Contacts of the helix formed by residues 309 - 335 (chain D) 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 D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    210D  SER*     4.0    10.7    +      -       -      -
    223D  LEU*     5.9     0.9    -      -       -      +
    308D  VAL*     1.3    75.7    -      -       -      +
    310D  SER*     1.3    59.7    +      -       -      +
    311D  PHE*     3.5    10.6    +      -       -      +
    312D  GLU*     3.0    36.8    +      -       -      +
    313D  GLU*     2.8    27.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 310 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    309D  SER*     1.3    71.2    -      -       -      +
    311D  PHE*     1.3    60.0    +      -       -      +
    313D  GLU*     3.7    10.8    -      -       -      +
    314D  LYS*     2.9    31.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 311 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    220D  GLN*     3.6    26.5    -      -       -      +
    223D  LEU*     3.6    31.2    -      -       +      -
    224D  THR*     4.2    17.0    -      -       +      -
    227D  THR*     3.7    24.5    -      -       +      -
    309D  SER*     3.5     8.6    +      -       -      +
    310D  SER*     1.3    79.8    +      -       -      +
    312D  GLU*     1.3    66.4    +      -       +      +
    314D  LYS*     3.4    25.7    +      -       +      +
    315D  MET*     3.2    54.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 312 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206D  ILE*     4.3     1.3    -      -       +      +
    207D  PRO      4.3     8.5    -      -       -      +
    208D  LEU*     3.8    22.8    -      -       +      +
    209D  ILE*     3.1    11.3    +      -       -      +
    210D  SER*     2.6    48.9    +      -       -      -
    223D  LEU*     6.1     0.7    -      -       -      +
    308D  VAL*     3.2    16.4    -      -       +      +
    309D  SER*     3.0    27.2    +      -       -      +
    311D  PHE*     1.3    78.2    -      -       +      +
    313D  GLU*     1.3    66.7    +      -       -      +
    315D  MET*     3.3    18.4    +      -       +      +
    316D  ILE*     3.0    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 313 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    308D  VAL*     4.2     9.9    -      -       +      +
    309D  SER      2.8    16.9    +      -       -      +
    310D  SER*     3.7    10.8    -      -       -      +
    312D  GLU*     1.3    75.8    -      -       -      +
    314D  LYS*     1.3    65.3    +      -       -      +
    316D  ILE*     3.2    20.6    +      -       -      +
    317D  SER*     2.9    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS 314 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310D  SER      2.9    19.1    +      -       -      +
    311D  PHE*     3.5    26.1    -      -       +      +
    312D  GLU      3.3     0.2    -      -       -      -
    313D  GLU*     1.3    76.4    -      -       -      +
    315D  MET*     1.3    55.1    +      -       +      +
    317D  SER*     3.3     8.4    +      -       -      -
    318D  ASP*     2.7    56.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET 315 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203D  LYS      4.7     3.6    -      -       -      +
    206D  ILE*     3.8    26.5    -      -       +      +
    207D  PRO*     4.4     8.1    -      -       +      +
    227D  THR*     3.6    27.4    -      -       +      -
    231D  GLN*     4.0    13.9    -      -       -      +
    311D  PHE*     3.2    49.4    +      -       +      +
    312D  GLU*     3.3    22.6    +      -       +      +
    314D  LYS*     1.3    75.8    -      -       +      +
    316D  ILE*     1.3    65.5    +      -       -      +
    318D  ASP*     3.2    11.0    +      -       -      +
    319D  ALA*     2.9    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 316 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    197D  ILE*     3.7    32.1    -      -       +      -
    206D  ILE*     3.6    15.9    -      -       +      +
    208D  LEU*     5.1     1.1    -      -       +      -
    283D  THR*     4.8     8.5    -      -       +      -
    288D  PHE*     4.5    12.1    -      -       +      -
    305D  ILE*     3.9    20.2    -      -       +      -
    308D  VAL*     4.5     9.2    -      -       +      -
    312D  GLU      3.0    22.4    +      -       -      +
    313D  GLU*     3.5    20.6    -      -       -      +
    315D  MET*     1.3    73.5    -      -       -      +
    317D  SER*     1.3    60.4    +      -       -      +
    319D  ALA*     3.0    12.1    +      -       -      +
    320D  ILE*     2.8    38.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 317 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    313D  GLU*     2.9    20.5    +      -       -      -
    314D  LYS*     3.4    11.7    -      -       -      -
    316D  ILE*     1.3    79.4    -      -       -      +
    318D  ASP*     1.3    63.6    +      -       -      +
    319D  ALA      3.3     0.3    +      -       -      -
    320D  ILE*     3.6    15.9    +      -       -      +
    321D  PRO*     3.6     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 318 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203D  LYS*     3.7    33.1    +      -       +      +
    314D  LYS*     2.7    45.1    +      -       -      +
    315D  MET*     3.2     9.6    +      -       -      +
    317D  SER*     1.3    74.8    +      -       -      +
    319D  ALA*     1.3    60.7    +      -       -      +
    321D  PRO*     3.5    12.1    -      -       -      +
    322D  GLU*     5.0     1.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 319 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    203D  LYS*     3.9     9.0    -      -       -      +
    204D  THR*     3.9    24.9    -      -       +      -
    206D  ILE*     3.8    19.1    -      -       +      -
    288D  PHE*     6.0     0.2    -      -       +      -
    315D  MET      2.9    16.3    +      -       -      +
    316D  ILE      3.0     5.3    +      -       -      +
    318D  ASP*     1.3    77.9    -      -       -      +
    320D  ILE*     1.3    64.8    +      -       +      +
    321D  PRO      3.4     0.2    -      -       -      -
    322D  GLU*     3.2     7.0    +      -       -      +
    323D  LEU*     3.1    29.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 320 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    283D  THR*     5.1     7.6    -      -       -      +
    284D  GLU*     3.8    25.6    -      -       +      +
    285D  CYS*     3.8    21.1    -      -       -      -
    288D  PHE*     4.9     9.0    -      -       +      -
    316D  ILE*     2.8    47.3    +      -       +      +
    317D  SER*     4.0     8.7    -      -       -      +
    318D  ASP      3.5     0.2    -      -       -      -
    319D  ALA*     1.3    75.7    -      -       +      +
    321D  PRO*     1.3    67.0    -      -       +      +
    323D  LEU*     3.3     1.5    +      -       -      +
    324D  LYS*     2.9    52.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with PRO 321 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    317D  SER      3.6     8.3    -      -       -      +
    318D  ASP*     3.5    14.4    -      -       -      +
    319D  ALA      3.4     4.3    -      -       -      -
    320D  ILE*     1.3   100.2    -      -       +      +
    322D  GLU*     1.3    60.3    +      -       -      +
    324D  LYS*     3.6     9.2    +      -       +      +
    325D  ALA*     3.1    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 322 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  ASN*     5.1     0.8    +      -       -      +
    201D  ALA*     3.9    20.5    -      -       -      +
    202D  GLY*     5.5     0.6    -      -       -      -
    203D  LYS*     3.3    35.5    +      -       +      +
    204D  THR*     3.7    17.4    -      -       +      +
    318D  ASP      5.0     1.3    +      -       -      +
    319D  ALA      3.2     8.9    +      -       -      +
    321D  PRO*     1.3    76.3    -      -       -      +
    323D  LEU*     1.3    67.9    +      -       -      +
    325D  ALA*     3.1     7.4    +      -       +      +
    326D  SER*     3.0    33.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 323 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  ASN*     3.6    32.0    -      -       +      +
    198D  GLY*     4.1    10.5    -      -       -      +
    199D  GLY*     3.9     9.4    -      -       -      +
    204D  THR*     3.8    17.0    -      -       +      -
    277D  PHE*     4.1    12.1    -      -       +      -
    285D  CYS*     3.8    13.7    -      -       -      -
    287D  TYR      4.8     1.6    -      -       -      +
    288D  PHE*     3.6    38.4    -      -       +      -
    319D  ALA*     3.1    24.6    +      -       +      +
    320D  ILE*     3.7     3.8    -      -       -      +
    322D  GLU*     1.3    76.9    -      -       -      +
    324D  LYS*     1.3    63.5    +      -       -      +
    326D  SER*     3.3     4.7    +      -       -      -
    327D  ILE*     3.0    33.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 324 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    284D  GLU*     3.4    33.5    +      -       +      +
    285D  CYS*     4.2    15.0    -      -       -      -
    320D  ILE*     2.9    33.2    +      -       +      +
    321D  PRO*     3.7     7.8    -      -       +      +
    323D  LEU*     1.3    76.0    -      -       -      +
    325D  ALA*     1.3    57.4    +      -       -      +
    327D  ILE*     3.4     9.9    +      -       +      +
    328D  LYS*     2.9    31.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 325 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    321D  PRO      3.1    14.2    +      -       -      +
    322D  GLU*     3.1     9.7    +      -       +      +
    324D  LYS*     1.3    78.3    -      -       -      +
    326D  SER*     1.3    58.6    +      -       -      +
    328D  LYS*     3.4     7.4    +      -       -      +
    329D  LYS*     3.0    29.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 326 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111D  ASP*     5.0     9.3    +      -       -      +
    143D  PRO*     6.0     0.7    -      -       -      +
    145D  ASN*     3.7    30.2    +      -       -      +
    146D  SER*     2.7    32.3    +      -       -      -
    322D  GLU*     3.0    20.4    +      -       -      +
    323D  LEU*     3.7     6.7    -      -       -      -
    325D  ALA*     1.3    71.8    -      -       -      +
    327D  ILE*     1.3    66.3    +      -       -      +
    329D  LYS*     3.4     6.9    -      -       -      +
    330D  GLY      3.2    12.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 327 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145D  ASN      3.9    14.6    -      -       -      +
    149D  PRO*     3.9     5.5    -      -       +      +
    277D  PHE*     4.5     3.4    -      -       +      -
    285D  CYS*     4.1    11.0    -      -       +      -
    286D  THR*     4.2    10.1    -      -       -      +
    287D  TYR*     3.7    57.7    -      -       +      +
    323D  LEU*     3.0    29.8    +      -       +      +
    324D  LYS*     3.6     8.3    -      -       +      +
    326D  SER*     1.3    76.1    -      -       -      +
    328D  LYS*     1.3    63.3    +      -       -      +
    330D  GLY*     3.1     3.8    +      -       -      -
    331D  GLU*     3.0    45.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 328 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    324D  LYS      2.9    17.5    +      -       -      +
    325D  ALA*     3.7     7.4    -      -       -      +
    327D  ILE*     1.3    75.7    -      -       -      +
    329D  LYS*     1.3    54.1    +      -       -      +
    331D  GLU*     3.3    14.5    +      -       -      +
    332D  ASP*     2.7    66.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 329 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    111D  ASP*     2.9    45.2    +      -       -      +
    114D  PHE*     3.6    36.3    -      -       +      +
    115D  ASN*     5.8     1.1    -      -       -      -
    146D  SER*     4.2     2.7    -      -       -      +
    325D  ALA      3.0    14.7    +      -       -      +
    326D  SER*     3.4    12.3    -      -       -      +
    328D  LYS*     1.3    76.6    -      -       -      +
    330D  GLY*     1.3    63.0    +      -       -      +
    332D  ASP*     3.9     6.3    -      -       -      +
    333D  PHE*     3.1    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 330 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114D  PHE*     4.1     4.2    -      -       -      -
    146D  SER      3.7    12.6    -      -       -      -
    149D  PRO*     4.6     0.4    -      -       -      -
    150D  ILE*     3.3    42.4    -      -       -      +
    326D  SER      3.2     4.8    +      -       -      -
    327D  ILE      3.1     7.5    +      -       -      -
    329D  LYS*     1.3    75.1    -      -       -      +
    331D  GLU*     1.3    66.6    +      -       -      +
    333D  PHE*     3.3     8.5    +      -       -      +
    334D  VAL*     3.4     8.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 331 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149D  PRO*     4.4     7.1    -      -       +      +
    153D  GLU*     4.2    32.2    -      -       +      +
    286D  THR*     4.4     9.0    +      -       -      +
    287D  TYR*     4.1    10.5    -      -       +      -
    327D  ILE*     3.0    37.2    +      -       +      +
    328D  LYS*     3.6    19.0    -      -       -      +
    330D  GLY*     1.3    74.6    -      -       -      +
    332D  ASP*     1.3    63.6    +      -       -      +
    333D  PHE      3.3     0.7    +      -       -      -
    334D  VAL*     3.3    13.3    +      -       -      +
    335D  LYS*     3.3    36.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 332 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    328D  LYS*     2.7    59.4    +      -       -      +
    329D  LYS*     3.9     5.9    +      -       -      +
    331D  GLU*     1.3    78.2    -      -       -      +
    333D  PHE*     1.3    60.6    +      -       -      +
    335D  LYS*     3.5    24.0    +      -       -      +
    336D  THR*     3.4    21.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 333 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114D  PHE*     3.8    18.2    -      +       +      -
    115D  ASN*     6.1     1.6    -      -       -      -
    118D  ALA*     3.8    33.9    -      -       +      -
    119D  THR*     3.4    33.7    -      -       +      -
    122D  ALA*     4.0    14.4    -      -       +      -
    150D  ILE*     4.2     9.2    -      -       +      -
    329D  LYS      3.1    12.8    +      -       -      +
    330D  GLY*     3.5     8.7    -      -       -      +
    331D  GLU      3.2     0.4    -      -       -      -
    332D  ASP*     1.3    77.2    -      -       -      +
    334D  VAL*     1.3    68.4    +      -       +      +
    336D  THR*     2.7    29.5    +      -       -      -
    337D  LEU*     3.8    24.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 334 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150D  ILE*     3.6    43.3    -      -       +      +
    153D  GLU*     3.8    23.6    -      -       +      -
    154D  VAL*     4.1     9.6    -      -       +      +
    157D  LYS*     3.5    31.8    +      -       +      -
    330D  GLY      3.7     9.2    -      -       -      +
    331D  GLU      3.3     7.7    +      -       -      +
    333D  PHE*     1.3    80.1    -      -       +      +
    335D  LYS*     1.3    62.4    +      -       +      +
    336D  THR      3.1     0.2    -      -       -      -
    337D  LEU*     3.2    30.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with LYS 335 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153D  GLU*     5.1    14.2    +      -       -      +
    157D  LYS*     5.6     2.2    -      -       -      +
    331D  GLU*     3.3    40.2    +      -       -      +
    332D  ASP*     3.7    19.5    +      -       -      +
    333D  PHE      3.2     0.8    -      -       -      -
    334D  VAL*     1.3    79.3    -      -       +      +
    336D  THR*     1.3    59.3    +      -       +      +
    337D  LEU      3.4     5.1    +      -       -      +
----------------------------------------------------------
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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