Contacts of the helix formed by residues 11 - 23 (chain Q) in PDB entry 2D2I


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 11 (chain Q).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193P  ALA*     6.3     0.4    -      -       -      -
      9Q  GLY      3.0     9.7    +      -       -      -
     10Q  PHE*     1.3    75.4    -      -       -      +
     12Q  ARG*     1.3    67.9    +      -       -      -
     13Q  ILE      3.4     2.2    -      -       -      -
     14Q  GLY      3.8     0.7    -      -       -      -
     15Q  ARG*     2.8    36.9    +      -       -      +
   5341Q  NAP      3.1    31.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 12 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191P  LEU*     4.4    17.4    -      -       +      +
    192P  ASP*     3.4    30.4    -      -       -      +
     11Q  GLY*     1.3    71.1    -      -       -      +
     13Q  ILE*     1.3    59.0    +      -       +      +
     15Q  ARG*     3.1    21.2    -      -       -      +
     16Q  ASN*     2.8    46.0    +      -       -      +
     50Q  ASP*     2.9    42.7    +      -       -      -
     52Q  VAL*     4.1    10.7    -      -       -      +
     53Q  LEU*     4.7     1.6    -      -       -      +
    186Q  LEU*     3.9     9.4    -      -       +      -
    319Q  GLU*     2.7    48.3    +      -       +      +
   5341Q  NAP      2.9    40.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 13 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12Q  ARG*     1.3    72.9    -      -       -      +
     14Q  GLY*     1.3    60.6    +      -       -      +
     17Q  PHE*     2.8    38.0    +      -       +      +
     96Q  ILE*     5.9     0.2    -      -       +      -
     98Q  SER*     4.4     2.7    -      -       -      -
    122Q  THR*     3.9    30.3    -      -       +      +
    319Q  GLU*     4.1    13.5    -      -       +      +
    322Q  TYR*     4.0    13.2    -      -       +      -
    323Q  SER*     3.8    20.0    -      -       -      +
    326Q  VAL*     4.8     3.8    -      -       +      -
   5341Q  NAP      3.0    73.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 14 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7Q  ILE*     4.1    11.1    -      -       -      +
      9Q  GLY      3.6    21.4    +      -       -      -
     10Q  PHE*     4.0     9.0    -      -       -      -
     11Q  GLY      3.3     6.4    +      -       -      -
     13Q  ILE*     1.3    79.3    -      -       -      +
     15Q  ARG*     1.3    55.6    +      -       -      +
     17Q  PHE*     3.5     7.9    -      -       -      +
     18Q  LEU*     3.1    25.5    +      -       -      +
     96Q  ILE*     5.6     1.1    -      -       -      -
     98Q  SER*     3.8    11.1    +      -       -      -
   5341Q  NAP      4.8     0.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 15 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192P  ASP*     3.1    36.8    +      -       -      +
    193P  ALA*     5.0     2.6    -      -       -      +
    194P  SER      5.5     0.6    -      -       -      +
     10Q  PHE*     2.9    59.2    +      -       +      +
     11Q  GLY*     2.8    37.5    +      -       -      +
     12Q  ARG*     3.1    26.1    -      -       -      +
     14Q  GLY*     1.3    69.0    -      -       -      +
     16Q  ASN*     1.3    66.7    +      -       -      +
     17Q  PHE      3.1     1.3    -      -       -      -
     18Q  LEU*     3.1     3.4    +      -       -      +
     19Q  ARG*     2.9    28.3    +      -       +      +
     46Q  LEU*     3.2    53.7    +      -       -      +
     47Q  LEU*     4.0     8.1    -      -       +      +
     50Q  ASP*     4.6     5.0    +      -       -      +
     53Q  LEU*     5.6     0.9    -      -       +      -
   5341Q  NAP      5.2     0.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 16 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     12Q  ARG*     2.8    46.0    +      -       -      +
     13Q  ILE*     4.3     0.4    -      -       -      -
     15Q  ARG*     1.3    72.7    -      -       -      +
     17Q  PHE*     1.3    52.4    +      -       -      +
     19Q  ARG*     3.2     6.5    +      -       -      +
     20Q  CYS*     2.7    41.2    +      -       -      -
     50Q  ASP*     5.0     0.4    +      -       -      -
     53Q  LEU*     3.6    25.3    -      -       -      +
    319Q  GLU*     3.5    32.2    +      -       -      +
    320Q  TRP*     3.6    24.1    +      -       +      -
    323Q  SER*     3.3    20.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 17 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      5Q  VAL*     4.8     2.9    -      -       +      -
      7Q  ILE*     3.6    30.7    -      -       +      -
     13Q  ILE*     2.8    25.5    +      -       +      +
     14Q  GLY*     3.5     4.0    -      -       -      +
     16Q  ASN*     1.3    69.9    -      -       -      +
     18Q  LEU*     1.3    71.3    +      -       -      +
     20Q  CYS*     3.1     4.7    +      -       -      +
     21Q  TRP*     2.9    27.4    +      -       +      +
     29Q  LEU*     4.6    15.7    -      -       +      -
     31Q  VAL*     4.2    16.4    -      -       +      -
     96Q  ILE*     3.7    31.0    -      -       +      -
    323Q  SER*     3.7    12.2    +      -       -      +
    326Q  VAL*     3.1    35.4    -      -       +      -
    327Q  VAL*     3.4    33.7    -      -       +      +
    330Q  ALA*     4.6     1.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 18 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      7Q  ILE*     4.1    14.1    -      -       +      -
     10Q  PHE*     3.6    27.4    -      -       +      -
     14Q  GLY      3.1    13.7    +      -       -      +
     15Q  ARG*     3.1     7.8    +      -       -      +
     17Q  PHE*     1.3    81.5    -      -       -      +
     19Q  ARG*     1.3    64.1    +      -       -      +
     21Q  TRP*     3.1    17.1    +      -       +      +
     22Q  PHE*     3.0    52.1    +      -       +      -
     31Q  VAL*     4.4     7.2    -      -       +      -
     34Q  ILE*     4.3     4.0    -      -       +      -
     47Q  LEU*     3.9    23.1    -      -       +      -
     67Q  ILE*     5.8     0.2    -      -       +      -
     74Q  MET*     4.1    24.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 19 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     15Q  ARG*     2.9    15.3    +      -       -      +
     16Q  ASN*     3.5     8.5    -      -       -      +
     18Q  LEU*     1.3    73.5    -      -       -      +
     20Q  CYS*     1.3    66.0    +      -       -      +
     22Q  PHE*     3.3     2.4    +      -       -      +
     23Q  GLY*     3.1    18.4    +      -       -      -
     47Q  LEU*     3.5    22.3    +      -       +      +
     48Q  GLU      3.8     1.2    +      -       -      -
     50Q  ASP*     3.1    22.4    +      -       -      +
     53Q  LEU*     3.5    32.4    +      -       +      +
     54Q  GLY      2.8    29.5    +      -       -      -
     55Q  ARG      3.8     3.8    +      -       -      -
     56Q  PHE*     3.4    68.0    -      -       +      +
    320Q  TRP*     4.0    16.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 20 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     16Q  ASN      2.7    27.6    +      -       -      +
     17Q  PHE      3.1     4.9    +      -       -      +
     19Q  ARG*     1.3    71.5    -      -       -      +
     21Q  TRP*     1.3    63.7    -      -       -      +
     23Q  GLY*     3.1    12.3    +      -       -      -
     24Q  ARG*     3.2    19.1    +      -       -      +
    320Q  TRP*     3.6    34.5    -      -       -      -
    323Q  SER*     3.7    20.4    -      -       -      -
    324Q  GLN*     3.4    34.9    +      -       -      +
    327Q  VAL*     3.9    10.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 21 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     17Q  PHE*     2.9    17.1    +      +       +      +
     18Q  LEU*     3.3    22.4    -      -       +      +
     20Q  CYS*     1.3    74.4    -      -       -      +
     22Q  PHE*     1.3    91.4    +      +       -      +
     24Q  ARG*     2.8    34.2    +      -       +      +
     27Q  THR*     2.8    38.1    +      -       +      +
     29Q  LEU*     3.4    33.4    -      -       +      +
     30Q  GLU*     3.7     7.4    -      -       -      -
     31Q  VAL*     3.6    47.3    -      -       +      -
     72Q  LYS*     3.4    33.2    -      -       +      -
     74Q  MET*     4.9     1.1    -      -       -      -
    327Q  VAL*     4.1    13.8    -      -       +      +
    331Q  GLU*     4.4     4.9    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 22 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18Q  LEU*     3.0    50.5    +      -       +      +
     19Q  ARG      3.9     6.3    -      -       -      +
     21Q  TRP*     1.3    90.7    -      +       -      +
     23Q  GLY*     1.3    60.7    +      -       -      +
     24Q  ARG      3.3     5.9    +      -       -      +
     56Q  PHE*     4.0    22.4    -      +       +      -
     69Q  VAL*     3.1    52.7    -      -       +      -
     70Q  ASN*     4.2    13.5    -      -       +      +
     72Q  LYS*     3.7    31.2    -      -       +      +
     74Q  MET*     4.1    10.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 23 (chain Q). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19Q  ARG      3.1     9.5    +      -       -      -
     20Q  CYS      3.1    11.0    +      -       -      -
     21Q  TRP      3.0     1.4    -      -       -      -
     22Q  PHE*     1.3    77.2    -      -       -      +
     24Q  ARG*     1.3    63.7    +      -       -      +
     25Q  GLN*     3.6     3.1    +      -       -      +
     56Q  PHE*     6.0     0.2    -      -       -      -
    320Q  TRP*     6.2     1.3    -      -       -      -
----------------------------------------------------------
 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