Contacts of the helix formed by residues 4165 - 4186 (chain A) 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 GLY4165 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3199A  ILE*     4.2     2.3    -      -       -      +
   4164A  MET*     1.3    76.2    -      -       -      +
   4166A  LEU*     1.3    62.6    +      -       -      +
   4167A  ALA      3.4     2.2    -      -       -      -
   4168A  ALA*     3.6    11.7    +      -       -      +
   4169A  ARG*     3.5    26.8    +      -       -      +
   1012B    T      4.5     5.7    -      -       -      +
   1013B    T      4.5    24.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU4166 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4123A  GLU*     5.3     3.1    -      -       -      +
   4151A  PRO*     3.8    27.0    -      -       +      +
   4153A  ALA*     4.6    20.9    -      -       +      -
   4154A  GLU*     5.8     5.6    -      -       +      +
   4164A  MET      3.6     6.0    -      -       -      +
   4165A  GLY*     1.3    76.2    -      -       -      +
   4167A  ALA*     1.3    63.6    +      -       -      +
   4169A  ARG*     3.8    25.7    +      -       -      +
   4170A  MET*     3.5    18.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA4167 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4149A  LEU      4.7     3.4    -      -       -      +
   4151A  PRO*     3.9    24.6    -      -       +      +
   4154A  GLU*     5.7     0.9    -      -       -      +
   4166A  LEU*     1.3    77.4    -      -       -      +
   4168A  ALA*     1.3    61.2    +      -       -      +
   4170A  MET*     3.2    11.8    +      -       +      +
   4171A  MET*     2.9    34.4    +      -       +      +
   4210A  THR*     6.3     1.3    -      -       +      -
   4211A  GLY*     4.7    12.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with ALA4168 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4165A  GLY*     3.6    13.1    +      -       -      +
   4166A  LEU      3.3     0.2    -      -       -      -
   4167A  ALA*     1.3    79.7    -      -       -      +
   4169A  ARG*     1.3    57.0    +      -       -      +
   4171A  MET*     3.4     3.1    +      -       -      +
   4172A  SER*     2.9    29.6    +      -       -      -
   4211A  GLY*     4.0    13.0    -      -       -      +
   4212A  GLY*     3.8    19.5    -      -       -      +
   4214A  ALA*     5.1     1.2    -      -       -      +
   1012B    T      3.3    24.1    -      -       +      +
   1013B    T      4.0    15.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG4169 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4164A  MET      4.3     5.7    +      -       -      -
   4165A  GLY      3.5    24.3    +      -       -      +
   4166A  LEU*     3.9    31.5    -      -       -      +
   4167A  ALA      3.3     0.2    -      -       -      -
   4168A  ALA*     1.3    79.2    -      -       -      +
   4170A  MET*     1.3    57.9    +      -       -      +
   4172A  SER*     3.5     2.3    +      -       -      -
   4173A  GLN*     3.0    27.0    +      -       -      +
   4176A  ARG*     4.5     1.2    +      -       -      +
   1011B    T      3.8    43.0    +      -       -      +
   1012B    T      3.7    42.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET4170 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3159A  ILE*     4.4    11.4    -      -       +      +
   3160A  GLY*     5.6     1.3    -      -       -      +
   4122A  GLY*     4.1     2.2    -      -       -      -
   4123A  GLU*     3.6    44.2    -      -       +      +
   4126A  LEU*     3.9    12.6    -      -       +      -
   4149A  LEU*     3.6    26.9    -      -       +      +
   4151A  PRO*     4.3     9.0    -      -       +      -
   4166A  LEU*     3.5    12.3    +      -       +      +
   4167A  ALA*     3.2    19.4    +      -       +      +
   4169A  ARG*     1.3    77.3    -      -       -      +
   4171A  MET*     1.3    87.3    +      -       +      +
   4173A  GLN*     3.3    12.0    +      -       -      +
   4174A  ALA*     2.9    27.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with MET4171 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4126A  LEU*     3.5    33.9    -      -       +      -
   4146A  VAL*     4.5    18.6    -      -       +      -
   4149A  LEU*     3.4    30.5    -      -       +      -
   4167A  ALA*     2.9    17.2    +      -       +      +
   4168A  ALA      3.5     2.2    -      -       -      +
   4170A  MET*     1.3    82.1    -      -       +      +
   4172A  SER*     1.3    65.5    +      -       -      +
   4174A  ALA*     3.2     3.8    +      -       +      +
   4175A  MET*     3.0    43.2    +      -       +      +
   4191A  PHE*     4.8     4.5    -      -       +      -
   4211A  GLY*     3.4    34.5    -      -       -      +
   4214A  ALA*     4.2     7.0    -      -       +      -
   4215A  LEU*     5.6     9.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER4172 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3196A  ARG*     3.2    29.4    +      -       -      -
   3210A  THR*     5.9     0.5    -      -       -      +
   4168A  ALA      2.9    17.7    +      -       -      -
   4169A  ARG      3.6     2.0    -      -       -      -
   4170A  MET      3.3     0.2    -      -       -      -
   4171A  MET*     1.3    77.0    -      -       -      +
   4173A  GLN*     1.3    60.9    +      -       -      +
   4175A  MET*     3.6     3.5    +      -       -      +
   4176A  ARG*     3.4    27.1    +      -       -      +
   4214A  ALA*     3.5    14.3    -      -       -      +
   4218A  TYR*     5.1     1.2    +      -       -      -
   1012B    T      3.0    33.4    +      -       -      -
   1013B    T      5.8     0.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN4173 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3154A  GLU*     3.0    36.7    -      -       +      +
   3158A  GLU      4.1     4.8    -      -       -      +
   3159A  ILE*     3.9    11.0    -      -       -      +
   3160A  GLY*     2.9    35.0    -      -       -      +
   3161A  ASP      3.0    21.9    +      -       -      +
   3163A  HIS*     3.9     2.1    -      -       -      -
   4169A  ARG      3.0    12.6    +      -       -      +
   4170A  MET*     3.6    11.7    +      -       -      +
   4172A  SER*     1.3    74.6    -      -       -      +
   4174A  ALA*     1.3    65.1    +      -       -      +
   4176A  ARG*     3.2    21.9    +      -       -      +
   4177A  LYS*     3.2    26.1    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA4174 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3159A  ILE*     4.2    17.9    -      -       +      +
   4126A  LEU*     3.8    30.1    -      -       +      -
   4170A  MET      2.9    13.6    +      -       -      +
   4171A  MET*     3.2     9.6    +      -       -      +
   4173A  GLN*     1.3    75.6    -      -       -      +
   4175A  MET*     1.3    65.7    +      -       +      +
   4177A  LYS*     3.2     3.3    +      -       -      +
   4178A  LEU*     2.7    42.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with MET4175 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4061A  ILE*     4.1    17.5    -      -       -      -
   4171A  MET*     3.0    31.8    +      -       -      +
   4172A  SER      3.9     2.9    -      -       -      +
   4173A  GLN      3.3     0.4    -      -       -      -
   4174A  ALA*     1.3    86.9    -      -       +      +
   4176A  ARG*     1.3    63.1    +      -       -      +
   4178A  LEU*     4.4     6.5    -      -       +      +
   4179A  ALA*     2.9    30.3    +      -       -      +
   4191A  PHE*     3.8    28.3    -      -       +      -
   4214A  ALA*     3.8    13.9    -      -       +      -
   4215A  LEU*     3.9    24.5    -      -       +      +
   4218A  TYR*     3.4    41.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG4176 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3147A  ALA      3.2    28.7    -      -       -      +
   3148A  ALA*     4.3     4.4    -      -       -      +
   3149A  LEU      5.2     1.6    -      -       -      -
   3150A  THR*     3.1    36.8    +      -       +      +
   3151A  PRO*     4.9     0.6    -      -       -      +
   3154A  GLU*     2.8    33.2    +      -       -      +
   3155A  ILE*     5.5     1.2    -      -       -      +
   3167A  ALA*     4.9    14.3    -      -       -      +
   3210A  THR*     6.1     4.5    -      -       -      +
   4169A  ARG*     4.5     1.8    +      -       -      +
   4172A  SER*     3.4    12.3    +      -       -      +
   4173A  GLN*     3.2    35.3    +      -       -      +
   4174A  ALA      3.3     0.2    -      -       -      -
   4175A  MET*     1.3    79.9    -      -       -      +
   4177A  LYS*     1.3    60.4    +      -       -      +
   4179A  ALA*     4.2     7.1    +      -       -      +
   4180A  GLY*     4.5     3.5    +      -       -      -
   4218A  TYR*     3.6    11.9    -      -       -      +
   1011B    T      5.0     8.7    +      -       -      -
   1012B    T      3.7    20.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with LYS4177 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3150A  THR*     4.4    14.6    -      -       +      -
   3154A  GLU*     3.3    31.4    -      -       +      +
   3155A  ILE*     3.3    25.4    +      -       +      +
   3157A  GLY      2.7    23.4    +      -       -      -
   3158A  GLU      4.0     4.8    -      -       -      +
   3159A  ILE*     3.9    18.6    -      -       +      +
   4127A  GLU*     3.5    16.6    +      -       -      -
   4130A  ASP*     3.4    27.5    +      -       -      +
   4134A  ARG*     5.1     0.8    -      -       -      +
   4173A  GLN*     3.2    13.7    +      -       +      +
   4174A  ALA      3.2     7.0    +      -       -      +
   4176A  ARG*     1.3    79.5    -      -       -      +
   4178A  LEU*     1.3    63.5    +      -       -      +
   4180A  GLY*     4.2     1.0    +      -       -      -
   4181A  ASN*     3.7    23.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU4178 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3159A  ILE*     5.0     3.4    -      -       +      -
   4061A  ILE*     4.9     2.5    -      -       +      -
   4126A  LEU*     4.5     9.2    -      -       +      +
   4129A  CYS*     4.1    11.2    -      -       +      +
   4130A  ASP*     3.6    43.7    -      -       +      +
   4133A  ALA*     4.8     4.3    -      -       +      -
   4174A  ALA*     2.7    38.7    +      -       +      +
   4175A  MET*     4.1     6.5    -      -       +      +
   4177A  LYS*     1.3    72.6    -      -       -      +
   4179A  ALA*     1.3    67.3    +      -       -      +
   4181A  ASN*     2.9     4.0    +      -       -      -
   4182A  LEU*     2.9    38.9    +      -       +      +
   4189A  LEU*     3.8    24.2    -      -       +      -
   4191A  PHE*     4.4    11.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA4179 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3095A  ALA      5.0     2.0    -      -       -      +
   3096A  GLU      4.2    15.0    -      -       -      +
   3097A  HIS*     4.0    10.1    -      -       +      +
   3148A  ALA*     5.9     0.7    -      -       +      -
   4059A  GLY      4.6     1.9    -      -       -      +
   4061A  ILE*     4.4    13.1    -      -       +      +
   4175A  MET      2.9    18.6    +      -       -      +
   4176A  ARG      4.5     3.4    -      -       -      +
   4177A  LYS      3.6     0.4    -      -       -      -
   4178A  LEU*     1.3    76.2    -      -       -      +
   4180A  GLY*     1.3    61.2    +      -       -      +
   4182A  LEU*     3.5     4.5    +      -       -      +
   4183A  LYS*     3.2    22.2    +      -       -      +
   4218A  TYR*     4.0    23.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY4180 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3097A  HIS*     3.6    27.5    -      -       -      -
   3120A  ASP*     6.1     1.8    -      -       -      -
   4176A  ARG      4.5     4.2    +      -       -      -
   4177A  LYS      4.2     3.5    +      -       -      -
   4178A  LEU      3.2     0.4    -      -       -      -
   4179A  ALA*     1.3    75.9    -      -       -      +
   4181A  ASN*     1.3    66.3    +      -       -      +
   4183A  LYS*     3.4     3.5    +      -       -      +
   4184A  GLN*     3.1    30.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN4181 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3155A  ILE*     6.0     4.1    -      -       -      +
   4130A  ASP*     2.9    26.1    -      -       -      +
   4133A  ALA*     4.0    18.6    -      -       +      +
   4134A  ARG*     3.3    31.8    +      -       +      +
   4177A  LYS*     3.7     8.8    +      -       -      +
   4178A  LEU      2.9     7.6    +      -       -      +
   4180A  GLY*     1.3    77.5    -      -       -      +
   4182A  LEU*     1.3    60.4    -      -       -      +
   4184A  GLN*     3.7     6.9    +      -       -      +
   4185A  SER*     3.0    30.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU4182 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4059A  GLY*     3.3    11.3    -      -       -      +
   4060A  ARG      4.9     0.9    -      -       -      +
   4061A  ILE*     3.7    23.6    -      -       +      -
   4133A  ALA*     4.0    15.9    -      -       +      -
   4141A  ILE*     4.8     3.4    -      -       +      -
   4178A  LEU*     2.9    30.1    +      -       +      +
   4179A  ALA      3.8     3.6    -      -       -      +
   4181A  ASN*     1.3    74.8    -      -       -      +
   4183A  LYS*     1.3    60.3    +      -       -      +
   4185A  SER      3.5     0.3    +      -       -      -
   4186A  ASN      3.0     7.4    +      -       -      -
   4187A  THR*     2.9    66.5    +      -       +      +
   4189A  LEU*     3.7    39.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS4183 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3097A  HIS*     3.5    33.2    +      -       +      +
   3098A  ALA*     4.7     0.6    -      -       -      +
   3099A  LEU      4.8     5.3    +      -       -      -
   3118A  GLN*     3.6    29.2    -      -       -      +
   4034A  SER*     3.8    26.1    +      -       -      +
   4035A  MET*     5.0     7.1    +      -       -      +
   4058A  MET      4.6     4.9    -      -       -      -
   4059A  GLY*     3.5    19.0    +      -       -      +
   4060A  ARG*     3.5    32.9    -      -       -      +
   4179A  ALA      3.2    15.2    +      -       -      +
   4180A  GLY      3.4     0.6    +      -       -      +
   4182A  LEU*     1.3    78.6    -      -       -      +
   4184A  GLN*     1.3    63.2    +      -       +      +
   4186A  ASN*     3.1    18.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN4184 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   3097A  HIS*     3.7    27.7    -      -       -      -
   3118A  GLN*     3.9    11.9    +      -       -      +
   3119A  PRO      5.0     0.2    +      -       -      -
   3120A  ASP*     3.1    27.6    +      -       -      +
   4180A  GLY*     3.1    17.8    +      -       -      +
   4181A  ASN*     3.7     7.7    +      -       -      +
   4183A  LYS*     1.3    78.4    -      -       +      +
   4185A  SER*     1.3    58.5    +      -       -      +
   4186A  ASN*     3.4     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with SER4185 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4133A  ALA      2.5    29.2    +      -       -      -
   4134A  ARG*     4.2     5.4    +      -       -      -
   4136A  GLY*     3.9    21.5    +      -       -      +
   4138A  VAL      4.9     2.1    -      -       -      +
   4139A  ASP*     5.6     1.2    -      -       -      +
   4181A  ASN      3.0    15.3    +      -       -      -
   4182A  LEU      4.1     0.2    -      -       -      -
   4183A  LYS      3.1     0.4    -      -       -      -
   4184A  GLN*     1.3    77.8    -      -       -      +
   4186A  ASN*     1.3    70.6    +      -       -      +
   4187A  THR*     3.1    16.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASN4186 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   4034A  SER      5.6     1.6    -      -       -      +
   4036A  ASP      5.5     3.1    -      -       -      +
   4038A  GLU*     3.2    28.8    +      -       -      +
   4058A  MET*     3.3    49.9    -      -       -      +
   4059A  GLY*     3.6     7.4    +      -       -      -
   4139A  ASP*     4.1     3.5    -      -       -      +
   4182A  LEU      3.0     6.8    +      -       -      -
   4183A  LYS*     3.1    14.5    +      -       -      +
   4184A  GLN      3.4     0.4    -      -       -      -
   4185A  SER*     1.3    81.0    -      -       -      +
   4187A  THR*     1.3    58.6    +      -       -      +
----------------------------------------------------------
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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