Contacts of the helix formed by residues 140 - 164 (chain B) in PDB entry 1BMO


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 ASP 140 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138B  CYS      3.4     2.0    +      -       -      -
    139B  LEU*     1.3    72.9    -      -       -      +
    141B  SER*     1.3    63.1    +      -       -      +
    143B  LEU*     3.6    10.1    +      -       -      +
    144B  THR*     3.7    16.8    +      -       -      +
    251B  ARG*     2.5    37.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with SER 141 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139B  LEU*     3.0    15.6    -      -       -      +
    140B  ASP*     1.3    78.3    -      -       -      +
    142B  GLU*     1.3    67.2    +      -       -      +
    143B  LEU      3.1     0.3    +      -       -      -
    144B  THR*     2.9    23.5    +      -       -      -
    145B  GLU*     3.5    11.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 142 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    139B  LEU*     2.7    52.0    +      -       +      +
    141B  SER*     1.3    77.3    +      -       -      +
    143B  LEU*     1.3    57.0    +      -       -      +
    145B  GLU*     3.3     3.2    +      -       -      -
    146B  PHE*     2.8    30.0    +      -       -      +
    245B  MET*     3.5    36.9    -      -       +      +
    247B  HIS*     2.8    35.2    +      -       -      -
    248B  CYS*     3.6     9.0    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 143 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    138B  CYS*     3.7    13.2    -      -       -      -
    139B  LEU      3.1    11.9    +      -       -      +
    140B  ASP*     3.7    11.4    -      -       -      +
    141B  SER      3.1     0.2    +      -       -      -
    142B  GLU*     1.3    76.9    -      -       -      +
    144B  THR*     1.3    66.1    +      -       +      +
    146B  PHE*     3.2    13.5    +      -       -      +
    147B  PRO*     3.2    12.1    -      -       -      +
    248B  CYS*     4.5     1.1    -      -       +      +
    251B  ARG*     3.4    45.5    -      -       +      +
    252B  PHE*     3.6    39.4    -      -       +      +
    255B  THR*     4.6    11.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 144 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    140B  ASP      3.7    10.0    +      -       -      +
    141B  SER*     2.9    16.7    +      -       -      -
    143B  LEU*     1.3    81.7    -      -       +      +
    145B  GLU*     1.3    58.9    +      -       -      +
    147B  PRO*     3.5    11.8    -      -       -      +
    148B  LEU*     3.6    13.0    -      -       -      +
    196B  VAL*     5.5     0.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 145 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141B  SER*     3.5    12.2    +      -       -      +
    142B  GLU*     3.3     9.8    +      -       -      +
    143B  LEU      3.2     0.4    -      -       -      -
    144B  THR*     1.3    78.4    +      -       -      +
    146B  PHE*     1.3    64.4    +      -       -      +
    147B  PRO      3.6     0.2    -      -       -      -
    148B  LEU*     3.6     9.6    +      -       -      +
    149B  ARG*     2.8    66.9    +      -       +      +
    196B  VAL*     3.7    30.0    -      -       +      +
    245B  MET*     3.2    24.4    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 146 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142B  GLU      2.8    11.4    +      -       -      +
    143B  LEU*     3.3    13.0    -      -       -      +
    145B  GLU*     1.3    74.0    -      -       -      +
    147B  PRO*     1.3    75.6    -      -       +      +
    149B  ARG*     2.9     6.8    +      -       -      +
    150B  MET*     2.9    58.6    +      -       +      -
    243B  ILE*     4.3     2.7    -      -       +      -
    244B  PRO      3.3    26.9    -      -       -      -
    245B  MET*     3.6    23.3    -      -       +      -
    248B  CYS*     3.7     9.9    -      -       +      -
    249B  THR*     3.5    26.2    -      -       -      -
    252B  PHE*     3.3    45.8    -      +       +      -
    253B  PHE*     4.6     0.2    -      +       -      -
----------------------------------------------------------
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Residues in contact with PRO 147 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    143B  LEU      3.2    14.6    -      -       -      +
    144B  THR*     3.5    11.9    -      -       -      +
    145B  GLU      3.7     0.2    -      -       -      -
    146B  PHE*     1.3    95.8    -      -       +      +
    148B  LEU*     1.3    61.4    +      -       +      +
    150B  MET      3.9     0.2    -      -       -      -
    151B  ARG*     2.9    42.4    +      -       -      +
    252B  PHE*     3.3    27.1    -      -       +      -
    272B  CYS      4.5    11.4    -      -       -      +
    273B  PHE*     4.1    14.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 148 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    144B  THR      3.6    23.8    -      -       -      +
    145B  GLU      4.0     4.5    -      -       -      +
    146B  PHE      3.2     0.2    -      -       -      -
    147B  PRO*     1.3    83.6    -      -       +      +
    149B  ARG*     1.3    64.1    +      -       -      +
    151B  ARG*     3.6    23.7    +      -       -      +
    152B  ASP*     3.3    24.4    +      -       -      +
    196B  VAL*     3.5    31.6    -      -       +      +
    199B  LEU*     3.8    15.0    -      -       +      +
    200B  ALA*     3.4    39.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 149 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145B  GLU*     2.8    60.9    +      -       -      +
    146B  PHE*     2.9    11.8    +      -       -      +
    148B  LEU*     1.3    78.5    -      -       -      +
    150B  MET*     1.3    60.0    +      -       -      +
    152B  ASP*     3.8     4.5    +      -       -      +
    153B  TRP*     3.4    18.0    +      -       -      +
    193B  ASP*     4.4    20.2    +      -       -      -
    194B  HIS      3.7    19.8    +      -       -      +
    195B  PRO*     4.9     1.8    -      -       -      +
    196B  VAL*     3.9    16.0    -      -       -      +
    199B  LEU*     4.0    15.0    -      -       -      +
    244B  PRO*     3.8    32.1    -      -       +      +
    245B  MET*     4.4    11.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with MET 150 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    146B  PHE*     2.9    51.4    +      -       +      +
    147B  PRO      4.2     1.3    -      -       -      +
    149B  ARG*     1.3    70.9    -      -       -      +
    151B  ARG*     1.3    67.5    +      -       -      +
    152B  ASP      3.2     1.6    -      -       -      -
    153B  TRP*     3.1    30.2    +      -       +      +
    154B  LEU*     3.0    31.2    +      -       -      +
    238B  LEU*     3.8    30.3    -      -       +      -
    243B  ILE*     4.3    16.4    -      -       +      -
    244B  PRO*     4.6     3.1    -      -       +      +
    253B  PHE*     4.0     9.2    -      -       +      -
    269B  TRP*     5.1     1.6    -      -       -      -
    273B  PHE*     3.4    28.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ARG 151 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    147B  PRO*     2.9    20.3    +      -       -      +
    148B  LEU*     3.6    38.3    +      -       -      +
    149B  ARG      3.5     0.2    -      -       -      -
    150B  MET*     1.3    79.5    -      -       -      +
    152B  ASP*     1.3    62.7    +      -       -      +
    154B  LEU*     3.2    24.1    +      -       -      +
    155B  LYS      3.4     4.7    +      -       -      -
    199B  LEU      4.6     2.4    +      -       -      -
    200B  ALA*     5.2     0.2    -      -       -      +
    203B  PHE*     3.3    56.4    -      -       -      +
    210B  TYR*     3.9    22.9    -      -       +      -
    214B  VAL*     4.2    15.3    -      -       +      -
    273B  PHE*     2.6    53.4    +      -       +      +
    274B  GLY*     4.1     1.8    -      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 152 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    148B  LEU      3.3    14.1    +      -       -      +
    149B  ARG      3.9     4.7    -      -       -      +
    151B  ARG*     1.3    77.1    -      -       -      +
    153B  TRP*     1.3    68.0    +      -       -      +
    154B  LEU      3.0     1.2    +      -       -      -
    155B  LYS*     3.1    29.9    +      -       -      +
    156B  ASN*     3.1    38.4    +      -       -      -
    189B  LEU*     4.7     6.1    -      -       -      +
    190B  GLU      5.1     0.3    -      -       -      +
    192B  GLY      4.5    10.6    +      -       -      +
    194B  HIS*     4.7     2.8    -      -       -      -
    199B  LEU*     4.0    28.9    -      -       +      +
    210B  TYR*     4.3    14.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with TRP 153 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149B  ARG      3.4    12.8    +      -       -      +
    150B  MET*     3.1    25.3    +      -       +      +
    152B  ASP*     1.3    81.0    -      -       -      +
    154B  LEU*     1.3    76.3    +      -       +      +
    156B  ASN*     3.5     6.4    +      -       +      +
    157B  VAL*     3.0    53.8    +      -       +      +
    217B  GLN*     3.2    31.9    -      -       -      -
    237B  PRO      5.9     0.2    -      -       -      -
    238B  LEU*     3.6    15.5    -      -       +      -
    242B  LEU*     4.4    18.7    +      -       +      +
    243B  ILE*     3.6    33.2    -      -       +      -
    244B  PRO*     3.8    25.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with LEU 154 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150B  MET*     3.0    24.8    +      -       -      +
    151B  ARG*     3.3    13.9    -      -       +      +
    152B  ASP      3.1     0.2    -      -       -      -
    153B  TRP*     1.3    85.8    -      -       +      +
    155B  LYS*     1.3    68.4    +      -       -      +
    157B  VAL*     2.9    17.9    +      -       +      +
    158B  LEU*     2.9    14.4    +      -       -      +
    213B  PRO*     4.0    15.3    -      -       +      +
    214B  VAL*     4.0    33.4    -      -       +      +
    216B  TRP*     5.5     6.4    -      -       +      -
    217B  GLN*     3.3    47.6    -      -       +      +
    269B  TRP*     4.6     8.1    -      -       +      -
    273B  PHE*     5.3     4.5    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 155 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    151B  ARG      3.4     1.4    +      -       -      -
    152B  ASP*     3.1    29.9    +      -       -      +
    154B  LEU*     1.3    78.7    -      -       -      +
    156B  ASN*     1.3    73.1    +      -       -      +
    158B  LEU*     3.5     2.6    +      -       -      +
    159B  VAL*     2.9    42.6    +      -       +      +
    182B  ILE*     4.4     8.7    -      -       +      -
    188B  ARG*     4.5     6.9    -      -       +      +
    189B  LEU*     2.9    33.4    +      -       -      +
    190B  GLU      4.7     0.8    +      -       -      -
    202B  ASP*     5.1     0.9    -      -       -      -
    209B  MET*     4.3    28.3    -      -       +      +
    210B  TYR*     3.7    38.4    -      -       +      -
    213B  PRO*     3.9    17.1    -      -       +      +
----------------------------------------------------------
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Residues in contact with ASN 156 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152B  ASP*     3.1    43.5    +      -       -      +
    153B  TRP*     3.9     6.3    -      -       +      +
    155B  LYS*     1.3    90.3    +      -       -      +
    157B  VAL*     1.3    59.9    +      -       -      +
    159B  VAL*     3.6     3.5    -      -       -      +
    160B  THR*     2.9    35.1    +      -       +      +
    188B  ARG*     4.6    10.6    +      -       -      -
    191B  ALA*     3.3    40.6    +      -       +      +
    192B  GLY      4.7     0.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 157 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153B  TRP*     3.0    61.8    +      -       +      +
    154B  LEU*     2.9     9.9    +      -       +      +
    156B  ASN*     1.3    75.5    -      -       +      +
    158B  LEU*     1.3    59.0    +      -       -      +
    160B  THR*     3.0     8.8    +      -       -      +
    161B  LEU*     2.9    33.3    +      -       +      +
    216B  TRP*     4.3    22.7    -      -       +      -
    217B  GLN*     6.3     0.7    -      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 158 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  LEU      2.9    15.4    +      -       -      +
    155B  LYS*     3.8     5.8    -      -       -      +
    157B  VAL*     1.3    77.2    -      -       -      +
    159B  VAL*     1.3    63.9    +      -       +      +
    161B  LEU*     3.4     5.5    +      -       +      +
    162B  TYR*     3.2    16.5    +      -       -      +
    171B  LEU*     3.7    20.8    -      -       +      +
    179B  VAL*     3.2    26.9    -      -       +      +
    182B  ILE*     5.5     0.2    -      -       +      -
    212B  PHE*     3.6    23.8    -      -       +      -
    213B  PRO*     3.5    34.8    -      -       +      -
    216B  TRP*     3.6    43.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with VAL 159 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    155B  LYS*     2.9    32.4    +      -       +      +
    156B  ASN*     3.6     7.6    -      -       -      +
    157B  VAL      3.2     0.2    -      -       -      -
    158B  LEU*     1.3    75.8    -      -       -      +
    160B  THR*     1.3    60.7    +      -       +      +
    162B  TYR*     2.9    21.5    +      -       -      +
    163B  GLU*     3.0    27.5    +      -       -      +
    179B  VAL*     3.9    10.3    -      -       +      -
    182B  ILE*     4.2    24.0    -      -       +      -
    183B  HIS*     3.9    17.7    -      -       +      -
    188B  ARG*     3.3    32.3    -      -       -      +
----------------------------------------------------------
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Residues in contact with THR 160 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    156B  ASN*     2.9    22.5    +      -       +      +
    157B  VAL*     3.0    15.1    +      -       -      +
    159B  VAL*     1.3    76.5    -      -       +      +
    161B  LEU*     1.3    55.9    +      -       -      +
    163B  GLU*     3.7    19.4    -      -       +      +
    164B  ARG*     3.0    36.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 161 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    157B  VAL*     2.9    24.6    +      -       +      +
    158B  LEU*     3.5     7.9    -      -       +      +
    159B  VAL      3.1     0.2    -      -       -      -
    160B  THR*     1.3    74.9    +      -       -      +
    162B  TYR*     1.3    56.8    +      -       -      +
    164B  ARG*     3.2    27.9    +      -       -      +
    165B  ASP*     2.7    34.5    +      -       -      +
    170B  LEU*     3.4    32.0    -      -       +      +
    171B  LEU*     4.2    18.4    -      -       +      -
    216B  TRP*     3.5    37.9    -      -       +      -
----------------------------------------------------------
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Residues in contact with TYR 162 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    158B  LEU      3.2     1.4    +      -       -      -
    159B  VAL      2.9     7.6    +      -       -      +
    161B  LEU*     1.3    80.2    -      -       -      +
    163B  GLU*     1.3    72.0    +      -       +      +
    165B  ASP*     3.3    17.3    +      -       -      +
    171B  LEU*     3.5    12.3    -      -       +      +
    176B  LYS*     3.8    46.8    +      -       -      -
    179B  VAL*     3.5    21.5    -      -       +      -
    180B  LYS*     3.6    33.8    +      -       +      +
    183B  HIS*     3.2    40.2    +      +       +      -
    184B  GLU*     3.5    20.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with GLU 163 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    159B  VAL*     3.0    24.1    +      -       -      +
    160B  THR*     3.9    18.4    -      -       +      +
    161B  LEU      3.2     0.2    -      -       -      -
    162B  TYR*     1.3    90.3    -      -       +      +
    164B  ARG*     1.3    61.6    +      -       +      +
    165B  ASP      3.6     4.2    +      -       -      +
    183B  HIS*     2.9    29.6    +      -       +      +
    188B  ARG*     5.5     1.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 164 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    160B  THR*     3.0    21.0    +      -       -      +
    161B  LEU*     3.3    30.5    -      -       -      +
    163B  GLU*     1.3    75.8    -      -       +      +
    165B  ASP*     1.3    64.5    +      -       -      +
    166B  GLU*     3.7     3.8    +      -       -      +
    169B  ASN*     4.4     5.2    +      -       -      +
    170B  LEU*     3.6    31.9    -      -       +      +
----------------------------------------------------------
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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