Contacts of the helix formed by residues 5034 - 5062 (chain z) 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 ASP5034 (chain z).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5032z  ASP*     2.9     3.3    -      -       -      -
   5033z  TRP*     1.3    80.4    -      -       -      +
   5035z  ARG*     1.3    65.0    +      -       -      +
   5037z  LYS*     3.3    17.2    -      -       -      +
   5038z  GLN*     3.8     5.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG5035 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5032z  ASP*     3.4    20.8    +      -       +      +
   5034z  ASP*     1.3    77.3    -      -       -      +
   5036z  SER*     1.3    58.4    +      -       -      +
   5038z  GLN*     3.0    24.1    +      -       -      +
   5039z  LEU*     3.2    21.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER5036 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5026z  ALA*     4.0    29.2    -      -       -      -
   5032z  ASP      3.5    11.5    +      -       -      -
   5033z  TRP*     5.0     4.7    -      -       -      -
   5034z  ASP      3.5     0.2    -      -       -      -
   5035z  ARG*     1.3    76.7    -      -       -      +
   5037z  LYS*     1.3    60.8    +      -       -      +
   5039z  LEU*     3.2    22.1    -      -       -      +
   5040z  ILE*     2.6    40.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS5037 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5033z  TRP      3.6    18.0    +      -       -      +
   5034z  ASP*     3.3    16.9    -      -       -      +
   5036z  SER*     1.3    77.3    -      -       -      +
   5038z  GLN*     1.3    63.9    +      -       -      +
   5040z  ILE*     4.3     5.9    -      -       -      +
   5041z  PHE*     3.4    17.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN5038 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5034z  ASP      3.8     4.4    +      -       -      +
   5035z  ARG*     3.0    12.6    +      -       -      +
   5037z  LYS*     1.3    76.4    -      -       -      +
   5039z  LEU*     1.3    66.4    +      -       +      +
   5041z  PHE*     2.8    20.8    +      -       -      +
   5042z  LEU*     3.1    10.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU5039 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5035z  ARG*     3.5    13.2    -      -       +      +
   5036z  SER*     3.2    32.5    -      -       -      +
   5038z  GLN*     1.3    78.8    -      -       +      +
   5040z  ILE*     1.3    57.4    +      -       +      +
   5042z  LEU*     2.8    45.0    +      -       +      +
   5043z  GLY*     3.0     5.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE5040 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5127c  PHE*     4.1    20.0    -      -       +      -
   5019z  MET*     4.4     5.4    -      -       +      +
   5023z  VAL*     4.1    23.3    -      -       +      +
   5026z  ALA*     3.5    31.9    -      -       +      -
   5027z  TYR*     4.6    19.7    -      -       +      +
   5036z  SER*     2.6    28.7    +      -       -      +
   5037z  LYS*     4.3     4.9    -      -       -      +
   5039z  LEU*     1.3    73.6    -      -       +      +
   5041z  PHE*     1.3    58.8    +      -       -      +
   5042z  LEU      3.2     0.3    +      -       -      -
   5043z  GLY*     3.2     2.8    +      -       -      +
   5044z  SER*     2.9    43.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE5041 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5037z  LYS      3.4    12.5    +      -       -      +
   5038z  GLN*     2.8    17.6    +      -       -      +
   5040z  ILE*     1.3    76.9    -      -       -      +
   5042z  LEU*     1.3    63.2    +      -       -      +
   5044z  SER*     4.1     6.7    -      -       -      -
   5045z  GLY*     3.2    24.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU5042 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5015z  LEU*     6.2     0.2    -      -       +      -
   5038z  GLN      3.1     6.4    +      -       -      +
   5039z  LEU*     2.8    27.0    +      -       +      +
   5041z  PHE*     1.3    78.3    -      -       -      +
   5043z  GLY*     1.3    67.0    +      -       -      +
   5044z  SER      3.3     0.3    +      -       -      -
   5046z  LEU*     2.8    53.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY5043 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5015z  LEU*     4.1    11.3    -      -       -      +
   5019z  MET*     3.3    29.6    -      -       -      -
   5039z  LEU      3.0     7.6    +      -       -      -
   5040z  ILE      3.2     1.3    +      -       -      -
   5042z  LEU*     1.3    83.0    -      -       -      +
   5044z  SER*     1.3    53.0    +      -       -      +
   5046z  LEU*     4.3     1.1    -      -       -      -
   5047z  TRP*     2.6    39.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER5044 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5127c  PHE*     4.0    24.3    -      -       -      -
   5019z  MET*     3.7     7.7    -      -       -      +
   5040z  ILE*     2.9    26.4    +      -       -      +
   5041z  PHE*     4.0     8.7    -      -       -      -
   5043z  GLY*     1.3    72.1    -      -       -      +
   5045z  GLY*     1.3    69.1    +      -       -      +
   5047z  TRP*     3.5     4.6    -      -       -      +
   5048z  ILE*     3.1    27.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY5045 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5041z  PHE*     3.2    17.3    +      -       -      -
   5042z  LEU      3.9     0.9    -      -       -      -
   5044z  SER*     1.3    80.7    -      -       -      +
   5046z  LEU*     1.3    63.8    +      -       -      +
   5048z  ILE*     3.1    10.3    +      -       -      +
   5049z  ALA*     3.0    22.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU5046 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5015z  LEU*     3.4    30.5    -      -       +      -
   5042z  LEU*     2.8    47.9    +      -       +      +
   5043z  GLY      3.7     0.9    -      -       -      +
   5045z  GLY*     1.3    71.1    -      -       -      +
   5047z  TRP*     1.3    62.1    +      -       -      +
   5049z  ALA*     3.2    11.4    +      -       +      +
   5050z  LEU*     2.8    34.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with TRP5047 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5120c  ILE*     3.6    27.4    -      -       +      -
   5123c  ALA*     3.5    33.4    -      -       +      -
   5124c  VAL*     5.3     7.4    -      -       +      -
   5504c  BCR      4.3    16.7    -      -       +      +
   5012z  LEU*     3.3    17.1    -      -       +      +
   5015z  LEU*     3.7    17.5    -      -       +      -
   5016z  SER*     2.5    41.8    +      -       -      -
   5019z  MET*     4.6     9.0    -      -       +      -
   5043z  GLY      2.6    23.8    +      -       -      +
   5044z  SER*     3.5     6.3    -      -       -      +
   5046z  LEU*     1.3    72.9    -      -       -      +
   5048z  ILE*     1.3    76.8    +      -       +      +
   5050z  LEU*     2.9     8.3    +      -       -      +
   5051z  VAL*     2.9    50.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE5048 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5044z  SER*     3.2    18.8    -      -       -      +
   5045z  GLY*     3.1     9.8    +      -       -      +
   5047z  TRP*     1.3    89.2    -      -       +      +
   5049z  ALA*     1.3    68.8    +      -       -      +
   5051z  VAL*     3.3     5.3    +      -       -      +
   5052z  LEU*     2.9    40.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA5049 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5045z  GLY      3.0     9.8    +      -       -      +
   5046z  LEU*     3.5    14.8    -      -       +      +
   5048z  ILE*     1.3    78.0    -      -       -      +
   5050z  LEU*     1.3    52.8    +      -       -      +
   5052z  LEU*     2.8    13.9    +      -       -      +
   5053z  VAL*     2.6    44.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU5050 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5008z  ALA*     3.7    28.3    -      -       +      +
   5011z  ALA*     4.0    13.0    -      -       +      -
   5012z  LEU*     3.6    30.5    -      -       +      +
   5015z  LEU*     3.4    31.9    -      -       +      -
   5046z  LEU*     2.8    26.6    +      -       +      +
   5047z  TRP*     3.0     9.4    -      -       -      +
   5049z  ALA*     1.3    71.1    -      -       -      +
   5051z  VAL*     1.3    65.2    +      -       -      +
   5053z  VAL*     2.9    13.5    +      -       +      +
   5054z  VAL*     2.8    28.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL5051 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5120c  ILE*     4.0    29.4    -      -       +      -
   5505c  BCR      4.0    23.5    -      -       +      +
   5012z  LEU*     3.8    27.3    -      -       +      +
   5047z  TRP*     2.9    52.4    +      -       +      +
   5048z  ILE*     3.4     8.1    -      -       +      +
   5050z  LEU*     1.3    71.1    -      -       -      +
   5052z  LEU*     1.3    68.2    +      -       +      +
   5054z  VAL*     3.0     4.8    +      -       -      +
   5055z  GLY*     2.8    21.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU5052 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5505c  BCR      4.5    22.4    -      -       +      -
   5048z  ILE*     2.9    35.6    +      -       +      +
   5049z  ALA*     2.8    12.6    +      -       -      +
   5051z  VAL*     1.3    74.4    -      -       +      +
   5053z  VAL*     1.3    63.7    +      -       +      +
   5055z  GLY*     3.5     2.4    +      -       -      +
   5056z  VAL*     3.4    25.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL5053 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5004z  LEU*     6.0     2.5    -      -       +      -
   5008z  ALA*     4.8     8.3    -      -       +      -
   5049z  ALA*     2.6    34.1    +      -       +      +
   5050z  LEU*     3.2    13.9    -      -       +      +
   5052z  LEU*     1.3    73.0    -      -       +      +
   5054z  VAL*     1.3    58.3    -      -       +      +
   5056z  VAL*     3.2     7.3    +      -       -      +
   5057z  LEU*     2.9    46.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL5054 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5504c  BCR      5.6     1.3    -      -       +      -
   5505c  BCR      3.8    15.5    -      -       +      -
   5015k  TYR*     4.7     2.2    -      -       +      +
   5005z  PHE*     3.4    22.7    -      -       +      -
   5008z  ALA*     4.1     9.9    -      -       +      +
   5009z  LEU*     3.5    46.0    -      -       +      +
   5012z  LEU*     4.3    13.0    -      -       +      -
   5050z  LEU*     2.8    20.2    +      -       +      +
   5051z  VAL*     3.7     7.4    -      -       -      +
   5053z  VAL*     1.3    70.5    -      -       -      +
   5055z  GLY*     1.3    67.1    +      -       -      +
   5057z  LEU*     3.8     7.1    -      -       -      +
   5058z  ASN*     2.9    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY5055 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5505c  BCR      3.3    33.6    -      -       -      +
   5051z  VAL      2.8    15.0    +      -       -      -
   5052z  LEU*     3.5     3.3    +      -       -      -
   5054z  VAL*     1.3    79.6    -      -       -      +
   5056z  VAL*     1.3    60.6    +      -       -      +
   5058z  ASN*     3.2    15.8    -      -       -      +
   5059z  PHE*     3.2    18.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with VAL5056 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5052z  LEU      3.4    13.9    +      -       -      +
   5053z  VAL*     3.2     7.9    +      -       -      +
   5055z  GLY*     1.3    73.4    -      -       -      +
   5057z  LEU*     1.3    65.1    +      -       +      +
   5059z  PHE*     3.1    30.2    +      -       +      +
   5060z  PHE*     3.5    29.4    +      -       +      -
----------------------------------------------------------
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Residues in contact with LEU5057 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5001z  MET*     3.9    19.7    -      -       +      -
   5004z  LEU*     3.3    34.3    -      -       +      -
   5005z  PHE*     3.2    46.4    -      -       +      +
   5008z  ALA*     3.7    16.6    -      -       +      -
   5053z  VAL*     2.9    32.2    +      -       +      +
   5054z  VAL*     3.8     1.6    -      -       -      +
   5056z  VAL*     1.3    74.2    -      -       +      +
   5058z  ASN*     1.3    65.1    +      -       -      +
   5060z  PHE*     3.1    18.2    +      -       +      +
   5061z  VAL*     3.1    20.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN5058 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5109c  PHE*     4.0    14.1    -      -       -      -
   5112c  PHE*     3.9     5.1    -      -       -      -
   5505c  BCR      3.7    19.2    -      -       +      +
   5012k  PRO*     5.7     0.2    -      -       -      +
   5015k  TYR*     2.6    42.9    +      -       -      +
   5005z  PHE*     4.1     9.3    -      -       -      -
   5054z  VAL      2.9    11.5    +      -       -      +
   5055z  GLY      3.2    14.4    -      -       -      +
   5056z  VAL      3.1     0.4    -      -       -      -
   5057z  LEU*     1.3    76.9    -      -       -      +
   5059z  PHE*     1.3    78.3    +      -       -      +
   5061z  VAL*     2.9    18.7    +      -       -      +
   5062z  VAL*     2.9    24.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE5059 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5109c  PHE*     4.2    18.6    -      +       -      -
   5505c  BCR      4.3    26.7    -      -       +      -
   5055z  GLY      3.2    28.3    -      -       -      -
   5056z  VAL*     3.1    18.5    +      -       +      +
   5058z  ASN*     1.3    90.3    +      -       -      +
   5060z  PHE*     1.3    67.5    +      -       +      +
   5061z  VAL      3.1     0.7    +      -       -      -
   5062z  VAL      4.1    12.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE5060 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5001z  MET*     3.4    47.3    -      -       +      +
   5056z  VAL*     3.5    36.3    +      -       +      -
   5057z  LEU*     3.1    17.9    +      -       +      +
   5059z  PHE*     1.3    80.5    -      -       +      +
   5061z  VAL*     1.3    60.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL5061 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5014k  ALA*     3.6    29.6    -      -       +      +
   5001z  MET*     4.7     8.5    -      -       +      -
   5002z  THR*     4.4    16.4    -      -       -      +
   5005z  PHE*     3.8    28.9    -      -       +      -
   5057z  LEU      3.1    17.3    -      -       -      +
   5058z  ASN*     2.9     7.2    +      -       -      +
   5060z  PHE*     1.3    85.4    -      -       -      +
   5062z  VAL*     1.3    68.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL5062 (chain z). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   5109c  PHE*     5.5     7.2    -      -       +      -
   5012k  PRO*     4.8    19.1    -      -       +      -
   5014k  ALA*     6.3     0.9    -      -       +      -
   5015k  TYR*     5.7     1.3    -      -       +      -
   5058z  ASN*     2.9    31.6    +      -       -      +
   5059z  PHE*     4.1    12.4    -      -       -      +
   5061z  VAL*     1.3    84.3    -      -       -      +
----------------------------------------------------------
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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