Contacts of the helix formed by residues 316 - 339 (chain C) in PDB entry 3RMD


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 ASN 316 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    312C  LEU*     3.1    21.6    +      -       +      +
    315C  SER*     1.3    83.4    -      -       -      +
    317C  HIS*     1.3    60.9    +      -       -      +
    318C  GLN*     3.0    11.8    +      -       -      +
    319C  ARG*     3.1    33.5    +      -       +      +
    320C  TYR      3.1    15.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 317 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134C  ASP      5.2     0.2    +      -       -      -
    150C  ASP*     3.1    40.0    +      -       -      -
    151C  LEU      3.7     1.6    +      -       -      -
    152C  LEU*     5.2     0.4    -      -       -      +
    159C  VAL*     3.1    41.7    -      -       +      +
    160C  GLU      3.8    13.4    +      -       -      -
    161C  GLU      5.1     3.4    +      -       -      -
    162C  TRP*     5.0     1.7    +      -       -      -
    188C  TYR*     4.5     1.8    -      -       -      -
    313C  ARG*     3.0    54.9    +      -       -      +
    314C  GLU      3.7     2.8    +      -       -      +
    316C  ASN*     1.3    71.8    -      -       -      +
    318C  GLN*     1.3    65.0    +      -       -      +
    320C  TYR*     3.5     7.2    -      +       -      +
    321C  ILE*     3.4    35.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 318 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    161C  GLU      4.2     4.0    +      -       -      -
    162C  TRP*     3.3    23.1    -      -       -      +
    163C  SER      2.9    45.0    +      -       -      +
    166C  ILE*     3.1    38.3    -      -       +      +
    176C  ASP*     3.2    22.2    -      -       -      +
    316C  ASN*     3.0    10.4    +      -       -      +
    317C  HIS*     1.3    82.4    -      -       -      +
    319C  ARG*     1.3    64.9    +      -       -      +
    321C  ILE      3.3     4.5    +      -       -      -
    322C  SER*     2.9    15.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 319 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    171C  GLN*     4.3    12.5    +      -       -      +
    174C  GLY      5.3     1.4    -      -       -      -
    175C  GLY      2.8    26.6    +      -       -      +
    176C  ASP*     3.4    26.9    +      -       -      +
    303C  LEU*     3.0    50.3    -      -       -      +
    304C  LYS      5.5     4.7    +      -       -      -
    305C  TYR*     4.0    26.3    -      -       +      +
    312C  LEU*     4.5     3.1    -      -       +      -
    316C  ASN*     3.1    30.1    +      -       +      +
    318C  GLN*     1.3    79.1    -      -       -      +
    320C  TYR*     1.3    56.7    +      -       -      +
    322C  SER*     2.8     6.5    +      -       -      -
    323C  TYR*     2.7    41.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 320 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116C  GLU*     3.4    32.2    +      -       +      +
    117C  VAL      3.9     7.1    +      -       -      -
    118C  THR*     3.4     9.9    +      -       -      -
    134C  ASP*     2.5    30.4    +      -       -      -
    135C  ALA*     4.1     7.2    -      -       +      -
    309C  ILE*     4.5    12.4    -      -       +      +
    312C  LEU*     3.2    40.7    -      -       +      +
    313C  ARG*     3.4    34.1    -      -       +      -
    316C  ASN      3.1    11.1    +      -       -      +
    317C  HIS*     3.5    16.2    -      +       -      +
    319C  ARG*     1.3    79.6    -      -       -      +
    321C  ILE*     1.3    71.9    +      -       +      +
    323C  TYR*     3.4    12.0    -      +       -      +
    324C  ASN*     3.4    15.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 321 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    134C  ASP      4.6     0.2    -      -       -      +
    135C  ALA*     3.9    19.5    -      -       +      -
    148C  VAL*     4.2    16.6    -      -       +      -
    150C  ASP*     3.6    26.2    -      -       +      +
    162C  TRP*     3.5    35.2    -      -       +      -
    188C  TYR*     4.3     1.8    -      -       +      -
    317C  HIS*     3.4    27.8    +      -       +      +
    318C  GLN      3.3     1.8    +      -       -      +
    319C  ARG      2.9     1.8    +      -       -      -
    320C  TYR*     1.3    88.4    -      -       +      +
    322C  SER*     1.3    68.3    +      -       -      +
    323C  TYR      3.1     0.9    -      -       -      -
    324C  ASN*     3.1     6.8    +      -       +      +
    325C  ILE*     3.0    35.0    +      -       +      +
----------------------------------------------------------
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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
----------------------------------------------------------
    162C  TRP*     2.9    11.8    +      -       -      +
    176C  ASP*     2.5    48.9    +      -       -      -
    178C  VAL*     3.9    10.4    -      -       -      +
    318C  GLN      2.9     9.4    +      -       -      -
    319C  ARG*     2.8     7.9    +      -       -      -
    321C  ILE*     1.3    75.4    -      -       -      +
    323C  TYR*     1.3    55.0    +      -       -      +
    325C  ILE*     3.0    11.0    +      -       -      +
    326C  ILE*     2.5    40.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 323 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  ASP*     5.6     1.1    -      -       -      -
    116C  GLU*     3.5    27.8    -      -       -      -
    302C  LYS*     3.1    51.5    -      -       +      -
    303C  LEU*     5.0     1.3    -      -       +      +
    305C  TYR*     4.2    28.4    +      +       -      -
    309C  ILE*     5.6    10.0    -      -       +      +
    312C  LEU*     4.9    10.8    -      -       +      -
    319C  ARG*     2.7    29.7    +      -       +      +
    320C  TYR*     3.4    13.9    -      +       -      +
    322C  SER*     1.3    73.9    -      -       -      +
    324C  ASN*     1.3    58.3    +      -       -      +
    326C  ILE*     3.5    11.2    -      -       -      +
    327C  ALA*     3.1    28.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 324 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  ASP*     3.3    26.3    +      -       -      +
    116C  GLU*     2.8    41.3    -      -       +      +
    135C  ALA*     3.6    11.7    -      -       +      +
    136C  ILE      3.6     7.8    +      -       -      -
    137C  THR*     2.8    28.0    +      -       -      +
    148C  VAL*     5.6     1.1    -      -       -      +
    320C  TYR      3.4     5.3    +      -       -      +
    321C  ILE*     3.1    13.6    +      -       +      +
    323C  TYR*     1.3    78.3    -      -       -      +
    325C  ILE*     1.3    64.4    +      -       -      +
    327C  ALA*     3.2    15.0    -      -       -      +
    328C  VAL*     3.4     6.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 325 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    137C  THR*     3.9    22.4    -      -       +      +
    146C  PHE*     4.4     7.2    -      -       +      -
    148C  VAL*     3.9    22.4    -      -       +      -
    162C  TRP*     3.8    29.4    -      -       +      -
    178C  VAL*     5.1     5.6    -      -       +      -
    182C  ILE*     3.7    24.0    -      -       +      -
    186C  ILE*     4.1    13.5    -      -       +      -
    321C  ILE*     3.2    32.1    -      -       +      +
    322C  SER*     3.0     7.5    +      -       -      +
    324C  ASN*     1.3    76.7    -      -       -      +
    326C  ILE*     1.3    63.0    +      -       +      +
    328C  VAL*     3.4     5.7    +      -       -      +
    329C  TYR*     3.1    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 326 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176C  ASP      4.8     5.8    -      -       -      +
    177C  GLU      5.8     0.7    -      -       -      +
    178C  VAL*     5.2     7.1    -      -       +      +
    179C  PRO*     4.4    19.3    -      -       +      -
    182C  ILE*     5.5     0.9    -      -       -      -
    301C  GLY      5.1     0.2    -      -       -      +
    302C  LYS*     3.3    31.6    -      -       +      +
    303C  LEU*     4.2    29.4    -      -       +      -
    319C  ARG*     6.0     0.7    -      -       -      -
    322C  SER*     2.5    31.1    +      -       -      +
    323C  TYR*     3.4    10.3    -      -       -      +
    325C  ILE*     1.3    70.6    -      -       -      +
    327C  ALA*     1.3    67.0    -      -       -      +
    329C  TYR*     2.9     9.5    +      -       +      +
    330C  ARG*     2.8    55.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 327 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  ASP*     3.8    21.3    -      -       -      +
    116C  GLU*     5.2     0.7    -      -       -      +
    290C  LEU*     3.4    23.6    -      -       +      +
    302C  LYS*     3.6    12.7    -      -       -      +
    323C  TYR*     3.1    19.8    +      -       +      +
    324C  ASN*     3.2    13.9    -      -       -      +
    326C  ILE*     1.3    78.1    -      -       -      +
    328C  VAL*     1.3    64.0    +      -       -      +
    330C  ARG*     3.2    15.0    +      -       -      +
    331C  VAL*     3.5     3.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 328 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  ASN*     3.4    34.3    -      -       -      +
    113C  PHE      4.5     0.7    -      -       -      -
    114C  ASP*     3.9    18.2    -      -       +      +
    137C  THR*     3.6    33.2    -      -       +      +
    139C  TYR*     4.0     8.5    -      -       +      +
    146C  PHE*     4.0    19.7    -      -       +      -
    324C  ASN      3.4    14.6    -      -       -      +
    325C  ILE      3.6     5.8    -      -       -      +
    326C  ILE      3.2     0.4    -      -       -      -
    327C  ALA*     1.3    75.7    -      -       -      +
    329C  TYR*     1.3    64.0    +      -       -      +
    330C  ARG      3.2     0.7    +      -       -      -
    331C  VAL*     3.2    15.8    +      -       -      +
    332C  LEU*     3.2    12.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 329 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146C  PHE*     3.9    18.8    -      +       +      -
    179C  PRO*     3.6    36.1    -      -       +      +
    181C  GLU*     3.9    20.5    -      -       +      +
    182C  ILE*     3.3    36.1    -      -       +      -
    325C  ILE      3.1    10.7    +      -       -      +
    326C  ILE*     2.9    11.5    +      -       +      +
    328C  VAL*     1.3    79.7    -      -       -      +
    330C  ARG*     1.3    54.2    +      -       -      +
    332C  LEU*     3.0    13.7    +      -       +      +
    333C  GLN*     2.8    81.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 330 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    179C  PRO*     4.5    13.3    -      -       -      +
    290C  LEU*     4.2    11.4    -      -       +      -
    294C  SER*     4.1    22.0    -      -       -      -
    298C  LEU*     3.8     4.2    -      -       -      +
    300C  VAL*     3.0    44.7    -      -       -      +
    301C  GLY      2.6    34.4    +      -       -      +
    302C  LYS*     3.8    13.5    -      -       -      +
    303C  LEU*     6.1     2.7    -      -       -      +
    326C  ILE*     2.8    41.8    +      -       -      +
    327C  ALA*     3.3     8.7    -      -       -      +
    328C  VAL      3.2     0.2    +      -       -      -
    329C  TYR*     1.3    71.0    -      -       -      +
    331C  VAL*     1.3    55.0    +      -       -      +
    333C  GLN*     2.9    32.0    +      -       -      +
    334C  ILE*     2.6    40.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 331 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  ASN*     3.3    29.8    -      -       -      +
    214C  THR*     4.8     0.4    -      -       -      +
    215C  GLY*     4.5     3.8    -      -       -      +
    216C  TRP*     4.1    21.8    -      -       +      +
    273C  TYR*     3.8    36.8    -      -       +      -
    290C  LEU*     4.0    16.4    -      -       +      -
    327C  ALA      3.5    13.4    +      -       -      +
    328C  VAL*     3.2     5.1    +      -       -      +
    330C  ARG*     1.3    75.6    -      -       -      +
    332C  LEU*     1.3    54.1    +      -       -      +
    334C  ILE*     3.0    12.1    +      -       -      +
    335C  ASP*     2.8    33.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 332 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  ASN*     3.7    20.4    -      -       +      +
    139C  TYR*     3.6    42.0    -      -       +      +
    146C  PHE*     3.4    41.7    -      -       +      -
    328C  VAL*     3.2     9.2    +      -       +      +
    329C  TYR*     3.0    17.0    +      -       +      +
    331C  VAL*     1.3    80.2    -      -       -      +
    333C  GLN*     1.3    53.4    +      -       -      +
    335C  ASP*     3.4     7.7    +      -       +      +
    336C  ALA*     2.7    30.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 333 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298C  LEU*     3.4    23.7    -      -       +      +
    300C  VAL*     6.1     1.8    -      -       -      +
    329C  TYR*     2.8    69.1    +      -       +      +
    330C  ARG*     3.3    32.3    +      -       -      +
    332C  LEU*     1.3    71.1    -      -       -      +
    334C  ILE*     1.3    67.9    +      -       -      +
    336C  ALA*     3.1    10.1    +      -       -      +
    337C  LYS*     3.0    23.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 334 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216C  TRP*     4.1     6.1    -      -       +      -
    273C  TYR*     4.2    19.1    -      -       +      -
    277C  TYR*     4.3    15.7    -      -       +      -
    290C  LEU*     3.7    30.7    -      -       +      -
    293C  ILE*     4.1    11.9    -      -       +      -
    294C  SER*     3.9    18.6    -      -       -      -
    297C  GLU*     4.5     7.4    -      -       +      -
    298C  LEU*     3.9    23.1    -      -       +      -
    330C  ARG      2.6    20.9    +      -       -      +
    331C  VAL*     3.5     7.4    -      -       -      +
    333C  GLN*     1.3    72.4    -      -       -      +
    335C  ASP*     1.3    58.9    +      -       -      +
    337C  LYS*     3.2     3.6    +      -       -      +
    338C  ARG*     2.8    39.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 335 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112C  ASN*     6.1     0.7    -      -       -      +
    273C  TYR*     2.8    38.8    +      -       +      +
    331C  VAL*     2.8    15.7    +      -       +      +
    332C  LEU*     3.7     9.9    -      -       +      +
    334C  ILE*     1.3    69.5    -      -       -      +
    336C  ALA*     1.3    65.8    +      -       -      +
    337C  LYS      2.9     1.8    -      -       -      -
    339C  GLN*     2.5    34.9    +      -       -      -
    340C  PHE      3.1    14.7    +      -       -      -
    341C  ILE*     3.3    24.1    +      -       -      +
    342C  ASN      4.9     0.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 336 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332C  LEU      2.7    22.8    +      -       -      +
    333C  GLN*     3.2    12.8    -      -       -      +
    335C  ASP*     1.3    72.5    -      -       -      +
    337C  LYS*     1.3    58.4    +      -       -      +
    339C  GLN*     3.3    22.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 337 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296C  PHE      5.1     0.8    +      -       -      -
    297C  GLU*     3.0    56.7    +      -       +      +
    298C  LEU*     4.6     6.1    -      -       +      -
    333C  GLN      3.0    10.5    +      -       -      +
    334C  ILE*     3.5     7.0    -      -       -      +
    335C  ASP      2.9     1.4    -      -       -      -
    336C  ALA*     1.3    79.7    -      -       -      +
    338C  ARG*     1.3    76.9    +      -       +      +
    339C  GLN*     3.5     7.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 338 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273C  TYR*     4.1     1.6    -      -       -      +
    277C  TYR*     4.6     1.7    -      -       +      -
    280C  PHE      4.8     1.0    +      -       -      -
    281C  SER*     3.5    36.4    +      -       -      +
    283C  THR*     5.2     1.8    -      -       -      +
    296C  PHE*     6.1     0.2    -      -       -      -
    297C  GLU*     3.5    34.9    +      -       -      +
    334C  ILE*     2.8    34.4    +      -       +      +
    337C  LYS*     1.3    82.8    -      -       +      +
    339C  GLN*     1.3    73.2    +      -       -      +
    340C  PHE*     3.3    48.1    +      -       +      -
    343C  LEU*     5.7     0.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 339 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    335C  ASP*     2.5    29.5    +      -       -      -
    336C  ALA*     3.3    23.3    +      -       -      +
    337C  LYS      3.7    11.4    -      -       -      +
    338C  ARG*     1.3    77.0    -      -       -      +
    340C  PHE*     1.3    61.8    +      -       -      +
    341C  ILE      3.5     2.0    -      -       -      -
    342C  ASN*     3.8    17.9    +      -       +      +
    343C  LEU*     3.3    21.8    +      -       -      +
    550C  VAL*     4.4    18.0    -      -       -      +
----------------------------------------------------------
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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