Contacts of the helix formed by residues 259 - 283 (chain B) in PDB entry 1ZDT


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 PRO 259 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257B  ASP      4.3     3.1    -      -       -      +
    258B  GLN*     1.3   101.2    -      -       +      +
    260B  ALA*     1.3    67.9    +      -       -      +
    261B  ALA*     4.5     3.4    -      -       +      +
    262B  PHE*     3.1    31.2    +      -       +      +
    263B  GLY      3.6     4.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 260 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  GLN      3.3     5.8    +      -       -      +
    259B  PRO*     1.3    70.9    -      -       -      +
    261B  ALA*     1.3    62.4    +      -       -      +
    263B  GLY*     3.3     4.3    +      -       -      -
    264B  LEU*     3.1    21.3    +      -       -      +
    267B  ARG*     5.3     2.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 261 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259B  PRO*     3.2     3.5    -      -       +      -
    260B  ALA*     1.3    77.9    -      -       -      +
    262B  PHE*     1.3    63.5    +      -       -      +
    264B  LEU*     3.5    12.2    -      -       +      +
    265B  LEU*     3.1    37.7    +      -       +      +
   1002B  PEF      5.2     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 262 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    258B  GLN*     4.7     6.5    -      -       +      -
    259B  PRO*     3.1    28.8    +      -       +      +
    261B  ALA*     1.3    78.7    -      -       -      +
    263B  GLY*     1.3    66.3    +      -       -      +
    265B  LEU*     3.4     1.9    +      -       -      +
    266B  CYS*     3.0    51.5    +      -       -      -
    436B  TYR*     3.6    22.9    -      +       -      -
    440B  LYS*     3.7    22.7    -      -       +      -
    445B  GLU*     3.1    33.4    -      -       +      -
    446B  MET*     3.6    17.7    -      -       -      -
    447B  PRO*     4.7     0.9    -      -       +      -
   1002B  PEF      3.4    38.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 263 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    259B  PRO      3.6     4.6    +      -       -      -
    260B  ALA*     3.3     6.5    +      -       -      -
    262B  PHE*     1.3    81.0    -      -       -      +
    264B  LEU*     1.3    52.7    +      -       -      +
    266B  CYS*     3.3     9.2    +      -       -      +
    267B  ARG*     2.8    45.3    +      -       -      +
    447B  PRO*     4.2    14.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 264 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    248B  LEU*     3.6    43.6    -      -       +      +
    260B  ALA      3.1    14.3    +      -       -      +
    261B  ALA*     3.5    15.5    -      -       +      +
    263B  GLY*     1.3    75.9    -      -       -      +
    265B  LEU*     1.3    69.0    +      -       +      +
    267B  ARG*     3.2    21.0    +      -       -      +
    268B  MET*     3.0    26.6    +      -       +      +
    329B  GLN*     4.2    23.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 265 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261B  ALA*     3.1    26.3    +      -       +      +
    262B  PHE      3.9     1.1    -      -       -      +
    264B  LEU*     1.3    83.8    -      -       +      +
    266B  CYS*     1.3    65.3    +      -       -      +
    268B  MET*     3.4    22.1    +      -       +      +
    269B  ALA*     3.1    23.7    +      -       -      +
    325B  LEU*     3.6    30.7    -      -       +      -
    329B  GLN*     4.6     3.1    -      -       -      +
   1002B  PEF      3.8    66.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 266 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    262B  PHE*     3.0    53.6    +      -       -      +
    263B  GLY      3.3     9.2    -      -       -      +
    265B  LEU*     1.3    76.7    -      -       -      +
    267B  ARG*     1.3    62.1    +      -       -      +
    269B  ALA*     3.4     3.4    +      -       -      +
    270B  ASP*     3.1    26.5    +      -       -      +
    446B  MET*     3.7    19.1    -      -       -      -
    447B  PRO*     3.8    12.3    -      -       +      -
    450B  ASN*     3.7    15.4    +      -       -      +
    452B  LEU*     5.5     0.7    -      -       -      +
   1002B  PEF      4.1    15.7    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 267 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247B  SER      4.5     4.3    +      -       -      -
    248B  LEU*     3.3    35.7    +      -       +      +
    250B  GLU*     3.6    20.0    +      -       -      +
    252B  THR*     2.9    36.1    +      -       -      +
    260B  ALA      5.3     2.2    +      -       -      -
    263B  GLY      2.8    21.2    +      -       -      +
    264B  LEU*     3.2    26.8    +      -       -      +
    266B  CYS*     1.3    74.0    -      -       +      +
    268B  MET*     1.3    58.2    +      -       -      +
    270B  ASP*     3.2    12.1    +      -       +      +
    271B  GLN*     2.9    34.2    +      -       +      +
    447B  PRO*     5.7     5.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 268 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244B  ILE*     4.2     9.4    -      -       +      +
    248B  LEU*     3.8    15.0    -      -       +      +
    264B  LEU*     3.0    16.9    +      -       +      +
    265B  LEU*     3.5    35.4    -      -       +      +
    267B  ARG*     1.3    78.0    -      -       -      +
    269B  ALA*     1.3    53.4    +      -       -      +
    271B  GLN*     3.5     3.1    +      -       -      +
    272B  THR*     2.6    34.8    +      -       -      +
    325B  LEU*     3.9    26.0    -      -       +      -
    326B  VAL*     3.6    21.3    -      -       +      +
    327B  THR*     3.8    24.2    -      -       +      -
    329B  GLN*     4.5     0.7    -      -       -      +
   1002B  PEF      4.3    31.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 269 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    265B  LEU      3.1    16.2    +      -       -      +
    266B  CYS      3.9     3.8    -      -       -      +
    267B  ARG      3.3     0.2    -      -       -      -
    268B  MET*     1.3    76.9    -      -       -      +
    270B  ASP*     1.3    66.3    +      -       -      +
    272B  THR*     3.3     9.2    +      -       -      -
    273B  PHE*     3.1    23.4    +      -       -      +
    306B  LEU*     3.8     5.9    -      -       +      +
    452B  LEU*     4.2    20.6    -      -       +      +
   1002B  PEF      4.3    35.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 270 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    266B  CYS      3.1    16.6    +      -       -      +
    267B  ARG*     3.2    15.3    +      -       -      +
    269B  ALA*     1.3    76.8    -      -       -      +
    271B  GLN*     1.3    61.4    +      -       -      +
    273B  PHE*     3.2     6.7    +      -       -      +
    274B  ILE*     2.9    31.7    +      -       -      +
    449B  ASN      4.0     2.6    -      -       -      +
    450B  ASN*     3.6    14.5    +      -       -      -
    451B  LEU*     3.1    42.2    +      -       +      +
    452B  LEU*     3.4    29.2    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 271 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243B  ARG*     5.9     4.6    -      -       -      +
    244B  ILE*     3.8    29.9    -      -       +      +
    247B  SER*     3.5    35.4    +      -       -      +
    248B  LEU*     5.3     2.5    -      -       +      -
    267B  ARG*     2.9    22.3    +      -       +      +
    268B  MET      3.8     2.9    -      -       -      +
    269B  ALA      3.3     0.2    -      -       -      -
    270B  ASP*     1.3    76.2    -      -       -      +
    272B  THR*     1.3    64.9    +      -       -      +
    274B  ILE*     3.5    33.1    +      -       -      +
    275B  SER*     3.2    21.1    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 272 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    240B  VAL*     5.7     2.7    -      -       +      -
    244B  ILE*     3.8     8.7    -      -       +      +
    268B  MET*     2.6    23.7    +      -       -      +
    269B  ALA*     3.5    11.3    -      -       -      -
    270B  ASP      3.2     0.2    -      -       -      -
    271B  GLN*     1.3    76.6    -      -       -      +
    273B  PHE*     1.3    58.8    +      -       -      +
    275B  SER*     3.2     7.2    +      -       -      -
    276B  ILE*     3.0    29.3    +      -       +      +
    306B  LEU*     4.0    14.6    -      -       +      -
    309B  ASP*     3.4    31.9    -      -       -      +
    313B  ARG*     4.8     5.8    -      -       -      +
    326B  VAL*     3.7    17.8    -      -       +      +
   1002B  PEF      6.0     2.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 273 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    269B  ALA      3.1    13.3    +      -       -      +
    270B  ASP      3.2     7.6    +      -       -      +
    272B  THR*     1.3    76.5    -      -       -      +
    274B  ILE*     1.3    64.7    +      -       -      +
    276B  ILE*     3.1    19.1    +      -       +      +
    277B  VAL*     2.9    44.3    +      -       +      +
    298B  LEU*     4.9    10.5    -      -       +      -
    302B  TRP*     3.4    37.9    -      -       +      -
    305B  LEU*     5.6     0.2    -      -       +      -
    306B  LEU*     3.9    29.6    -      -       +      -
    451B  LEU*     3.5    22.9    -      -       +      -
    452B  LEU*     4.1     7.0    -      -       +      -
    455B  MET*     3.9    31.0    -      -       +      -
    745Q  LEU*     5.2     2.0    -      -       +      -
    748Q  LEU*     5.1     2.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 274 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270B  ASP      2.9    16.9    +      -       -      +
    271B  GLN*     3.5    39.9    -      -       -      +
    272B  THR      3.3     0.2    -      -       -      -
    273B  PHE*     1.3    75.9    -      -       -      +
    275B  SER*     1.3    56.7    +      -       -      +
    277B  VAL*     3.3     9.2    +      -       -      +
    278B  ASP*     3.0    27.0    +      -       +      +
    451B  LEU*     4.1    27.4    -      -       +      -
    744Q  LEU*     6.5     0.2    -      -       +      -
    748Q  LEU*     4.3    23.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with SER 275 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235B  PRO*     4.1    22.2    -      -       -      +
    240B  VAL*     4.3    19.9    -      -       -      +
    243B  ARG*     6.2     3.8    -      -       -      -
    244B  ILE*     5.5     0.7    -      -       -      -
    271B  GLN      3.2    14.3    +      -       -      -
    272B  THR*     3.4    11.7    -      -       -      -
    273B  PHE      3.2     0.4    -      -       -      -
    274B  ILE*     1.3    77.2    -      -       -      +
    276B  ILE*     1.3    57.8    +      -       -      +
    278B  ASP*     3.4     8.2    +      -       -      +
    279B  TRP*     3.0    26.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with ILE 276 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235B  PRO*     6.0     0.4    -      -       -      -
    272B  THR*     3.0    24.5    +      -       +      +
    273B  PHE*     3.1    19.5    +      -       +      +
    275B  SER*     1.3    75.2    -      -       -      +
    277B  VAL*     1.3    65.3    +      -       -      +
    279B  TRP*     3.3    17.9    +      -       +      +
    280B  ALA*     3.1    19.1    +      -       -      +
    298B  LEU*     5.1     3.1    -      -       +      -
    305B  LEU*     4.0    54.3    -      -       +      +
    306B  LEU*     4.1    23.1    -      -       +      +
    309B  ASP*     4.4    10.3    -      -       +      +
    372B  LYS*     4.8    12.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 277 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    273B  PHE*     2.9    45.9    +      -       +      +
    274B  ILE      3.6     8.1    -      -       -      +
    276B  ILE*     1.3    78.1    -      -       -      +
    278B  ASP*     1.3    60.7    +      -       -      +
    280B  ALA*     3.3     5.9    +      -       -      +
    281B  ARG*     3.0    22.9    +      -       +      +
    298B  LEU*     4.4    14.4    -      -       +      -
    745Q  LEU*     4.4     3.8    -      -       +      -
    748Q  LEU*     3.7    42.0    -      -       +      +
    749Q  LEU*     4.1    22.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 278 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243B  ARG*     5.5     4.4    +      -       -      -
    274B  ILE*     3.0    14.8    +      -       +      +
    275B  SER*     3.7    10.7    -      -       -      +
    276B  ILE      3.3     0.4    -      -       -      -
    277B  VAL*     1.3    76.7    -      -       -      +
    279B  TRP*     1.3    62.7    +      -       -      +
    281B  ARG*     3.1    52.1    +      -       -      +
    282B  ARG*     3.4    21.9    -      -       -      +
    748Q  LEU      5.8     0.7    -      -       -      -
    751Q  LYS*     5.2     1.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 279 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230B  LEU*     4.5    13.5    +      -       +      +
    233B  LEU*     3.5    31.0    -      -       +      +
    234B  GLU*     3.9     9.8    +      -       -      -
    235B  PRO*     4.0    20.6    -      -       +      +
    275B  SER      3.0    14.0    +      -       -      +
    276B  ILE*     3.4    19.7    -      -       +      +
    277B  VAL      3.2     0.2    -      -       -      -
    278B  ASP*     1.3    77.7    +      -       -      +
    280B  ALA*     1.3    75.8    +      -       +      +
    282B  ARG*     3.3    11.1    +      -       -      +
    283B  CYS*     3.3    41.1    +      -       -      -
    305B  LEU*     4.5    16.2    -      -       +      -
    369B  VAL*     4.9     1.7    -      -       -      +
    372B  LYS*     3.4    58.6    -      -       +      +
    373B  PHE*     4.1     8.3    -      -       -      -
    376B  LEU*     3.8    28.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 280 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    276B  ILE      3.1    13.2    +      -       -      +
    277B  VAL      3.7     4.0    -      -       -      +
    279B  TRP*     1.3    98.5    -      -       +      +
    281B  ARG*     1.3    57.0    +      -       -      +
    283B  CYS*     2.9    27.0    +      -       -      +
    286B  PHE*     3.1    26.7    -      -       +      -
    298B  LEU*     4.3    18.4    -      -       +      -
    376B  LEU*     4.2    11.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 281 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277B  VAL      3.0    16.3    +      -       -      +
    278B  ASP*     3.1    38.8    +      -       -      +
    280B  ALA*     1.3    76.2    -      -       -      +
    282B  ARG*     1.3    76.9    +      -       -      +
    286B  PHE*     3.9    10.9    -      -       +      -
    287B  LYS*     3.4    23.2    -      -       -      +
    294B  GLN*     4.9     4.6    +      -       -      +
    748Q  LEU      4.3    10.3    -      -       -      +
    749Q  LEU*     4.2    29.2    -      -       +      +
    751Q  LYS*     3.5    54.5    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 282 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232B  GLN      4.6     3.6    +      -       -      -
    233B  LEU*     3.3    61.7    +      -       +      +
    278B  ASP*     3.4    30.3    -      -       -      +
    279B  TRP*     3.3     9.6    +      -       -      +
    280B  ALA      3.1     0.4    -      -       -      -
    281B  ARG*     1.3   101.3    -      -       -      +
    283B  CYS*     1.3    64.5    +      -       -      +
    284B  MET      3.8     0.2    +      -       -      -
    287B  LYS*     3.7    14.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with CYS 283 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230B  LEU*     4.1    15.9    -      -       -      -
    233B  LEU*     3.7     9.9    -      -       -      -
    279B  TRP*     3.3    54.4    +      -       -      -
    280B  ALA*     2.9    14.2    +      -       -      +
    282B  ARG*     1.3    79.5    -      -       -      +
    284B  MET*     1.3    71.8    +      -       -      +
    286B  PHE*     4.3     5.2    -      -       +      -
    287B  LYS*     3.0    28.3    +      -       -      +
    373B  PHE*     4.1    10.3    -      -       +      -
    376B  LEU*     4.7     1.8    -      -       +      -
----------------------------------------------------------
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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