Contacts of the helix formed by residues 225 - 256 (chain D) in PDB entry 4OQB


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 LYS 225 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  SER*     1.3    76.2    -      -       -      +
    226D  LYS*     1.3    65.4    -      -       +      +
    228D  LYS*     4.0     1.3    -      -       -      +
    229D  ASP*     3.1    38.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 226 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  SER      4.7     0.8    -      -       -      +
    225D  LYS*     1.3    83.6    -      -       +      +
    227D  GLU*     1.3    65.1    +      -       +      +
    229D  ASP*     4.2     4.7    -      -       -      -
    230D  LYS*     3.1    64.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 227 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  SER*     3.5    33.8    +      -       -      +
    225D  LYS      3.3     0.6    -      -       -      -
    226D  LYS*     1.3    79.2    -      -       +      +
    228D  LYS*     1.3    57.2    +      -       -      +
    230D  LYS*     4.1     2.2    -      -       -      +
    231D  ASP*     3.1    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 228 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    224D  SER*     3.1    18.8    +      -       -      +
    225D  LYS*     4.3     1.8    -      -       -      +
    227D  GLU*     1.3    77.4    -      -       -      +
    229D  ASP*     1.3    59.6    +      -       -      +
    231D  ASP*     3.6    12.5    -      -       -      +
    232D  SER*     2.8    36.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 229 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    225D  LYS*     3.1    31.0    +      -       +      +
    226D  LYS*     3.9     7.0    -      -       -      +
    227D  GLU      3.3     0.4    -      -       -      -
    228D  LYS*     1.3    74.5    -      -       -      +
    230D  LYS*     1.3    64.0    +      -       +      +
    232D  SER*     3.3     4.0    +      -       -      -
    233D  LYS*     2.7    45.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 230 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226D  LYS*     3.1    48.7    +      -       +      +
    227D  GLU*     4.3     2.2    -      -       -      +
    229D  ASP*     1.3    82.9    +      -       +      +
    231D  ASP*     1.3    56.0    +      -       -      +
    233D  LYS*     4.5     5.2    -      -       +      -
    234D  LEU*     3.0    32.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 231 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    227D  GLU      3.1    20.7    +      -       -      +
    228D  LYS*     3.6    13.3    -      -       -      +
    230D  LYS*     1.3    78.8    -      -       -      +
    232D  SER*     1.3    61.8    +      -       -      +
    234D  LEU*     3.9     6.2    -      -       -      +
    235D  GLU*     3.5    20.1    +      -       -      +
    359D  PRO*     5.7     4.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 232 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228D  LYS*     2.8    26.9    +      -       -      -
    229D  ASP*     3.9     4.7    -      -       -      -
    231D  ASP*     1.3    74.6    -      -       -      +
    233D  LYS*     1.3    63.3    +      -       -      +
    235D  GLU*     3.4    11.7    +      -       -      +
    236D  LYS*     3.2    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 233 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229D  ASP*     2.7    32.2    +      -       -      +
    230D  LYS*     4.4     5.8    -      -       +      +
    232D  SER*     1.3    70.2    -      -       -      +
    234D  LEU*     1.3    63.3    +      -       -      +
    236D  LYS*     3.4    24.0    -      -       +      +
    237D  ALA*     3.2    20.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 234 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230D  LYS      3.0    21.0    +      -       -      +
    231D  ASP*     3.9     6.5    -      -       -      +
    232D  SER      3.3     0.2    -      -       -      -
    233D  LYS*     1.3    73.2    -      -       -      +
    235D  GLU*     1.3    57.4    +      -       +      +
    236D  LYS      3.1     1.3    -      -       -      -
    237D  ALA*     3.0     9.2    +      -       +      +
    238D  LEU*     2.7    57.1    +      -       +      +
    356D  ILE*     4.7    15.4    -      -       +      +
    357D  PHE      4.7     7.4    -      -       -      +
    359D  PRO*     5.1    13.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 235 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  TRP*     3.9    23.6    -      -       +      -
     86D  LYS*     4.8    11.1    +      -       -      -
    231D  ASP      3.5    10.4    +      -       -      +
    232D  SER*     3.4    12.9    +      -       -      +
    234D  LEU*     1.3    81.9    -      -       +      +
    236D  LYS*     1.3    60.8    +      -       -      +
    238D  LEU*     3.7     9.4    -      -       +      +
    239D  LYS*     3.2    22.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 236 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232D  SER      3.2    12.7    +      -       -      +
    233D  LYS*     3.4    32.8    -      -       +      +
    234D  LEU      3.1     0.8    -      -       -      -
    235D  GLU*     1.3    77.7    +      -       -      +
    237D  ALA*     1.3    56.7    +      -       -      +
    239D  LYS*     3.7    30.8    -      -       -      +
    240D  ALA*     3.1    26.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 237 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233D  LYS      3.2     9.3    +      -       -      +
    234D  LEU*     3.0    11.3    +      -       +      +
    236D  LYS*     1.3    76.9    -      -       -      +
    238D  LEU*     1.3    59.8    +      -       -      +
    240D  ALA*     3.5    10.3    -      -       -      +
    241D  GLN*     3.1    26.2    +      -       -      +
    356D  ILE*     3.6    22.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 238 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  TRP*     3.7    22.2    -      -       +      -
    234D  LEU*     2.7    29.5    +      -       +      +
    235D  GLU*     3.8    10.1    -      -       +      +
    236D  LYS      3.3     0.2    -      -       -      -
    237D  ALA*     1.3    73.3    -      -       -      +
    239D  LYS*     1.3    60.3    +      -       -      +
    241D  GLN*     3.4     5.0    +      -       +      +
    242D  ASN*     3.0    27.9    +      -       -      +
    356D  ILE*     3.3    39.9    -      -       +      +
    357D  PHE      3.7    14.6    -      -       -      +
    358D  PRO*     4.6    17.3    -      -       +      -
    359D  PRO*     5.0     5.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 239 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  TRP*     3.6    53.5    -      -       +      +
    235D  GLU      3.2    13.0    +      -       -      +
    236D  LYS*     3.7    24.2    -      -       -      +
    238D  LEU*     1.3    76.9    -      -       -      +
    240D  ALA*     1.3    65.7    +      -       -      +
    242D  ASN*     3.2     0.5    +      -       -      +
    243D  ASP*     3.0    48.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 240 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236D  LYS*     3.1    19.8    +      -       -      +
    237D  ALA*     3.5    12.1    -      -       +      +
    238D  LEU      3.3     0.2    -      -       -      -
    239D  LYS*     1.3    78.2    -      -       -      +
    241D  GLN*     1.3    57.4    +      -       -      +
    243D  ASP*     3.5     6.3    -      -       -      +
    244D  LEU*     3.1    27.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 241 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237D  ALA      3.1    17.7    +      -       -      +
    238D  LEU*     3.8     5.4    -      -       +      +
    239D  LYS      3.2     0.2    -      -       -      -
    240D  ALA*     1.3    76.6    -      -       -      +
    242D  ASN*     1.3    67.1    +      -       -      +
    244D  LEU*     3.5     9.2    +      -       +      +
    245D  ILE*     3.4    27.6    +      -       +      +
    288D  VAL*     6.0     0.4    -      -       +      -
    289D  PHE*     3.6    22.4    -      -       +      -
    353D  GLN*     3.5    22.3    +      -       -      +
    354D  ASP      3.4    19.6    +      -       -      -
    355D  ARG*     3.5    11.9    -      -       -      +
    356D  ILE*     2.7    44.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 242 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     75D  SER      3.5     9.9    +      -       -      -
     76D  GLU      5.0     0.2    +      -       -      -
     77D  LEU      3.1    20.9    +      -       -      +
     78D  ARG*     3.5     3.1    -      -       -      -
     79D  TRP*     2.7    45.6    +      -       +      +
     82D  GLN*     3.2    14.5    -      -       -      +
    238D  LEU      3.0    16.8    +      -       -      +
    239D  LYS      3.2     4.2    +      -       -      +
    241D  GLN*     1.3    79.9    -      -       -      +
    243D  ASP*     1.3    59.3    +      -       -      +
    244D  LEU      3.2     0.2    -      -       -      -
    245D  ILE*     3.5     4.8    +      -       -      +
    246D  TRP*     3.3    32.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 243 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     79D  TRP*     4.9     5.0    -      -       +      +
    239D  LYS*     3.0    50.6    +      -       -      +
    240D  ALA*     3.5     8.7    -      -       -      +
    242D  ASN*     1.3    81.6    -      -       +      +
    244D  LEU*     1.3    61.9    +      -       -      +
    246D  TRP*     3.9    11.7    -      -       +      -
    247D  ASN*     3.0    36.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 244 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240D  ALA      3.1    19.6    +      -       -      +
    241D  GLN*     3.6    10.5    -      -       +      +
    242D  ASN      3.2     0.8    -      -       -      -
    243D  ASP*     1.3    79.6    +      -       -      +
    245D  ILE*     1.3    66.7    +      -       +      +
    247D  ASN*     3.4     7.6    +      -       +      +
    248D  ILE*     3.0    46.9    +      -       +      +
    288D  VAL*     4.6    14.8    -      -       +      -
    348D  LEU*     4.5    19.1    -      -       +      +
    349D  LYS      5.3     3.1    -      -       -      +
    350D  VAL*     5.1    11.2    -      -       +      -
    353D  GLN*     3.7    30.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 245 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    241D  GLN*     3.4    16.6    +      -       +      +
    242D  ASN*     3.8     7.4    -      -       -      +
    244D  LEU*     1.3    77.6    -      -       +      +
    246D  TRP*     1.3    52.1    +      -       +      +
    248D  ILE*     3.1     9.3    +      -       -      +
    249D  LYS*     2.6    46.0    +      -       +      +
    281D  ASP*     5.2     6.3    -      -       -      +
    284D  ALA*     3.7    24.5    -      -       +      +
    285D  ASP*     5.1     3.1    -      -       +      +
    288D  VAL*     4.4    17.7    -      -       +      -
    289D  PHE*     3.8    29.4    -      -       +      -
    355D  ARG*     3.8    19.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 246 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13D  TYR*     3.8    32.1    -      +       -      -
     76D  GLU      3.2    29.0    +      -       -      -
     77D  LEU      3.2    11.1    +      -       -      -
     78D  ARG*     3.2    56.5    -      -       +      +
    242D  ASN*     3.3    30.3    +      -       -      +
    243D  ASP*     4.0    10.3    -      -       +      -
    244D  LEU      3.3     0.2    -      -       -      -
    245D  ILE*     1.3    77.2    -      -       +      +
    247D  ASN*     1.3    66.3    +      -       -      +
    249D  LYS*     3.7    42.7    -      -       +      +
    250D  ASP*     3.0    34.1    +      -       +      +
    280D  LEU*     6.0     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 247 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78D  ARG*     5.8     1.4    +      -       -      -
    243D  ASP*     3.0    28.2    +      -       -      +
    244D  LEU*     3.5     9.3    -      -       +      +
    246D  TRP*     1.3    76.8    -      -       -      +
    248D  ILE*     1.3    61.5    +      -       +      +
    250D  ASP*     3.1    14.7    -      -       -      +
    251D  GLU*     3.0    27.1    -      -       +      +
    348D  LEU*     6.2     4.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 248 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244D  LEU*     3.0    34.0    +      -       +      +
    245D  ILE*     3.4     7.4    -      -       -      +
    247D  ASN*     1.3    77.2    -      -       +      +
    249D  LYS*     1.3    66.1    +      -       -      +
    251D  GLU*     3.5     7.5    +      -       -      +
    252D  LEU*     3.2    20.4    +      -       +      +
    284D  ALA*     4.1    13.2    -      -       +      -
    287D  MET*     3.2    34.3    -      -       +      -
    288D  VAL*     3.4    29.6    -      -       +      -
    345D  LEU*     5.3    13.2    -      -       +      +
    348D  LEU*     5.8     4.7    -      -       +      -
    350D  VAL*     5.6     7.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 249 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     76D  GLU      5.5     0.4    +      -       -      -
    245D  ILE*     2.6    32.9    +      -       +      +
    246D  TRP*     3.7    49.5    -      -       +      +
    247D  ASN      3.4     0.6    -      -       -      -
    248D  ILE*     1.3    73.4    -      -       -      +
    250D  ASP*     1.3    58.6    +      -       -      +
    252D  LEU*     3.1     9.5    +      -       -      +
    253D  LYS      3.1    19.6    +      -       -      -
    277D  SER*     4.0     9.7    +      -       -      -
    280D  LEU*     3.2    43.7    -      -       +      +
    281D  ASP*     3.3    37.2    +      -       -      +
    284D  ALA*     3.8    18.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 250 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78D  ARG*     2.7    36.9    +      -       -      +
    246D  TRP*     3.0    19.0    -      -       +      +
    247D  ASN*     3.1    13.3    -      -       -      +
    249D  LYS*     1.3    73.8    -      -       +      +
    251D  GLU*     1.3    61.3    +      -       -      +
    253D  LYS*     3.7    15.6    -      -       +      +
    254D  LYS*     3.2    27.7    +      -       -      +
    280D  LEU*     5.0     0.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 251 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247D  ASN*     3.0    23.9    +      -       +      +
    248D  ILE*     3.5     9.6    -      -       +      +
    249D  LYS      3.2     0.6    -      -       -      -
    250D  ASP*     1.3    82.6    +      -       -      +
    252D  LEU*     1.3    62.8    +      -       +      +
    254D  LYS*     3.3    24.9    +      -       -      +
    255D  VAL*     3.2    37.7    +      -       -      +
    344D  TYR*     5.2     7.8    -      -       -      +
    345D  LEU*     5.3    18.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 252 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248D  ILE*     3.2    13.9    +      -       +      +
    249D  LYS*     3.1     9.4    +      -       -      +
    251D  GLU*     1.3    77.1    -      -       +      +
    253D  LYS*     1.3    59.7    +      -       -      +
    255D  VAL*     3.9     7.6    -      -       +      -
    256D  CYS*     2.7    55.0    +      -       -      +
    261D  LEU*     4.0    20.8    -      -       +      +
    264D  LEU*     5.0     5.4    -      -       +      -
    280D  LEU*     5.0     7.4    -      -       +      +
    283D  VAL*     3.6    31.0    -      -       +      -
    284D  ALA*     4.7     3.4    -      -       -      +
    287D  MET*     3.7    28.0    -      -       +      -
    345D  LEU*     5.9     7.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 253 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249D  LYS      3.1     7.0    +      -       -      +
    250D  ASP*     3.9    21.5    -      -       +      +
    251D  GLU      3.3     0.4    -      -       -      -
    252D  LEU*     1.3    76.6    -      -       -      +
    254D  LYS*     1.3    60.4    +      -       -      +
    256D  CYS      4.0     9.4    -      -       -      +
    261D  LEU*     5.7     4.9    -      -       -      -
    276D  GLU*     3.6    32.5    +      -       -      +
    277D  SER*     4.9     4.9    -      -       -      +
    280D  LEU*     3.6    35.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 254 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250D  ASP      3.2    14.8    +      -       -      +
    251D  GLU*     3.5    28.5    +      -       -      +
    252D  LEU      3.2     0.4    -      -       -      -
    253D  LYS*     1.3    79.1    -      -       -      +
    255D  VAL*     1.3    64.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 255 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    251D  GLU*     3.4    26.2    -      -       -      +
    252D  LEU*     3.9    10.8    -      -       +      -
    254D  LYS*     1.3    90.5    -      -       +      +
    256D  CYS*     1.3    81.5    +      -       -      +
    257D  SER      4.2     0.3    +      -       -      -
    260D  ASP*     5.4     0.3    -      -       -      +
    341D  GLU*     4.7    24.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with CYS 256 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    252D  LEU*     2.7    39.2    +      -       -      +
    253D  LYS*     4.0    11.6    -      -       -      +
    255D  VAL*     1.3    91.6    -      -       -      +
    257D  SER*     1.3    67.9    +      -       -      +
    260D  ASP*     4.1    22.2    -      -       +      -
    261D  LEU*     4.2    16.5    -      -       +      +
    264D  LEU*     5.0     6.5    -      -       -      -
----------------------------------------------------------
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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