Contacts of the helix formed by residues 203 - 228 (chain B) in PDB entry 1W59


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 PRO 203 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    201B  ASN      4.1     5.2    -      -       -      +
    202B  MET*     1.3    88.6    -      -       -      +
    204B  LEU*     1.3    64.9    +      -       -      +
    205B  LYS*     4.3     8.1    -      -       +      +
    206B  LEU*     2.9    29.4    +      -       +      +
    207B  ALA*     2.9    20.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 204 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    164B  MET*     2.9    45.7    -      -       +      -
    165B  GLU*     5.9     0.4    -      -       +      -
    202B  MET      3.8     0.6    +      -       -      -
    203B  PRO*     1.3    72.0    -      -       -      +
    205B  LYS*     1.3    69.5    +      -       +      +
    206B  LEU      3.1     0.9    +      -       -      -
    207B  ALA*     3.3     6.8    +      -       -      +
    208B  PHE*     3.0    58.2    +      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 205 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203B  PRO*     3.2     7.5    -      -       +      +
    204B  LEU*     1.3    87.4    -      -       +      +
    206B  LEU*     1.3    88.1    +      -       +      +
    208B  PHE*     4.4     5.4    +      -       -      +
    209B  LYS*     3.4    45.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 206 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199B  VAL*     5.4     5.6    -      -       +      -
    201B  ASN      5.8     0.2    -      -       -      +
    202B  MET*     3.6    24.2    -      -       +      -
    203B  PRO*     2.9    29.3    +      -       +      +
    205B  LYS*     1.3   106.8    -      -       +      +
    207B  ALA*     1.3    59.0    +      -       -      +
    208B  PHE      3.3     2.2    -      -       -      -
    209B  LYS*     3.0    10.1    +      -       +      +
    210B  VAL*     2.9    37.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 207 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162B  PHE*     3.2    35.5    -      -       +      -
    164B  MET*     3.8    15.9    -      -       +      -
    195B  LEU*     4.1     0.7    -      -       -      +
    196B  PHE*     4.3     3.1    -      -       +      -
    202B  MET*     3.8    23.3    -      -       +      +
    203B  PRO      2.9    11.2    +      -       -      +
    204B  LEU      3.3     8.7    +      -       -      +
    206B  LEU*     1.3    77.2    -      -       -      +
    208B  PHE*     1.3    56.3    +      -       -      +
    210B  VAL*     3.3     2.9    +      -       -      +
    211B  ALA      2.8    23.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    162B  PHE*     3.6    17.9    -      +       -      -
    165B  GLU*     3.2    39.9    -      -       +      -
    192B  ASN*     5.7     0.7    -      -       -      -
    204B  LEU*     3.0    56.1    +      -       +      +
    205B  LYS*     4.7     5.2    -      -       -      +
    206B  LEU      3.3     0.4    -      -       -      -
    207B  ALA*     1.3    73.2    -      -       -      +
    209B  LYS*     1.3    66.6    +      -       -      +
    211B  ALA*     3.6     7.2    -      -       +      +
    212B  ASP*     2.9    29.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 209 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    205B  LYS*     3.4    43.9    +      -       -      +
    206B  LEU*     3.0    15.8    +      -       +      +
    208B  PHE*     1.3    78.7    -      -       +      +
    210B  VAL*     1.3    57.6    +      -       +      +
    212B  ASP*     3.1    13.9    +      -       +      +
    213B  GLU*     3.0    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 210 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195B  LEU*     4.0    20.0    -      -       +      -
    199B  VAL*     4.3    17.7    -      -       +      -
    202B  MET*     3.3    21.5    -      -       -      -
    206B  LEU*     2.9    26.5    +      -       +      +
    207B  ALA      3.6     6.3    -      -       -      +
    209B  LYS*     1.3    75.5    -      -       +      +
    211B  ALA*     1.3    60.0    +      -       -      +
    213B  GLU*     3.1     9.5    +      -       +      +
    214B  VAL*     2.9    34.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 211 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159B  THR*     5.1     4.5    -      -       +      +
    162B  PHE*     4.0     4.3    -      -       +      -
    192B  ASN*     3.7    23.3    +      -       -      +
    195B  LEU*     3.5    21.5    -      -       +      +
    207B  ALA      2.8    17.4    +      -       -      +
    208B  PHE*     3.6    10.1    -      -       +      +
    209B  LYS      3.3     0.2    -      -       -      -
    210B  VAL*     1.3    75.0    -      -       -      +
    212B  ASP*     1.3    65.3    +      -       -      +
    214B  VAL*     3.2     3.1    +      -       -      +
    215B  LEU*     3.0    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 212 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  ALA*     4.1    18.9    -      -       -      +
     51B  ASN*     3.2    40.7    +      -       +      +
     52B  THR*     4.7     2.4    +      -       -      -
    208B  PHE*     2.9    19.0    +      -       -      +
    209B  LYS*     3.1    15.0    +      -       +      +
    211B  ALA*     1.3    77.3    -      -       -      +
    213B  GLU*     1.3    62.6    +      -       -      +
    215B  LEU*     4.0     5.2    -      -       -      +
    216B  ILE*     2.8    42.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 213 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55B  ARG*     2.8    37.9    +      -       -      -
    209B  LYS      3.0    15.0    +      -       -      +
    210B  VAL*     3.1    15.2    +      -       +      +
    212B  ASP*     1.3    79.4    -      -       -      +
    214B  VAL*     1.3    62.9    +      -       +      +
    216B  ILE*     3.7     3.7    -      -       -      +
    217B  ASN*     2.9    45.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 214 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    190B  ILE*     4.4    14.1    -      -       +      -
    192B  ASN*     6.1     0.4    -      -       -      +
    195B  LEU*     4.0    21.5    -      -       +      -
    198B  ILE*     5.9     3.1    -      -       +      -
    210B  VAL*     2.9    24.0    +      -       +      +
    211B  ALA*     3.2     4.0    +      -       -      +
    213B  GLU*     1.3    74.9    -      -       +      +
    215B  LEU*     1.3    55.3    +      -       -      +
    217B  ASN*     3.3     5.9    +      -       -      +
    218B  ALA*     2.7    33.8    +      -       -      +
    251B  ILE*     4.3     5.4    -      -       +      -
    253B  ILE*     4.1    13.9    -      -       +      +
    274B  LEU*     3.6    29.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 215 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  ALA*     4.5    10.3    -      -       +      +
     52B  THR*     3.5    22.2    -      -       +      +
    128B  THR*     3.1    29.2    -      -       +      +
    129B  CYS      4.2    16.8    -      -       -      +
    130B  GLY      4.9     0.4    -      -       -      +
    157B  VAL*     3.7    20.4    -      -       +      +
    159B  THR*     3.6    25.1    -      -       +      -
    190B  ILE*     4.4     6.0    -      -       +      +
    211B  ALA      3.0    16.5    +      -       -      +
    212B  ASP*     4.0     5.2    -      -       -      +
    214B  VAL*     1.3    75.6    -      -       -      +
    216B  ILE*     1.3    56.1    +      -       -      +
    218B  ALA*     3.0     3.2    +      -       -      +
    219B  VAL*     2.8    44.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 216 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51B  ASN      4.3     4.3    -      -       -      +
     52B  THR*     3.9    28.9    -      -       +      +
     55B  ARG*     3.2    62.8    -      -       +      +
     56B  LEU*     4.0    12.1    -      -       +      +
     59B  GLU*     4.4     7.9    -      -       -      +
    212B  ASP*     2.8    38.1    +      -       +      +
    213B  GLU*     3.7     6.1    -      -       -      +
    215B  LEU*     1.3    75.9    -      -       -      +
    217B  ASN*     1.3    64.1    +      -       -      +
    220B  LYS*     2.9    36.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 217 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    213B  GLU*     2.9    40.9    +      -       -      +
    214B  VAL*     3.7     6.0    -      -       -      +
    216B  ILE*     1.3    81.1    -      -       -      +
    218B  ALA*     1.3    61.0    +      -       -      +
    220B  LYS*     3.9     7.0    -      -       -      +
    221B  GLY*     2.8    28.8    +      -       -      -
    253B  ILE*     4.8    11.7    -      -       +      -
    332B  ARG*     4.1    29.0    +      -       -      -
    334B  LEU*     4.3     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 218 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157B  VAL*     4.4     8.7    -      -       +      -
    190B  ILE*     4.0    15.5    -      -       +      -
    214B  VAL      2.7    22.1    +      -       -      +
    215B  LEU*     3.4     4.3    -      -       -      +
    217B  ASN*     1.3    74.2    -      -       -      +
    219B  VAL*     1.3    64.0    +      -       -      +
    222B  LEU*     3.0    24.4    +      -       -      +
    251B  ILE*     3.9    26.0    -      -       +      -
    253B  ILE*     4.9     1.1    -      -       -      +
    334B  LEU*     3.6    17.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 219 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     42B  VAL*     4.0    17.0    -      -       +      -
     52B  THR*     4.7     3.8    -      -       +      -
     56B  LEU*     3.6    26.9    -      -       +      -
    126B  PHE*     5.2     4.5    -      -       +      -
    128B  THR*     3.5    32.1    -      -       +      +
    157B  VAL*     3.9    17.9    -      -       +      -
    215B  LEU*     2.8    29.9    +      -       +      +
    216B  ILE      4.2     1.8    -      -       -      +
    218B  ALA*     1.3    72.8    -      -       -      +
    220B  LYS*     1.3    63.1    +      -       -      +
    222B  LEU*     3.9     4.2    -      -       -      +
    223B  VAL*     3.0    39.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 220 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56B  LEU*     4.0    12.5    -      -       +      +
     59B  GLU*     3.7    36.3    +      -       +      +
     60B  GLY      5.1     2.0    -      -       -      -
     61B  ILE*     3.6    30.1    -      -       +      +
    216B  ILE*     2.9    24.4    +      -       +      +
    217B  ASN*     3.9     7.6    -      -       -      +
    219B  VAL*     1.3    76.7    -      -       -      +
    221B  GLY*     1.3    58.2    +      -       -      +
    224B  GLU*     2.9    63.5    +      -       -      +
    324B  ASP*     5.3     6.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 221 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    217B  ASN      2.8    17.1    +      -       -      -
    220B  LYS*     1.3    72.9    -      -       -      +
    222B  LEU*     1.3    60.9    +      -       -      +
    224B  GLU*     5.0     0.2    -      -       -      -
    225B  LEU*     3.1     8.0    +      -       -      +
    288B  HIS*     2.8    32.5    +      -       -      -
    290B  MET*     5.0     9.9    -      -       -      -
    334B  LEU*     3.4    22.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 222 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    126B  PHE*     4.1    16.8    -      -       +      -
    155B  VAL*     4.8     0.4    -      -       +      -
    157B  VAL*     4.0    27.1    -      -       +      -
    188B  VAL*     4.5    15.5    -      -       +      -
    218B  ALA      3.0    16.4    +      -       -      +
    219B  VAL*     3.9     4.0    -      -       -      +
    221B  GLY*     1.3    74.0    -      -       -      +
    223B  VAL*     1.3    65.2    +      -       -      +
    225B  LEU*     3.4    19.8    +      -       +      +
    226B  ILE*     3.7    14.4    +      -       +      +
    243B  MET*     4.2    16.2    -      -       +      -
    251B  ILE*     6.1     0.9    -      -       +      -
    286B  LEU*     3.8    31.2    -      -       +      -
    334B  LEU*     3.5     4.7    -      -       +      +
    336B  VAL*     4.2    27.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 223 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     40B  ILE*     4.3     9.0    -      -       +      -
     42B  VAL*     3.9    13.9    -      -       +      -
     61B  ILE*     4.0    25.4    -      -       +      -
     62B  GLU      4.3     5.8    -      -       -      +
     64B  ALA*     4.0    19.3    -      -       +      -
    126B  PHE*     3.7    37.2    -      -       +      -
    219B  VAL*     3.0    22.2    +      -       +      +
    220B  LYS      4.0     2.0    -      -       -      +
    222B  LEU*     1.3    75.8    -      -       -      +
    224B  GLU*     1.3    59.3    +      -       -      +
    226B  ILE*     3.1     7.4    +      -       -      +
    227B  THR*     3.1    25.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 224 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60B  GLY      4.2     2.4    -      -       -      +
     61B  ILE*     3.6    13.7    -      -       +      -
     62B  GLU*     3.1    35.0    +      -       -      +
    220B  LYS*     2.9    51.6    +      -       -      +
    221B  GLY*     5.0     0.2    -      -       -      -
    223B  VAL*     1.3    68.5    -      -       -      +
    225B  LEU*     1.3    60.4    +      -       -      +
    226B  ILE      2.9     5.6    -      -       -      -
    227B  THR*     3.5     8.7    -      -       -      +
    228B  LYS*     2.7    57.5    +      -       +      +
    288B  HIS*     3.9    12.3    -      -       +      -
    322B  THR*     4.6     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 225 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221B  GLY      3.1    13.8    +      -       -      +
    222B  LEU*     3.4    13.0    -      -       +      +
    223B  VAL      3.2     0.4    -      -       -      -
    224B  GLU*     1.3    75.9    -      -       -      +
    226B  ILE*     1.3    60.2    +      -       +      +
    228B  LYS      5.0     1.6    -      -       -      +
    234B  VAL*     2.9    30.0    -      -       +      +
    286B  LEU*     4.1    34.8    -      -       +      -
    287B  ILE      3.3    27.4    -      -       -      +
    288B  HIS*     3.2    33.8    +      -       +      +
    318B  ILE*     4.8     9.4    -      -       +      -
    319B  TRP      4.0     2.5    -      -       -      -
    320B  GLY*     3.4    23.7    -      -       -      +
    322B  THR*     5.4     2.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 226 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  LYS*     4.3    12.1    -      -       +      +
     38B  ALA*     5.8     1.1    -      -       +      -
     40B  ILE*     5.0     6.7    -      -       +      -
    124B  MET*     3.9    19.7    -      -       +      -
    126B  PHE*     4.7     5.4    -      -       +      -
    222B  LEU*     3.8    14.1    -      -       +      +
    223B  VAL      3.1     7.3    +      -       -      +
    224B  GLU      2.9     0.4    -      -       -      -
    225B  LEU*     1.3    89.5    -      -       +      +
    227B  THR*     1.3    67.5    +      -       +      +
    228B  LYS      3.8     0.6    -      -       -      +
    234B  VAL*     4.2    18.7    -      -       +      +
    236B  PHE*     4.1    25.1    -      -       +      -
    239B  VAL*     3.3    43.1    -      -       +      -
    243B  MET*     5.2     3.6    -      -       +      -
    286B  LEU*     5.4     3.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  LYS*     3.0    32.9    +      -       +      +
     38B  ALA      5.6     1.1    -      -       -      +
     40B  ILE*     4.0    20.4    -      -       +      -
     62B  GLU*     2.5    42.9    +      -       -      +
     63B  GLY*     3.8    19.3    -      -       -      +
    223B  VAL*     3.1    20.4    +      -       +      +
    224B  GLU*     3.5     6.1    -      -       -      -
    226B  ILE*     1.3    84.2    -      -       +      +
    228B  LYS*     1.3    60.6    +      -       -      +
    229B  ASP*     3.8     0.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 228 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     37B  LYS*     5.4     0.4    -      -       -      -
     62B  GLU*     3.0    28.0    +      -       -      +
    224B  GLU*     2.7    53.4    +      -       +      +
    225B  LEU      5.0     3.3    -      -       -      +
    227B  THR*     1.3    73.9    +      -       -      +
    229B  ASP*     1.3    73.8    +      -       -      +
    230B  GLY      3.3     2.9    +      -       -      -
    234B  VAL*     5.2     6.1    -      -       -      +
    322B  THR*     3.8    28.9    +      -       +      +
    323B  ILE      3.3    29.0    +      -       -      +
    324B  ASP*     4.3    13.5    +      -       -      +
    325B  GLU      5.3     0.4    -      -       -      +
----------------------------------------------------------
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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