Contacts of the helix formed by residues 220 - 243 (chain B) in PDB entry 6E8Z


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 220 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155A  GLU*     4.3    15.2    +      -       -      -
    160A  LYS*     5.9     3.0    -      -       -      +
    218B  GLY      4.1     0.2    +      -       -      -
    219B  PHE*     1.3    78.6    -      -       -      +
    221B  ASP*     1.3    60.4    +      -       -      -
    222B  ASN      3.3     2.9    -      -       -      -
    223B  THR*     3.3     7.7    +      -       -      -
    224B  LYS*     3.0    27.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 221 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155A  GLU*     4.8     2.2    +      -       -      -
    263A  THR*     3.6    20.3    +      -       -      +
    266A  TYR*     4.4    20.4    -      -       -      +
    267A  GLY*     4.8     6.2    -      -       -      +
    220B  GLY*     1.3    69.5    -      -       -      -
    222B  ASN*     1.3    60.8    +      -       -      +
    224B  LYS*     3.8     9.4    -      -       -      +
    225B  ALA*     2.8    30.5    +      -       -      +
    266B  TYR*     3.9    27.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN 222 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150A  ALA*     3.4    32.1    -      -       -      +
    151A  ASN*     3.9     1.4    +      -       -      -
    152A  ILE*     3.5    36.4    -      -       -      +
    155A  GLU*     3.3    24.9    +      -       -      +
    161A  PHE      4.5     2.0    -      -       -      -
    162A  CYS*     4.4     8.3    -      -       +      +
    263A  THR*     2.8    34.1    +      -       -      +
    405A  EDO      4.4     2.3    -      -       -      -
    220B  GLY      3.3     0.8    -      -       -      -
    221B  ASP*     1.3    78.4    -      -       -      +
    223B  THR*     1.3    62.4    +      -       -      +
    225B  ALA*     3.4     5.2    +      -       -      +
    226B  ALA*     3.1    21.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 223 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155A  GLU*     4.7     4.7    +      -       -      -
    160A  LYS*     4.5     5.2    -      -       -      +
    161A  PHE*     2.7    37.1    +      -       +      +
    214B  CYS*     3.8    13.5    -      -       -      -
    219B  PHE*     3.7    32.5    -      -       +      +
    220B  GLY      3.3    11.4    +      -       -      -
    222B  ASN*     1.3    79.1    -      -       -      +
    224B  LYS*     1.3    63.1    +      -       -      +
    226B  ALA*     3.0     6.4    +      -       -      +
    227B  VAL*     2.9    21.1    +      -       -      +
    339B  ILE*     4.1    17.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 224 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    211B  ALA*     4.1    16.2    -      -       +      +
    214B  CYS*     3.5    18.3    -      -       +      -
    215B  ASP*     2.9    40.9    +      -       -      +
    220B  GLY      3.0    16.5    +      -       -      +
    221B  ASP*     3.8    11.0    -      -       -      +
    223B  THR*     1.3    76.9    -      -       -      +
    225B  ALA*     1.3    58.1    +      -       -      +
    227B  VAL*     3.2     3.6    +      -       -      +
    228B  ILE*     3.0    44.6    +      -       +      +
    265B  CYS      3.2    27.8    +      -       -      -
    266B  TYR*     3.8    34.0    +      -       +      +
    271B  ARG*     3.9     3.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 225 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150A  ALA*     4.3     7.4    -      -       +      -
    259A  ALA*     3.9    33.2    -      -       +      +
    262A  ILE*     4.2    19.5    -      -       +      +
    263A  THR*     4.3     4.3    -      -       -      -
    221B  ASP      2.8    18.1    +      -       -      +
    222B  ASN*     3.6     5.8    -      -       -      +
    223B  THR      3.2     0.2    -      -       -      -
    224B  LYS*     1.3    77.4    -      -       -      +
    226B  ALA*     1.3    57.1    +      -       -      +
    228B  ILE*     3.5     3.1    +      -       -      +
    229B  ARG*     3.0    30.5    +      -       -      +
    266B  TYR*     4.7     2.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 226 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150A  ALA*     5.7     0.2    -      -       -      +
    161A  PHE*     3.9    20.4    -      -       +      -
    162A  CYS*     4.4     4.0    -      -       -      -
    163A  GLU*     3.5    35.9    -      -       +      +
    259A  ALA*     5.0     0.8    -      -       -      +
    222B  ASN      3.1    12.2    +      -       -      +
    223B  THR      3.0    10.1    +      -       -      +
    225B  ALA*     1.3    74.3    -      -       -      +
    227B  VAL*     1.3    65.8    +      -       -      +
    229B  ARG*     3.3     0.7    +      -       -      +
    230B  LEU*     2.9    32.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161A  PHE*     5.5     0.9    -      -       +      -
    207B  VAL*     4.2     3.8    -      -       +      +
    210B  GLY*     4.0    27.8    -      -       -      +
    211B  ALA*     4.0     7.9    -      -       -      +
    214B  CYS*     4.3    11.0    -      -       +      -
    223B  THR*     2.9    19.2    +      -       +      +
    224B  LYS*     3.2     9.2    +      -       -      +
    226B  ALA*     1.3    75.1    -      -       +      +
    228B  ILE*     1.3    58.4    +      -       -      +
    230B  LEU*     4.8     0.2    -      -       -      -
    231B  GLY*     2.8    25.1    +      -       -      -
    321B  LEU*     3.3    20.1    -      -       +      +
    338B  PHE*     4.0    15.5    -      -       +      -
    339B  ILE*     4.2    18.4    -      -       +      -
    342B  LEU*     3.9    22.0    -      -       +      -
----------------------------------------------------------
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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
----------------------------------------------------------
    262A  ILE*     4.2    16.6    -      -       +      -
    207B  VAL*     4.0     6.5    -      -       +      -
    211B  ALA*     4.4     8.5    -      -       +      -
    224B  LYS*     3.0    29.2    +      -       +      +
    225B  ALA      3.8     3.6    -      -       -      +
    227B  VAL*     1.3    77.5    -      -       -      +
    229B  ARG*     1.3    58.8    +      -       -      +
    231B  GLY*     3.1     2.4    +      -       -      -
    232B  LEU*     2.8    27.4    +      -       -      +
    261B  LEU*     3.6    29.8    -      -       +      +
    262B  ILE*     4.6     7.0    -      -       +      -
    265B  CYS*     3.7    26.9    -      -       +      -
    266B  TYR*     3.5    34.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163A  GLU*     2.6    41.0    +      -       -      +
    189A  THR*     4.2     5.3    +      -       -      -
    253A  LEU      2.9    30.4    +      -       -      +
    254A  GLU*     3.4    40.1    +      -       -      +
    255A  SER*     3.4    10.7    -      -       -      +
    258A  VAL*     4.0    13.5    -      -       +      -
    259A  ALA*     4.0     8.3    -      -       +      -
    262A  ILE*     6.2     0.9    -      -       +      -
    225B  ALA      3.0    18.9    +      -       -      +
    226B  ALA      3.8     2.2    -      -       -      +
    228B  ILE*     1.3    78.6    -      -       -      +
    230B  LEU*     1.3    71.1    +      -       -      +
    232B  LEU*     3.0     9.1    +      -       +      +
    233B  MET*     2.9    54.8    +      -       +      +
    347B  GLU*     4.3     9.5    +      -       -      +
    348B  HIS*     4.0     7.1    +      -       -      -
----------------------------------------------------------
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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
----------------------------------------------------------
    161A  PHE*     4.5     9.0    -      -       +      -
    163A  GLU*     3.6    20.0    -      -       -      +
    226B  ALA      2.9    22.6    +      -       -      +
    227B  VAL      3.9     2.9    -      -       -      +
    229B  ARG*     1.3    84.6    -      -       -      +
    231B  GLY*     1.3    66.4    +      -       -      +
    233B  MET*     3.3     4.0    +      -       -      +
    234B  GLU*     2.9    26.9    +      -       -      +
    321B  LEU*     4.1    10.1    -      -       +      -
    342B  LEU*     4.4    24.2    -      -       +      -
    345B  HIS*     4.0    24.1    +      -       +      +
    347B  GLU*     4.0    18.2    -      -       +      -
    348B  HIS*     4.0    22.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 231 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    207B  VAL*     3.6    26.0    -      -       -      +
    227B  VAL      2.8    16.6    +      -       -      -
    228B  ILE      3.4     4.3    -      -       -      -
    230B  LEU*     1.3    74.8    -      -       -      +
    232B  LEU*     1.3    56.3    +      -       -      +
    234B  GLU*     3.1     7.8    +      -       -      +
    235B  MET*     2.8    31.2    +      -       -      +
    321B  LEU*     3.4    11.9    -      -       -      +
    322B  PHE*     5.1     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 232 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253A  LEU*     4.0    26.7    -      -       +      -
    258A  VAL*     4.9    12.6    -      -       +      -
    228B  ILE      2.8    16.3    +      -       -      +
    229B  ARG*     3.0    10.1    +      -       -      +
    231B  GLY*     1.3    74.7    -      -       -      +
    233B  MET*     1.3    66.7    +      -       +      +
    235B  MET*     3.0    17.9    +      -       +      +
    236B  ILE*     2.9    34.4    +      -       +      +
    252B  PHE*     4.1    33.9    -      -       +      +
    257B  GLY      5.0     0.4    -      -       -      -
    258B  VAL*     4.8    22.9    -      -       +      +
    261B  LEU*     3.9    19.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 233 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253A  LEU*     3.7    31.4    -      -       +      +
    254A  GLU*     5.4     3.4    -      -       -      +
    229B  ARG*     2.9    42.9    +      -       +      +
    230B  LEU*     3.6     6.5    -      -       -      +
    232B  LEU*     1.3    87.3    -      -       +      +
    234B  GLU*     1.3    57.0    +      -       -      +
    236B  ILE*     3.2    28.1    +      -       +      +
    237B  ALA*     2.9    31.0    +      -       -      +
    345B  HIS*     5.3     0.2    -      -       +      -
    347B  GLU*     3.7    39.0    -      -       +      +
    403B  EDO      4.0     4.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 234 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230B  LEU      2.9    18.2    +      -       -      +
    231B  GLY*     3.5     5.6    -      -       -      +
    233B  MET*     1.3    75.3    -      -       -      +
    235B  MET*     1.3    57.0    +      -       -      +
    238B  PHE*     2.8    33.4    +      -       -      +
    319B  PHE*     3.5    19.5    -      -       +      -
    320B  PRO*     3.1     3.3    -      -       -      +
    321B  LEU*     2.7    31.5    +      -       -      +
    322B  PHE*     2.8    46.2    +      -       +      -
    345B  HIS*     2.8    28.0    +      -       +      +
    403B  EDO      3.9    18.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with MET 235 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    200B  CYS*     4.2    42.4    -      -       +      +
    203B  LEU*     3.7    26.4    -      -       +      +
    204B  LYS*     4.0    17.5    -      -       +      +
    207B  VAL*     4.0    18.8    -      -       +      -
    231B  GLY      2.8    20.5    +      -       -      +
    232B  LEU*     3.0    24.7    +      -       +      +
    234B  GLU*     1.3    75.3    -      -       -      +
    236B  ILE*     1.3    56.0    +      -       -      +
    238B  PHE*     3.9     1.0    -      -       -      +
    239B  ALA*     2.9    31.0    +      -       -      +
    252B  PHE*     4.1     6.1    -      -       +      -
    257B  GLY*     5.2     5.8    -      -       -      +
    261B  LEU*     4.1    12.3    -      -       +      -
    322B  PHE*     3.8    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 236 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253A  LEU*     3.6    30.5    -      -       +      -
    232B  LEU*     2.9    16.3    +      -       +      +
    233B  MET*     3.6    24.0    -      -       +      +
    235B  MET*     1.3    73.2    -      -       -      +
    237B  ALA*     1.3    67.1    +      -       -      +
    239B  ALA*     3.2     3.1    +      -       -      +
    240B  LYS*     2.9    52.8    +      -       +      +
    249B  SER*     3.6    11.4    -      -       -      +
    252B  PHE*     3.5    47.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 237 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233B  MET      2.9    19.0    +      -       -      +
    236B  ILE*     1.3    74.6    -      -       -      +
    238B  PHE*     1.3    63.8    +      -       -      +
    240B  LYS*     3.2    10.4    +      -       -      +
    241B  LEU*     3.2    23.2    +      -       -      +
    319B  PHE*     4.1     9.8    -      -       +      -
    403B  EDO      3.8    27.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 238 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    129B  LEU*     4.8     4.7    -      -       +      -
    199B  ILE*     5.0     3.6    -      -       +      -
    203B  LEU*     4.0    19.5    -      -       +      -
    234B  GLU      2.8    19.5    +      -       -      +
    235B  MET      4.0     2.5    -      -       -      +
    237B  ALA*     1.3    77.1    -      -       -      +
    239B  ALA*     1.3    59.2    +      -       -      +
    241B  LEU*     3.2    19.3    +      -       +      +
    242B  PHE*     3.0    64.0    +      +       +      +
    306B  LEU*     3.3    33.9    -      -       +      -
    309B  ILE*     4.3    16.4    -      -       +      -
    310B  LEU*     4.0    28.5    -      -       +      -
    319B  PHE*     3.6    15.4    -      +       +      -
    322B  PHE*     4.1     8.3    -      +       +      -
----------------------------------------------------------
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Residues in contact with ALA 239 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    196B  THR*     5.2     0.7    -      -       +      -
    199B  ILE*     3.9    21.5    -      -       +      -
    203B  LEU*     5.0     0.4    -      -       +      -
    235B  MET      2.9    18.5    +      -       -      +
    236B  ILE      3.7     4.0    -      -       -      +
    238B  PHE*     1.3    82.1    -      -       -      +
    240B  LYS*     1.3    62.5    +      -       -      +
    243B  CYS*     3.1    37.5    +      -       -      +
    247B  VAL*     3.7    12.3    -      -       +      +
    252B  PHE*     3.9    19.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 240 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236B  ILE*     2.9    32.8    +      -       +      +
    237B  ALA*     3.7     8.5    -      -       -      +
    238B  PHE      3.2     0.4    -      -       -      -
    239B  ALA*     1.3    77.9    -      -       -      +
    241B  LEU*     1.3    59.3    +      -       -      +
    243B  CYS      4.6     5.9    -      -       -      +
    247B  VAL*     3.7    38.5    -      -       +      +
    248B  SER*     4.9     0.2    -      -       -      +
    249B  SER*     2.9    31.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 241 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237B  ALA      3.2    11.4    +      -       -      +
    238B  PHE*     3.2    25.0    +      -       +      +
    240B  LYS*     1.3    78.9    -      -       -      +
    242B  PHE*     1.3    72.1    +      -       +      +
    243B  CYS      5.3     0.7    -      -       -      -
    309B  ILE*     5.3     2.2    -      -       +      -
    310B  LEU*     4.2     7.0    -      -       +      -
    313B  LYS*     4.7    25.1    +      -       -      +
    315B  LEU*     3.7    28.9    -      -       +      -
    319B  PHE*     4.1    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 242 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    128B  GLY      5.1     1.6    -      -       -      -
    129B  LEU*     3.7    32.3    -      -       +      -
    130B  LYS*     5.1     0.7    -      -       -      -
    131B  LEU*     5.2     0.9    -      -       +      -
    199B  ILE*     4.1    14.4    -      -       +      -
    238B  PHE*     3.0    36.1    +      +       +      +
    239B  ALA*     4.7     0.7    -      -       -      +
    241B  LEU*     1.3    85.1    -      -       +      +
    243B  CYS*     1.3    75.4    +      -       -      +
    244B  SER      3.8     0.2    +      -       -      -
    309B  ILE*     3.7    35.2    -      -       +      -
    313B  LYS*     6.0     2.0    -      -       -      +
    402B  PO4      3.2    41.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with CYS 243 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131B  LEU*     5.4     1.1    -      -       -      -
    195B  ASP*     3.9    26.9    -      -       +      -
    199B  ILE*     4.1    26.5    -      -       -      -
    239B  ALA*     3.1    31.8    +      -       -      +
    240B  LYS      4.6     6.6    -      -       -      +
    241B  LEU      5.3     0.2    -      -       -      -
    242B  PHE*     1.3    93.7    -      -       -      +
    244B  SER*     1.3    65.2    +      -       -      +
    245B  GLY      3.5     4.4    -      -       -      +
    247B  VAL*     4.0    11.4    -      -       +      +
    402B  PO4      3.7     7.2    -      -       -      -
----------------------------------------------------------
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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