Contacts of the helix formed by residues 309 - 336 (chain C) in PDB entry 4WLU


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 SER 309 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210C  SER*     4.1    10.3    +      -       -      -
    308C  VAL*     1.3    78.8    -      -       -      +
    310C  SER*     1.3    54.6    +      -       -      +
    311C  PHE*     3.5    10.8    +      -       -      +
    312C  GLU*     3.0    36.7    +      -       -      +
    313C  GLU*     2.8    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 310 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309C  SER*     1.3    72.2    -      -       -      +
    311C  PHE*     1.3    59.8    +      -       -      +
    313C  GLU*     3.8     9.9    -      -       -      +
    314C  LYS*     2.9    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 311 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220C  GLN*     3.9    25.8    -      -       -      +
    223C  LEU*     3.7    30.3    -      -       +      -
    224C  THR*     4.2    20.9    -      -       +      -
    227C  THR*     3.7    24.0    -      -       +      -
    309C  SER*     3.5    10.7    +      -       -      +
    310C  SER*     1.3    80.2    -      -       -      +
    312C  GLU*     1.3    64.4    +      -       +      +
    314C  LYS*     3.4     5.7    +      -       +      +
    315C  MET*     3.1    53.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 312 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206C  ILE*     4.4     0.7    -      -       -      +
    207C  PRO      4.1     2.6    -      -       -      +
    208C  LEU*     3.9    22.7    -      -       +      +
    209C  ILE*     3.1    11.1    +      -       -      +
    210C  SER*     2.6    48.7    +      -       -      -
    223C  LEU*     6.1     1.0    -      -       -      +
    308C  VAL*     3.3    16.7    -      -       +      +
    309C  SER*     3.0    31.3    +      -       -      +
    311C  PHE*     1.3    75.8    -      -       +      +
    313C  GLU*     1.3    66.2    +      -       -      +
    315C  MET*     3.0    23.8    +      -       +      +
    316C  ILE*     2.9    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 313 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308C  VAL*     4.0    21.6    -      -       +      +
    309C  SER      2.8    22.6    +      -       -      +
    310C  SER*     3.8     9.7    -      -       -      +
    312C  GLU*     1.3    71.3    -      -       -      +
    314C  LYS*     1.3    61.9    +      -       -      +
    316C  ILE*     3.3    10.0    +      -       +      +
    317C  SER*     3.1    22.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 314 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310C  SER      2.9    18.4    +      -       -      +
    311C  PHE*     3.5     8.1    -      -       +      +
    312C  GLU      3.2     0.2    -      -       -      -
    313C  GLU*     1.3    77.6    -      -       -      +
    315C  MET*     1.3    62.0    +      -       +      +
    317C  SER*     3.3    10.5    +      -       -      -
    318C  ASP*     2.8    60.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 315 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203C  LYS*     4.6     4.4    -      -       -      +
    206C  ILE*     3.8    28.1    -      -       +      +
    207C  PRO*     4.4     8.1    -      -       +      +
    227C  THR*     3.6    28.0    -      -       +      +
    231C  GLN*     4.0    13.5    -      -       -      +
    311C  PHE*     3.1    46.9    +      -       +      +
    312C  GLU*     3.0    28.8    +      -       +      +
    314C  LYS*     1.3    76.1    -      -       +      +
    316C  ILE*     1.3    62.8    +      -       -      +
    318C  ASP*     3.4     7.0    +      -       -      +
    319C  ALA*     3.0    24.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 316 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197C  ILE*     3.9    24.7    -      -       +      -
    206C  ILE*     3.7    20.9    -      -       +      -
    208C  LEU*     5.2     1.1    -      -       +      -
    283C  THR*     4.8     7.4    -      -       +      -
    288C  PHE*     4.4    17.4    -      -       +      -
    305C  ILE*     4.0    22.0    -      -       +      -
    308C  VAL*     4.4     9.4    -      -       +      -
    312C  GLU      2.9    20.3    +      -       -      +
    313C  GLU*     3.5    15.7    -      -       +      +
    314C  LYS      3.3     0.2    -      -       -      -
    315C  MET*     1.3    75.3    -      -       -      +
    317C  SER*     1.3    62.4    +      -       -      +
    319C  ALA*     3.1    11.8    +      -       -      +
    320C  ILE*     3.3    27.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 317 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313C  GLU*     3.1    10.8    +      -       -      -
    314C  LYS*     3.3    14.4    +      -       -      -
    316C  ILE*     1.3    80.1    -      -       -      +
    318C  ASP*     1.3    67.1    +      -       -      +
    319C  ALA      3.4     0.7    +      -       -      -
    320C  ILE*     3.6    13.0    +      -       -      +
    321C  PRO*     3.5    16.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 318 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203C  LYS*     3.5    28.2    +      -       +      +
    314C  LYS*     2.8    57.8    +      -       -      +
    315C  MET*     3.4     6.9    +      -       -      +
    317C  SER*     1.3    80.6    +      -       -      +
    319C  ALA*     1.3    60.3    +      -       -      +
    320C  ILE      3.5     0.2    -      -       -      -
    321C  PRO*     3.7    11.8    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 319 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203C  LYS*     3.8    26.9    -      -       -      +
    204C  THR*     3.9    11.6    -      -       +      +
    206C  ILE*     3.9    14.1    -      -       +      -
    288C  PHE*     6.0     0.7    -      -       +      -
    315C  MET      3.0    16.6    +      -       -      +
    316C  ILE      3.1     5.4    +      -       -      +
    318C  ASP*     1.3    78.7    -      -       -      +
    320C  ILE*     1.3    64.7    +      -       -      +
    321C  PRO      3.4     0.4    -      -       -      -
    322C  GLU*     3.2     7.3    +      -       -      +
    323C  LEU*     3.1    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 320 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283C  THR*     4.6    12.8    -      -       +      -
    284C  GLU*     3.7    44.0    -      -       +      +
    285C  CYS*     3.8    19.5    -      -       -      -
    288C  PHE*     5.1     4.5    -      -       +      -
    316C  ILE*     3.3    29.8    +      -       +      +
    317C  SER*     3.9    11.7    -      -       -      +
    318C  ASP      3.5     0.2    -      -       -      -
    319C  ALA*     1.3    76.1    -      -       -      +
    321C  PRO*     1.3    66.9    -      -       +      +
    323C  LEU*     3.3     2.0    +      -       -      +
    324C  LYS*     2.9    41.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 321 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317C  SER      3.5    13.2    -      -       -      +
    318C  ASP*     3.7    10.3    -      -       -      +
    319C  ALA      3.6     3.1    -      -       -      -
    320C  ILE*     1.3    95.9    -      -       +      +
    322C  GLU*     1.3    60.9    +      -       -      +
    324C  LYS*     3.9     6.3    -      -       +      +
    325C  ALA*     3.1    25.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 322 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145C  ASN*     5.3     0.9    -      -       -      +
    201C  ALA*     4.0    24.5    -      -       -      +
    202C  GLY*     5.3     0.7    -      -       -      -
    203C  LYS*     3.1    36.2    +      -       -      +
    204C  THR*     3.6    17.5    -      -       +      -
    318C  ASP      5.0     1.0    +      -       -      -
    319C  ALA      3.2     8.8    +      -       -      +
    321C  PRO*     1.3    75.8    -      -       -      +
    323C  LEU*     1.3    59.3    +      -       -      +
    325C  ALA*     3.2     7.4    +      -       -      +
    326C  SER*     2.9    37.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 323 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145C  ASN*     3.6    33.7    -      -       +      +
    198C  GLY*     4.1    10.5    -      -       -      +
    199C  GLY*     3.9     9.6    -      -       -      +
    204C  THR*     3.8    14.8    -      -       +      -
    277C  PHE*     4.2    10.8    -      -       +      -
    285C  CYS*     3.9    13.5    -      -       -      -
    287C  TYR      4.8     1.6    -      -       -      +
    288C  PHE*     3.7    36.6    -      -       +      -
    319C  ALA*     3.1    23.5    +      -       +      +
    320C  ILE*     3.7     6.7    -      -       -      +
    322C  GLU*     1.3    76.6    -      -       -      +
    324C  LYS*     1.3    56.7    +      -       -      +
    326C  SER*     3.2     5.2    +      -       -      -
    327C  ILE*     2.8    39.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 324 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284C  GLU*     3.0    36.2    +      -       +      +
    285C  CYS*     4.1    19.3    -      -       -      -
    320C  ILE*     2.9    34.0    +      -       +      +
    321C  PRO*     3.9     6.1    -      -       +      +
    323C  LEU*     1.3    72.8    -      -       -      +
    325C  ALA*     1.3    57.7    +      -       -      +
    327C  ILE*     3.7     8.4    -      -       +      +
    328C  LYS*     2.9    31.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 325 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321C  PRO      3.1    18.7    +      -       -      +
    322C  GLU*     3.6     7.0    -      -       -      +
    324C  LYS*     1.3    77.1    -      -       -      +
    326C  SER*     1.3    57.1    +      -       -      +
    328C  LYS*     3.5     7.5    +      -       -      +
    329C  LYS*     3.0    29.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 326 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111C  ASP*     5.1     6.5    +      -       -      +
    143C  PRO*     6.1     0.6    -      -       -      +
    145C  ASN*     3.6    31.3    +      -       -      +
    146C  SER*     2.9    28.7    +      -       -      -
    322C  GLU*     2.9    27.6    +      -       -      +
    323C  LEU*     3.6     4.7    -      -       -      -
    325C  ALA*     1.3    72.1    -      -       -      +
    327C  ILE*     1.3    65.3    +      -       -      +
    329C  LYS*     3.4     6.2    +      -       -      +
    330C  GLY      3.2    12.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 327 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145C  ASN      4.0     9.9    -      -       -      +
    149C  PRO*     3.8     9.5    -      -       +      +
    277C  PHE*     4.5     3.8    -      -       +      -
    285C  CYS*     4.1    11.0    -      -       +      -
    286C  THR*     3.6    16.4    -      -       -      +
    287C  TYR*     3.6    53.2    -      -       +      +
    323C  LEU*     2.8    33.5    +      -       +      +
    324C  LYS*     3.7     8.1    -      -       +      +
    326C  SER*     1.3    72.4    -      -       -      +
    328C  LYS*     1.3    63.7    +      -       -      +
    330C  GLY*     3.2     3.8    +      -       -      -
    331C  GLU*     3.0    44.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 328 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324C  LYS      2.9    18.9    +      -       -      +
    325C  ALA*     3.8     6.3    -      -       -      +
    327C  ILE*     1.3    76.4    -      -       -      +
    329C  LYS*     1.3    53.3    +      -       -      +
    331C  GLU*     3.2    14.3    +      -       -      +
    332C  ASP*     2.8    72.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 329 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111C  ASP*     3.0    41.1    +      -       -      +
    114C  PHE*     3.6    42.7    -      -       +      +
    146C  SER*     4.4     2.5    -      -       -      +
    325C  ALA      3.0    18.4    +      -       -      +
    326C  SER*     3.5     9.0    -      -       -      +
    327C  ILE      3.2     0.2    -      -       -      -
    328C  LYS*     1.3    76.7    -      -       -      +
    330C  GLY*     1.3    61.5    +      -       -      +
    332C  ASP*     3.9     6.6    -      -       -      +
    333C  PHE*     3.1    22.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 330 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  PHE*     4.2     1.3    -      -       -      -
    146C  SER*     3.7    15.4    -      -       -      -
    149C  PRO*     4.5     0.2    -      -       -      -
    150C  ILE*     3.4    37.9    -      -       -      +
    326C  SER      3.2     5.3    +      -       -      -
    327C  ILE      3.2     6.9    +      -       -      -
    329C  LYS*     1.3    76.9    -      -       -      +
    331C  GLU*     1.3    63.4    +      -       -      +
    333C  PHE*     3.2     9.2    +      -       -      +
    334C  VAL*     3.3    11.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 331 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149C  PRO*     4.3     9.1    -      -       +      +
    153C  GLU*     4.2    32.3    -      -       +      +
    286C  THR*     4.1     6.2    +      -       -      +
    287C  TYR*     4.1     9.8    +      -       +      -
    327C  ILE*     3.0    34.4    +      -       -      +
    328C  LYS*     3.6    18.0    -      -       -      +
    330C  GLY*     1.3    74.8    -      -       -      +
    332C  ASP*     1.3    67.2    +      -       -      +
    334C  VAL*     3.2     6.1    +      -       -      +
    335C  LYS*     3.1    32.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 332 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328C  LYS*     2.8    59.5    +      -       -      +
    329C  LYS*     3.9     6.3    -      -       -      +
    331C  GLU*     1.3    76.9    -      -       -      +
    333C  PHE*     1.3    61.2    +      -       -      +
    335C  LYS*     3.4    15.9    +      -       -      +
    336C  THR*     3.3    22.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 333 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114C  PHE*     3.7    17.9    -      +       +      -
    115C  ASN*     5.8     2.2    -      -       -      -
    118C  ALA*     3.5    36.3    -      -       +      -
    119C  THR*     3.5    33.4    -      -       +      -
    122C  ALA*     3.9     4.9    -      -       +      -
    150C  ILE*     4.0     9.0    -      -       +      -
    329C  LYS      3.1    14.9    +      -       -      +
    330C  GLY*     3.5     8.1    -      -       -      +
    331C  GLU      3.2     0.4    -      -       -      -
    332C  ASP*     1.3    77.6    -      -       -      +
    334C  VAL*     1.3    68.4    +      -       +      +
    336C  THR*     2.7    28.9    +      -       -      -
    337C  LEU*     3.6    37.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 334 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150C  ILE*     3.7    40.4    -      -       +      +
    153C  GLU*     3.8    33.2    -      -       +      +
    154C  VAL*     4.2    12.6    -      -       +      -
    157C  LYS*     5.7     4.9    -      -       +      -
    330C  GLY      3.3    13.4    +      -       -      +
    331C  GLU      3.2     7.4    +      -       -      +
    333C  PHE*     1.3    75.3    -      -       +      +
    335C  LYS*     1.3    67.5    +      -       -      +
    337C  LEU*     3.1    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 335 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153C  GLU*     3.2    31.9    +      -       -      +
    331C  GLU*     3.1    24.8    +      -       -      +
    332C  ASP*     3.5    15.3    -      -       -      +
    333C  PHE      3.2     0.4    -      -       -      -
    334C  VAL*     1.3    76.8    -      -       -      +
    336C  THR*     1.3    58.6    +      -       +      +
    337C  LEU      3.2     7.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 336 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    332C  ASP      3.3    15.0    -      -       -      +
    333C  PHE*     2.7    24.9    +      -       -      -
    334C  VAL      3.1     0.2    -      -       -      -
    335C  LYS*     1.3    78.9    -      -       +      +
    337C  LEU*     1.3    66.8    +      -       -      +
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A short description of the analytical approach
The contact analysis used in this page is based upon the approach developed in: Sobolev V., Wade R.C., Vriend G. and Edelman M. PROTEINS (1996) 25, 120-129. Contact legitimacy depends on the hydrophobic-hydrophilic properties of the contacting atoms. In order to define it, for each inter-atomic contact, eight atom classes have been introduced:


   I  Hydrophilic      - N and O that can donate and accept hydrogen bonds
                         (e.g., oxygen of hydroxyl group of Ser. or Thr)
  II  Acceptor         - N or O that can only accept a hydrogen bond
 III  Donor            - N that can only donate a hydrogen bond
  IV  Hydrophobic      - Cl, Br, I and all C atoms that are not in
                         aromatic rings and do not have a covalent bond to
                         a N or O atom
   V  Aromatic         - C in aromatic rings irrespective of any other 
                         bonds formed by the atom
  VI  Neutral          - C atoms that have a covalent bond to at least one
                         atom of class I or two or more atoms from class II
                         or III; atoms; S, F, P, and metal atoms in all cases
 VII  Neutral-donor    - C atoms that have a covalent bond with only one
                         atom of class III
VIII  Neutral-acceptor - C atoms that have a covalent bond with only 
                         one atom of class II
For each pair of contacts the state of legitimacy is shown below:

Legend:
+, legitimate
-, illegitimate
------------------------------------------------------------
  Atomic class           I  II  III   IV   V   VI  VII  VIII
------------------------------------------------------------
   I  (Hydrophilic)      +   +    +    -   +   +    +    +
  II  (Acceptor)         +   -    +    -   +   +    +    -
 III  (Donor)            +   +    -    -   +   +    -    +
  IV  (Hydrophobic)      -   -    -    +   +   +    +    +
   V  (Aromatic)         +   +    +    +   +   +    +    +
  VI  (Neutral)          +   +    +    +   +   +    +    +
 VII  (Neutral-donor)    +   +    -    +   +   +    -    +
VIII  (Neutral-acceptor) +   -    +    +   +   +    +    -
------------------------------------------------------------
Warning!
Atom classes for heterogroups are automatically assigned based on the atomic coordinates. However, in three cases (see below) the automatic assignment is currently ambiguous. In these cases, the user is advised to manually analyse the full list of contacts using LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are 
   considered "aromatic" (Class V) if the ring is approximately
   planar, and "hydrophobic" (Class IV) or "neutral" (Classes
   VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
   "hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
   "carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).

Please E-mail any questions and/or suggestions concerning this page to Vladimir.Sobolev@weizmann.ac.il