Contacts of the helix formed by residues 393 - 414 (chain H) in PDB entry 1B6C


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 PHE 393 (chain H).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317H  HIS      4.8     0.2    -      -       -      -
    328H  ALA*     3.4    29.8    -      -       +      -
    329H  ILE      3.6     6.7    -      -       -      -
    330H  ALA*     3.6    28.3    -      -       +      -
    356H  VAL*     3.8    28.7    -      -       +      -
    357H  ARG      4.3     0.4    -      -       -      -
    358H  HIS*     3.6    50.0    -      +       +      +
    365H  ILE*     3.3    21.1    -      -       +      +
    391H  LYS      4.1     0.4    +      -       -      -
    392H  HIS*     1.3    71.4    -      -       -      +
    394H  GLU*     1.3    64.5    +      -       +      +
    396H  PHE*     2.9    27.6    +      +       -      +
    397H  LYS*     3.5    31.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 394 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392H  HIS*     3.2     5.7    +      -       +      -
    393H  PHE*     1.3    79.2    -      -       +      +
    395H  SER*     1.3    63.7    +      -       -      +
    397H  LYS*     2.6    48.0    +      -       -      +
    398H  ARG*     2.9    58.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 395 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    382H  GLU*     4.6     2.6    -      -       -      +
    388H  ILE*     3.6    24.0    -      -       -      +
    389H  ASN*     3.1    28.1    +      -       -      +
    392H  HIS*     2.9    20.4    +      -       -      +
    394H  GLU*     1.3    78.7    -      -       -      +
    396H  PHE*     1.3    61.9    +      -       -      +
    398H  ARG*     3.5    15.8    +      -       -      +
    399H  ALA*     3.1    22.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 396 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330H  ALA*     3.3    21.4    -      -       +      +
    332H  ARG*     3.6    38.6    -      -       +      +
    356H  VAL*     4.0    12.6    -      -       +      -
    365H  ILE*     4.0    17.0    -      -       +      -
    367H  ILE*     4.0    15.3    -      -       +      -
    388H  ILE*     4.6    10.5    -      -       +      -
    389H  ASN      5.1     0.2    -      -       -      -
    390H  MET*     3.8    53.4    -      -       +      -
    392H  HIS      4.0     6.1    -      -       -      -
    393H  PHE*     2.9    20.6    +      +       +      +
    395H  SER*     1.3    77.2    -      -       -      +
    397H  LYS*     1.3    66.3    +      -       -      +
    399H  ALA*     3.2     8.2    +      -       +      +
    400H  ASP*     3.1    24.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 397 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317H  HIS*     3.5    60.4    +      -       +      +
    328H  ALA*     5.1     0.7    -      -       -      -
    330H  ALA*     4.5     0.6    -      -       +      +
    393H  PHE*     3.5    30.9    +      -       +      +
    394H  GLU*     2.6    42.3    +      -       -      +
    396H  PHE*     1.3    77.1    -      -       -      +
    398H  ARG*     1.3    63.5    +      -       +      +
    400H  ASP*     3.0     5.7    +      -       -      +
    401H  ILE*     3.0    27.4    +      -       +      +
    484H  THR*     5.7     2.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 398 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    382H  GLU*     4.9     1.1    -      -       -      +
    394H  GLU*     2.9    50.5    +      -       -      +
    395H  SER*     3.7    13.9    +      -       -      +
    397H  LYS*     1.3    77.8    -      -       +      +
    399H  ALA*     1.3    62.6    +      -       -      +
    401H  ILE*     3.4    11.7    +      -       +      +
    402H  TYR      3.2    13.9    +      -       -      -
    479H  GLY*     3.1    32.3    +      -       -      +
    480H  ALA*     3.6    30.9    +      -       -      +
    482H  ARG*     2.8    26.3    +      -       +      +
    483H  LEU      6.1     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 399 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332H  ARG*     6.5     0.7    -      -       -      -
    378H  TYR      5.0     0.3    -      -       -      +
    380H  ALA*     4.0    26.5    +      -       +      +
    382H  GLU*     4.3     4.0    +      -       -      +
    383H  VAL*     4.5    14.4    -      -       +      -
    388H  ILE*     4.6     2.9    -      -       +      -
    395H  SER      3.1    14.7    +      -       -      +
    396H  PHE*     3.6    12.3    -      -       +      +
    397H  LYS      3.2     0.2    -      -       -      -
    398H  ARG*     1.3    76.3    -      -       -      +
    400H  ASP*     1.3    65.2    +      -       -      +
    402H  TYR*     3.3     6.1    +      -       -      +
    403H  ALA*     3.3    18.7    +      -       -      +
    482H  ARG*     3.9     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 400 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313H  LEU*     3.9    10.5    -      -       +      +
    317H  HIS*     2.7    30.6    +      -       +      +
    330H  ALA*     3.5     4.0    -      -       -      -
    331H  HIS*     2.9    29.7    +      -       -      +
    332H  ARG*     2.9    28.3    +      -       -      -
    333H  ASP      4.6     0.3    +      -       -      -
    334H  LEU*     3.9     8.7    +      -       +      +
    396H  PHE      3.1    13.4    +      -       -      +
    397H  LYS      3.0     9.3    +      -       -      +
    399H  ALA*     1.3    74.3    -      -       -      +
    401H  ILE*     1.3    55.1    +      -       -      +
    403H  ALA*     2.9    10.1    +      -       -      +
    404H  MET*     2.7    33.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 401 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313H  LEU*     4.2    10.5    -      -       +      -
    317H  HIS*     4.4     3.6    -      -       +      +
    397H  LYS*     3.0    18.4    +      -       +      +
    398H  ARG*     3.5    11.9    -      -       +      +
    400H  ASP*     1.3    75.3    -      -       -      +
    402H  TYR*     1.3    63.7    +      -       -      +
    404H  MET*     3.1     5.7    +      -       -      +
    405H  GLY      2.9    19.8    +      -       -      -
    474H  CYS*     3.4    33.8    -      -       +      +
    482H  ARG*     4.2     7.6    -      -       +      -
    483H  LEU      3.3    24.7    -      -       -      +
    484H  THR*     4.1     1.6    -      -       -      -
    485H  ALA*     3.5    39.9    -      -       +      +
    488H  ILE*     4.4     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 402 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377H  ARG      4.9     0.2    -      -       -      -
    378H  TYR      3.6     9.9    -      -       -      -
    379H  MET      3.3    20.4    +      -       -      -
    380H  ALA*     3.5    15.9    -      -       +      -
    381H  PRO*     3.8    21.8    -      -       +      -
    398H  ARG      3.2     3.4    +      -       -      +
    399H  ALA      3.6     7.9    -      -       -      +
    400H  ASP      3.2     0.8    -      -       -      -
    401H  ILE*     1.3    80.2    -      -       -      +
    403H  ALA*     1.3    65.3    +      -       -      +
    405H  GLY*     3.3     2.4    +      -       -      -
    406H  LEU*     3.3    39.1    +      -       +      +
    428H  TYR*     2.4    38.2    +      -       -      -
    445H  VAL*     3.9     9.1    -      -       +      +
    451H  ARG*     4.2    13.7    -      -       -      -
    474H  CYS      3.4    23.8    +      -       -      +
    475H  TRP*     3.7    24.1    +      +       -      -
    482H  ARG*     3.9    17.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 403 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334H  LEU*     3.9    30.3    -      -       +      +
    378H  TYR*     3.8    20.4    -      -       +      +
    399H  ALA      3.3     7.8    +      -       -      +
    400H  ASP*     2.9    10.4    +      -       -      +
    402H  TYR*     1.3    83.7    -      -       -      +
    404H  MET*     1.3    65.2    +      -       -      +
    406H  LEU*     3.0    17.8    +      -       -      +
    407H  VAL*     3.0    17.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 404 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309H  THR*     3.1    43.3    -      -       +      +
    310H  ALA*     3.1    19.7    -      -       -      -
    313H  LEU*     3.2    32.8    -      -       +      -
    334H  LEU*     4.0    12.3    -      -       +      +
    400H  ASP      2.7    17.0    +      -       -      +
    401H  ILE*     3.1    11.0    +      -       -      +
    403H  ALA*     1.3    71.8    -      -       -      +
    405H  GLY*     1.3    58.3    +      -       -      +
    407H  VAL*     2.9    11.1    +      -       +      +
    408H  PHE*     2.8    61.0    +      -       +      -
    474H  CYS*     5.4     1.3    -      -       -      -
    485H  ALA*     5.3     2.0    -      -       +      -
    488H  ILE*     4.4    15.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 405 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401H  ILE      2.9    13.0    +      -       -      -
    402H  TYR      3.6     4.5    -      -       -      -
    403H  ALA      3.1     0.4    -      -       -      -
    404H  MET*     1.3    78.4    -      -       -      +
    406H  LEU*     1.3    61.0    +      -       -      +
    408H  PHE*     3.1    10.9    +      -       -      +
    409H  TRP      3.0    17.7    +      -       -      -
    471H  MET*     4.0     4.9    -      -       -      +
    474H  CYS*     3.8    16.9    -      -       -      -
    475H  TRP*     3.5    21.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 406 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377H  ARG      3.6    20.4    -      -       -      +
    378H  TYR*     3.8    19.1    -      -       +      +
    402H  TYR*     3.3    38.7    +      -       +      +
    403H  ALA*     3.0     7.3    +      -       -      +
    405H  GLY*     1.3    76.3    -      -       -      +
    407H  VAL*     1.3    63.2    +      -       -      +
    409H  TRP*     3.0     6.4    +      -       -      +
    410H  GLU*     3.0    23.4    +      -       -      +
    427H  PRO*     3.6    21.3    -      -       +      +
    428H  TYR*     4.1     9.4    -      -       +      +
    452H  PRO*     3.6    31.0    -      -       +      -
    475H  TRP*     3.4    21.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 407 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288H  LEU*     3.7    28.5    -      -       +      -
    309H  THR*     4.9     4.0    -      -       +      -
    334H  LEU*     4.8     2.2    -      -       +      -
    335H  LYS*     4.0    30.7    -      -       -      +
    336H  SER*     4.0     6.1    -      -       -      +
    339H  ILE*     3.9    14.6    -      -       +      -
    378H  TYR*     4.0     6.3    -      -       +      -
    403H  ALA      3.0    17.5    +      -       -      +
    404H  MET*     2.9    15.3    +      -       +      +
    406H  LEU*     1.3    77.6    -      -       -      +
    408H  PHE*     1.3    65.8    +      -       +      +
    410H  GLU*     3.0    21.4    +      -       +      +
    411H  ILE*     3.0    18.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 408 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306H  ALA*     3.5    39.9    -      -       +      -
    309H  THR*     4.3     9.2    -      -       +      -
    404H  MET*     2.8    51.4    +      -       +      -
    405H  GLY*     3.1    10.5    +      -       -      +
    407H  VAL*     1.3    77.3    -      -       +      +
    409H  TRP*     1.3    57.5    +      -       -      +
    411H  ILE*     3.4     6.1    +      -       +      +
    412H  ALA*     2.9    31.5    +      -       -      +
    467H  MET*     3.7    25.1    -      -       +      +
    470H  ILE*     3.8    20.6    -      -       +      -
    471H  MET*     4.2    11.2    -      -       +      -
    474H  CYS*     5.8     0.4    -      -       -      -
    488H  ILE*     3.6    28.7    -      -       +      -
    492H  LEU*     3.9     9.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 409 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405H  GLY      3.0     8.2    +      -       -      +
    406H  LEU*     3.0    11.1    +      -       -      +
    408H  PHE*     1.3    77.0    -      -       -      +
    410H  GLU*     1.3    82.7    +      -       +      +
    412H  ALA*     3.9     1.6    -      -       -      +
    413H  ARG*     3.0    59.5    +      -       -      +
    425H  GLN*     3.5    14.8    -      -       +      -
    426H  LEU      3.5    17.3    -      -       -      -
    427H  PRO*     3.7    15.5    -      -       +      -
    428H  TYR      4.9     0.2    -      -       -      -
    429H  TYR*     3.7    29.2    -      +       -      -
    452H  PRO*     3.5    24.8    -      -       +      +
    453H  ASN*     2.8    33.2    +      -       +      -
    458H  TRP*     4.0    11.6    -      +       -      -
    471H  MET*     3.0    37.2    -      -       +      +
    475H  TRP*     3.9     6.1    -      +       +      -
----------------------------------------------------------
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Residues in contact with GLU 410 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292H  LEU*     4.3     9.2    -      -       +      +
    336H  SER*     2.2    26.1    +      -       -      +
    378H  TYR*     2.4    35.8    +      -       -      -
    406H  LEU      3.0    15.5    +      -       -      +
    407H  VAL*     3.0    14.4    +      -       +      +
    409H  TRP*     1.3    81.9    -      -       +      +
    411H  ILE*     1.3    62.4    +      -       -      +
    413H  ARG*     3.5    12.9    -      -       -      +
    414H  ARG*     3.6    13.5    -      -       -      +
    424H  TYR*     2.3    36.0    +      -       +      -
    425H  GLN      3.8    14.8    -      -       -      +
    427H  PRO*     3.8    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 411 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288H  LEU*     3.7    32.1    -      -       +      -
    292H  LEU*     4.0    14.4    -      -       +      -
    297H  VAL*     4.0     5.9    -      -       +      +
    302H  MET*     3.7    34.8    -      -       +      +
    305H  LEU*     4.0    27.8    -      -       +      +
    306H  ALA*     4.3    13.7    -      -       +      +
    309H  THR*     5.1     1.1    -      -       -      +
    407H  VAL*     3.0    19.4    +      -       +      +
    408H  PHE*     3.7    12.6    -      -       +      +
    409H  TRP      3.2     0.2    -      -       -      -
    410H  GLU*     1.3    74.5    -      -       -      +
    412H  ALA*     1.3    56.9    +      -       -      +
    414H  ARG*     2.7    31.2    +      -       -      +
    415H  CYS      3.4     3.6    +      -       -      -
    467H  MET*     5.1     1.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 412 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302H  MET*     3.9    17.7    -      -       -      -
    408H  PHE      2.9    18.1    +      -       -      +
    409H  TRP*     4.6     0.2    -      -       -      -
    411H  ILE*     1.3    76.8    -      -       -      +
    413H  ARG*     1.3    62.1    +      -       -      +
    415H  CYS*     2.9    20.7    +      -       -      +
    457H  ARG*     5.3     0.9    +      -       -      -
    458H  TRP*     3.5    36.8    +      -       +      -
    464H  LEU*     4.0    14.8    -      -       +      +
    467H  MET*     4.8     7.0    -      -       +      -
    471H  MET*     4.8     2.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 413 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    433B  PRO*     6.1     0.8    -      -       -      +
    434B  SER      5.8     0.6    -      -       -      +
    409H  TRP*     3.0    57.5    +      -       +      +
    410H  GLU      3.5     7.6    -      -       -      +
    411H  ILE      3.1     0.2    -      -       -      -
    412H  ALA*     1.3    77.2    -      -       -      +
    414H  ARG*     1.3    59.1    +      -       +      +
    415H  CYS      3.8     0.9    +      -       -      +
    421H  HIS*     4.1     1.6    -      -       -      +
    422H  GLU*     2.9    63.2    +      -       +      +
    423H  ASP*     2.2    38.7    +      -       -      +
    425H  GLN*     3.5    23.6    -      -       -      +
    429H  TYR*     3.1    24.8    +      -       -      -
    457H  ARG*     5.0     2.9    +      -       -      +
    458H  TRP*     3.7    13.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 414 (chain H). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292H  LEU*     2.7    55.5    +      -       +      -
    293H  ASN*     3.9    11.1    +      -       -      +
    294H  ARG      4.5     0.8    +      -       -      -
    295H  TYR      3.0    27.3    +      -       -      +
    296H  THR*     3.5    26.0    -      -       -      +
    297H  VAL*     2.7    33.0    +      -       +      -
    410H  GLU      3.6    14.6    -      -       -      +
    411H  ILE      2.7    11.7    +      -       -      +
    413H  ARG*     1.3    80.1    -      -       +      +
    415H  CYS*     1.3    63.2    +      -       -      +
    416H  SER      3.2     0.5    +      -       -      -
    421H  HIS*     3.7    11.1    +      -       -      -
    422H  GLU      3.1    25.9    +      -       -      -
    423H  ASP*     4.1     8.5    +      -       -      +
    424H  TYR*     3.8    22.8    -      -       +      +
----------------------------------------------------------
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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