Contacts of the helix formed by residues 181 - 195 (chain 0) in PDB entry 1O1F


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 ALA 181 (chain 0).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1550  SER*     4.5     1.6    -      -       -      +
    1560  GLY      3.3    14.8    -      -       -      +
    1570  ASP      3.4    17.7    -      -       -      +
    1580  GLY      3.7    14.1    +      -       -      -
    1590  VAL      3.8     9.9    -      -       -      +
    1600  THR*     4.3     2.9    -      -       -      +
    1800  LEU*     1.3    77.5    -      -       -      +
    1820  GLY*     1.3    60.1    +      -       -      +
    1830  ARG      3.2     2.9    +      -       -      -
    1840  ASP*     3.2    10.8    +      -       -      +
    1850  LEU*     3.0    33.7    +      -       -      +
    3030  THR*     4.2     7.0    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 182 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1560  GLY      3.0    11.2    +      -       -      -
    1570  ASP*     4.4     5.2    -      -       -      -
    1810  ALA*     1.3    76.3    -      -       -      +
    1830  ARG*     1.3    54.6    +      -       -      +
    1850  LEU*     3.5     7.8    -      -       -      +
    1860  THR*     3.0    18.2    +      -       -      -
    2130  LYS*     2.8    30.8    +      -       -      -
    3030  THR*     3.1    21.2    +      -       -      -
    3060  TYR*     4.6     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 183 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     140  SER*     2.8    36.0    +      -       -      -
     690  TYR*     3.5    29.6    +      -       -      +
     710  ILE      4.8     5.3    +      -       -      -
     720  GLU*     4.6    14.5    +      -       -      +
     730  HIS*     5.2     7.7    -      -       -      +
    1570  ASP*     2.9    47.7    +      -       -      +
    1580  GLY*     4.4    13.9    -      -       -      -
    1810  ALA      3.2     0.4    +      -       -      -
    1820  GLY*     1.3    71.4    -      -       -      +
    1840  ASP*     1.3    69.6    -      -       -      +
    1860  THR*     3.3    14.1    +      -       -      -
    1870  ASP*     3.3    24.7    +      -       -      +
    2060  ARG*     6.1     2.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 184 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     730  HIS*     5.4     3.1    -      -       -      -
    1570  ASP      4.5     0.5    -      -       -      +
    1580  GLY*     4.7     5.0    -      -       -      +
    1790  ASP      3.9    12.1    -      -       -      +
    1800  LEU*     3.8    11.2    -      -       +      +
    1810  ALA*     3.2    28.4    +      -       -      +
    1830  ARG*     1.3    80.7    -      -       -      +
    1850  LEU*     1.3    61.4    +      -       +      +
    1870  ASP*     3.2     9.1    +      -       -      +
    1880  TYR*     3.1    27.7    +      -       -      +
    2670  ILE*     5.0    13.0    -      -       +      +
    2690  MET*     5.6     0.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 185 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1800  LEU*     3.9    24.5    -      -       +      -
    1810  ALA      3.0    17.3    +      -       -      +
    1820  GLY      3.5     7.0    -      -       -      +
    1840  ASP*     1.3    78.2    -      -       +      +
    1860  THR*     1.3    62.1    +      -       -      +
    1880  TYR*     3.9     5.6    -      -       +      +
    1890  LEU*     3.3     8.7    +      -       -      +
    2130  LYS*     4.1     3.6    -      -       +      -
    2570  CYS*     3.2    38.6    -      -       -      +
    2580  PRO*     5.1     0.2    -      -       +      -
    2600  THR*     4.3    19.7    -      -       +      -
    2610  LEU*     4.0    11.2    -      -       +      -
    3030  THR*     3.8    18.2    -      -       +      -
    3060  TYR*     3.0    40.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 186 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1820  GLY      3.0     8.7    +      -       -      -
    1830  ARG*     3.3     8.1    +      -       -      -
    1850  LEU*     1.3    75.0    -      -       -      +
    1870  ASP*     1.3    67.1    +      -       -      +
    1890  LEU*     3.4     5.2    +      -       -      +
    1900  MET*     3.1    25.3    +      -       -      +
    2060  ARG*     4.6    10.1    -      -       -      +
    2090  VAL*     3.6    27.0    -      -       +      +
    2100  ARG*     3.7    25.8    -      -       +      +
    2130  LYS*     2.7    37.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 187 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1830  ARG*     3.3    18.8    +      -       -      +
    1840  ASP*     3.2    11.0    +      -       -      +
    1860  THR*     1.3    79.6    -      -       -      +
    1880  TYR*     1.3    64.2    +      -       -      +
    1900  MET*     3.1    20.0    -      -       -      +
    1910  LYS*     3.3     9.5    +      -       -      +
    2060  ARG*     3.4    35.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 188 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1840  ASP      3.1    15.5    +      -       -      +
    1850  LEU*     4.1     5.6    -      -       -      +
    1860  THR      3.3     0.2    -      -       -      -
    1870  ASP*     1.3    76.1    -      -       -      +
    1890  LEU*     1.3    66.3    +      -       -      +
    1910  LYS*     3.2    40.6    +      -       +      +
    1920  ILE*     3.0    44.3    +      -       +      +
    2560  ARG*     3.3    21.8    +      -       -      +
    2570  CYS*     3.9    11.0    -      -       +      -
    2600  THR*     3.2    24.0    -      -       +      -
    2660  PHE*     3.1    39.8    -      +       -      +
    2670  ILE*     3.5    24.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 189 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1850  LEU      3.3    13.3    +      -       -      +
    1860  THR*     3.7     6.7    -      -       -      +
    1880  TYR*     1.3    77.9    -      -       -      +
    1900  MET*     1.3    55.2    +      -       -      +
    1920  ILE*     3.0    26.2    +      -       +      +
    1930  LEU*     2.8    52.9    +      -       +      +
    2090  VAL*     3.5    33.2    -      -       +      +
    2120  ILE*     3.7    12.1    -      -       +      -
    2130  LYS*     3.5    28.3    -      -       +      +
    2170  CYS*     4.6     7.4    -      -       -      -
    2500  ILE*     5.5     2.2    -      -       +      -
    2530  GLU*     4.6    16.4    -      -       +      +
    2540  ARG      5.3     0.7    -      -       -      +
    2570  CYS*     3.8     8.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 190 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1860  THR      3.1     9.6    +      -       -      +
    1870  ASP*     3.1    17.7    -      -       -      +
    1890  LEU*     1.3    78.6    -      -       -      +
    1910  LYS*     1.3    58.1    +      -       -      +
    1930  LEU*     3.3     3.1    +      -       -      +
    1940  THR*     2.9    37.7    +      -       +      +
    2000  PHE*     3.7    30.0    -      -       +      +
    2060  ARG*     3.7    44.2    -      -       +      +
    2090  VAL*     3.2    35.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 191 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1870  ASP      3.3     5.3    +      -       -      +
    1880  TYR*     3.2    48.4    +      -       +      +
    1900  MET*     1.3    78.4    -      -       -      +
    1920  ILE*     1.3    65.3    +      -       -      +
    1930  LEU      2.8     7.3    +      -       -      -
    1940  THR*     2.9    10.7    +      -       -      -
    1950  GLU*     2.8    55.6    +      -       +      +
    2660  PHE      5.0     3.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 192 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1880  TYR*     3.0    49.5    +      -       +      +
    1890  LEU*     3.0    23.1    +      -       +      +
    1910  LYS*     1.3    90.0    -      -       -      +
    1930  LEU*     1.3    54.9    +      -       -      +
    1950  GLU*     3.5    25.3    -      -       -      +
    1960  ARG*     3.2    21.1    +      -       -      +
    2530  GLU*     3.6    40.0    -      -       +      +
    2560  ARG*     3.6    32.2    +      -       +      +
    2570  CYS*     4.0     3.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 193 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1890  LEU*     2.8    35.9    +      -       +      +
    1900  MET      3.6     4.0    -      -       -      +
    1910  LYS      2.8     0.8    +      -       -      -
    1920  ILE*     1.3    78.8    -      -       -      +
    1940  THR*     1.3    63.3    +      -       -      +
    1950  GLU      3.2     1.1    -      -       -      -
    1960  ARG*     3.3     7.2    +      -       +      +
    1980  TYR*     2.8    39.7    -      -       +      +
    2000  PHE*     3.6    27.4    -      -       +      -
    2090  VAL*     4.1    10.5    -      -       +      -
    2120  ILE*     4.2    17.7    -      -       +      -
    2480  ILE*     5.2     0.2    -      -       +      -
    2490  THR      4.5     1.1    -      -       -      +
    2500  ILE*     3.3    33.4    -      -       +      -
    2530  GLU*     4.1    13.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 194 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1900  MET*     2.9    27.6    +      -       +      +
    1910  LYS*     3.0    14.4    +      -       -      -
    1930  LEU*     1.3    76.1    -      -       -      +
    1950  GLU*     1.3    59.6    +      -       -      +
    1970  GLY*     2.9     9.4    +      -       -      -
    1980  TYR      2.9    38.4    +      -       -      +
    1990  SER*     4.9     0.2    -      -       -      -
    2000  PHE*     3.5    25.8    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 195 (chain 0). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    1910  LYS*     2.8    45.0    +      -       +      +
    1920  ILE*     3.5    23.4    -      -       -      +
    1940  THR*     1.3    76.7    +      -       -      +
    1960  ARG*     1.3    56.2    +      -       -      +
    1970  GLY*     3.0     8.5    +      -       -      -
    2560  ARG*     3.7    15.3    +      -       -      +
----------------------------------------------------------
 Back to top of page


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