Contacts of the helix formed by residues 206 - 230 (chain B) in PDB entry 1UAZ


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 GLY 206 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199B  THR*     4.9     1.6    -      -       -      -
    204B  VAL      4.3     0.8    +      -       -      -
    205B  VAL*     1.3    77.4    -      -       -      +
    207B  LEU*     1.3    67.9    +      -       -      -
    208B  GLY      2.9     4.9    +      -       -      -
    209B  ILE*     3.1    18.9    +      -       -      +
    210B  GLU*     3.2     8.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 207 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  ARG*     5.8     0.9    -      -       +      -
     14B  PRO*     6.3     1.6    -      -       +      -
     15B  GLU*     3.3    30.7    -      -       -      +
     83B  ASP*     4.4    28.3    -      -       +      +
     85B  TYR*     4.1    16.8    -      -       +      -
     88B  ARG*     5.0     2.7    -      -       -      +
    199B  THR*     3.8    26.1    -      -       +      +
    200B  GLU*     5.1     2.2    -      -       -      +
    205B  VAL      3.8     1.6    +      -       -      -
    206B  GLY*     1.3    70.8    -      -       -      -
    208B  GLY*     1.3    58.2    +      -       -      +
    210B  GLU*     3.6    23.6    -      -       +      +
    211B  THR*     2.8    47.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      3B  ALA*     5.8     1.6    -      -       -      +
      4B  VAL*     3.5    29.2    -      -       -      -
     14B  PRO*     5.3     6.8    -      -       -      +
     15B  GLU*     4.4    10.5    -      -       -      +
     18B  TRP*     3.3     9.0    -      -       -      -
    206B  GLY      2.9     1.8    +      -       -      -
    207B  LEU*     1.3    75.5    -      -       -      +
    209B  ILE*     1.3    64.8    +      -       -      +
    212B  LEU*     3.0    24.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 209 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4B  VAL*     3.2    37.6    -      -       +      +
    205B  VAL*     3.6    24.5    -      -       +      -
    206B  GLY*     3.1     8.8    +      -       -      +
    208B  GLY*     1.3    74.2    -      -       -      +
    210B  GLU*     1.3    54.6    +      -       -      +
    212B  LEU*     3.2    14.3    -      -       +      +
    213B  LEU*     2.7    53.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 210 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88B  ARG*     5.1     1.6    -      -       -      +
    194B  LEU*     3.8    28.3    -      -       +      +
    198B  GLY*     4.1     4.7    -      -       -      -
    199B  THR*     3.1    26.5    +      -       -      +
    200B  GLU*     2.5    30.2    -      -       -      +
    205B  VAL*     4.4     5.6    -      -       +      +
    206B  GLY      3.2     9.3    +      -       -      +
    207B  LEU*     3.6    25.9    -      -       +      +
    209B  ILE*     1.3    75.9    -      -       -      +
    211B  THR*     1.3    57.9    +      -       -      +
    213B  LEU*     3.1     2.3    +      -       -      +
    214B  PHE*     2.6    65.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 211 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15B  GLU*     3.8    22.8    -      -       +      +
     18B  TRP*     4.3     1.1    -      -       +      -
     19B  LEU*     3.6    46.4    -      -       +      +
     63B  TYR*     4.9     1.0    +      -       +      -
     85B  TYR*     4.8     1.0    -      -       +      -
     88B  ARG*     3.9    19.3    +      -       -      +
    207B  LEU*     2.8    31.1    +      -       -      +
    208B  GLY      4.0     0.7    -      -       -      -
    210B  GLU*     1.3    73.4    -      -       -      +
    212B  LEU*     1.3    63.8    +      -       -      +
    214B  PHE*     3.3     6.8    +      -       -      +
    215B  MET*     2.8    25.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 212 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      4B  VAL*     5.0     4.9    -      -       +      -
     18B  TRP*     3.6    58.9    -      -       +      +
    208B  GLY      3.0    15.2    +      -       -      +
    209B  ILE*     3.2    24.9    -      -       +      +
    211B  THR*     1.3    74.4    -      -       -      +
    213B  LEU*     1.3    74.8    +      -       +      +
    215B  MET*     2.8    19.5    +      -       +      +
    216B  VAL*     2.9    27.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 213 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    194B  LEU*     3.6    34.3    -      -       +      -
    205B  VAL*     5.5     1.6    -      -       +      -
    209B  ILE*     2.7    40.4    +      -       +      +
    210B  GLU      3.5     2.7    -      -       -      +
    212B  LEU*     1.3    79.4    -      -       +      +
    214B  PHE*     1.3    66.9    +      -       -      +
    216B  VAL*     2.7    23.1    +      -       +      +
    217B  LEU*     2.8    16.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 214 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63B  TYR*     4.0     2.0    -      -       -      -
     88B  ARG*     3.9    36.6    -      -       -      +
     92B  TRP*     3.6    18.6    -      +       -      -
    191B  TYR*     3.3    52.5    -      +       +      -
    194B  LEU*     3.8    19.9    -      -       +      +
    195B  TRP*     4.7    13.5    -      +       -      -
    200B  GLU*     4.7     4.5    -      -       -      -
    210B  GLU*     2.6    54.4    +      -       +      +
    211B  THR      3.5     4.7    -      -       -      +
    213B  LEU*     1.3    73.5    -      -       -      +
    215B  MET*     1.3    51.4    +      -       -      +
    217B  LEU*     3.1     7.3    +      -       +      +
    218B  ASP*     2.6    40.1    +      -       -      +
    255B  RET      4.8     0.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 215 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18B  TRP*     3.8    25.6    -      -       +      +
     21B  ILE*     3.5    39.7    -      -       +      -
     22B  GLY*     3.4    25.6    -      -       -      +
     25B  LEU*     4.0     6.5    -      -       +      -
     63B  TYR*     3.1    23.7    +      -       +      +
    211B  THR*     2.8    16.7    +      -       +      +
    212B  LEU*     2.8    15.4    +      -       +      +
    214B  PHE*     1.3    72.9    -      -       -      +
    216B  VAL*     1.3    69.4    +      -       +      +
    219B  VAL*     2.8    48.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 216 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    212B  LEU*     2.9    33.5    +      -       +      +
    213B  LEU*     2.7    18.8    +      -       +      +
    215B  MET*     1.3    79.7    -      -       +      +
    217B  LEU*     1.3    64.1    +      -       +      +
    219B  VAL*     4.1     2.7    -      -       -      +
    220B  THR*     2.6    39.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 217 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    187B  LEU*     4.1    34.0    -      -       +      +
    190B  ALA*     4.1    21.3    -      -       +      +
    191B  TYR*     3.8    39.9    -      -       +      +
    194B  LEU*     4.8     8.5    -      -       +      -
    213B  LEU*     2.8    14.9    +      -       +      +
    214B  PHE*     3.3    17.9    -      -       +      +
    216B  VAL*     1.3    79.3    -      -       +      +
    218B  ASP*     1.3    55.1    +      -       -      +
    220B  THR*     2.9     7.6    +      -       -      -
    221B  ALA*     2.7    35.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 218 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26B  MET*     3.6    13.9    -      -       +      -
     63B  TYR*     2.5    34.4    +      -       -      +
     88B  ARG*     5.1     2.9    +      -       -      +
     91B  ASP*     4.9     0.2    -      -       -      -
     92B  TRP*     3.3    28.7    +      -       -      -
    191B  TYR*     2.8    20.7    +      -       -      -
    214B  PHE*     2.6    22.7    +      -       -      +
    215B  MET      3.5     4.5    -      -       -      +
    217B  LEU*     1.3    71.8    -      -       -      +
    219B  VAL*     1.3    65.6    +      -       -      +
    221B  ALA*     3.2     1.4    +      -       -      -
    222B  LYS*     2.8    41.5    +      -       -      +
    255B  RET      4.8     0.4    -      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
     22B  GLY*     4.8     1.1    -      -       -      -
     25B  LEU*     3.7    45.3    -      -       +      -
     26B  MET*     3.7    20.2    -      -       +      +
    215B  MET*     2.8    34.2    +      -       +      +
    216B  VAL*     4.1     4.3    -      -       -      +
    218B  ASP*     1.3    71.6    -      -       -      +
    220B  THR*     1.3    59.9    +      -       -      +
    223B  VAL*     2.8    41.7    +      -       +      -
    224B  GLY      3.2     4.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 220 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183B  LEU*     4.0    13.7    -      -       +      +
    187B  LEU*     3.7    24.7    -      -       +      -
    216B  VAL*     2.6    26.6    +      -       -      +
    217B  LEU*     2.9     8.1    +      -       -      -
    219B  VAL*     1.3    77.4    -      -       -      +
    221B  ALA*     1.3    67.7    +      -       -      +
    222B  LYS      3.1     0.2    -      -       -      -
    224B  GLY*     3.3     9.9    +      -       -      +
    225B  PHE      3.1    20.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 221 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     99B  LEU*     3.1    17.0    -      -       -      +
    183B  LEU*     5.0     0.9    -      -       -      -
    187B  LEU*     3.5    23.3    -      -       +      +
    188B  TRP*     4.9     4.7    +      -       +      +
    191B  TYR*     4.0     9.9    -      -       +      +
    217B  LEU      2.7    19.3    +      -       -      +
    218B  ASP*     3.6     4.0    -      -       -      +
    220B  THR*     1.3    74.0    -      -       -      +
    222B  LYS*     1.3    59.1    +      -       -      +
    225B  PHE*     3.0    19.8    -      -       -      +
    255B  RET      3.7    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 222 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26B  MET*     3.9    14.6    -      -       +      -
     33B  PHE*     4.8     2.8    -      -       -      -
     52B  THR*     5.5     0.7    -      -       -      +
     55B  VAL*     3.4    21.7    -      -       +      +
     56B  PRO*     4.9     6.4    -      -       +      +
     59B  ALA*     3.8    21.5    -      -       +      -
     91B  ASP*     3.7    14.8    +      -       -      -
     92B  TRP*     4.0     1.0    -      -       -      -
     95B  THR*     3.5    27.3    +      -       -      -
     99B  LEU*     4.5     6.1    -      -       +      +
    218B  ASP*     2.8    23.0    +      -       -      +
    219B  VAL      4.2     0.4    -      -       -      +
    220B  THR      3.1     0.8    -      -       -      -
    221B  ALA*     1.3    77.6    -      -       -      +
    223B  VAL*     1.3    69.8    +      -       +      +
    224B  GLY      3.3     0.4    -      -       -      -
    225B  PHE*     3.2     5.3    +      -       -      +
    226B  GLY*     3.0    19.4    +      -       -      -
    255B  RET      1.4    72.3    -      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
     25B  LEU      4.1    11.9    -      -       -      +
     26B  MET*     4.3    16.8    -      -       -      -
     29B  GLY*     4.0    31.4    -      -       -      -
     32B  TYR*     6.4     0.2    -      -       +      -
     33B  PHE*     3.6    16.3    -      -       +      -
     56B  PRO*     4.4    11.0    -      -       +      -
    219B  VAL*     2.8    26.6    +      -       +      +
    222B  LYS*     1.3    76.7    -      -       -      +
    224B  GLY*     1.3    59.2    +      -       -      +
    226B  GLY      3.2     0.3    +      -       -      -
    227B  PHE*     2.8    30.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 224 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    183B  LEU*     4.6     3.6    -      -       -      -
    219B  VAL      3.2     8.1    +      -       -      -
    220B  THR*     3.3    15.6    +      -       -      -
    223B  VAL*     1.3    79.7    -      -       -      +
    225B  PHE*     1.3    61.2    +      -       -      +
    227B  PHE*     3.4     9.6    +      -       -      +
    228B  ILE*     3.0    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 225 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52B  THR*     5.3     0.9    -      -       +      -
     99B  LEU*     3.4    54.1    -      -       +      -
    102B  ASP*     3.7    22.0    -      -       +      -
    103B  LEU*     3.7    21.1    -      -       +      -
    180B  LEU*     3.1    61.8    -      -       +      +
    183B  LEU*     4.1    14.8    -      -       +      +
    184B  VAL*     5.3     5.6    -      -       +      -
    220B  THR      3.1     6.6    +      -       -      +
    221B  ALA      3.0    24.2    -      -       -      +
    222B  LYS      3.2     2.4    +      -       -      +
    224B  GLY*     1.3    74.3    -      -       -      +
    226B  GLY*     1.3    62.5    +      -       -      +
    228B  ILE      3.2     1.6    +      -       -      -
    229B  LEU*     2.9    26.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 226 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  PHE*     3.8     9.6    -      -       -      -
     52B  THR*     3.7    29.2    -      -       -      -
    222B  LYS      3.0     8.2    +      -       -      -
    223B  VAL      3.7     2.5    -      -       -      -
    225B  PHE*     1.3    79.5    -      -       -      +
    227B  PHE*     1.3    56.2    +      -       -      +
    229B  LEU*     2.7    10.8    +      -       -      -
    230B  LEU*     2.6    34.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32B  TYR*     4.7    18.4    -      +       +      -
     33B  PHE*     3.7    11.8    -      -       +      -
     36B  LYS*     4.5    15.4    +      -       -      +
    223B  VAL*     2.8    23.9    +      -       +      +
    224B  GLY*     3.7     8.7    -      -       -      +
    226B  GLY*     1.3    71.8    -      -       -      +
    228B  ILE*     1.3    74.6    +      -       +      +
    230B  LEU*     5.2     2.5    -      -       -      -
    231B  ARG*     3.1    32.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 228 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176B  THR*     5.0     3.8    -      -       +      +
    179B  THR*     4.3    24.2    -      -       +      -
    180B  LEU*     3.4    24.0    -      -       +      -
    183B  LEU*     5.2     7.6    -      -       +      -
    224B  GLY*     3.0    18.2    -      -       -      +
    225B  PHE*     3.5     1.3    -      -       -      +
    226B  GLY      3.0     0.6    -      -       -      -
    227B  PHE*     1.3    92.5    -      -       +      +
    229B  LEU*     1.3    63.2    +      -       -      +
    231B  ARG*     3.8     3.1    -      -       -      +
    232B  SER*     3.3    20.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48B  TYR*     4.3    12.6    -      -       +      -
     52B  THR*     3.2    14.8    -      -       +      +
    102B  ASP*     3.1    41.3    -      -       +      +
    106B  LEU*     4.4    13.7    -      -       +      -
    176B  THR*     4.7     0.2    -      -       +      -
    180B  LEU*     3.7    25.5    -      -       +      +
    225B  PHE*     2.9    20.6    +      -       +      +
    226B  GLY*     2.7    12.4    +      -       -      +
    228B  ILE*     1.3    68.7    -      -       -      +
    230B  LEU*     1.3    65.1    +      -       +      +
    231B  ARG      2.9     9.3    +      -       -      -
    232B  SER*     2.7    31.4    +      -       -      +
    235B  ILE*     3.3    20.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 230 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  PHE*     3.6    35.2    -      -       +      -
     36B  LYS*     4.5    13.0    +      -       -      +
     48B  TYR*     4.4     8.7    -      -       +      -
     49B  TYR*     3.4    50.3    +      -       +      +
     52B  THR*     3.5    44.9    -      -       +      +
    226B  GLY      2.6    14.7    +      -       -      +
    227B  PHE*     5.2     0.4    -      -       -      +
    229B  LEU*     1.3    85.3    -      -       +      +
    231B  ARG*     1.3    55.6    +      -       -      -
    235B  ILE*     3.4    22.4    -      -       -      +
----------------------------------------------------------
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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