Contacts of the helix formed by residues 260 - 284 (chain C) in PDB entry 2R7D


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 260 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    202C  TYR*     4.0    26.9    -      -       +      +
    203C  GLN*     3.3    28.0    -      -       -      +
    206C  GLN*     3.6    25.4    -      -       +      +
    258C  PRO*     3.0    12.3    -      -       +      +
    259C  LYS*     1.3    99.7    -      -       -      +
    261C  GLU*     1.3    65.7    +      -       -      +
    262C  MSE      4.2     0.7    -      -       -      +
    263C  ARG*     3.0    23.6    +      -       +      +
    264C  THR*     3.7     4.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 261 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    206C  GLN*     3.2    16.8    +      -       -      +
    209C  LEU*     4.0    14.1    -      -       +      +
    220C  ALA*     4.9     1.6    -      -       +      -
    224C  ARG*     2.7    51.3    +      -       -      +
    227C  ARG*     4.7     5.8    +      -       -      +
    259C  LYS      3.7     0.8    +      -       -      -
    260C  PRO*     1.3    71.2    -      -       -      +
    262C  MSE      1.3    58.3    +      -       -      +
    264C  THR*     2.9    13.3    +      -       -      -
    265C  VAL*     2.9    35.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with MSE 262 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  ILE*     3.9    26.7    -      -       +      -
    202C  TYR*     4.0    11.2    -      -       +      +
    205C  ALA*     3.6    25.4    -      -       +      +
    206C  GLN*     2.9    29.4    +      -       +      +
    209C  LEU*     3.9    24.0    -      -       +      -
    216C  PHE*     4.0    23.8    -      -       +      +
    219C  LEU*     4.5     9.0    -      -       +      -
    220C  ALA*     4.8     0.4    -      -       -      -
    260C  PRO      3.2     0.4    -      -       -      -
    261C  GLU*     1.3    76.4    -      -       -      +
    263C  ARG*     1.3    61.3    +      -       -      +
    265C  VAL*     3.6    30.4    -      -       +      +
    266C  VAL*     3.0    31.5    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 263 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     94C  ASP*     2.5    37.8    +      -       -      +
    202C  TYR*     3.4    44.7    +      -       +      +
    242C  GLU*     5.1     9.2    +      -       -      -
    257C  LEU*     4.0    24.0    -      -       -      +
    258C  PRO*     2.9    32.3    +      -       -      +
    259C  LYS*     4.2    21.3    -      -       -      +
    260C  PRO*     3.0    19.8    +      -       +      +
    262C  MSE      1.3    78.2    -      -       -      +
    264C  THR*     1.3    60.7    +      -       -      +
    266C  VAL*     3.5     2.8    +      -       -      +
    267C  GLN*     3.1    27.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with THR 264 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    227C  ARG*     3.2    39.6    +      -       -      +
    259C  LYS*     5.0     4.7    +      -       -      +
    260C  PRO      4.1     6.6    +      -       -      -
    261C  GLU*     2.9    13.8    +      -       -      -
    263C  ARG*     1.3    79.1    -      -       -      +
    265C  VAL*     1.3    64.6    +      -       -      +
    267C  GLN*     3.4    17.4    +      -       -      +
    268C  GLU*     3.1    16.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 265 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219C  LEU*     3.6    40.4    -      -       +      +
    220C  ALA*     3.8    21.8    -      -       +      +
    223C  ALA*     3.7    13.8    -      -       +      +
    227C  ARG*     4.3     4.9    -      -       -      +
    261C  GLU*     2.9    34.3    +      -       +      +
    262C  MSE      3.6    23.1    -      -       +      +
    263C  ARG      3.2     0.2    -      -       -      -
    264C  THR*     1.3    73.5    -      -       -      +
    266C  VAL*     1.3    66.0    +      -       +      +
    268C  GLU*     3.1     6.1    +      -       -      +
    269C  CYS*     3.0    24.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 266 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92C  ILE*     3.8    37.9    -      -       +      +
    102C  ASP*     4.5     6.3    -      -       -      +
    104C  VAL*     5.1     7.2    -      -       +      -
    202C  TYR*     3.7    33.4    -      -       +      +
    262C  MSE      3.0    23.7    +      -       +      +
    263C  ARG      3.8     0.2    -      -       -      +
    265C  VAL*     1.3    75.7    -      -       +      +
    267C  GLN*     1.3    64.5    +      -       -      +
    269C  CYS*     3.1    18.3    +      -       -      +
    270C  MSE      3.1    31.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLN 267 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    202C  TYR*     5.5     0.4    +      -       -      -
    227C  ARG*     5.8     1.4    -      -       -      -
    239C  ASP*     4.1    20.8    +      -       -      +
    263C  ARG*     3.1    15.4    +      -       +      +
    264C  THR*     3.5    22.1    -      -       -      +
    265C  VAL      3.2     0.4    -      -       -      -
    266C  VAL*     1.3    76.6    -      -       -      +
    268C  GLU*     1.3    66.3    +      -       -      +
    270C  MSE      3.2    12.2    +      -       +      +
    271C  THR*     3.1    28.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 268 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    223C  ALA*     3.4    25.4    -      -       +      +
    226C  SER*     2.7    30.4    +      -       -      -
    227C  ARG*     3.0    40.0    +      -       -      +
    230C  ARG*     2.8    39.7    +      -       -      -
    264C  THR      3.1     4.4    +      -       -      -
    265C  VAL      3.1     7.2    +      -       -      +
    267C  GLN*     1.3    77.1    -      -       -      +
    269C  CYS*     1.3    61.5    +      -       -      +
    271C  THR*     3.2     8.1    +      -       -      +
    272C  LEU*     2.9    30.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 269 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    104C  VAL*     3.9    24.9    -      -       +      -
    116C  LEU*     4.1    13.7    -      -       +      -
    118C  VAL*     3.6     8.9    -      -       +      +
    219C  LEU*     4.0    30.1    -      -       -      -
    222C  LEU*     6.3     1.3    -      -       -      -
    223C  ALA*     5.3     2.7    -      -       -      -
    265C  VAL*     3.0    27.6    +      -       -      -
    266C  VAL*     3.1     9.6    +      -       -      +
    268C  GLU*     1.3    73.8    -      -       -      +
    270C  MSE      1.3    62.7    +      -       +      +
    272C  LEU*     3.3    12.7    +      -       -      +
    273C  ALA*     2.9    28.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with MSE 270 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    102C  ASP*     3.4    38.8    -      -       -      +
    104C  VAL*     3.7    27.4    -      -       +      -
    118C  VAL*     3.8    12.3    -      -       +      -
    266C  VAL*     3.1    26.9    +      -       +      +
    267C  GLN*     3.2    10.5    +      -       +      +
    269C  CYS*     1.3    77.6    -      -       +      +
    271C  THR*     1.3    58.4    +      -       -      +
    273C  ALA*     3.2     6.2    +      -       -      +
    274C  GLY*     2.9    25.3    +      -       -      -
    335C  TYR*     4.3     6.2    +      -       -      +
    339C  THR*     3.6    35.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 271 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230C  ARG*     3.9    30.7    +      -       -      +
    267C  GLN*     3.1    18.8    +      -       -      +
    268C  GLU*     3.5    16.7    +      -       -      +
    270C  MSE      1.3    74.3    -      -       -      +
    272C  LEU*     1.3    61.2    +      -       +      +
    274C  GLY      3.2     0.9    +      -       -      -
    275C  TRP*     2.9    28.3    +      -       +      +
    330C  MSE      3.5    30.5    -      -       +      +
    332C  LEU*     4.1     9.9    -      -       +      -
    335C  TYR*     3.5    11.7    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 272 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    116C  LEU*     3.4    31.6    -      -       +      -
    177C  LEU*     3.5    19.2    -      -       +      +
    179C  LEU*     4.3    18.2    -      -       +      -
    183C  GLY      5.9     0.9    -      -       -      +
    222C  LEU*     4.9     8.3    -      -       +      +
    223C  ALA*     5.3     1.1    -      -       -      +
    226C  SER*     3.2    35.4    -      -       -      +
    230C  ARG*     6.3     0.2    -      -       -      -
    268C  GLU*     2.9    23.2    +      -       +      +
    269C  CYS*     3.6     8.7    -      -       -      +
    271C  THR*     1.3    76.5    -      -       +      +
    273C  ALA*     1.3    53.6    +      -       -      +
    275C  TRP*     3.3    30.1    +      -       +      +
    276C  GLY      2.8    30.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with ALA 273 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    118C  VAL*     3.5    34.3    -      -       +      +
    175C  ILE*     3.8    19.9    -      -       +      +
    177C  LEU*     4.6     1.1    -      -       -      +
    269C  CYS      2.9    13.1    +      -       -      +
    270C  MSE      3.2     8.9    +      -       -      +
    272C  LEU*     1.3    79.1    -      -       -      +
    274C  GLY*     1.3    53.2    +      -       -      +
    276C  GLY*     3.4     1.0    +      -       -      -
    277C  THR*     2.7    37.9    +      -       -      -
    338C  ALA*     5.7     0.4    -      -       -      -
    339C  THR*     3.9    10.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLY 274 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    270C  MSE      2.9    12.4    +      -       -      -
    273C  ALA*     1.3    73.4    -      -       -      +
    275C  TRP*     1.3    64.4    +      -       -      +
    277C  THR*     3.3     4.6    +      -       -      -
    278C  ALA*     3.0    18.4    +      -       -      +
    335C  TYR*     3.6    14.6    -      -       -      -
    336C  ALA      2.9    35.1    +      -       -      +
    337C  GLN*     5.1     0.2    -      -       -      -
    338C  ALA*     4.8     5.2    -      -       -      -
    339C  THR*     5.3     0.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 275 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177C  LEU*     3.9    21.1    -      -       +      -
    179C  LEU*     4.8     4.0    -      -       +      -
    183C  GLY      5.0     6.5    -      -       -      -
    184C  ASN*     5.7     0.7    -      -       -      -
    185C  ALA*     3.9    34.3    -      -       +      -
    271C  THR*     2.9    16.7    +      -       +      +
    272C  LEU*     3.4    20.9    -      -       +      +
    274C  GLY*     1.3    76.4    -      -       -      +
    276C  GLY*     1.3    61.9    +      -       -      +
    278C  ALA*     3.2     4.3    +      -       -      +
    279C  ILE*     3.0    40.4    +      -       +      +
    332C  LEU*     3.9    24.9    -      -       +      +
    333C  ASP      5.3     1.2    -      -       -      +
    334C  LEU*     3.5    38.6    -      -       +      +
    335C  TYR*     3.6     6.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLY 276 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175C  ILE*     4.4     3.1    -      -       -      -
    177C  LEU*     4.2     4.7    -      -       -      -
    188C  VAL*     3.4    36.2    -      -       -      +
    272C  LEU      2.8    16.3    +      -       -      -
    273C  ALA      3.8     1.6    -      -       -      -
    275C  TRP*     1.3    79.0    -      -       -      +
    277C  THR*     1.3    55.6    +      -       -      +
    279C  ILE*     3.2     7.1    +      -       -      +
    280C  PHE*     2.9    26.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with THR 277 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175C  ILE*     3.5    17.2    -      -       -      +
    190C  VAL*     4.8     4.9    -      -       -      -
    273C  ALA      2.7    25.2    +      -       -      -
    274C  GLY*     3.4     9.2    -      -       -      -
    276C  GLY*     1.3    79.0    -      -       -      +
    278C  ALA*     1.3    56.9    +      -       -      +
    280C  PHE*     3.5     7.3    +      -       -      +
    281C  ALA*     3.0    27.0    +      -       -      +
    288C  LEU*     4.0     9.9    -      -       +      -
    336C  ALA*     4.4     4.0    -      -       +      -
    338C  ALA*     3.7    13.0    -      -       +      +
    350C  VAL*     3.7    30.3    -      -       +      -
    354C  LEU*     4.2    14.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 278 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274C  GLY      3.0    12.0    +      -       -      +
    275C  TRP      3.2     7.4    +      -       -      +
    277C  THR*     1.3    73.6    -      -       -      +
    279C  ILE*     1.3    56.7    +      -       -      +
    281C  ALA*     3.6     2.4    -      -       -      +
    282C  ASP*     2.7    37.6    +      -       -      +
    290C  PHE*     3.6    26.6    -      -       +      -
    334C  LEU*     3.7    10.3    -      -       +      +
    335C  TYR*     3.7    28.9    -      -       -      +
    336C  ALA*     4.0     2.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with ILE 279 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188C  VAL*     4.7    17.9    -      -       +      -
    275C  TRP*     3.0    38.0    +      -       +      +
    276C  GLY*     3.2    10.3    +      -       -      +
    278C  ALA*     1.3    76.8    -      -       -      +
    280C  PHE*     1.3    64.3    +      -       -      +
    282C  ASP*     3.8     0.6    -      -       -      +
    283C  ASP*     2.9    45.3    +      -       -      +
    334C  LEU*     3.5    36.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with PHE 280 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188C  VAL*     4.2    17.0    -      -       +      +
    189C  ASP*     4.8     3.6    -      -       -      -
    190C  VAL*     3.5    56.5    -      -       +      -
    276C  GLY      2.9    16.2    +      -       -      +
    277C  THR      3.7     4.3    -      -       -      +
    279C  ILE*     1.3    77.9    -      -       -      +
    281C  ALA*     1.3    62.7    +      -       -      +
    283C  ASP*     3.5     3.0    +      -       -      +
    284C  ASN*     2.7    50.8    +      -       -      +
    286C  ILE*     4.3     6.7    -      -       +      -
    354C  LEU*     4.0    16.2    -      -       +      -
    357C  PHE*     3.9    29.2    -      +       -      -
    358C  LEU*     4.5     8.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with ALA 281 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    277C  THR      3.0    10.4    +      -       -      +
    278C  ALA      3.6     3.4    -      -       -      +
    279C  ILE      3.2     0.2    -      -       -      -
    280C  PHE*     1.3    76.6    -      -       -      +
    282C  ASP*     1.3    56.0    +      -       -      +
    284C  ASN      3.2     1.0    +      -       -      -
    285C  GLU      2.7    30.7    +      -       -      -
    286C  ILE*     2.8    36.8    +      -       +      +
    288C  LEU*     3.2    36.1    -      -       +      -
    290C  PHE*     3.9     4.9    -      -       +      -
    354C  LEU*     5.1     1.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 282 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    278C  ALA      2.7    21.0    +      -       -      +
    279C  ILE      3.8     2.9    -      -       -      +
    281C  ALA*     1.3    73.6    -      -       -      +
    283C  ASP*     1.3    69.1    +      -       -      +
    285C  GLU*     3.3    18.3    +      -       -      +
    290C  PHE*     4.4     1.5    -      -       -      -
    324C  PRO*     3.4    33.7    -      -       +      +
    334C  LEU*     4.0    13.6    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASP 283 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    279C  ILE*     2.9    31.8    +      -       -      +
    280C  PHE*     3.8     6.7    -      -       -      +
    282C  ASP*     1.3    86.8    -      -       -      +
    284C  ASN*     1.3    64.2    +      -       -      +
    285C  GLU*     3.4    12.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASN 284 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    280C  PHE*     2.7    56.2    +      -       -      +
    283C  ASP*     1.3    80.9    -      -       -      +
    285C  GLU*     1.3    74.0    +      -       -      +
    286C  ILE*     3.2    14.0    +      -       +      +
    357C  PHE*     3.2    39.8    -      -       +      -
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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