Contacts of the helix formed by residues 185 - 194 (chain R) in PDB entry 1HI0


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 LYS 185 (chain R).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    180R  LEU*     2.9    37.6    +      -       +      +
    181R  MET      4.2     0.2    +      -       -      -
    183R  GLN*     3.2    38.3    +      -       +      +
    184R  GLY*     1.3    75.4    -      -       -      +
    186R  PHE*     1.3    63.5    +      -       -      +
    187R  ASP      3.4     2.7    -      -       -      -
    188R  ASP*     3.3    21.6    +      -       +      +
    189R  ALA*     3.1    20.4    +      -       -      +
----------------------------------------------------------
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Residues in contact with PHE 186 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    181R  MET*     3.5    51.1    -      -       +      -
    184R  GLY*     3.3    24.0    +      -       -      -
    185R  LYS*     1.3    73.1    -      -       -      +
    187R  ASP*     1.3    61.4    +      -       -      +
    189R  ALA*     3.0     7.1    +      -       -      +
    190R  TYR*     2.8    29.6    +      -       -      +
    195R  MET      4.6     2.2    -      -       -      +
    355R  LYS*     4.1    15.9    -      -       -      -
    358R  GLU*     5.8     0.2    -      -       -      -
    359R  THR*     3.8    17.3    -      -       +      -
    382R  PRO      4.0    10.5    -      -       -      +
    383R  SER      3.3    26.4    +      -       -      +
    384R  ASN*     4.3    13.9    -      -       -      -
    385R  PRO*     3.5    25.1    -      -       +      -
----------------------------------------------------------
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Residues in contact with ASP 187 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    185R  LYS      3.4     0.4    -      -       -      -
    186R  PHE*     1.3    75.0    -      -       -      +
    188R  ASP*     1.3    71.2    +      -       -      +
    190R  TYR*     3.2     8.2    +      -       -      +
    191R  GLN*     2.8    44.1    +      -       -      +
    382R  PRO*     4.3     4.5    -      -       -      +
    383R  SER*     3.2    40.3    +      -       -      -
----------------------------------------------------------
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Residues in contact with ASP 188 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    463P  ARG*     3.9    20.7    +      -       -      -
    180R  LEU*     4.1    18.7    -      -       +      +
    185R  LYS*     3.3    31.6    +      -       +      +
    186R  PHE      3.2     0.2    -      -       -      -
    187R  ASP*     1.3    80.4    -      -       -      +
    189R  ALA*     1.3    64.8    +      -       -      +
    191R  GLN*     4.2     8.4    +      -       -      +
    192R  LEU*     2.8    36.4    +      -       +      +
----------------------------------------------------------
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Residues in contact with ALA 189 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177R  ALA*     4.0    14.6    -      -       +      +
    180R  LEU*     4.0    13.4    -      -       +      +
    181R  MET*     3.9    27.1    -      -       +      -
    185R  LYS      3.1    10.2    +      -       -      +
    186R  PHE*     3.0     9.1    +      -       +      +
    188R  ASP*     1.3    78.5    -      -       -      +
    190R  TYR*     1.3    57.6    +      -       -      +
    193R  HIS*     2.9    34.7    +      -       -      +
    194R  GLN      3.6     0.7    +      -       -      -
    195R  MET*     3.7    12.7    +      -       -      +
----------------------------------------------------------
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Residues in contact with TYR 190 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16R  MET*     2.6    42.6    +      -       +      -
     17R  LEU*     3.2    15.7    -      -       +      -
    153R  ILE*     3.4    10.4    -      -       +      +
    154R  PRO*     3.3    22.1    -      -       +      +
    186R  PHE      2.8    15.2    +      -       -      +
    187R  ASP*     3.6    11.4    -      -       -      +
    189R  ALA*     1.3    74.0    -      -       -      +
    191R  GLN*     1.3    71.4    +      -       +      +
    194R  GLN*     2.6    50.4    +      -       +      +
    195R  MET      3.7    10.7    +      -       -      +
    196R  GLY*     3.7     8.7    -      -       -      -
    197R  GLY*     3.6    34.8    -      -       -      +
    276R  PRO*     5.7     0.2    -      -       +      -
    382R  PRO*     6.3     1.3    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLN 191 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420P  PRO*     4.1    29.2    -      -       +      +
    421P  HIS*     3.7    32.4    -      -       +      +
    424P  SER*     5.8     2.9    -      -       -      -
    463P  ARG*     4.2     4.8    -      -       -      +
     16R  MET*     4.5    24.9    -      -       +      +
    187R  ASP*     2.8    34.3    +      -       -      +
    188R  ASP*     3.9    15.6    +      -       -      +
    190R  TYR*     1.3    85.2    -      -       +      +
    192R  LEU*     1.3    66.8    +      -       +      +
    194R  GLN*     3.3    12.5    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 192 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    420P  PRO*     6.1     2.7    -      -       +      -
    421P  HIS*     6.0     4.7    -      -       +      +
    463P  ARG*     5.4    16.8    -      -       +      +
    470P  ARG*     5.9     0.7    +      -       -      -
    169R  ARG*     5.3     3.8    +      -       -      -
    176R  GLU*     4.2     8.5    -      -       -      +
    180R  LEU*     4.4    11.9    -      -       +      -
    188R  ASP*     2.8    26.8    +      -       +      +
    191R  GLN*     1.3    81.2    -      -       +      +
    193R  HIS*     1.3    94.3    +      -       +      +
    194R  GLN*     3.8     5.8    +      -       -      +
----------------------------------------------------------
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Residues in contact with HIS 193 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    169R  ARG*     4.7    10.6    +      -       +      +
    173R  LYS*     3.3    41.4    -      -       +      +
    176R  GLU*     3.1    30.9    +      -       -      +
    177R  ALA*     4.0    22.7    -      -       +      -
    180R  LEU*     4.3     5.1    -      -       +      +
    189R  ALA      2.9    13.2    +      -       -      +
    192R  LEU*     1.3   106.2    +      -       +      +
    194R  GLN*     1.3    81.7    +      -       -      +
    195R  MET*     3.0    20.7    +      -       +      +
    278R  ALA*     3.2    14.6    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLN 194 (chain R). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154R  PRO*     3.6    35.9    -      -       +      +
    155R  TYR*     3.5    31.0    +      -       +      +
    169R  ARG*     5.8     4.0    -      -       -      +
    190R  TYR*     2.6    34.6    +      -       +      +
    191R  GLN      3.3    20.6    +      -       -      -
    192R  LEU      3.8     4.1    +      -       -      +
    193R  HIS*     1.3    82.7    -      -       -      +
    195R  MET*     1.3    57.3    +      -       -      +
    196R  GLY      3.6     4.5    +      -       -      -
    276R  PRO*     4.3    12.5    -      -       -      +
    278R  ALA*     3.2    19.1    -      -       +      +
----------------------------------------------------------
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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