Contacts of the helix formed by residues 319 - 342 (chain C) in PDB entry 3H1J


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 ARG 319 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103C  LEU      5.8     0.2    +      -       -      -
    104C  TYR      5.0     0.4    +      -       -      -
    108C  TYR*     4.8     4.2    +      -       -      -
    309C  HIS*     4.4     6.3    +      -       -      -
    311C  SER*     3.0    41.6    +      -       -      -
    313C  GLN*     3.8    13.2    +      -       -      +
    314C  ARG      4.2     8.9    +      -       -      -
    315C  THR      3.2    23.7    +      -       -      +
    316C  MET*     3.1    36.1    +      -       -      +
    317C  THR      3.5     0.4    -      -       -      -
    318C  PHE*     1.3    83.0    -      -       -      +
    320C  PRO*     1.3    62.1    -      -       -      +
    321C  LEU      3.3     2.0    -      -       -      -
    322C  SER*     3.1    22.7    +      -       -      -
    323C  GLN*     2.9    31.1    +      -       -      +
    367C  PHE*     5.6     3.0    +      -       -      -
    371C  GLY*     4.5     6.5    -      -       -      -
    374C  GLU*     3.1    31.4    +      -       +      +
     20F  TYR*     3.8     5.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with PRO 320 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    318C  PHE      3.6     8.7    -      -       -      +
    319C  ARG*     1.3    86.4    -      -       -      +
    321C  LEU*     1.3    71.6    +      -       +      +
    323C  GLN*     3.3     6.5    +      -       -      +
    324C  THR*     3.2    23.4    +      -       -      -
     19F  TRP*     5.1     2.9    -      -       +      -
     20F  TYR*     3.9    24.5    -      -       +      -
     23F  ALA*     4.1    22.7    -      -       +      +
     24F  ALA*     4.1     9.0    -      -       -      -
     47G  LYS*     3.8    31.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 321 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    319C  ARG      3.3     0.6    -      -       -      -
    320C  PRO*     1.3    80.5    -      -       +      +
    322C  SER*     1.3    68.7    +      -       -      +
    324C  THR*     3.0    16.8    +      -       -      -
    325C  LEU*     3.1    12.8    +      -       -      +
    370C  ILE*     3.4    22.8    -      -       +      +
    373C  LEU*     4.6    12.8    -      -       +      -
    374C  GLU*     3.2    25.4    -      -       +      +
    377C  MET*     4.2    21.8    -      -       +      -
     19F  TRP*     4.3    21.3    -      -       +      -
     20F  TYR*     4.5     2.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 322 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    316C  MET*     3.8    23.7    -      -       -      +
    319C  ARG*     3.1    30.8    +      -       -      -
    321C  LEU*     1.3    75.3    -      -       -      +
    323C  GLN*     1.3    57.6    +      -       -      +
    325C  LEU*     3.4     8.2    +      -       -      +
    326C  PHE*     2.9    29.5    +      -       -      +
    367C  PHE*     3.7     9.8    +      -       -      -
    370C  ILE*     4.1     7.8    -      -       -      +
    371C  GLY*     4.9     1.2    -      -       -      -
    374C  GLU*     2.7    28.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 323 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104C  TYR*     3.3    24.2    +      -       +      +
    316C  MET*     2.6    30.9    +      -       +      +
    317C  THR*     3.0    19.4    +      -       -      +
    319C  ARG      2.9    16.1    +      -       -      +
    320C  PRO*     3.4     8.5    -      -       -      +
    321C  LEU      3.1     0.4    -      -       -      -
    322C  SER*     1.3    76.8    -      -       -      +
    324C  THR*     1.3    60.6    +      -       -      +
    326C  PHE*     3.3     6.6    +      -       -      +
    327C  TRP*     3.0    35.2    +      -       +      +
   2007C  PEE      4.3     1.8    +      -       -      -
     24F  ALA      5.7     0.2    +      -       -      -
     44G  GLN*     3.3    12.7    +      -       -      +
     47G  LYS*     2.9    45.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 324 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    320C  PRO      3.2     9.2    +      -       -      -
    321C  LEU*     3.0     9.4    +      -       -      -
    323C  GLN*     1.3    75.2    -      -       -      +
    325C  LEU*     1.3    70.4    +      -       -      +
    326C  PHE      3.1     0.2    +      -       -      -
    327C  TRP*     3.2     2.6    +      -       -      +
    328C  LEU*     2.9    36.4    +      -       +      +
     46G  PHE      5.3     0.7    +      -       -      -
     47G  LYS*     4.2    27.5    +      -       -      +
     50G  PRO*     6.3     0.7    -      -       +      -
     51G  PRO*     4.7     6.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 325 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321C  LEU      3.1    11.3    +      -       -      +
    322C  SER*     3.6     8.1    -      -       -      +
    324C  THR*     1.3    79.3    -      -       -      +
    326C  PHE*     1.3    63.1    +      -       -      +
    328C  LEU*     3.2    18.8    -      -       +      +
    329C  LEU*     3.0    21.5    +      -       -      +
    362C  ILE*     3.4    26.5    -      -       +      +
    366C  LEU*     3.5    30.5    -      -       +      -
    367C  PHE*     3.4    47.1    -      -       +      +
    370C  ILE*     3.7    18.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 326 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    100C  GLY*     4.0     8.7    -      -       -      -
    103C  LEU*     4.3    21.5    -      -       +      -
    104C  TYR*     3.7    34.5    -      +       +      -
    316C  MET*     4.0    16.6    -      -       +      -
    322C  SER      2.9    14.5    +      -       -      +
    323C  GLN*     3.3     9.4    -      -       -      +
    324C  THR      3.0     0.2    -      -       -      -
    325C  LEU*     1.3    77.2    -      -       -      +
    327C  TRP*     1.3    81.2    +      +       -      +
    329C  LEU*     3.0     9.7    +      -       +      +
    330C  VAL*     3.0    42.9    +      -       +      +
    367C  PHE*     3.7     9.1    -      +       +      -
   2007C  PEE      3.8    51.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 327 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104C  TYR*     4.5     7.9    -      -       -      -
    323C  GLN*     3.0    28.3    +      -       +      +
    324C  THR      4.0     1.6    -      -       -      +
    326C  PHE*     1.3    97.7    -      +       -      +
    328C  LEU*     1.3    64.3    +      -       -      +
    330C  VAL*     3.6    18.0    -      -       +      +
    331C  ALA*     3.1    22.7    +      -       -      +
   2007C  PEE      3.2    86.6    -      -       +      -
     44G  GLN*     4.6     8.3    -      -       -      +
     47G  LYS*     4.0    16.4    -      -       +      +
     48G  VAL*     3.6    22.7    -      -       +      +
     51G  PRO*     3.6    22.2    -      -       +      +
     52G  PHE*     4.1    23.7    -      +       +      -
----------------------------------------------------------
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Residues in contact with LEU 328 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324C  THR*     2.9    19.9    +      -       +      +
    325C  LEU*     3.2    27.1    -      -       +      +
    327C  TRP*     1.3    78.4    -      -       -      +
    329C  LEU*     1.3    51.8    +      -       -      +
    331C  ALA*     3.2     4.6    +      -       +      +
    332C  ASN*     2.7    36.2    +      -       +      +
    362C  ILE*     4.5    11.9    -      -       +      -
    366C  LEU*     5.7     2.7    -      -       +      -
     51G  PRO*     3.2    31.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 329 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    103C  LEU*     4.0    19.7    -      -       +      -
    325C  LEU      3.0     8.4    +      -       -      +
    326C  PHE*     3.0    12.7    +      -       +      +
    328C  LEU*     1.3    81.3    -      -       -      +
    330C  VAL*     1.3    63.1    +      -       +      +
    332C  ASN*     3.0     9.9    +      -       -      +
    333C  LEU*     3.0    27.1    +      -       +      +
    359C  TYR*     3.8    33.4    -      -       +      +
    362C  ILE*     3.9    29.1    -      -       +      +
    363C  LEU*     3.8    25.4    -      -       +      -
    367C  PHE*     4.3     6.1    -      -       +      -
   2007C  PEE      4.6    16.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 330 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    326C  PHE*     3.0    42.3    +      -       +      +
    327C  TRP*     3.7    13.9    -      -       +      +
    328C  LEU      3.2     0.4    -      -       -      -
    329C  LEU*     1.3    76.0    -      -       +      +
    331C  ALA*     1.3    57.7    +      -       -      +
    333C  LEU*     3.1    13.4    +      -       -      +
    334C  LEU*     3.0    24.5    +      -       +      +
   2007C  PEE      4.2    52.2    -      -       +      +
     52G  PHE*     3.7    22.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 331 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327C  TRP      3.1    10.7    +      -       -      +
    328C  LEU*     3.6     7.0    -      -       +      +
    330C  VAL*     1.3    72.2    -      -       -      +
    332C  ASN*     1.3    56.2    +      -       -      +
    334C  LEU*     3.1     7.5    +      -       -      +
    335C  ILE*     2.7    41.5    +      -       +      +
     51G  PRO*     3.6    21.3    -      -       +      +
     52G  PHE*     3.4    30.9    -      -       +      -
     55G  ALA*     4.1     8.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASN 332 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328C  LEU*     2.7    18.3    +      -       +      +
    329C  LEU*     3.0    18.6    +      -       +      +
    331C  ALA*     1.3    73.0    -      -       -      +
    333C  LEU*     1.3    53.6    +      -       -      +
    335C  ILE*     3.2    13.7    -      -       -      +
    336C  LEU*     2.9    31.0    +      -       -      +
    355C  ALA*     3.1    21.6    -      -       -      +
    358C  SER*     2.6    31.2    +      -       -      +
    359C  TYR*     2.9    28.6    -      -       -      +
    362C  ILE*     3.5     9.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 333 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277C  PHE*     4.2    24.9    -      -       +      +
    329C  LEU*     3.0    21.9    +      -       +      +
    330C  VAL*     3.5     9.6    -      -       -      +
    332C  ASN*     1.3    70.4    -      -       -      +
    334C  LEU*     1.3    57.7    +      -       -      +
    335C  ILE      3.0     1.3    -      -       -      -
    336C  LEU*     3.0    11.4    +      -       +      +
    337C  THR*     2.7    38.8    +      -       -      -
    359C  TYR*     3.6    32.3    -      -       +      -
   2007C  PEE      3.8    69.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 334 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330C  VAL*     3.0    13.0    +      -       +      +
    331C  ALA*     3.2    11.0    -      -       +      +
    333C  LEU*     1.3    75.5    -      -       -      +
    335C  ILE*     1.3    64.2    +      -       +      +
    337C  THR*     3.4    10.7    +      -       +      -
    338C  TRP*     3.0    21.5    +      -       -      +
   2007C  PEE      4.4    30.4    -      -       +      +
     52G  PHE*     4.2    26.9    -      -       +      -
     55G  ALA*     5.5     6.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 335 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331C  ALA*     2.7    21.1    +      -       +      +
    332C  ASN*     3.2    12.8    -      -       -      +
    334C  LEU*     1.3    73.8    -      -       +      +
    336C  LEU*     1.3    67.0    +      -       -      +
    338C  TRP*     2.9    16.6    +      -       +      +
    339C  ILE*     2.8    31.8    +      -       +      +
    351C  ILE*     4.4    13.7    -      -       +      -
    355C  ALA*     4.0    19.7    -      -       +      -
     55G  ALA*     3.8    28.5    -      -       +      +
     58G  LEU*     3.7    24.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 336 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276C  LEU      4.2     0.3    -      -       -      +
    277C  PHE*     4.1    16.4    -      -       +      +
    280C  ALA*     3.3    21.6    -      -       +      +
    281C  ILE*     4.0    20.0    -      -       +      -
    332C  ASN*     2.9    32.3    +      -       -      +
    333C  LEU*     3.5    17.3    -      -       +      +
    335C  ILE*     1.3    75.9    -      -       -      +
    337C  THR*     1.3    57.3    +      -       -      +
    339C  ILE*     3.3     3.7    +      -       -      +
    340C  GLY*     2.9    25.5    +      -       -      -
    352C  GLY*     4.0     6.3    -      -       -      +
    355C  ALA*     3.5    22.7    -      -       +      +
    356C  SER*     3.5    21.5    -      -       -      +
    359C  TYR*     4.0    21.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with THR 337 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273C  TRP*     4.4    11.3    +      -       +      +
    276C  LEU*     3.8    35.8    -      -       +      +
    277C  PHE*     3.9    12.8    +      -       -      +
    333C  LEU      2.7    18.2    +      -       -      -
    334C  LEU*     3.5    14.6    -      -       +      -
    336C  LEU*     1.3    72.8    -      -       -      +
    338C  TRP*     1.3    66.2    +      -       -      +
    340C  GLY*     3.1     9.9    +      -       -      -
    341C  SER*     3.4     8.5    +      -       -      -
   2007C  PEE      3.8    22.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with TRP 338 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334C  LEU      3.0    13.1    +      -       -      +
    335C  ILE*     2.9    21.7    +      -       +      +
    337C  THR*     1.3    75.7    -      -       -      +
    339C  ILE*     1.3    86.8    +      -       +      +
    341C  SER*     2.7    28.6    +      -       -      -
    342C  GLN*     3.4    24.1    +      -       +      +
    348C  PHE*     3.3    33.0    -      +       -      -
    351C  ILE*     3.9    21.5    -      -       +      -
     58G  LEU*     3.7    28.3    -      -       +      -
     59G  TYR*     3.2    52.1    -      +       +      -
     62G  GLY*     4.1     2.0    -      -       -      -
     63G  THR*     3.8     4.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 339 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280C  ALA*     4.1    11.4    -      -       +      +
    283C  ARG*     2.8    24.1    +      -       -      +
    335C  ILE*     2.8    26.7    +      -       +      +
    336C  LEU*     3.4    11.0    -      -       -      +
    338C  TRP*     1.3    93.7    -      -       +      +
    340C  GLY*     1.3    58.6    +      -       -      +
    342C  GLN*     2.8    25.2    +      -       -      +
    348C  PHE*     3.6    39.7    -      -       +      +
    349C  ILE*     6.0     0.4    -      -       -      -
    351C  ILE*     3.9    15.0    -      -       +      -
    352C  GLY*     4.0    24.9    -      -       -      +
    355C  ALA*     5.6     0.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 340 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270C  LYS*     3.6     7.6    -      -       -      +
    276C  LEU*     3.8    13.2    -      -       -      +
    279C  TYR*     3.1    36.7    -      -       -      -
    280C  ALA*     3.8     8.2    -      -       -      +
    283C  ARG*     3.7     9.0    +      -       -      -
    336C  LEU      2.9    17.6    +      -       -      -
    337C  THR      3.1     5.9    +      -       -      -
    339C  ILE*     1.3    73.9    -      -       -      +
    341C  SER*     1.3    58.3    +      -       -      +
    342C  GLN      3.5     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 341 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270C  LYS*     4.1    19.8    -      -       -      +
    276C  LEU*     4.1    14.3    -      -       -      +
    337C  THR      3.4     6.6    +      -       -      -
    338C  TRP*     2.7    24.6    +      -       -      -
    340C  GLY*     1.3    75.1    -      -       -      +
    342C  GLN*     1.3    76.2    +      -       -      +
    343C  PRO*     4.2     1.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 342 (chain C). Click here for Legend to table.
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                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270C  LYS*     4.1     3.0    -      -       -      -
    283C  ARG*     2.8    37.4    +      -       -      -
    338C  TRP*     3.4    34.8    +      -       +      +
    339C  ILE*     2.8     9.1    +      -       -      +
    341C  SER*     1.3    94.5    +      -       -      +
    343C  PRO*     1.3    67.9    -      -       -      +
    348C  PHE*     3.3    46.5    -      -       +      -
     59G  TYR*     5.3     0.9    -      -       -      -
     66G  PHE*     5.7     2.0    -      -       -      -
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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