Contacts of the helix formed by residues 69 - 82 (chain F) in PDB entry 1Z6Z


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 69 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     66F  ASP*     3.3    22.7    +      -       +      +
     67F  LEU      3.3     1.1    -      -       -      +
     68F  GLY*     1.3    80.0    -      -       -      +
     70F  GLU*     1.3    67.5    +      -       -      +
     71F  ALA*     4.4     7.9    -      -       +      +
     72F  GLY      4.4     3.1    -      -       -      +
     73F  LEU*     3.1    23.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 70 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114E  SER*     2.6    37.5    +      -       -      -
    115E  THR*     3.9    21.6    -      -       +      +
    118E  ASN*     3.5    17.5    +      -       -      +
     69F  ALA*     1.3    73.1    -      -       -      +
     71F  ALA*     1.3    58.1    +      -       -      +
     73F  LEU*     3.1     7.6    +      -       -      +
     74F  GLN*     2.9    51.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 71 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     69F  ALA*     3.4     4.8    -      -       +      +
     70F  GLU*     1.3    78.3    -      -       -      +
     72F  GLY*     1.3    62.2    +      -       -      +
     74F  GLN*     3.5     6.6    +      -       -      +
     75F  GLN*     3.1    34.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 72 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65F  ALA*     3.3    20.7    -      -       -      +
     66F  ASP*     3.1    30.9    +      -       -      -
     67F  LEU*     4.3     0.8    -      -       -      +
     69F  ALA*     3.5     6.1    +      -       -      +
     70F  GLU      3.3     0.4    -      -       -      -
     71F  ALA*     1.3    77.6    -      -       -      +
     73F  LEU*     1.3    62.5    +      -       -      +
     75F  GLN*     3.3    20.7    +      -       -      +
     76F  LEU*     3.3     4.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 73 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    114E  SER*     3.7    31.2    -      -       -      +
     66F  ASP      3.7     1.6    +      -       -      -
     67F  LEU*     4.3    20.9    -      -       +      +
     69F  ALA      3.1    15.9    +      -       -      +
     70F  GLU*     3.1     8.8    +      -       -      +
     72F  GLY*     1.3    76.4    -      -       -      +
     74F  GLN*     1.3    62.6    +      -       -      +
     76F  LEU*     3.1     4.9    +      -       +      +
     77F  LEU*     2.9    51.1    +      -       +      +
    122F  ALA      6.0     0.2    -      -       -      +
    126F  THR*     4.8     3.4    -      -       +      -
    127F  SER*     3.9    41.3    -      -       -      +
    130F  CYS*     4.4     9.6    -      -       +      -
    131F  LEU*     5.0     4.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 74 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112E  SER      5.4     2.2    +      -       -      -
    114E  SER*     3.8    10.7    +      -       -      -
     70F  GLU*     2.9    41.2    +      -       +      +
     71F  ALA*     4.0     6.7    -      -       -      +
     73F  LEU*     1.3    75.1    -      -       -      +
     75F  GLN*     1.3    56.8    +      -       -      +
     77F  LEU*     3.8    28.1    -      -       -      +
     78F  GLY*     2.7    31.7    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 75 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63F  VAL*     4.0     8.4    -      -       +      +
     64F  PRO      3.7    18.2    -      -       -      +
     65F  ALA*     4.0     6.5    -      -       +      +
     71F  ALA*     3.1    21.3    +      -       -      +
     72F  GLY*     3.3    19.8    -      -       -      +
     73F  LEU      3.2     0.2    -      -       -      -
     74F  GLN*     1.3    77.2    -      -       -      +
     76F  LEU*     1.3    56.7    +      -       -      +
     78F  GLY*     3.9     0.7    -      -       -      -
     79F  ALA*     3.1    27.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 76 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8F  LEU*     4.7     8.5    -      -       +      -
     10F  THR*     4.2     9.0    -      -       +      -
     35F  VAL*     4.4    11.7    -      -       +      -
     37F  SER*     3.8    16.8    -      -       -      +
     63F  VAL*     3.8    34.7    -      -       +      +
     65F  ALA*     4.8     0.9    -      -       +      -
     67F  LEU*     3.7    26.0    -      -       +      -
     72F  GLY      3.3     6.8    +      -       -      +
     73F  LEU*     3.1     9.0    +      -       +      +
     75F  GLN*     1.3    77.8    -      -       -      +
     77F  LEU*     1.3    64.5    +      -       -      +
     79F  ALA*     3.2    13.3    +      -       +      +
     80F  LEU*     3.4    13.3    +      -       +      +
    131F  LEU*     3.8    36.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 77 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    112E  SER*     4.8    10.8    -      -       -      +
    114E  SER*     6.1     0.2    -      -       -      -
     73F  LEU*     2.9    33.8    +      -       +      +
     74F  GLN*     3.8    35.4    -      -       -      +
     76F  LEU*     1.3    76.5    -      -       +      +
     78F  GLY*     1.3    62.3    +      -       -      +
     80F  LEU*     3.3    27.2    -      -       +      +
     81F  ARG*     4.0     7.4    +      -       -      +
    130F  CYS*     4.0    17.0    -      -       +      +
    131F  LEU*     4.1    15.7    -      -       +      -
    134F  SER*     3.2    29.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 78 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     74F  GLN      2.7    23.2    +      -       -      -
     75F  GLN      3.9     1.3    -      -       -      -
     77F  LEU*     1.3    71.0    -      -       -      +
     79F  ALA*     1.3    63.3    +      -       -      +
     80F  LEU      3.2     1.0    +      -       -      -
     81F  ARG*     3.3    23.2    +      -       -      +
     82F  GLU*     4.0     4.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 79 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     35F  VAL*     5.8     1.6    -      -       +      -
     61F  VAL*     5.3     7.4    -      -       +      +
     63F  VAL*     3.8    27.6    -      -       +      -
     75F  GLN      3.1    14.5    +      -       -      +
     76F  LEU*     3.2    11.4    +      -       +      +
     78F  GLY*     1.3    75.1    -      -       -      +
     80F  LEU*     1.3    61.3    +      -       -      +
     82F  GLU*     3.6     5.2    +      -       -      +
     83F  LEU*     3.2    22.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 80 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      8F  LEU*     4.0    22.0    -      -       +      -
     35F  VAL*     6.3     0.9    -      -       +      -
     76F  LEU*     3.4     7.2    +      -       +      +
     77F  LEU*     3.3    25.5    +      -       +      +
     78F  GLY      3.1     0.4    -      -       -      -
     79F  ALA*     1.3    77.7    -      -       -      +
     81F  ARG*     1.3    65.4    +      -       +      +
     82F  GLU      3.1     1.4    +      -       -      -
     83F  LEU*     3.2    21.4    +      -       +      +
    131F  LEU*     4.8     4.3    -      -       +      +
    134F  SER*     3.8    28.0    -      -       -      +
    135F  VAL*     3.6    37.2    -      -       +      +
    138F  ALA*     5.1    10.0    -      -       +      +
    139F  PHE*     4.6    21.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 81 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81D  ARG      4.0    10.0    -      -       -      +
     82D  GLU*     3.5    27.5    -      -       -      +
     77F  LEU      4.3     8.1    -      -       -      +
     78F  GLY*     3.3    14.8    +      -       -      +
     80F  LEU*     1.3    76.4    -      -       +      +
     82F  GLU*     1.3    58.7    +      -       +      +
     83F  LEU      4.1     2.3    +      -       -      +
    138F  ALA*     6.3     1.1    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 82 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     81D  ARG      5.1     3.4    -      -       -      +
     83D  LEU      3.9    11.4    -      -       -      +
     84D  PRO*     4.0     1.3    -      -       -      -
     85D  ARG*     2.9    59.9    +      -       +      +
     78F  GLY      4.0     6.1    +      -       -      +
     79F  ALA*     3.6     7.8    +      -       -      +
     80F  LEU      3.1     0.6    -      -       -      -
     81F  ARG*     1.3    78.1    -      -       +      +
     83F  LEU*     1.3    63.0    +      -       -      +
     84F  PRO*     3.8     1.6    -      -       -      +
----------------------------------------------------------
 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