Contacts of the helix formed by residues 3165 - 3186 (chain D) in PDB entry 3CMT


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 GLY3165 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2199D  ILE*     4.3     6.6    -      -       -      +
   3163D  HIS      3.2     2.0    +      -       -      -
   3164D  MET*     1.3    70.4    -      -       -      +
   3166D  LEU*     1.3    57.4    +      -       -      +
   3167D  ALA      3.5     1.6    -      -       -      -
   3168D  ALA*     3.4    15.2    +      -       -      +
   3169D  ARG*     2.9    38.4    +      -       -      +
   1009E    C      4.2    14.6    +      -       -      -
   1010E    T      4.6    15.0    +      -       -      -
   1011E    T      5.2     5.6    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU3166 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3123D  GLU*     4.7     8.3    -      -       -      +
   3151D  PRO*     3.9    26.9    -      -       +      -
   3153D  ALA*     3.9    24.9    -      -       +      -
   3154D  GLU      4.8     0.2    -      -       -      +
   3163D  HIS*     3.1    36.7    +      -       +      +
   3164D  MET      3.0     3.6    +      -       -      -
   3165D  GLY*     1.3    73.5    -      -       -      +
   3167D  ALA*     1.3    61.4    +      -       -      +
   3169D  ARG*     3.2    24.9    +      -       +      +
   3170D  MET*     2.9    29.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA3167 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3149D  LEU      4.8     3.4    -      -       -      +
   3151D  PRO*     3.9    26.1    -      -       +      +
   3163D  HIS      4.9     0.2    +      -       -      -
   3166D  LEU*     1.3    78.2    -      -       -      +
   3168D  ALA*     1.3    58.2    +      -       -      +
   3170D  MET*     3.4    11.0    +      -       +      +
   3171D  MET*     2.9    35.3    +      -       +      +
   3210D  THR*     6.4     1.1    -      -       +      -
   3211D  GLY*     4.7     6.7    -      -       -      -
   4176D  ARG*     4.8    12.8    -      -       -      +
   1011E    T      4.0    13.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA3168 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3165D  GLY      3.4     9.1    +      -       -      +
   3166D  LEU      3.2     0.4    -      -       -      -
   3167D  ALA*     1.3    79.6    -      -       -      +
   3169D  ARG*     1.3    56.6    +      -       -      +
   3171D  MET*     3.4     3.6    +      -       -      +
   3172D  SER*     2.9    29.9    +      -       -      -
   3211D  GLY      4.0    12.2    -      -       -      +
   3212D  GLY*     3.8     9.1    -      -       -      -
   3214D  ALA*     5.1     1.2    +      -       -      +
   1009E    C      3.4    25.3    -      -       -      +
   1010E    T      3.7    27.2    +      -       -      +
   1011E    T      3.7     4.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ARG3169 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3164D  MET      3.5     7.3    +      -       -      -
   3165D  GLY      2.9    30.1    +      -       -      +
   3166D  LEU*     3.6    31.3    -      -       +      +
   3168D  ALA*     1.3    75.1    -      -       -      +
   3170D  MET*     1.3    58.6    +      -       -      +
   3172D  SER*     3.5     2.3    +      -       -      -
   3173D  GLN*     3.0    27.8    +      -       -      +
   3176D  ARG*     4.5     1.0    +      -       -      +
   1008E    C      3.4    41.3    +      -       -      +
   1009E    C      2.7    45.6    +      -       -      +
   2007F    G      3.4     7.9    -      -       -      +
   2008F    G      3.6    23.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET3170 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2159D  ILE*     4.2    12.3    -      -       +      +
   2160D  GLY*     5.5     1.6    -      -       -      +
   3122D  GLY*     4.1     2.0    -      -       -      -
   3123D  GLU*     3.6    43.5    -      -       +      +
   3126D  LEU*     3.9    13.2    -      -       +      -
   3149D  LEU*     3.6    26.5    -      -       +      +
   3151D  PRO*     4.3     9.9    -      -       -      -
   3166D  LEU*     2.9    21.1    +      -       +      +
   3167D  ALA*     3.6    15.7    -      -       +      +
   3169D  ARG*     1.3    74.4    -      -       -      +
   3171D  MET*     1.3    87.0    +      -       +      +
   3173D  GLN*     3.3    12.3    +      -       -      +
   3174D  ALA*     2.9    27.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET3171 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3126D  LEU*     3.5    33.4    -      -       +      -
   3146D  VAL*     4.5    17.0    -      -       +      -
   3149D  LEU*     3.4    30.7    -      -       +      -
   3167D  ALA*     2.9    20.5    +      -       +      +
   3168D  ALA      3.4     2.7    +      -       -      +
   3170D  MET*     1.3    82.1    -      -       +      +
   3172D  SER*     1.3    65.1    +      -       -      +
   3174D  ALA*     3.2     3.6    +      -       +      +
   3175D  MET*     3.0    44.7    +      -       +      +
   3191D  PHE*     4.9     4.9    -      -       +      -
   3211D  GLY*     3.5    31.4    -      -       -      +
   3214D  ALA*     4.2     6.5    -      -       +      -
   3215D  LEU*     5.6     9.2    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER3172 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2196D  ARG*     3.4    29.7    +      -       -      -
   2210D  THR*     6.0     0.5    -      -       -      +
   3168D  ALA      2.9    17.9    +      -       -      -
   3169D  ARG      3.5     2.5    -      -       -      -
   3171D  MET*     1.3    76.8    -      -       -      +
   3173D  GLN*     1.3    62.0    +      -       -      +
   3175D  MET*     3.6     3.5    +      -       -      +
   3176D  ARG*     3.4    27.1    +      -       -      +
   3214D  ALA*     3.5    14.9    -      -       -      +
   3218D  TYR*     5.0     1.6    +      -       -      -
   1009E    C      3.4    30.0    +      -       -      -
   1010E    T      6.0     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN3173 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2154D  GLU*     3.1    36.6    -      -       +      +
   2158D  GLU      3.8     7.1    -      -       -      +
   2159D  ILE*     3.7    11.6    -      -       +      +
   2160D  GLY*     2.8    35.5    -      -       -      +
   2161D  ASP      3.0    21.3    +      -       -      +
   2163D  HIS*     3.9     1.4    -      -       -      -
   3169D  ARG      3.0    12.6    +      -       -      +
   3170D  MET*     3.5    10.9    +      -       -      +
   3172D  SER*     1.3    73.9    -      -       -      +
   3174D  ALA*     1.3    64.7    +      -       -      +
   3176D  ARG*     3.2    22.0    +      -       -      +
   3177D  LYS*     3.2    27.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA3174 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2159D  ILE*     4.1    19.2    -      -       +      +
   3126D  LEU*     3.8    29.6    -      -       +      -
   3170D  MET      2.9    13.8    +      -       -      +
   3171D  MET*     3.4     9.9    -      -       -      +
   3173D  GLN*     1.3    76.5    -      -       -      +
   3175D  MET*     1.3    65.0    +      -       +      +
   3177D  LYS*     3.2     3.3    +      -       -      +
   3178D  LEU*     2.7    41.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET3175 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3061D  ILE*     4.1    17.9    -      -       -      -
   3171D  MET*     3.0    36.6    +      -       -      +
   3172D  SER      3.9     3.4    -      -       -      +
   3173D  GLN      3.3     0.2    -      -       -      -
   3174D  ALA*     1.3    85.8    -      -       +      +
   3176D  ARG*     1.3    63.9    +      -       -      +
   3178D  LEU*     4.4     6.1    -      -       +      +
   3179D  ALA*     2.9    29.6    +      -       -      +
   3191D  PHE*     3.8    28.0    -      -       +      -
   3214D  ALA*     3.8    14.1    -      -       +      -
   3215D  LEU*     3.9    24.5    -      -       +      +
   3218D  TYR*     3.3    39.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG3176 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2147D  ALA      3.3    26.9    -      -       -      +
   2148D  ALA*     4.3     4.4    -      -       -      +
   2149D  LEU      5.2     2.0    -      -       -      -
   2150D  THR*     3.1    36.8    +      -       +      +
   2151D  PRO*     4.8     3.8    -      -       -      +
   2154D  GLU*     2.6    40.6    +      -       -      -
   2155D  ILE*     5.4     1.6    -      -       -      +
   2167D  ALA*     5.0    10.3    -      -       -      +
   2210D  THR*     6.3     3.0    -      -       -      +
   3169D  ARG*     4.5     1.6    +      -       -      +
   3172D  SER*     3.4    13.0    +      -       -      +
   3173D  GLN*     3.2    31.5    +      -       -      +
   3175D  MET*     1.3    80.0    -      -       -      +
   3177D  LYS*     1.3    60.3    +      -       +      +
   3179D  ALA*     4.2     7.1    +      -       -      +
   3180D  GLY      4.5     3.5    +      -       -      -
   3218D  TYR*     3.6    12.7    +      -       -      +
   1008E    C      6.0     3.8    -      -       -      -
   1009E    C      3.5    22.4    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS3177 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2150D  THR*     4.6     8.1    -      -       +      -
   2154D  GLU*     3.5    19.3    -      -       +      +
   2155D  ILE*     3.2    38.7    +      -       -      +
   2157D  GLY      2.8    21.8    +      -       -      +
   2158D  GLU*     4.1     1.3    -      -       -      +
   2159D  ILE*     3.9    20.6    -      -       +      +
   3127D  GLU*     3.5    15.8    +      -       -      -
   3130D  ASP*     3.4    28.8    +      -       -      +
   3134D  ARG*     5.1     1.0    -      -       -      +
   3173D  GLN*     3.2    16.8    +      -       +      +
   3174D  ALA*     3.2     7.7    +      -       -      +
   3176D  ARG*     1.3    77.1    -      -       -      +
   3178D  LEU*     1.3    63.9    +      -       -      +
   3180D  GLY*     4.2     1.2    +      -       -      -
   3181D  ASN*     3.7    23.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU3178 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2159D  ILE*     5.2     2.0    -      -       +      -
   3061D  ILE*     4.9     2.7    -      -       +      -
   3126D  LEU*     4.5     9.0    -      -       +      +
   3129D  CYS*     4.1    11.7    -      -       +      +
   3130D  ASP*     3.6    42.8    -      -       +      +
   3133D  ALA*     4.8     4.9    -      -       +      -
   3174D  ALA*     2.7    37.7    +      -       +      +
   3175D  MET*     4.1     6.5    -      -       +      +
   3177D  LYS*     1.3    70.8    -      -       +      +
   3179D  ALA*     1.3    67.3    +      -       -      +
   3180D  GLY      3.2     2.5    -      -       -      -
   3181D  ASN*     3.0     3.9    +      -       -      -
   3182D  LEU*     2.8    37.6    +      -       +      +
   3189D  LEU*     3.8    24.7    -      -       +      -
   3191D  PHE*     4.4    11.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA3179 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2095D  ALA      5.1     2.2    -      -       -      +
   2096D  GLU      4.2    15.0    -      -       -      +
   2097D  HIS*     4.0    10.5    -      -       +      +
   2148D  ALA*     6.1     0.4    -      -       +      -
   3059D  GLY      4.6     2.1    -      -       -      +
   3061D  ILE*     4.4    13.8    -      -       +      +
   3175D  MET      2.9    17.9    +      -       -      +
   3176D  ARG      4.5     3.4    -      -       -      +
   3177D  LYS      3.6     0.2    -      -       -      -
   3178D  LEU*     1.3    76.0    -      -       -      +
   3180D  GLY*     1.3    62.1    +      -       -      +
   3182D  LEU*     3.5     4.3    +      -       -      +
   3183D  LYS*     3.2    22.2    +      -       -      +
   3218D  TYR*     4.0    22.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY3180 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2097D  HIS*     3.7    29.0    -      -       -      -
   3176D  ARG      4.5     4.2    +      -       -      -
   3177D  LYS      4.2     3.5    +      -       -      -
   3178D  LEU      3.2     0.8    -      -       -      -
   3179D  ALA*     1.3    75.9    -      -       -      +
   3181D  ASN*     1.3    66.3    +      -       -      +
   3183D  LYS*     3.4     3.1    +      -       -      +
   3184D  GLN*     3.1    32.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN3181 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2155D  ILE*     6.2     2.6    -      -       -      +
   3130D  ASP*     2.8    27.1    -      -       -      +
   3133D  ALA*     4.0    18.8    -      -       +      +
   3134D  ARG*     3.2    31.4    -      -       +      +
   3177D  LYS*     3.7     9.2    +      -       -      +
   3178D  LEU      3.0     7.4    +      -       -      +
   3180D  GLY*     1.3    76.4    -      -       -      +
   3182D  LEU*     1.3    60.0    +      -       -      +
   3184D  GLN*     3.7     6.7    +      -       -      +
   3185D  SER*     2.9    30.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU3182 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3059D  GLY*     3.3    10.4    -      -       -      +
   3060D  ARG      4.9     0.9    -      -       -      +
   3061D  ILE*     3.7    23.6    -      -       +      -
   3133D  ALA*     4.0    15.5    -      -       +      -
   3141D  ILE*     4.8     3.1    -      -       +      -
   3178D  LEU*     2.8    29.9    +      -       +      +
   3179D  ALA      3.8     3.6    -      -       -      +
   3181D  ASN*     1.3    75.2    -      -       -      +
   3183D  LYS*     1.3    60.3    +      -       -      +
   3185D  SER      3.4     0.3    +      -       -      -
   3186D  ASN      3.0     7.6    +      -       -      -
   3187D  THR*     2.9    68.3    +      -       +      +
   3189D  LEU*     3.7    39.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS3183 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2097D  HIS*     3.7    27.4    +      -       +      +
   2098D  ALA      4.8     0.2    -      -       -      +
   2099D  LEU      4.9     5.1    +      -       -      -
   2118D  GLN*     3.7    29.7    -      -       -      +
   3034D  SER*     3.6    29.8    +      -       -      +
   3035D  MET*     4.9     8.3    +      -       -      +
   3036D  ASP      6.2     0.2    -      -       -      -
   3058D  MET      4.6     5.4    -      -       -      -
   3059D  GLY*     3.6    19.4    +      -       -      +
   3060D  ARG*     3.6    33.4    -      -       -      +
   3179D  ALA      3.2    14.9    +      -       -      +
   3180D  GLY      3.4     4.2    +      -       -      +
   3182D  LEU*     1.3    80.2    -      -       -      +
   3184D  GLN*     1.3    65.3    +      -       +      +
   3186D  ASN*     3.1    18.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN3184 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   2097D  HIS*     3.9    25.7    +      -       -      -
   2118D  GLN*     4.1    10.3    +      -       -      +
   2120D  ASP*     3.4    25.8    +      -       -      +
   3034D  SER*     6.4     2.5    -      -       -      -
   3180D  GLY*     3.1    17.9    +      -       -      +
   3181D  ASN*     4.4     6.9    +      -       -      +
   3183D  LYS*     1.3    77.5    -      -       +      +
   3185D  SER*     1.3    59.1    +      -       -      +
   3186D  ASN*     5.3     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with SER3185 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3133D  ALA      2.5    30.0    +      -       -      -
   3134D  ARG*     4.2     5.4    +      -       -      -
   3136D  GLY*     4.0    21.6    +      -       -      +
   3138D  VAL      4.9     2.3    -      -       -      +
   3139D  ASP*     5.6     1.6    -      -       -      +
   3181D  ASN      2.9    15.9    +      -       -      -
   3182D  LEU      4.1     0.2    -      -       -      -
   3183D  LYS      3.1     0.2    -      -       -      -
   3184D  GLN*     1.3    77.7    -      -       -      +
   3186D  ASN*     1.3    69.4    +      -       -      +
   3187D  THR*     3.1    16.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN3186 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3034D  SER      5.6     1.6    -      -       -      +
   3036D  ASP      5.4     3.6    -      -       -      +
   3038D  GLU*     3.2    28.2    +      -       -      +
   3058D  MET*     3.4    50.9    -      -       -      +
   3059D  GLY*     3.6     7.3    +      -       -      -
   3138D  VAL      5.4     0.2    -      -       -      -
   3139D  ASP*     4.1     3.6    -      -       -      +
   3182D  LEU      3.0     7.4    +      -       -      -
   3183D  LYS*     3.1    14.9    +      -       -      +
   3184D  GLN      3.4     0.8    -      -       -      +
   3185D  SER*     1.3    80.9    -      -       -      +
   3187D  THR*     1.3    57.9    +      -       -      +
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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