Contacts of the helix formed by residues 5236 - 5258 (chain b) in PDB entry 2AXT


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 THR5236 (chain b).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5135b  LEU*     6.4     0.2    -      -       +      -
   5229b  LEU*     3.6    18.0    +      -       -      +
   5230b  ARG      3.7    13.9    -      -       -      +
   5231b  MET*     4.3     6.1    -      -       -      -
   5233b  ASN      2.9    16.1    +      -       -      +
   5234b  ILE      2.7     2.8    +      -       -      -
   5235b  GLU*     1.3    75.9    -      -       -      +
   5237b  VAL*     1.3    76.1    +      -       +      +
   5238b  LEU      3.3     0.4    -      -       -      -
   5239b  SER*     3.9     6.6    +      -       -      -
   5240b  SER*     3.4    20.1    +      -       -      -
   5473b  THR*     3.5    18.0    -      -       -      +
   5518b  CLA      3.3    26.2    -      -       -      +
   5520b  CLA      4.5    14.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL5237 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5135b  LEU*     3.7    24.2    -      -       +      -
   5234b  ILE*     2.8    13.3    +      -       -      +
   5236b  THR*     1.3    82.5    -      -       +      +
   5238b  LEU*     1.3    64.1    +      -       -      +
   5240b  SER*     2.6    20.9    +      -       -      -
   5241b  SER*     2.9    19.3    +      -       -      +
   5520b  CLA      3.4    68.0    -      -       +      +
   5522b  CLA      3.5    19.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU5238 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5234b  ILE      3.5     0.8    +      -       -      -
   5235b  GLU*     4.3    13.0    -      -       +      +
   5236b  THR      3.3     0.4    -      -       -      -
   5237b  VAL*     1.3    80.3    -      -       -      +
   5239b  SER*     1.3    56.3    +      -       -      +
   5241b  SER*     3.9     1.6    -      -       -      -
   5242b  ILE*     3.0    39.8    +      -       +      +
   5469b  HIS*     3.5    44.2    -      -       +      +
   5521b  CLA      3.6    37.5    -      -       +      -
   5522b  CLA      3.4    59.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER5239 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5235b  GLU      3.5     8.6    +      -       -      -
   5236b  THR*     3.9     7.0    +      -       -      -
   5237b  VAL      3.3     0.4    -      -       -      -
   5238b  LEU*     1.3    74.8    -      -       -      +
   5240b  SER*     1.3    65.3    +      -       -      +
   5242b  ILE*     4.1     4.2    -      -       -      +
   5243b  ALA*     3.3     9.5    +      -       -      +
   5466b  HIS*     2.8    29.5    +      -       -      +
   5469b  HIS*     2.9    16.5    +      -       -      +
   5470b  GLY*     2.7    41.6    +      -       -      -
   5473b  THR*     3.8     0.2    +      -       -      -
   5518b  CLA      3.4    13.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER5240 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5236b  THR      3.5    11.4    +      -       -      -
   5237b  VAL*     2.6    29.3    +      -       -      +
   5239b  SER*     1.3    78.2    -      -       -      +
   5241b  SER*     1.3    63.6    +      -       -      +
   5243b  ALA*     3.3     8.1    +      -       -      +
   5244b  ALA*     3.3    18.4    +      -       -      +
   5518b  CLA      4.3    14.8    +      -       -      -
   5520b  CLA      3.4    54.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER5241 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5237b  VAL*     2.9    19.1    +      -       -      +
   5238b  LEU      3.9     1.8    -      -       -      -
   5240b  SER*     1.3    74.0    +      -       -      +
   5242b  ILE*     1.3    51.0    +      -       -      +
   5243b  ALA      2.9     4.5    -      -       -      -
   5244b  ALA*     2.7    12.1    +      -       -      +
   5245b  VAL*     2.6    37.3    +      -       -      +
   5520b  CLA      3.7    29.9    -      -       -      +
   5522b  CLA      3.0    40.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE5242 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5238b  LEU*     3.0    24.7    +      -       +      +
   5239b  SER      4.1     2.7    -      -       -      +
   5241b  SER*     1.3    75.5    -      -       -      +
   5243b  ALA*     1.3    56.5    +      -       -      +
   5245b  VAL*     3.9     8.9    -      -       -      +
   5246b  PHE*     3.2    26.5    +      -       -      +
   5462b  PHE*     3.0    33.8    -      -       +      +
   5465b  GLY      3.9     4.3    -      -       -      +
   5466b  HIS*     3.2    18.2    -      -       +      +
   5469b  HIS*     4.1    17.0    -      -       +      -
   5521b  CLA      3.5    59.5    -      -       +      -
   5522b  CLA      4.8     1.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA5243 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5239b  SER      3.3    17.4    +      -       -      +
   5240b  SER      3.4     7.0    -      -       -      +
   5241b  SER      2.9     1.0    -      -       -      -
   5242b  ILE*     1.3    78.3    -      -       -      +
   5244b  ALA*     1.3    62.5    +      -       -      +
   5246b  PHE*     3.5    12.6    -      -       -      -
   5247b  PHE      3.2    10.9    +      -       -      -
   5466b  HIS*     3.5    22.2    -      -       +      +
   5518b  CLA      3.1    45.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA5244 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5240b  SER      3.3     8.6    +      -       -      +
   5241b  SER      2.7    13.3    +      -       -      +
   5243b  ALA*     1.3    73.5    -      -       -      +
   5245b  VAL*     1.3    55.5    +      -       -      +
   5246b  PHE      3.1     0.2    -      -       -      -
   5247b  PHE*     2.8     9.4    +      -       -      +
   5248b  ALA*     2.7    35.6    +      -       -      +
   5513b  CLA      4.0    32.8    -      -       +      +
   5515b  CLA      5.9     0.4    -      -       +      -
   5520b  CLA      4.5    24.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL5245 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5241b  SER      2.6    20.7    +      -       -      +
   5242b  ILE*     4.1     4.9    -      -       -      +
   5244b  ALA*     1.3    73.8    -      -       -      +
   5246b  PHE*     1.3    58.5    +      -       -      +
   5248b  ALA*     3.7     6.4    -      -       -      +
   5249b  ALA*     3.0    24.8    +      -       -      +
   5462b  PHE*     3.8    23.6    -      -       +      -
   5514b  CLA      3.5    28.2    -      -       +      +
   5520b  CLA      4.7     5.2    -      -       +      +
   5521b  CLA      6.4     0.2    -      -       +      -
   5522b  CLA      3.5    53.2    -      -       +      +
   5523b  CLA      4.3     7.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE5246 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5242b  ILE      3.2    24.3    +      -       -      +
   5243b  ALA*     3.5    17.9    -      -       -      -
   5244b  ALA      3.1     0.6    -      -       -      -
   5245b  VAL*     1.3    76.2    -      -       -      +
   5247b  PHE*     1.3    64.1    +      -       -      +
   5249b  ALA*     3.5     8.0    -      -       -      +
   5250b  PHE*     3.1    46.3    +      +       -      -
   5459b  ALA*     3.7    19.1    -      -       -      +
   5462b  PHE*     3.8    12.6    -      -       +      -
   5463b  PHE*     3.8    39.5    -      +       -      -
   5466b  HIS*     4.1    11.4    -      +       +      -
   5512b  CLA      4.9     5.8    -      -       +      -
   5514b  CLA      4.6     1.1    -      -       -      -
   5518b  CLA      3.7    40.8    -      +       +      -
   5208h  DGD      4.9     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE5247 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5243b  ALA      3.2    11.6    +      -       -      +
   5244b  ALA*     2.8     9.8    +      -       -      +
   5246b  PHE*     1.3    84.5    -      -       -      +
   5248b  ALA*     1.3    66.1    +      -       -      +
   5250b  PHE*     3.3     4.4    +      -       -      +
   5251b  VAL*     3.0    33.1    +      -       +      +
   5512b  CLA      3.5    71.6    -      -       +      -
   5513b  CLA      3.7    72.5    -      -       +      -
   5518b  CLA      4.1    12.6    -      -       +      -
   5042h  LEU*     4.7    15.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA5248 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5244b  ALA      2.7    18.7    +      -       -      +
   5245b  VAL*     3.7     3.4    -      -       -      +
   5247b  PHE*     1.3    72.8    -      -       -      +
   5249b  ALA*     1.3    64.0    +      -       -      +
   5251b  VAL*     2.9    14.2    +      -       -      +
   5252b  VAL*     3.0    15.1    +      -       -      +
   5513b  CLA      4.0    34.7    -      -       +      +
   5514b  CLA      3.4    21.3    -      -       +      -
   5522b  CLA      3.9    14.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA5249 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5245b  VAL      3.0    15.8    +      -       -      +
   5246b  PHE      3.5     6.7    -      -       -      +
   5248b  ALA*     1.3    77.8    -      -       -      +
   5250b  PHE*     1.3    56.0    +      -       -      +
   5251b  VAL      2.7    11.8    +      -       -      -
   5252b  VAL*     2.8    30.1    +      -       +      +
   5253b  ALA*     2.9     9.6    +      -       -      +
   5455b  HIS*     4.1     6.9    -      -       +      +
   5459b  ALA*     3.8    10.5    -      -       +      -
   5514b  CLA      3.5    32.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE5250 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5246b  PHE*     3.1    37.0    +      +       -      +
   5247b  PHE*     3.3     5.4    +      -       -      +
   5249b  ALA*     1.3    77.9    -      -       -      +
   5251b  VAL*     1.3    59.5    +      -       -      +
   5253b  ALA*     4.0     5.4    -      -       +      +
   5254b  GLY      3.4    13.5    +      -       -      -
   5456b  ALA*     4.1    11.2    -      -       +      -
   5459b  ALA*     3.6    31.8    -      -       +      +
   5460b  LEU*     3.8    27.8    -      -       +      -
   5463b  PHE*     5.6     0.4    -      -       +      -
   5512b  CLA      3.6    59.0    -      -       +      -
   5159d  ILE*     3.8    13.5    -      -       +      -
   5208h  DGD      3.4    35.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL5251 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5247b  PHE*     3.0    40.4    -      -       +      +
   5248b  ALA      3.3     6.7    -      -       -      +
   5249b  ALA      2.7     5.3    +      -       -      -
   5250b  PHE*     1.3    76.0    -      -       -      +
   5252b  VAL*     1.3    58.5    +      -       -      +
   5253b  ALA      3.2     1.6    -      -       -      -
   5254b  GLY*     3.5     0.5    +      -       -      -
   5255b  THR*     3.1    27.4    +      -       +      +
   5512b  CLA      3.9    58.8    -      -       +      +
   5513b  CLA      4.1    18.2    -      -       +      -
   5208h  DGD      4.3     8.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL5252 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5248b  ALA      3.0    10.5    +      -       -      +
   5249b  ALA*     2.8    34.1    +      -       -      +
   5251b  VAL*     1.3    74.6    -      -       -      +
   5253b  ALA*     1.3    65.5    +      -       -      +
   5255b  THR*     3.3     8.8    +      -       -      +
   5256b  MET*     3.2    24.8    +      -       -      +
   5451b  PHE*     3.8     6.9    -      -       +      -
   5455b  HIS*     4.2    15.7    -      -       +      -
   5513b  CLA      3.3    26.5    -      -       +      +
   5514b  CLA      3.3    51.8    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA5253 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5249b  ALA      2.9    14.4    +      -       -      +
   5250b  PHE*     4.0     7.6    -      -       +      +
   5252b  VAL*     1.3    80.9    -      -       -      +
   5254b  GLY*     1.3    63.0    +      -       -      +
   5256b  MET*     3.4     3.0    +      -       -      -
   5257b  TRP*     3.1    18.2    +      -       -      +
   5451b  PHE*     4.7     0.7    -      -       -      -
   5452b  THR*     3.5    26.9    +      -       +      +
   5455b  HIS*     4.2     8.5    -      -       +      +
   5456b  ALA*     4.1    30.5    -      -       +      +
   5208h  DGD      5.3     5.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY5254 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5250b  PHE      3.4    13.7    +      -       -      -
   5251b  VAL      3.5     3.1    +      -       -      -
   5252b  VAL      3.3     0.2    -      -       -      -
   5253b  ALA*     1.3    76.6    -      -       -      +
   5255b  THR*     1.3    55.8    +      -       -      +
   5256b  MET      3.0     4.9    -      -       -      -
   5257b  TRP*     3.2     3.8    +      -       -      -
   5258b  TYR*     3.0    45.1    +      -       -      -
   5208h  DGD      4.2    24.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR5255 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5251b  VAL*     3.1    22.8    +      -       +      +
   5252b  VAL*     3.3    11.6    +      -       -      +
   5254b  GLY*     1.3    75.1    -      -       -      +
   5256b  MET*     1.3    59.1    +      -       -      +
   5258b  TYR      3.1     5.2    -      -       -      +
   5259b  GLY      2.8    25.0    -      -       -      +
   5260b  SER*     3.5    15.9    -      -       -      +
   5262b  THR*     5.2     6.5    -      -       -      +
   5263b  THR*     3.1    14.5    +      -       -      -
   5512b  CLA      4.0    31.2    -      -       -      +
   5513b  CLA      4.6     4.2    +      -       -      +
   5049h  TYR*     3.9    19.5    -      -       +      +
   5208h  DGD      5.5     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET5256 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5065b  PHE*     4.4     4.0    -      -       +      -
   5068b  ARG*     6.1     1.1    -      -       -      +
   5252b  VAL      3.2    19.3    +      -       -      +
   5253b  ALA      3.7     1.1    -      -       -      +
   5254b  GLY      3.0     0.6    -      -       -      -
   5255b  THR*     1.3    80.2    +      -       -      +
   5257b  TRP*     1.3    58.6    +      -       -      +
   5262b  THR*     5.7     0.9    -      -       +      +
   5263b  THR*     3.4    27.8    -      -       -      +
   5268b  PHE*     3.4    40.6    -      -       +      -
   5448b  ARG*     2.4    53.6    +      -       -      +
   5451b  PHE*     3.6    33.7    -      -       +      -
   5452b  THR*     3.1    20.0    -      -       -      +
   5514b  CLA      5.7     1.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP5257 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5253b  ALA      3.1    16.3    +      -       -      +
   5254b  GLY*     3.9     4.9    -      -       -      +
   5256b  MET*     1.3    75.6    -      -       -      +
   5258b  TYR*     1.3    68.2    +      +       +      +
   5271b  THR*     3.6    11.1    +      -       -      +
   5272b  ARG*     3.8    24.0    +      -       +      -
   5273b  TYR*     2.9    38.3    +      +       -      -
   5319b  PRO*     3.9    30.5    -      -       +      -
   5320b  ALA*     4.3     2.5    -      -       -      -
   5448b  ARG*     4.1     9.6    -      -       +      -
   5449b  GLY*     3.7    24.9    -      -       -      -
   5452b  THR*     3.5    18.1    +      -       +      -
   5162d  LEU      4.2     4.7    -      -       -      -
   5163d  GLY*     2.6    35.9    +      -       -      -
   5290d  ALA      4.6     0.2    -      -       -      -
   5291d  LEU*     3.5    45.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR5258 (chain b). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5193b  TYR*     4.9     2.0    -      -       -      +
   5254b  GLY*     3.0    29.5    +      -       -      +
   5255b  THR      3.1     8.3    -      -       -      +
   5256b  MET      3.3     5.4    -      -       -      +
   5257b  TRP*     1.3    86.4    -      +       +      +
   5259b  GLY*     1.3    69.6    +      -       -      +
   5271b  THR*     3.7     5.7    +      -       -      -
   5273b  TYR*     3.6    31.0    -      +       -      -
   5448b  ARG*     3.6     6.1    +      -       -      -
   5087d  HIS*     3.6    15.6    +      +       -      -
   5162d  LEU*     2.7    50.9    +      -       -      +
   5049h  TYR*     4.5     9.6    -      -       +      +
   5208h  DGD      3.5    69.1    +      -       +      +
----------------------------------------------------------
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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