.3     3.6    +      -       -      +
    266D  LYS*     2.9    40.2    +      -       +      +
    279D  SER      3.3    22.1    +      -       -      +
    280D  ARG*     3.3    21.2    -      -       -      +
    281D  GLY      3.1    28.8    +      -       -      +
    283D  PHE      3.9    20.9    -      -       -      +
    284D  VAL*     5.4     1.1    -      -       +      -
    318D  ILE*     3.9    17.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 263 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259D  VAL*     3.0    20.9    +      -       +      +
    260D  GLU*     4.0     5.4    -      -       -      +
    262D  ARG*     1.3    96.3    +      -       -      +
    264D  ARG*     1.3    60.0    +      -       -      +
    266D  LYS*     2.8    39.4    +      -       -      +
    267D  SER*     3.0    32.7    +      -       -      -
    280D  ARG*     4.6     2.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 264 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260D  GLU      2.9    17.4    +      -       -      +
    261D  GLU*     2.8    48.4    +      -       -      +
    263D  GLU*     1.3    76.7    -      -       -      +
    265D  MET*     1.3    68.6    +      -       -      +
    267D  SER*     3.5     5.9    +      -       -      -
    268D  ALA*     3.1    19.4    +      -       -      -
    321D  ARG*     5.1     2.2    -      -       -      +
    324D  ASN*     4.1     9.5    -      -       -      +
    325D  ASP*     2.5    34.9    +      -       -      +
    328D  LEU*     3.8    23.0    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 265 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261D  GLU      3.0    17.1    +      -       -      +
    262D  ARG*     3.7     4.5    -      -       -      +
    264D  ARG*     1.3    85.9    -      -       -      +
    266D  LYS*     1.3    65.6    +      -       -      +
    268D  ALA*     3.3     1.4    +      -       -      -
    269D  LEU*     2.9    22.2    +      -       -      -
    284D  VAL*     5.3    11.9    -      -       +      -
    316D  ILE*     5.0    12.1    -      -       +      +
    317D  THR      5.7     2.2    -      -       -      +
    318D  ILE*     3.5    29.8    -      -       +      -
    324D  ASN*     3.8    24.5    -      -       +      +
    327D  ILE*     4.0    31.2    -      -       +      -
    328D  LEU*     4.1    29.5    -      -       +      +
    331D  LEU*     6.2     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 266 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262D  ARG*     2.9    23.4    +      -       +      +
    263D  GLU*     2.8    45.3    +      -       -      +
    264D  ARG      3.4     0.2    -      -       -      -
    265D  MET*     1.3    75.5    -      -       -      +
    267D  SER*     1.3    57.6    +      -       -      +
    269D  LEU      3.5     0.2    +      -       -      -
    270D  ARG*     3.0    36.2    +      -       -      +
    276D  ILE*     3.4    20.0    -      -       +      +
    277D  THR      3.8    20.4    -      -       -      +
    278D  ASP*     2.7    29.8    +      -       -      -
    279D  SER*     3.0    26.9    +      -       -      +
    280D  ARG*     4.1     1.6    -      -       -      +
    284D  VAL*     4.8    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 267 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263D  GLU*     3.0    18.1    +      -       -      -
    264D  ARG*     3.7     6.7    -      -       -      -
    265D  MET      3.3     0.2    -      -       -      -
    266D  LYS*     1.3    74.1    -      -       -      +
    268D  ALA*     1.3    59.1    -      -       -      +
    270D  ARG*     3.3    10.2    +      -       -      +
    271D  GLU*     3.0    28.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 268 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    264D  ARG      3.1    11.9    +      -       -      -
    265D  MET      3.3     2.9    +      -       -      -
    267D  SER*     1.3    78.5    -      -       -      +
    269D  LEU*     1.3    55.9    -      -       -      +
    271D  GLU*     3.4     8.2    +      -       -      +
    272D  MET*     3.0    42.0    +      -       -      +
    328D  LEU*     5.0     7.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 269 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265D  MET      2.9    15.8    +      -       -      -
    266D  LYS*     3.9     1.6    -      -       -      +
    268D  ALA*     1.3    73.9    -      -       -      +
    270D  ARG*     1.3    64.1    +      -       -      +
    272D  MET*     3.2    19.5    +      -       -      +
    273D  GLY      3.2     0.2    +      -       -      -
    274D  TYR*     3.1    36.3    +      -       -      +
    276D  ILE*     5.2     6.5    -      -       -      -
    328D  LEU*     4.8     3.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 270 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266D  LYS*     3.0    24.3    +      -       -      +
    267D  SER*     3.3     9.2    +      -       -      +
    269D  LEU*     1.3    74.8    -      -       -      +
    271D  GLU*     1.3    57.2    +      -       -      +
    273D  GLY*     2.8    22.5    +      -       -      -
    274D  TYR      4.2     8.7    -      -       -      +
    276D  ILE*     3.8    21.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 271 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267D  SER      3.0    13.8    +      -       -      +
    268D  ALA*     3.6    11.7    -      -       -      +
    270D  ARG*     1.3    75.6    -      -       -      +
    272D  MET*     1.3    60.9    +      -       +      +
    273D  GLY      3.5     0.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with MET 272 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268D  ALA*     3.0    21.9    +      -       -      +
    269D  LEU*     3.5    10.5    -      -       -      +
    270D  ARG      3.1     0.6    -      -       -      -
    271D  GLU*     1.3    76.5    -      -       +      +
    273D  GLY*     1.3    57.6    +      -       -      +
    274D  TYR*     3.6    25.6    -      -       +      -
    328D  LEU*     3.5    43.7    -      -       +      +
    331D  LEU*     4.0     3.4    -      -       +      +
    332D  GLU*     3.6    41.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 273 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270D  ARG      2.8    14.1    +      -       -      -
    271D  GLU      3.3     1.2    +      -       -      -
    272D  MET*     1.3    78.5    -      -       -      +
    274D  TYR*     1.3    64.5    +      -       -      +
    275D  ARG      3.7     1.4    +      -       -      -
----------------------------------------------------------
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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