Contacts of the helix formed by residues 51 - 65 (chain A) in PDB entry 6FWF


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 51 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  TYR*     3.9    25.6    -      -       +      +
     37A  PRO      2.8    23.3    +      -       -      +
     38A  GLU*     3.1    35.5    +      -       +      +
     50A  ALA*     1.3    69.2    -      -       -      +
     52A  ASP*     1.3    58.0    +      -       -      +
     54A  ILE*     4.2     8.3    -      -       -      -
     55A  LEU*     2.8    64.3    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 52 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     38A  GLU      4.7     2.3    -      -       -      +
     50A  ALA*     4.1    13.8    -      -       +      +
     51A  LYS*     1.3    78.3    -      -       -      +
     53A  ASP*     1.3    59.8    +      -       -      +
     55A  LEU*     4.2     2.2    -      -       -      +
     56A  ALA*     2.8    39.7    +      -       -      +
    188A  LYS*     4.9     4.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 53 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49A  MET*     3.7     4.2    -      -       -      -
     50A  ALA*     2.8    36.9    +      -       -      +
     52A  ASP*     1.3    73.6    -      -       -      +
     54A  ILE*     1.3    59.1    +      -       -      +
     57A  GLY      2.8    23.2    +      -       -      -
    181A  PRO*     5.7     2.3    -      -       -      +
    183A  GLN*     3.7    25.9    -      -       -      +
    188A  LYS*     3.1    54.2    +      -       +      +
    191A  ASP*     3.8    21.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 54 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  TYR*     3.4    29.2    -      -       +      -
     37A  PRO*     3.8    19.3    -      -       +      +
     40A  VAL*     5.2     0.4    -      -       +      -
     49A  MET*     3.8    29.4    -      -       +      -
     50A  ALA      2.8    28.5    +      -       -      +
     51A  LYS*     3.9     4.7    -      -       -      +
     53A  ASP*     1.3    73.4    -      -       -      +
     55A  LEU*     1.3    56.5    +      -       -      +
     57A  GLY      3.6     0.2    -      -       -      -
     58A  GLN*     2.8    27.1    +      -       -      +
    191A  ASP      4.3     2.5    -      -       -      +
    192A  PHE*     3.5    18.8    -      -       +      +
    195A  TRP*     3.5    43.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 55 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  TYR*     3.3    22.9    -      -       +      -
     51A  LYS*     2.8    49.2    +      -       +      +
     52A  ASP*     4.2     2.7    -      -       -      +
     54A  ILE*     1.3    72.0    -      -       -      +
     56A  ALA*     1.3    58.2    +      -       -      +
     58A  GLN*     3.2    25.9    +      -       -      +
     59A  SER*     2.8    27.4    +      -       -      -
    474A  GLU      4.5     1.6    -      -       -      +
    475A  LYS*     3.3    45.9    -      -       +      +
    476A  SER      3.8     7.4    -      -       -      +
    477A  PRO*     4.8     1.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 56 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52A  ASP      2.8    22.8    +      -       -      +
     55A  LEU*     1.3    72.3    -      -       -      +
     57A  GLY*     1.3    54.6    +      -       -      +
     59A  SER*     2.7    23.3    +      -       -      +
     60A  ALA*     2.8    22.1    +      -       -      +
    188A  LYS*     3.5    31.0    -      -       +      +
    475A  LYS*     4.1    10.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 57 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53A  ASP      2.8    19.3    +      -       -      -
     54A  ILE      3.6     1.6    -      -       -      -
     56A  ALA*     1.3    74.8    -      -       -      +
     58A  GLN*     1.3    56.6    +      -       -      +
     60A  ALA*     4.0     4.2    -      -       -      +
     61A  TRP*     2.8    32.0    +      -       -      +
    188A  LYS*     3.5    22.8    -      -       -      +
    189A  LEU*     3.8     8.8    -      -       -      +
    192A  PHE*     3.7     9.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 58 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     36A  TYR*     2.5    33.1    +      -       -      -
     54A  ILE      2.8    16.5    +      -       -      +
     55A  LEU*     3.2    13.0    -      -       -      +
     57A  GLY*     1.3    73.8    -      -       -      +
     59A  SER*     1.3    59.2    +      -       -      +
     61A  TRP*     3.2     8.1    +      -       +      +
     62A  GLN*     2.8    47.9    +      -       -      +
    192A  PHE*     3.9    19.7    -      -       +      -
    474A  GLU      3.5     7.9    +      -       -      +
    476A  SER      2.6    26.6    +      -       -      +
    478A  ILE*     4.1     7.2    -      -       +      +
    481A  MET*     3.0    29.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 59 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55A  LEU      2.8    17.2    +      -       -      -
     56A  ALA*     2.7    20.4    +      -       -      +
     58A  GLN*     1.3    74.1    -      -       -      +
     60A  ALA*     1.3    51.3    +      -       -      +
     62A  GLN*     3.3    14.4    +      -       -      +
     63A  THR*     2.8    36.6    +      -       -      -
    474A  GLU*     3.8    21.0    +      -       -      +
    475A  LYS*     3.3    30.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 60 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56A  ALA      2.8    21.8    +      -       -      +
     57A  GLY*     4.0     8.3    -      -       -      +
     59A  SER*     1.3    71.9    +      -       -      +
     61A  TRP*     1.3    57.4    +      -       -      +
     62A  GLN      3.2     0.2    -      -       -      -
     63A  THR*     3.4     9.4    -      -       +      -
     64A  THR*     2.8    43.4    +      -       +      +
    185A  ALA      5.4     5.8    -      -       -      +
    189A  LEU*     5.1    10.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 61 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57A  GLY      2.8    21.2    +      -       -      +
     58A  GLN*     3.2     7.6    -      -       +      +
     60A  ALA*     1.3    75.1    -      -       -      +
     62A  GLN*     1.3    66.3    +      -       +      +
     64A  THR*     2.6    22.5    +      -       -      -
     65A  GLY*     2.8    16.6    +      -       -      -
     66A  GLY*     3.3    32.4    +      -       -      -
     67A  MET*     3.3    36.7    -      -       +      +
     70A  GLY      3.2    22.7    -      -       -      -
     72A  VAL*     3.6    33.1    -      -       +      +
     83A  TRP*     3.7    19.3    -      +       -      -
    189A  LEU*     4.3     8.2    -      -       +      +
    192A  PHE*     3.5    31.4    -      +       +      -
    193A  PHE*     4.0    20.0    -      +       -      -
    409A  GLY*     4.8     1.2    +      -       -      +
    410A  TYR*     5.9     0.6    -      +       -      -
    478A  ILE*     4.7     6.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 62 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58A  GLN*     2.8    35.5    +      -       -      +
     59A  SER*     3.5     6.2    -      -       -      +
     60A  ALA      3.2     0.2    -      -       -      -
     61A  TRP*     1.3    80.8    -      -       +      +
     63A  THR*     1.3    62.3    +      -       -      +
     65A  GLY      3.8     2.4    +      -       -      -
    402A  ASN*     5.3     1.3    -      -       -      -
    403A  PHE*     5.2     1.6    -      -       +      -
    407A  HIS      2.9    23.6    -      -       -      +
    408A  GLN      3.4    17.3    -      -       -      +
    409A  GLY*     3.7    11.6    -      -       -      -
    410A  TYR*     2.9    31.5    +      -       +      +
    474A  GLU*     2.9    44.7    +      -       +      +
    478A  ILE*     4.7     0.9    -      -       -      +
    481A  MET*     3.1    20.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 63 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59A  SER*     2.8    21.8    +      -       -      -
     60A  ALA*     3.4    13.3    -      -       +      +
     62A  GLN*     1.3    76.6    -      -       -      +
     64A  THR*     1.3    67.4    +      -       +      +
     65A  GLY*     3.2     0.7    +      -       -      -
    392A  ALA*     3.7    23.6    -      -       -      +
    395A  HIS*     3.8    30.5    -      -       +      +
    399A  PRO*     4.5     3.7    +      -       +      +
    402A  ASN*     2.7    46.6    +      -       -      +
    407A  HIS*     4.6     3.3    -      -       -      +
    474A  GLU*     4.8     1.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 64 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60A  ALA*     2.8    25.4    +      -       +      +
     61A  TRP*     2.6    29.3    +      -       -      -
     63A  THR*     1.3    77.1    -      -       +      +
     65A  GLY*     1.3    58.8    +      -       -      +
     66A  GLY*     3.4     9.7    +      -       -      -
     69A  VAL*     5.9     0.5    -      -       -      +
    189A  LEU*     5.2    14.3    -      -       +      +
    329A  ALA*     5.4     0.3    -      -       -      +
    392A  ALA      5.2     2.0    -      -       -      -
    393A  LEU*     3.1    23.8    -      -       -      +
    395A  HIS*     5.7     4.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 65 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     61A  TRP      2.8    10.0    +      -       -      -
     62A  GLN      3.8     2.7    -      -       -      -
     63A  THR      3.2     2.6    -      -       -      -
     64A  THR*     1.3    78.9    -      -       -      +
     66A  GLY*     1.3    52.9    +      -       -      +
     67A  MET      3.0     5.8    -      -       -      -
     68A  GLU*     2.8    35.5    +      -       -      +
     69A  VAL*     4.1     2.9    -      -       -      +
    393A  LEU*     3.9     5.3    -      -       -      +
    407A  HIS*     3.1    30.6    -      -       -      -
    409A  GLY*     4.3     2.0    -      -       -      -
----------------------------------------------------------
 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