Contacts of the helix formed by residues 222 - 243 (chain A) in PDB entry 4OWT


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 THR 222 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  ILE*     6.1     0.2    -      -       +      -
    220A  HIS      3.5     0.8    -      -       -      -
    221A  GLY*     1.3    80.9    +      -       -      +
    223A  ALA*     1.3    60.9    +      -       -      +
    224A  GLN*     3.2    16.2    -      -       +      +
    225A  LEU*     3.1    39.9    +      -       +      +
    226A  GLN*     2.9    39.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 223 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    222A  THR*     1.3    73.0    +      -       -      +
    224A  GLN*     1.3    62.2    +      -       -      +
    226A  GLN*     3.3    16.1    +      -       -      +
    227A  ALA*     3.0    24.0    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 224 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178A  ALA*     5.6     5.4    +      -       -      +
    181A  ILE*     3.8    36.9    -      -       +      +
    182A  TRP*     5.5     3.4    -      -       -      +
    185A  GLU*     4.6    14.0    +      -       -      +
    222A  THR*     3.2    12.0    -      -       +      +
    223A  ALA*     1.3    77.9    -      -       -      +
    225A  LEU*     1.3    57.6    +      -       +      +
    227A  ALA*     3.4     6.9    +      -       -      +
    228A  LEU*     2.9    26.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 225 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    176A  VAL*     4.3    23.6    -      -       +      -
    181A  ILE*     3.5    36.3    -      -       +      -
    219A  HIS*     3.5    33.2    -      -       +      +
    220A  HIS*     3.4    33.7    -      -       -      +
    221A  GLY      4.8     0.2    -      -       -      -
    222A  THR*     3.1    27.2    -      -       +      +
    224A  GLN*     1.3    73.4    -      -       +      +
    226A  GLN*     1.3    56.7    +      -       -      +
    228A  LEU*     3.3     4.6    +      -       +      +
    229A  ARG*     2.7    36.6    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 226 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    219A  HIS      4.7     2.2    -      -       -      -
    220A  HIS*     5.3     3.1    -      -       +      -
    221A  GLY*     5.0     6.9    -      -       -      +
    222A  THR      2.9    28.7    +      -       -      +
    223A  ALA*     3.5    15.8    -      -       -      +
    225A  LEU*     1.3    72.5    -      -       -      +
    227A  ALA*     1.3    67.0    +      -       -      +
    229A  ARG*     3.4     7.8    +      -       -      +
    230A  GLN*     3.1    24.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with ALA 227 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  GLU*     5.8     2.2    -      -       -      +
    223A  ALA      3.0    13.2    +      -       -      +
    224A  GLN*     3.6    10.3    -      -       -      +
    226A  GLN*     1.3    78.4    -      -       -      +
    228A  LEU*     1.3    62.7    +      -       -      +
    230A  GLN*     3.4     4.9    +      -       -      +
    231A  LYS*     3.3    31.9    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 228 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181A  ILE*     4.1    31.6    -      -       +      +
    184A  ALA*     4.2     3.4    -      -       +      -
    185A  GLU*     3.8    40.8    +      -       +      +
    188A  LEU*     4.1     9.0    -      -       +      -
    219A  HIS*     3.5    32.1    -      -       +      +
    224A  GLN      2.9    18.0    +      -       -      +
    225A  LEU*     3.7     6.3    -      -       +      +
    227A  ALA*     1.3    77.7    -      -       -      +
    229A  ARG*     1.3    62.6    +      -       -      +
    231A  LYS*     3.2     8.3    +      -       +      +
    232A  GLU*     3.0    45.7    +      -       +      +
----------------------------------------------------------
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Residues in contact with ARG 229 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216A  ILE*     3.5    38.1    +      -       +      +
    219A  HIS*     3.1    28.0    -      -       +      +
    220A  HIS*     4.2    19.9    +      -       -      +
    225A  LEU      2.7    13.3    +      -       -      +
    226A  GLN*     3.8     6.6    +      -       -      +
    228A  LEU*     1.3    73.0    -      -       -      +
    230A  GLN*     1.3    59.4    +      -       -      +
    232A  GLU*     3.1    10.7    +      -       -      +
    233A  VAL*     2.8    37.9    +      -       +      +
    264A  ILE*     3.9    32.9    -      -       -      +
    265A  PRO*     5.6     2.4    -      -       -      +
     80C  SER*     4.9     6.9    -      -       -      -
----------------------------------------------------------
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Residues in contact with GLN 230 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    226A  GLN      3.1    17.2    +      -       -      +
    227A  ALA*     3.8     6.3    -      -       -      +
    228A  LEU      3.3     0.2    -      -       -      -
    229A  ARG*     1.3    78.2    +      -       -      +
    231A  LYS*     1.3    57.5    +      -       +      +
    233A  VAL*     3.3     8.8    +      -       -      +
    234A  ASP*     2.9    60.3    +      -       -      +
    264A  ILE*     5.8     1.7    -      -       -      +
    266A  GLU*     3.0    31.9    +      -       -      +
----------------------------------------------------------
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Residues in contact with LYS 231 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185A  GLU*     2.7    33.8    +      -       -      +
    188A  LEU*     3.6    17.5    -      -       +      +
    189A  ASP*     3.0    31.0    +      -       -      -
    192A  THR*     5.4     0.5    +      -       -      -
    227A  ALA*     3.3    18.6    +      -       +      +
    228A  LEU*     3.2     9.7    +      -       -      +
    230A  GLN*     1.3    79.0    -      -       +      +
    232A  GLU*     1.3    60.2    +      -       -      +
    234A  ASP*     4.0     4.6    -      -       -      +
    235A  PHE*     3.1    25.5    +      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 232 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    184A  ALA*     4.2     1.2    -      -       -      +
    188A  LEU*     3.7    16.4    -      -       +      -
    212A  TYR*     3.3    36.1    -      -       +      -
    215A  LEU*     4.0     3.1    -      -       -      +
    216A  ILE*     3.6    23.3    -      -       +      +
    219A  HIS*     2.5    45.7    +      -       -      -
    228A  LEU*     3.0    23.9    +      -       +      +
    229A  ARG*     3.6    13.5    -      -       -      +
    231A  LYS*     1.3    73.2    -      -       -      +
    233A  VAL*     1.3    60.4    +      -       -      +
    235A  PHE*     3.4     4.3    +      -       -      +
    236A  CYS*     3.0    34.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with VAL 233 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    216A  ILE*     3.7    27.6    -      -       +      -
    229A  ARG*     2.8    26.5    +      -       +      +
    230A  GLN*     3.6    10.3    -      -       -      +
    231A  LYS      3.3     0.2    -      -       -      -
    232A  GLU*     1.3    77.9    -      -       -      +
    234A  ASP*     1.3    64.9    +      -       -      +
    236A  CYS*     3.9     0.9    -      -       -      +
    237A  ILE*     2.9    28.9    +      -       +      +
    264A  ILE*     4.1    15.0    -      -       +      -
    266A  GLU*     3.7    43.7    -      -       +      +
    267A  PHE*     3.9    17.0    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 234 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230A  GLN*     2.9    47.1    +      -       -      +
    231A  LYS*     4.1     5.0    -      -       -      +
    233A  VAL*     1.3    77.8    -      -       -      +
    235A  PHE*     1.3    61.8    +      -       -      +
    237A  ILE*     4.0     4.7    -      -       -      +
    238A  SER*     3.1    25.6    +      -       -      -
    266A  GLU*     4.1    10.0    -      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 235 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    188A  LEU*     3.7    22.4    -      -       +      -
    191A  LEU*     3.8    39.5    -      -       +      -
    192A  THR*     3.7    21.1    -      -       +      +
    195A  ARG*     5.2    12.3    -      -       +      -
    198A  VAL*     5.1     4.9    -      -       +      -
    208A  ALA*     4.1    23.6    -      -       +      -
    212A  TYR*     4.5    10.5    -      +       +      -
    231A  LYS      3.1    18.9    +      -       -      +
    232A  GLU      3.6     2.9    -      -       -      +
    234A  ASP*     1.3    77.4    -      -       -      +
    236A  CYS*     1.3    74.1    +      -       -      +
    238A  SER*     3.4     6.3    +      -       -      -
    239A  LEU*     3.3    53.8    +      -       +      +
----------------------------------------------------------
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Residues in contact with CYS 236 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209A  VAL*     4.1    15.0    -      -       +      +
    212A  TYR*     3.6    29.4    -      -       -      -
    213A  LEU*     3.7    37.2    -      -       +      -
    216A  ILE*     4.3     1.8    -      -       -      -
    232A  GLU      3.0    20.3    +      -       -      +
    233A  VAL      3.9     2.7    -      -       -      +
    235A  PHE*     1.3    80.5    -      -       -      +
    237A  ILE*     1.3    61.4    +      -       -      +
    239A  LEU*     3.3     4.8    +      -       -      +
    240A  LEU*     2.8    36.8    +      -       +      +
    267A  PHE*     4.3     4.7    -      -       +      -
----------------------------------------------------------
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Residues in contact with ILE 237 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    233A  VAL*     2.9    24.9    +      -       +      +
    234A  ASP*     4.0     6.1    -      -       -      +
    236A  CYS*     1.3    75.5    -      -       -      +
    238A  SER*     1.3    59.8    +      -       -      +
    240A  LEU*     4.3     3.1    -      -       -      -
    241A  ARG*     2.8    55.4    +      -       +      +
    266A  GLU*     3.8    37.9    -      -       +      +
    267A  PHE*     3.6    33.4    -      -       +      -
    270A  LEU*     4.1    14.6    -      -       +      -
----------------------------------------------------------
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Residues in contact with SER 238 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195A  ARG*     2.7    35.6    +      -       -      -
    234A  ASP      3.1    19.5    +      -       -      -
    235A  PHE*     3.7     6.5    -      -       -      -
    236A  CYS      3.2     0.4    -      -       -      -
    237A  ILE*     1.3    80.8    -      -       -      +
    239A  LEU*     1.3    56.7    +      -       -      +
    241A  ARG*     4.0     3.4    -      -       -      +
    242A  GLU*     2.9    32.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with LEU 239 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195A  ARG*     3.9    17.3    -      -       +      +
    198A  VAL*     4.7    10.3    -      -       +      -
    199A  LEU*     3.6    31.2    -      -       +      -
    205A  ILE*     4.3    24.2    -      -       +      +
    208A  ALA*     4.9     1.3    -      -       +      -
    209A  VAL*     3.8    25.1    -      -       +      -
    235A  PHE*     3.3    47.1    +      -       +      +
    236A  CYS      3.9     2.5    -      -       -      +
    238A  SER*     1.3    75.0    -      -       -      +
    240A  LEU*     1.3    59.7    +      -       -      +
    243A  ARG*     2.7    40.9    +      -       +      +
    247A  CYS*     4.0     2.4    -      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 240 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    209A  VAL*     4.1    11.9    -      -       +      -
    213A  LEU*     4.2    10.8    -      -       +      -
    236A  CYS*     2.8    26.0    +      -       +      +
    237A  ILE*     3.7     5.2    -      -       -      +
    239A  LEU*     1.3    78.2    -      -       -      +
    241A  ARG*     1.3    57.5    +      -       -      +
    244A  PHE*     3.1    53.0    -      -       +      +
    247A  CYS*     3.8    28.3    -      -       +      -
    254A  LEU*     4.6    11.9    -      -       +      -
    258A  LEU*     4.2     9.4    -      -       +      -
    267A  PHE*     4.1    14.8    -      -       +      -
    270A  LEU*     3.7    31.0    -      -       +      -
    281A  LEU*     4.5     1.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with ARG 241 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    237A  ILE*     2.8    39.6    +      -       +      +
    238A  SER*     4.2     3.6    -      -       -      +
    240A  LEU*     1.3    79.0    -      -       -      +
    242A  GLU*     1.3    63.1    +      -       -      +
    266A  GLU      4.8     1.4    +      -       -      -
    269A  LEU*     3.7    18.4    -      -       -      +
    270A  LEU*     3.5    42.0    -      -       +      +
    273A  ASP*     2.8    31.9    +      -       -      -
    280A  ALA*     6.4     0.4    -      -       -      +
    281A  LEU*     4.2    32.7    -      -       +      +
----------------------------------------------------------
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Residues in contact with GLU 242 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195A  ARG*     2.7    39.6    +      -       -      +
    199A  LEU*     3.8    18.8    -      -       -      +
    238A  SER*     2.9    19.2    +      -       -      +
    241A  ARG*     1.3    78.6    -      -       -      +
    243A  ARG*     1.3    80.9    +      -       +      +
    244A  PHE      3.8     1.1    +      -       -      -
    281A  LEU      6.0     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 243 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    199A  LEU*     3.2    58.3    +      -       +      +
    202A  SER*     5.8     0.2    +      -       -      -
    205A  ILE*     4.0    24.1    -      -       +      +
    239A  LEU*     2.7    22.2    +      -       +      +
    242A  GLU*     1.3    98.8    +      -       +      +
    244A  PHE*     1.3    63.8    +      -       -      +
    245A  MSE      3.3     3.1    -      -       -      -
    246A  GLU*     3.3    38.3    +      -       +      +
    247A  CYS*     3.2    21.5    +      -       -      -
----------------------------------------------------------
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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