Contacts of the helix formed by residues 392 - 413 (chain C) in PDB entry 1IAS


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 HIS 392 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    389C  ASN*     3.1    19.9    +      -       -      +
    390C  MET      4.8     1.6    -      -       -      -
    391C  LYS*     1.3   112.7    +      -       +      +
    393C  PHE*     1.3    67.1    +      -       -      +
    394C  GLU*     3.0     9.4    -      -       +      +
    395C  SER*     2.8    36.1    +      -       -      +
    396C  PHE*     4.3     3.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 393 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328C  ALA*     3.5    35.0    -      -       +      -
    329C  ILE      3.8     2.9    -      -       -      -
    330C  ALA*     3.7    26.2    -      -       +      -
    356C  VAL*     3.5    32.1    -      -       +      -
    357C  ARG      4.3     2.9    -      -       -      -
    358C  HIS*     3.6    46.8    -      +       +      +
    365C  ILE*     5.3    10.8    -      -       +      +
    391C  LYS      3.8     4.2    +      -       -      -
    392C  HIS*     1.3    70.7    -      -       -      +
    394C  GLU*     1.3    66.4    +      -       +      +
    396C  PHE*     3.0    34.4    +      +       -      +
    397C  LYS*     3.5    28.1    +      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 394 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    392C  HIS*     3.0     8.0    +      -       +      -
    393C  PHE*     1.3    81.4    -      -       +      +
    395C  SER*     1.3    62.7    +      -       -      +
    397C  LYS*     3.0    46.1    +      -       -      +
    398C  ARG*     3.0    61.9    +      -       -      +
    484C  THR*     6.0     2.1    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER 395 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    382C  GLU*     4.2     4.2    -      -       -      +
    388C  ILE*     3.6    26.9    -      -       -      +
    389C  ASN*     2.6    33.4    +      -       -      +
    390C  MET*     5.0     0.2    -      -       -      -
    392C  HIS*     2.8    17.0    +      -       -      +
    394C  GLU*     1.3    77.4    -      -       -      +
    396C  PHE*     1.3    60.2    +      -       -      +
    398C  ARG*     3.4    16.7    +      -       -      +
    399C  ALA*     3.1    25.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 396 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    330C  ALA*     3.5    21.5    -      -       +      -
    332C  ARG*     3.7    28.3    +      -       +      +
    356C  VAL*     4.2    10.3    -      -       +      -
    365C  ILE*     4.8    12.8    -      -       +      -
    370C  ASN*     4.4    13.5    -      -       -      -
    388C  ILE*     4.6     8.3    -      -       +      -
    390C  MET*     3.5    64.6    -      -       +      -
    392C  HIS      4.3     4.9    -      -       -      -
    393C  PHE*     3.0    34.2    +      +       -      +
    395C  SER*     1.3    74.3    -      -       -      +
    397C  LYS*     1.3    66.1    +      -       -      +
    399C  ALA*     3.2     8.7    +      -       +      +
    400C  ASP*     3.1    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 397 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317C  HIS*     3.3    68.9    +      -       +      +
    318C  MET*     5.4     0.6    -      -       -      +
    319C  GLU*     6.3     0.4    -      -       -      +
    328C  ALA*     4.5     2.1    -      -       -      +
    330C  ALA*     4.7     0.2    -      -       -      -
    393C  PHE*     3.5    33.8    +      -       +      +
    394C  GLU*     3.0    39.4    +      -       -      +
    396C  PHE*     1.3    77.2    -      -       -      +
    398C  ARG*     1.3    63.3    +      -       +      +
    400C  ASP*     3.1    18.8    +      -       -      +
    401C  ILE*     3.2     9.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 398 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    382C  GLU*     4.6     2.0    -      -       -      +
    392C  HIS*     6.4     0.2    -      -       -      +
    394C  GLU*     3.0    46.6    +      -       -      +
    395C  SER*     3.5    14.3    +      -       -      +
    397C  LYS*     1.3    75.3    -      -       +      +
    399C  ALA*     1.3    66.0    +      -       -      +
    401C  ILE*     3.1    19.8    +      -       -      +
    402C  TYR      3.2     9.9    +      -       -      -
    479C  GLY*     3.5    24.0    -      -       -      +
    480C  ALA*     3.4    36.8    +      -       -      +
    482C  ARG*     3.2    23.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 399 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332C  ARG*     6.4     1.6    -      -       -      -
    378C  TYR      5.2     0.5    -      -       -      +
    380C  ALA*     3.9    28.7    +      -       +      +
    382C  GLU*     4.2     2.7    +      -       -      +
    383C  VAL*     4.2    16.2    -      -       +      -
    388C  ILE*     5.1     1.6    -      -       +      -
    395C  SER      3.1    14.4    +      -       -      +
    396C  PHE*     3.2    11.8    +      -       +      +
    398C  ARG*     1.3    75.0    -      -       -      +
    400C  ASP*     1.3    63.8    +      -       -      +
    402C  TYR*     3.4     5.0    +      -       -      +
    403C  ALA*     3.3    20.8    +      -       -      +
    482C  ARG*     3.9     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 400 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313C  LEU*     4.1     9.4    -      -       +      -
    317C  HIS*     2.8    26.3    +      -       +      +
    330C  ALA*     3.5     4.4    -      -       -      +
    331C  HIS*     2.8    33.9    +      -       -      +
    332C  ARG*     2.9    26.3    +      -       -      -
    333C  ASP      4.3     2.3    +      -       -      -
    334C  LEU*     3.9    10.2    +      -       +      +
    396C  PHE      3.1    12.2    +      -       -      +
    397C  LYS      3.2    10.3    -      -       -      +
    398C  ARG      3.1     0.2    -      -       -      -
    399C  ALA*     1.3    78.8    -      -       -      +
    401C  ILE*     1.3    58.1    +      -       -      +
    403C  ALA*     3.3     7.2    +      -       -      +
    404C  MET*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 401 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313C  LEU*     3.8    21.8    -      -       +      -
    317C  HIS*     4.3     4.3    -      -       +      +
    397C  LYS      3.4    14.8    -      -       -      +
    398C  ARG*     3.1    10.7    +      -       -      +
    400C  ASP*     1.3    74.5    -      -       -      +
    402C  TYR*     1.3    66.7    +      -       -      +
    404C  MET*     3.0     6.3    +      -       +      +
    405C  GLY*     2.8    20.3    +      -       -      -
    474C  CYS*     3.5    31.9    -      -       +      -
    482C  ARG*     4.4     5.8    -      -       +      -
    483C  LEU      3.5    23.1    -      -       -      +
    484C  THR*     4.2     1.1    -      -       -      -
    485C  ALA*     3.6    31.4    -      -       +      +
    488C  ILE*     4.3     8.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 402 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377C  ARG      4.9     0.2    +      -       -      -
    378C  TYR      3.2    13.2    -      -       -      -
    379C  MET      3.2    24.4    +      -       -      -
    380C  ALA*     3.4    17.0    -      -       +      -
    381C  PRO*     3.8    22.4    -      -       +      -
    398C  ARG      3.2     3.0    +      -       -      -
    399C  ALA      3.6     7.2    -      -       -      +
    400C  ASP      3.3     0.2    -      -       -      -
    401C  ILE*     1.3    78.7    -      -       -      +
    403C  ALA*     1.3    63.5    +      -       -      +
    405C  GLY*     3.2     9.9    +      -       -      -
    406C  LEU*     3.2    28.7    +      -       +      +
    428C  TYR*     2.6    42.2    +      -       -      -
    445C  VAL*     3.9     6.6    -      -       -      +
    451C  ARG*     4.4     8.5    -      -       -      -
    474C  CYS      3.5    20.1    +      -       -      +
    475C  TRP*     3.7    27.7    +      +       -      -
    482C  ARG*     3.9    17.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 403 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    334C  LEU*     3.8    29.8    -      -       +      +
    378C  TYR*     3.9    21.3    -      -       +      +
    399C  ALA      3.3     8.1    +      -       -      +
    400C  ASP*     3.3     8.1    +      -       -      +
    401C  ILE      3.2     0.4    -      -       -      -
    402C  TYR*     1.3    80.2    -      -       -      +
    404C  MET*     1.3    67.7    +      -       -      +
    405C  GLY      3.0     1.8    -      -       -      -
    406C  LEU*     3.0    19.6    +      -       -      +
    407C  VAL*     3.0    17.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 404 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309C  THR*     3.2    47.3    -      -       +      +
    310C  ALA*     3.3    18.2    -      -       -      +
    313C  LEU*     3.5    32.8    -      -       +      -
    334C  LEU*     4.2     9.1    -      -       +      +
    400C  ASP      2.9    15.2    +      -       -      +
    401C  ILE*     3.0    11.6    +      -       +      +
    403C  ALA*     1.3    76.3    -      -       -      +
    405C  GLY*     1.3    57.5    +      -       -      +
    407C  VAL*     3.3     9.6    +      -       +      +
    408C  PHE*     3.0    50.6    +      -       +      -
    474C  CYS*     5.8     0.9    -      -       -      -
    485C  ALA*     5.7     1.6    -      -       -      -
    488C  ILE*     4.6    16.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 405 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    401C  ILE      2.8    13.0    +      -       -      -
    402C  TYR      3.6     4.3    -      -       -      -
    403C  ALA      3.0     0.6    -      -       -      -
    404C  MET*     1.3    76.7    -      -       -      +
    406C  LEU*     1.3    64.9    +      -       -      +
    408C  PHE*     3.0    10.7    +      -       -      +
    409C  TRP*     3.0    21.0    +      -       -      +
    471C  MET*     4.3     5.5    -      -       -      +
    474C  CYS*     4.1    16.8    -      -       -      -
    475C  TRP*     3.5    16.5    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 406 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377C  ARG      4.0     6.5    -      -       -      +
    378C  TYR*     3.8    31.4    -      -       +      +
    402C  TYR*     3.2    38.7    +      -       +      +
    403C  ALA*     3.0     7.2    +      -       -      +
    405C  GLY*     1.3    75.4    -      -       -      +
    407C  VAL*     1.3    61.3    +      -       -      +
    409C  TRP*     3.1     9.5    -      -       -      +
    410C  GLU*     3.1    26.4    +      -       -      +
    427C  PRO*     3.6    20.8    -      -       +      +
    428C  TYR*     4.1     9.2    -      -       +      +
    452C  PRO*     3.8    27.6    -      -       +      -
    475C  TRP*     3.4    22.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 407 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288C  LEU*     3.7    30.1    -      -       +      -
    309C  THR*     5.3     3.4    -      -       +      -
    334C  LEU*     4.9     1.1    -      -       +      -
    335C  LYS*     3.8    14.6    -      -       -      +
    336C  SER*     3.8    25.6    -      -       -      +
    339C  ILE*     4.1    14.1    -      -       +      -
    378C  TYR*     4.0     1.3    -      -       +      -
    403C  ALA      3.0    13.9    +      -       -      +
    404C  MET*     3.4    14.4    -      -       +      +
    405C  GLY      3.0     0.2    -      -       -      -
    406C  LEU*     1.3    73.2    -      -       -      +
    408C  PHE*     1.3    71.1    +      -       +      +
    409C  TRP      3.0     1.6    -      -       -      -
    410C  GLU*     2.9    23.9    +      -       +      +
    411C  ILE*     3.0    21.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 408 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306C  ALA*     3.4    38.8    -      -       +      -
    309C  THR*     4.4     9.0    -      -       +      -
    310C  ALA*     4.4     0.4    -      -       +      -
    404C  MET*     3.0    46.0    +      -       +      -
    405C  GLY*     3.0    10.3    +      -       -      +
    407C  VAL*     1.3    77.0    -      -       +      +
    409C  TRP*     1.3    57.9    +      -       -      +
    411C  ILE*     3.1    11.8    +      -       +      +
    412C  ALA*     2.9    30.7    +      -       -      +
    467C  MET*     3.6    27.7    -      -       +      +
    470C  ILE*     4.2    18.2    -      -       +      -
    471C  MET*     4.2    11.7    -      -       +      -
    474C  CYS*     6.0     0.2    -      -       -      -
    488C  ILE*     3.7    24.9    -      -       +      -
    492C  LEU*     3.8    13.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with TRP 409 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405C  GLY      3.0     8.1    +      -       -      +
    406C  LEU*     3.1    11.7    -      -       -      +
    407C  VAL      3.0     0.4    -      -       -      -
    408C  PHE*     1.3    77.1    -      -       -      +
    410C  GLU*     1.3    79.3    +      -       +      +
    411C  ILE      3.1     0.5    +      -       -      -
    412C  ALA      3.5     0.2    +      -       -      -
    413C  ARG*     3.1    57.5    +      -       -      +
    425C  GLN      3.1    22.4    -      -       -      -
    426C  LEU      3.5    10.3    -      -       -      -
    427C  PRO*     3.6    18.2    -      -       +      -
    428C  TYR      5.0     0.9    -      -       -      -
    429C  TYR*     3.6    26.9    -      +       -      -
    452C  PRO*     3.5    26.3    -      -       +      +
    453C  ASN*     3.2    28.6    +      -       +      -
    455C  PRO*     4.5     1.0    -      -       +      +
    458C  TRP*     3.6    18.8    -      +       -      -
    471C  MET*     3.1    37.4    -      -       +      +
    475C  TRP*     3.8     6.5    -      +       +      -
----------------------------------------------------------
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Residues in contact with GLU 410 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    292C  LEU*     3.8    10.5    -      -       +      +
    336C  SER*     2.8    23.6    +      -       -      -
    378C  TYR*     2.6    36.3    +      -       -      -
    406C  LEU      3.3     9.5    -      -       -      +
    407C  VAL*     2.9    16.8    +      -       +      +
    409C  TRP*     1.3    86.3    -      -       +      +
    411C  ILE*     1.3    62.0    +      -       -      +
    413C  ARG*     3.6    13.2    -      -       -      +
    414C  ARG*     3.7    13.0    -      -       -      +
    424C  TYR*     2.6    38.7    +      -       +      -
    425C  GLN      4.0     7.0    -      -       -      +
    427C  PRO*     3.7    18.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 411 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    288C  LEU*     4.1    21.8    -      -       +      -
    292C  LEU*     4.0    20.8    -      -       +      +
    297C  VAL*     4.6     5.0    -      -       +      +
    302C  MET*     3.7    33.4    -      -       +      +
    305C  LEU*     4.1    28.9    -      -       +      +
    306C  ALA*     4.4    10.1    -      -       +      +
    309C  THR*     5.3     1.1    -      -       -      +
    407C  VAL*     3.0    19.5    +      -       +      +
    408C  PHE*     3.3    19.5    -      -       +      +
    409C  TRP      3.0     0.4    -      -       -      -
    410C  GLU*     1.3    74.1    -      -       -      +
    412C  ALA*     1.3    61.4    +      -       -      +
    413C  ARG      3.1     1.1    -      -       -      -
    414C  ARG*     2.9    24.4    +      -       -      +
    415C  CYS*     3.5     6.1    +      -       -      +
    467C  MET*     4.8     1.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 412 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302C  MET*     3.9    25.8    -      -       -      -
    408C  PHE      2.9    17.8    +      -       -      +
    411C  ILE*     1.3    72.9    -      -       -      +
    413C  ARG*     1.3    58.6    +      -       -      +
    415C  CYS*     2.9    25.6    +      -       -      +
    457C  ARG*     4.1     0.9    +      -       -      -
    458C  TRP*     3.7    38.1    +      -       +      -
    464C  LEU*     4.2     7.6    -      -       +      +
    467C  MET*     4.4    10.5    -      -       +      -
    471C  MET*     5.0     0.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 413 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409C  TRP*     3.1    58.1    +      -       -      +
    410C  GLU*     3.6     8.5    -      -       -      +
    412C  ALA*     1.3    77.3    -      -       -      +
    414C  ARG*     1.3    61.7    +      -       +      +
    415C  CYS      3.4     1.0    +      -       -      -
    421C  HIS*     4.1     1.2    -      -       -      +
    422C  GLU*     3.0    65.5    +      -       +      +
    423C  ASP*     2.4    37.4    +      -       -      +
    425C  GLN*     3.7    18.9    -      -       -      +
    429C  TYR*     3.0    30.1    +      -       -      -
    455C  PRO*     5.6     3.6    -      -       -      +
    457C  ARG*     4.1     0.3    +      -       -      -
    458C  TRP*     3.5    12.5    -      -       +      -
----------------------------------------------------------
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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