Contacts of the helix formed by residues 205 - 230 (chain B) in PDB entry 1VGO


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 GLY 205 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    198B  THR*     3.7     4.5    -      -       -      -
    204B  VAL*     1.3    77.5    -      -       -      +
    206B  LEU*     1.3    66.6    +      -       -      -
    207B  GLY*     3.0     5.9    +      -       -      -
    208B  ILE*     3.6     4.7    +      -       -      +
    209B  GLU*     3.2    19.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 206 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  GLU*     3.3    36.1    -      -       -      +
     81B  LEU*     4.4    16.4    -      -       +      -
     82B  ASP*     3.4    32.3    -      -       -      +
     84B  TYR*     5.0     8.1    -      -       +      -
    198B  THR*     3.5    19.3    -      -       +      +
    205B  GLY*     1.3    70.1    -      -       -      -
    207B  GLY*     1.3    58.3    +      -       -      +
    209B  GLU*     4.1     7.4    -      -       -      +
    210B  THR*     2.6    38.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLY 207 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12B  PRO*     6.4     2.0    -      -       -      -
     13B  GLU*     4.5    13.5    -      -       -      -
     16B  TRP*     3.6    14.9    -      -       -      -
    205B  GLY      3.0     3.6    +      -       -      -
    206B  LEU*     1.3    75.4    -      -       -      +
    208B  ILE*     1.3    65.4    +      -       -      -
    210B  THR*     3.0    16.5    +      -       -      -
    211B  LEU      3.1     7.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with ILE 208 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  TRP*     5.5     6.7    -      -       +      +
    204B  VAL*     3.6    23.3    -      -       +      -
    205B  GLY      3.6     4.0    +      -       -      +
    207B  GLY*     1.3    73.7    -      -       -      +
    209B  GLU*     1.3    57.6    +      -       -      +
    211B  LEU*     3.2    20.0    +      -       +      +
    212B  ALA*     2.8    30.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 209 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     87B  ARG*     4.1     8.3    +      -       -      -
    193B  LEU*     4.0    13.2    -      -       +      -
    194B  TRP*     5.1     2.3    -      -       -      +
    197B  GLY*     3.1    10.0    -      -       -      -
    198B  THR*     2.7    47.3    +      -       -      +
    199B  GLU*     4.6     4.6    +      -       -      +
    204B  VAL*     3.4    10.2    -      -       +      +
    205B  GLY      3.2    17.8    +      -       -      +
    206B  LEU*     4.1     9.9    -      -       +      +
    207B  GLY      3.1     0.4    +      -       -      -
    208B  ILE*     1.3    76.1    -      -       -      +
    210B  THR*     1.3    59.5    +      -       -      +
    212B  ALA*     3.0     8.3    +      -       -      +
    213B  PHE*     2.8    57.9    +      -       +      -
----------------------------------------------------------
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Residues in contact with THR 210 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     13B  GLU*     3.7    26.1    -      -       +      +
     16B  TRP*     3.9    18.2    -      -       +      -
     17B  LEU*     4.0    22.4    -      -       +      +
     61B  TYR*     5.2     1.1    +      -       +      -
     84B  TYR*     5.2     3.8    -      -       +      -
     87B  ARG*     4.3    19.9    +      -       -      +
    206B  LEU*     2.6    24.0    +      -       -      +
    207B  GLY      3.0     9.7    +      -       -      -
    209B  GLU*     1.3    78.5    -      -       -      +
    211B  LEU*     1.3    57.7    +      -       -      +
    213B  PHE*     3.6     1.4    +      -       -      +
    214B  MET*     3.1    27.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 211 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  TRP*     3.4    59.2    -      -       +      +
    207B  GLY      3.1     7.9    +      -       -      +
    208B  ILE*     3.4    24.2    -      -       +      +
    209B  GLU      3.1     0.6    -      -       -      -
    210B  THR*     1.3    76.2    -      -       -      +
    212B  ALA*     1.3    65.6    +      -       +      +
    214B  MET*     3.4    11.0    +      -       +      +
    215B  VAL*     3.0    50.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 212 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193B  LEU*     3.6    23.6    -      -       +      -
    208B  ILE*     2.8    20.8    +      -       +      +
    209B  GLU*     3.0     6.5    +      -       -      +
    211B  LEU*     1.3    81.6    -      -       +      +
    213B  PHE*     1.3    60.1    +      -       -      +
    215B  VAL*     3.3     5.9    +      -       -      +
    216B  LEU*     2.9    34.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 213 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61B  TYR*     4.2     0.9    -      -       -      +
     87B  ARG*     3.3    43.7    -      -       -      +
     91B  TRP*     3.8    15.5    -      +       +      -
    190B  TYR*     3.7    45.1    -      +       +      -
    193B  LEU*     3.6    24.9    -      -       +      -
    194B  TRP*     4.3    22.2    -      +       +      -
    209B  GLU*     2.8    51.7    +      -       +      +
    210B  THR      4.0     1.1    -      -       -      +
    212B  ALA*     1.3    72.5    -      -       -      +
    214B  MET*     1.3    54.0    +      -       -      +
    216B  LEU*     3.1     4.5    +      -       +      +
    217B  ASP*     2.6    46.7    +      -       -      +
    261B  RET      5.0     0.4    -      -       +      -
----------------------------------------------------------
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Residues in contact with MET 214 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16B  TRP*     3.9    21.5    -      -       +      +
     19B  ILE*     3.9    32.1    -      -       +      -
     20B  GLY*     3.7    22.0    -      -       -      -
     23B  LEU*     4.2    19.7    -      -       +      -
     24B  MET*     5.4     0.7    -      -       +      +
     61B  TYR*     3.3    22.4    +      -       +      +
    210B  THR*     3.1    20.2    +      -       +      +
    211B  LEU*     3.6    26.5    -      -       +      +
    213B  PHE*     1.3    77.2    -      -       -      +
    215B  VAL*     1.3    64.7    +      -       +      +
    217B  ASP*     3.6     0.9    -      -       -      +
    218B  VAL*     2.9    34.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 215 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    211B  LEU*     3.0    39.2    +      -       +      +
    212B  ALA*     3.7     6.7    -      -       -      +
    214B  MET*     1.3    82.1    -      -       +      +
    216B  LEU*     1.3    59.8    +      -       +      +
    218B  VAL*     2.9    17.5    -      -       +      +
    219B  THR*     2.6    35.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 216 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186B  LEU*     4.1    26.1    -      -       +      +
    189B  ALA*     3.9    36.8    -      -       +      +
    190B  TYR*     3.1    28.3    +      -       +      +
    193B  LEU*     4.2    20.9    -      -       +      -
    212B  ALA*     2.9    20.0    +      -       +      +
    213B  PHE*     3.5     9.4    -      -       +      +
    215B  VAL*     1.3    79.2    -      -       +      +
    217B  ASP*     1.3    59.5    +      -       -      +
    219B  THR*     3.3     4.1    +      -       -      -
    220B  ALA*     2.9    28.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with ASP 217 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  MET*     3.9    14.1    -      -       +      -
     61B  TYR*     2.7    34.7    +      -       -      +
     87B  ARG*     5.5     2.8    +      -       -      +
     90B  ASP*     4.7     0.7    -      -       -      +
     91B  TRP*     3.2    31.8    +      -       -      -
    190B  TYR*     2.9    23.9    +      -       -      -
    213B  PHE*     2.6    22.6    +      -       -      +
    214B  MET      3.6     2.0    -      -       -      +
    216B  LEU*     1.3    72.7    -      -       -      +
    218B  VAL*     1.3    56.6    +      -       -      +
    220B  ALA      3.3     1.0    +      -       -      -
    221B  LYS*     3.0    42.5    +      -       -      +
    261B  RET      3.6     2.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with VAL 218 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23B  LEU*     4.7    25.6    -      -       +      +
     24B  MET*     4.1    15.8    -      -       +      +
    214B  MET*     2.9    33.7    +      -       +      +
    215B  VAL*     2.9    25.4    -      -       +      +
    217B  ASP*     1.3    74.4    -      -       -      +
    219B  THR*     1.3    63.3    +      -       -      +
    222B  VAL*     2.8    45.9    +      -       +      -
    223B  GLY      3.2     3.6    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 219 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  LEU*     4.9     8.9    -      -       +      +
    186B  LEU*     3.8    27.0    -      -       +      +
    215B  VAL*     2.6    32.3    +      -       -      +
    216B  LEU*     3.8     4.0    -      -       -      +
    218B  VAL*     1.3    79.9    -      -       -      +
    220B  ALA*     1.3    56.2    +      -       -      +
    223B  GLY*     3.3     9.5    -      -       -      +
    224B  PHE*     3.1    25.1    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 220 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     98B  LEU*     3.7    18.4    -      -       -      +
    186B  LEU*     3.3    21.5    -      -       +      +
    187B  TRP*     4.4     6.7    +      -       +      +
    190B  TYR*     3.9     4.0    -      -       +      +
    216B  LEU      2.9    18.7    +      -       -      +
    217B  ASP      3.8     3.6    -      -       -      +
    219B  THR*     1.3    77.3    -      -       -      +
    221B  LYS*     1.3    57.3    +      -       -      +
    224B  PHE*     3.4    18.9    -      -       -      +
    261B  RET      3.8    26.2    -      -       +      -
----------------------------------------------------------
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Residues in contact with LYS 221 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     24B  MET*     3.3    31.2    -      -       +      -
     31B  PHE*     4.1     5.0    -      -       -      -
     50B  THR*     4.9     1.7    -      -       -      +
     53B  VAL*     3.5    23.9    -      -       +      +
     54B  PRO*     4.7     8.9    -      -       +      +
     57B  ALA*     3.6    23.6    -      -       +      -
     90B  ASP*     3.8     4.6    +      -       -      -
     91B  TRP*     3.9     7.3    -      -       -      -
     94B  THR*     3.1    19.4    -      -       -      +
     98B  LEU*     4.8     1.4    -      -       -      +
    217B  ASP*     3.0    20.2    +      -       -      +
    220B  ALA*     1.3    79.7    -      -       -      +
    222B  VAL*     1.3    61.5    +      -       -      +
    223B  GLY      3.5     0.7    -      -       -      -
    224B  PHE*     4.2     1.3    -      -       -      +
    225B  GLY*     3.0    25.6    +      -       -      -
    261B  RET      1.4    71.3    -      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 222 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23B  LEU      4.0    13.0    -      -       -      +
     24B  MET*     4.2    18.4    -      -       -      -
     27B  GLY*     3.9    30.7    -      -       -      -
     30B  TYR*     6.2     1.1    -      -       +      -
     31B  PHE*     3.4    13.2    -      -       +      -
     54B  PRO*     4.3     7.2    -      -       +      -
    218B  VAL*     2.8    27.8    +      -       +      +
    221B  LYS*     1.3    72.1    -      -       -      +
    223B  GLY*     1.3    59.2    +      -       -      +
    226B  PHE*     2.9    32.6    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 223 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    182B  LEU*     5.0     2.9    -      -       -      -
    218B  VAL*     3.2    10.1    +      -       -      +
    219B  THR*     3.3    15.9    +      -       -      +
    222B  VAL*     1.3    76.0    -      -       -      +
    224B  PHE*     1.3    64.4    +      -       -      +
    226B  PHE*     3.3     6.4    +      -       -      +
    227B  VAL*     3.1    28.3    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 224 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50B  THR*     5.2     0.4    -      -       +      -
     98B  LEU*     3.6    43.5    -      -       +      -
    101B  ASP*     3.9    18.8    -      -       +      -
    102B  LEU*     4.1    14.8    -      -       +      -
    179B  LEU*     3.8    27.4    -      -       +      +
    182B  LEU*     4.0    22.6    -      -       +      +
    183B  VAL*     3.9    26.9    -      -       +      -
    187B  TRP*     5.9     2.0    -      -       -      -
    219B  THR      3.1     7.7    +      -       -      +
    220B  ALA*     3.4    26.5    -      -       -      +
    222B  VAL      3.4     0.2    -      -       -      -
    223B  GLY*     1.3    74.8    -      -       -      +
    225B  GLY*     1.3    69.2    +      -       -      +
    227B  VAL*     3.2     5.5    +      -       -      +
    228B  LEU*     3.0    33.0    +      -       +      +
----------------------------------------------------------
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Residues in contact with GLY 225 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  PHE*     3.6    10.1    -      -       -      -
     50B  THR*     3.7    24.5    -      -       -      -
    221B  LYS      3.0    20.6    +      -       -      -
    224B  PHE*     1.3    82.0    -      -       -      +
    226B  PHE*     1.3    55.2    -      -       -      +
    228B  LEU*     3.9     1.5    -      -       -      +
    229B  LEU*     3.0    36.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 226 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     30B  TYR*     3.8    35.4    -      +       -      -
     31B  PHE*     3.6     9.1    -      -       +      -
     34B  ARG*     5.7     2.7    -      -       -      -
    222B  VAL*     2.9    21.7    +      -       +      +
    223B  GLY*     3.6     6.5    -      -       -      +
    224B  PHE      3.2     0.2    -      -       -      -
    225B  GLY*     1.3    76.2    -      -       -      +
    227B  VAL*     1.3    68.5    +      -       +      +
    229B  LEU*     5.2     0.7    -      -       -      -
    230B  ARG*     2.8    73.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with VAL 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175B  THR*     4.6     4.9    -      -       +      +
    178B  THR*     4.5    18.2    -      -       +      -
    179B  LEU*     3.9    22.0    -      -       +      -
    182B  LEU*     5.5     5.6    -      -       +      -
    223B  GLY      3.1    15.1    +      -       -      +
    224B  PHE*     3.7     7.2    -      -       -      +
    226B  PHE*     1.3    85.8    -      -       +      +
    228B  LEU*     1.3    62.0    +      -       -      +
    230B  ARG*     4.2     9.5    -      -       -      +
    231B  SER*     3.5    18.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 228 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     46B  TYR*     4.4     7.9    -      -       +      -
     50B  THR*     3.6    13.9    -      -       +      +
    101B  ASP*     3.5    38.6    -      -       +      +
    105B  LEU*     3.9    18.6    -      -       +      -
    175B  THR*     4.7     3.6    -      -       +      -
    179B  LEU*     3.6    28.0    -      -       +      -
    224B  PHE*     3.0    23.4    +      -       +      +
    225B  GLY      3.9     1.3    -      -       -      +
    227B  VAL*     1.3    74.4    -      -       -      +
    229B  LEU*     1.3    68.3    +      -       +      +
    230B  ARG      3.1     4.7    -      -       -      -
    231B  SER*     2.9    21.2    +      -       -      -
    234B  ILE*     3.4    31.4    -      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     31B  PHE*     4.1    20.9    -      -       +      -
     34B  ARG*     3.3    19.1    +      -       -      +
     46B  TYR*     3.9    21.3    -      -       +      -
     47B  TYR*     3.5    40.4    +      -       +      +
     50B  THR*     3.6    31.2    -      -       +      +
    225B  GLY      3.0    21.2    +      -       -      +
    226B  PHE*     4.7     1.3    -      -       -      +
    228B  LEU*     1.3    99.2    -      -       +      +
    230B  ARG*     1.3    57.3    +      -       -      +
    231B  SER      3.4     1.3    +      -       -      +
    234B  ILE*     3.9    17.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 230 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  ARG*     4.2    23.5    +      -       -      +
    226B  PHE*     2.8    59.8    +      -       +      +
    227B  VAL*     4.2     9.5    -      -       -      +
    228B  LEU      3.1     0.6    -      -       -      -
    229B  LEU*     1.3    78.6    -      -       -      +
    231B  SER*     1.3    58.3    +      -       -      +
    232B  ARG*     6.0     0.2    -      -       -      +
----------------------------------------------------------
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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