Contacts of the helix formed by residues 245 - 272 (chain D) in PDB entry 6DWN


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 ASN 245 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234D  ALA*     5.0     8.3    -      -       -      +
    240D  LEU*     3.7    22.4    +      -       -      +
    243D  LEU      2.9    11.5    +      -       -      +
    244D  PRO*     1.3    73.3    -      -       -      +
    246D  PRO*     1.3    63.9    -      -       -      +
    247D  SER*     3.4    12.3    +      -       -      -
    248D  LEU*     3.1    37.9    +      -       +      +
    249D  ASN*     2.8    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 246 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244D  PRO*     3.8     7.2    -      -       +      +
    245D  ASN*     1.3    87.8    -      -       -      +
    247D  SER*     1.3    64.5    +      -       -      +
    249D  ASN*     4.1     5.3    -      -       +      +
    250D  ALA*     3.0    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 247 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223D  ASN*     2.9    37.4    +      -       -      +
    226D  GLU*     4.0    18.5    +      -       -      +
    227D  VAL*     3.6    14.8    -      -       -      +
    245D  ASN*     3.2     9.5    +      -       -      -
    246D  PRO*     1.3    84.0    -      -       -      +
    248D  LEU*     1.3    61.2    +      -       -      +
    250D  ALA*     4.8     0.4    -      -       -      -
    251D  PHE*     3.1    12.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 248 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110D  TYR*     4.0    28.3    -      -       +      -
    111D  THR*     4.5    17.0    -      -       +      -
    114D  LEU*     4.4     9.6    -      -       +      -
    227D  VAL*     5.4     4.5    -      -       +      -
    232D  ASN*     5.4     3.1    -      -       -      +
    234D  ALA*     4.7    11.2    -      -       +      -
    240D  LEU      4.4     0.4    -      -       -      +
    241D  ARG*     3.8    30.5    -      -       -      +
    245D  ASN*     3.1    30.1    +      -       +      +
    247D  SER*     1.3    77.3    -      -       -      +
    249D  ASN*     1.3    68.2    +      -       -      +
    251D  PHE*     3.1    18.7    +      -       +      +
    252D  LYS*     3.2    33.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 249 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243D  LEU      5.0     1.0    -      -       -      +
    244D  PRO*     5.0     1.6    -      -       -      +
    245D  ASN*     2.8    34.6    +      -       -      +
    246D  PRO*     4.1     4.7    -      -       +      +
    248D  LEU*     1.3    74.3    -      -       -      +
    250D  ALA*     1.3    64.9    +      -       -      +
    252D  LYS*     3.2    29.8    +      -       -      +
    253D  ASP*     3.2    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 250 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221D  ASN      5.7     3.6    -      -       -      +
    223D  ASN*     4.5    13.9    -      -       -      +
    246D  PRO      3.0    18.8    +      -       -      +
    247D  SER*     4.0     3.8    -      -       -      +
    249D  ASN*     1.3    77.1    -      -       -      +
    251D  PHE*     1.3    62.7    +      -       -      +
    253D  ASP*     3.4    14.4    +      -       -      +
    254D  LEU*     3.5    16.1    +      -       -      +
----------------------------------------------------------
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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
----------------------------------------------------------
    111D  THR*     3.5    22.4    -      -       -      -
    114D  LEU*     3.7    28.5    -      -       +      -
    115D  ILE*     3.9    13.7    -      -       +      -
    223D  ASN*     4.2     9.6    +      -       -      +
    224D  PHE*     3.5    37.5    -      +       -      -
    227D  VAL*     3.7    30.1    -      -       +      -
    228D  VAL*     3.8    19.3    -      -       +      -
    247D  SER      3.1    14.4    +      -       -      +
    248D  LEU*     3.2    15.3    -      -       +      +
    249D  ASN      3.1     0.4    -      -       -      -
    250D  ALA*     1.3    78.3    -      -       -      +
    252D  LYS*     1.3    59.8    +      -       -      +
    254D  LEU*     3.8     1.1    +      -       -      +
    255D  ASN*     2.6    46.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 252 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    110D  TYR*     3.6    24.0    +      -       -      -
    114D  LEU*     3.8    27.1    -      -       +      -
    241D  ARG      4.9     4.8    +      -       -      -
    248D  LEU*     3.2    29.1    +      -       -      +
    249D  ASN*     3.2    26.9    +      -       -      +
    251D  PHE*     1.3    77.7    -      -       -      +
    253D  ASP*     1.3    64.9    +      -       -      +
    255D  ASN*     3.5     5.6    +      -       -      +
    256D  GLU*     3.1    36.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 253 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249D  ASN      3.2    10.8    +      -       -      +
    250D  ALA*     3.8    11.7    -      -       -      +
    251D  PHE      3.3     0.4    -      -       -      -
    252D  LYS*     1.3    78.6    -      -       -      +
    254D  LEU*     1.3    65.6    +      -       +      +
    256D  GLU*     3.2    12.3    +      -       -      +
    257D  LYS*     2.7    57.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 254 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218D  VAL      6.0     3.8    -      -       -      +
    220D  LEU*     4.0    39.0    -      -       +      +
    221D  ASN      5.2     0.9    -      -       -      +
    222D  ASN*     3.2    32.8    -      -       +      +
    250D  ALA      3.5    11.9    +      -       -      +
    251D  PHE      4.7     1.3    -      -       -      +
    252D  LYS      3.4     0.2    -      -       -      -
    253D  ASP*     1.3    84.3    -      -       +      +
    255D  ASN*     1.3    59.7    +      -       -      +
    257D  LYS*     3.4    15.2    -      -       +      +
    258D  PHE*     2.5    54.4    +      -       +      +
    602D  AQ4      5.6     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 255 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114D  LEU      3.2    29.0    -      -       -      +
    115D  ILE*     3.4    23.3    -      -       -      +
    116D  SER      4.1     6.0    +      -       -      +
    117D  ASN      5.6     1.4    +      -       -      +
    224D  PHE*     4.5     8.9    -      -       -      -
    251D  PHE*     2.6    50.8    +      -       -      +
    252D  LYS*     3.8     5.2    -      -       -      +
    253D  ASP      3.3     0.4    -      -       -      -
    254D  LEU*     1.3    78.5    -      -       -      +
    256D  GLU*     1.3    60.8    +      -       +      +
    258D  PHE*     3.9     7.2    -      -       -      +
    259D  TYR*     3.2    24.8    +      -       -      +
    312D  LEU*     5.6     0.9    -      -       -      +
    602D  AQ4      4.8     8.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 256 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252D  LYS*     3.1    23.6    +      -       +      +
    253D  ASP*     3.5    12.3    -      -       -      +
    254D  LEU      3.1     0.6    -      -       -      -
    255D  ASN*     1.3    77.7    -      -       +      +
    257D  LYS*     1.3    69.2    +      -       +      +
    259D  TYR*     3.5     5.7    +      -       -      +
    260D  SER*     3.1    26.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 257 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253D  ASP*     2.7    45.3    +      -       -      +
    254D  LEU*     3.4    21.5    -      -       +      +
    256D  GLU*     1.3    79.1    +      -       -      +
    258D  PHE*     1.3    55.6    +      -       +      +
    260D  SER*     3.0     8.4    +      -       -      +
    261D  PHE*     2.7    36.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 258 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    218D  VAL*     5.3    15.5    -      -       +      -
    222D  ASN*     4.0    12.8    -      -       -      -
    254D  LEU*     2.5    39.5    +      -       +      +
    255D  ASN*     3.9     7.9    -      -       -      +
    257D  LYS*     1.3    72.5    -      -       +      +
    259D  TYR*     1.3    57.3    +      -       -      +
    261D  PHE*     3.2     8.1    +      +       +      +
    262D  MET*     2.8    30.4    +      -       -      +
    312D  LEU*     3.7    32.8    -      -       +      +
    315D  PHE*     4.5    24.2    -      +       -      -
    316D  GLY*     5.6     1.8    -      -       -      -
    319D  PHE*     4.9    10.3    -      +       -      -
    602D  AQ4      3.2    44.0    -      +       +      -
----------------------------------------------------------
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Residues in contact with TYR 259 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116D  SER*     3.3    43.0    +      -       -      -
    117D  ASN*     3.5    19.5    -      -       +      +
    255D  ASN      3.2    15.1    +      -       -      +
    256D  GLU*     3.8     7.0    -      -       -      +
    257D  LYS      3.2     0.6    -      -       -      -
    258D  PHE*     1.3    79.4    -      -       -      +
    260D  SER*     1.3    59.2    +      -       -      +
    262D  MET*     3.5    27.2    -      -       +      +
    263D  GLN*     3.4    36.7    +      -       -      +
    305D  GLU*     2.7    42.2    +      -       +      +
    309D  ASN*     3.6    17.2    +      -       +      +
    312D  LEU*     3.8    11.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 260 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    256D  GLU      3.1    13.8    +      -       -      -
    257D  LYS*     3.0    12.4    +      -       -      -
    259D  TYR*     1.3    75.7    -      -       -      +
    261D  PHE*     1.3    65.8    +      -       -      +
    262D  MET      3.1     1.3    -      -       -      -
    263D  GLN*     3.2    22.1    +      -       -      +
    264D  LYS*     3.2    11.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 261 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203D  PHE*     4.8    12.8    -      +       -      -
    207D  TYR*     4.2    21.1    -      +       -      -
    257D  LYS      2.7    18.7    +      -       -      +
    258D  PHE*     3.6     9.2    -      +       +      +
    260D  SER*     1.3    71.9    -      -       -      +
    262D  MET*     1.3    64.1    +      -       -      +
    264D  LYS*     3.2    30.1    +      -       +      +
    265D  MET*     3.2    48.2    +      -       +      +
    315D  PHE*     6.4     2.0    -      +       -      -
----------------------------------------------------------
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Residues in contact with MET 262 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203D  PHE*     6.4     2.0    -      -       +      -
    258D  PHE      2.8    17.0    +      -       -      +
    259D  TYR*     3.5    48.5    -      -       +      +
    260D  SER      3.1     0.2    -      -       -      -
    261D  PHE*     1.3    81.1    -      -       -      +
    263D  GLN*     1.3    70.8    +      -       +      +
    265D  MET*     3.0     8.2    +      -       +      +
    266D  VAL*     2.9    38.1    +      -       +      +
    305D  GLU*     6.1     0.4    -      -       +      -
    308D  ILE*     4.4     8.3    -      -       +      +
    309D  ASN*     3.6    33.4    -      -       +      +
    311D  VAL*     4.5    11.0    -      -       +      -
    312D  LEU*     4.4    23.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 263 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259D  TYR*     3.4    28.4    +      -       -      +
    260D  SER*     3.2    15.7    +      -       -      +
    262D  MET*     1.3    84.2    -      -       +      +
    264D  LYS*     1.3    56.9    +      -       -      +
    266D  VAL*     3.7     7.0    -      -       -      +
    267D  LYS*     2.8    60.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 264 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    260D  SER      3.2     8.2    +      -       -      +
    261D  PHE*     3.2    37.0    +      -       +      +
    263D  GLN*     1.3    78.5    -      -       -      +
    265D  MET*     1.3    64.0    +      -       -      +
    267D  LYS*     3.7     8.6    -      -       -      +
    268D  GLU*     2.9    59.6    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    203D  PHE*     3.4    54.7    -      -       +      +
    205D  ARG*     5.4     9.0    -      -       -      +
    207D  TYR*     3.9    14.8    -      -       -      +
    261D  PHE*     3.2    41.0    +      -       +      +
    262D  MET*     3.0     9.2    +      -       -      +
    264D  LYS*     1.3    81.2    -      -       -      +
    266D  VAL*     1.3    66.5    +      -       +      +
    268D  GLU*     3.3    23.8    +      -       -      +
    269D  HIS*     2.8    41.1    +      -       +      -
    282D  THR*     5.0     2.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 266 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262D  MET*     2.9    30.2    +      -       +      +
    263D  GLN*     3.8     6.1    -      -       -      +
    265D  MET*     1.3    77.4    -      -       +      +
    267D  LYS*     1.3    58.5    +      -       +      +
    269D  HIS*     3.4     2.9    +      -       -      +
    270D  TYR*     3.0    26.4    +      -       +      +
    282D  THR*     4.2    18.2    -      -       +      +
    286D  ILE*     4.1    12.5    -      -       +      +
    308D  ILE*     3.4    44.9    -      -       +      -
    311D  VAL*     5.3     4.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 267 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    263D  GLN*     2.8    59.3    +      -       -      +
    264D  LYS*     3.7     6.3    -      -       -      +
    266D  VAL*     1.3    74.6    -      -       +      +
    268D  GLU*     1.3    67.4    +      -       +      +
    269D  HIS      3.0     3.0    +      -       -      -
    270D  TYR*     3.1    17.8    +      -       -      +
    271D  LYS*     3.1    14.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 268 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    205D  ARG*     5.0    14.2    +      -       -      +
    264D  LYS*     2.9    52.0    +      -       +      +
    265D  MET*     3.3    25.6    +      -       -      +
    267D  LYS*     1.3    76.3    -      -       +      +
    269D  HIS*     1.3    64.1    +      -       -      +
    271D  LYS*     4.3     3.0    -      -       -      +
    272D  THR*     3.1    29.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 269 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203D  PHE*     3.6    15.8    +      -       +      -
    205D  ARG*     6.1     3.6    -      -       -      -
    265D  MET*     2.8    40.1    +      -       +      +
    266D  VAL      3.7     8.3    -      -       -      +
    267D  LYS      3.0     0.4    -      -       -      -
    268D  GLU*     1.3    81.9    -      -       +      +
    270D  TYR*     1.3    54.2    +      -       -      +
    271D  LYS      3.2     0.2    -      -       -      -
    272D  THR      3.1     0.7    +      -       -      -
    273D  PHE*     2.5    41.9    +      -       -      +
    279D  ARG*     3.7    14.9    +      -       -      +
    280D  ASP*     2.9    33.9    +      -       -      -
    282D  THR*     3.5    15.6    -      -       +      -
    283D  ASP*     3.0    26.9    -      -       -      +
    286D  ILE*     3.9    10.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 270 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266D  VAL*     3.0    19.1    +      -       +      +
    267D  LYS*     3.1     8.3    +      -       -      +
    269D  HIS*     1.3    76.4    -      -       -      +
    271D  LYS*     1.3    66.2    +      -       +      +
    273D  PHE*     3.6    17.4    +      +       +      +
    286D  ILE*     4.2    18.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 271 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    267D  LYS      3.1    14.3    +      -       -      +
    268D  GLU*     4.3     5.6    -      -       -      +
    270D  TYR*     1.3    83.1    -      -       +      +
    272D  THR*     1.3    66.1    +      -       +      +
    273D  PHE      3.4     1.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 272 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    268D  GLU      3.1    20.3    +      -       -      +
    269D  HIS      3.1     1.0    +      -       -      -
    271D  LYS*     1.3    84.8    -      -       +      +
    273D  PHE*     1.3    64.1    +      -       -      +
    274D  GLU*     3.3     5.7    +      -       -      +
    279D  ARG*     2.8    33.6    +      -       -      -
----------------------------------------------------------
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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