Contacts of the helix formed by residues 58 - 70 (chain W) in PDB entry 1S72


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 SER 58 (chain W).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57W  PRO*     1.3    75.8    -      -       -      +
     59W  GLN*     1.3    66.4    +      -       -      +
     60W  GLU*     3.8     9.6    +      -       -      +
     61W  THR*     3.0    16.3    +      -       -      -
     62W  LEU*     3.0    22.3    +      -       -      +
    101W  LEU*     4.2     1.1    -      -       -      -
    143W  THR*     3.7    12.0    -      -       -      +
    147W  ASP*     2.5    31.1    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 59 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58W  SER*     1.3    72.3    -      -       -      +
     60W  GLU*     1.3    67.0    +      -       +      +
     62W  LEU*     3.4     2.8    +      -       -      +
     63W  GLU*     3.1    46.5    +      -       -      +
     94W  SER*     3.2     9.5    +      -       -      -
     97W  ALA*     3.2     8.0    -      -       -      +
     98W  PHE*     3.1    53.5    -      -       -      +
    101W  LEU*     3.7    18.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 60 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58W  SER*     3.2     8.5    -      -       -      +
     59W  GLN*     1.3    81.4    -      -       +      +
     61W  THR*     1.3    65.4    +      -       -      +
     63W  GLU*     2.8    22.7    +      -       -      +
     64W  THR*     2.9    17.8    +      -       -      +
    151W  GLU*     5.7     1.1    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 61 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57W  PRO*     4.5     0.4    -      -       +      -
     58W  SER*     3.0    11.6    +      -       -      -
     60W  GLU*     1.3    78.6    -      -       -      +
     62W  LEU*     1.3    64.5    +      -       -      +
     64W  THR*     3.1     9.2    +      -       -      -
     65W  VAL*     3.0    22.7    +      -       +      +
    147W  ASP*     2.8    32.1    +      -       -      +
    150W  LEU*     3.7    42.2    -      -       +      -
    151W  GLU*     2.6    32.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 62 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
      1W  MET*     3.7    26.0    -      -       +      -
     34W  LEU*     4.1    26.0    -      -       +      -
     57W  PRO*     4.6    11.6    -      -       +      +
     58W  SER      3.0    16.7    +      -       -      +
     59W  GLN      3.7     4.9    -      -       -      +
     61W  THR*     1.3    78.1    -      -       -      +
     63W  GLU*     1.3    52.4    +      -       -      +
     65W  VAL*     3.7     4.7    -      -       +      +
     66W  LEU*     2.7    58.1    +      -       +      +
     97W  ALA*     3.7    20.4    -      -       +      +
    100W  LEU*     4.2     6.1    -      -       +      -
    101W  LEU*     3.7    18.6    -      -       +      -
    116W  LEU*     4.9     6.5    -      -       +      -
    150W  LEU*     5.9     2.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 63 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59W  GLN*     3.1    43.8    +      -       -      +
     60W  GLU*     2.8    14.6    +      -       -      +
     62W  LEU*     1.3    75.7    -      -       -      +
     64W  THR*     1.3    62.2    +      -       -      +
     66W  LEU*     3.8     1.0    -      -       -      +
     67W  ALA*     2.9    26.5    +      -       -      +
     93W  ILE*     3.9    17.1    -      -       +      +
     94W  SER*     2.7    36.1    +      -       -      -
     97W  ALA*     3.7    15.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 64 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60W  GLU*     2.9    14.1    +      -       -      +
     61W  THR*     3.1    10.0    +      -       -      -
     63W  GLU*     1.3    75.9    -      -       -      +
     65W  VAL*     1.3    59.6    +      -       +      +
     67W  ALA*     3.8     3.9    -      -       -      +
     68W  THR*     2.9    31.2    +      -       -      +
    151W  GLU*     5.1    12.8    +      -       +      +
    154W  ARG*     4.2    27.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 65 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     32W  CYS*     5.8     0.2    -      -       -      -
     61W  THR*     3.0    19.7    +      -       +      +
     62W  LEU*     3.9     6.1    -      -       +      +
     64W  THR*     1.3    76.2    -      -       +      +
     66W  LEU*     1.3    57.9    +      -       -      +
     68W  THR*     3.3     9.2    -      -       +      -
     69W  ARG*     2.6    33.5    +      -       +      +
     70W  ALA      3.8     0.5    +      -       -      -
    116W  LEU*     3.6    28.9    -      -       +      +
    118W  LEU*     4.0    21.3    -      -       +      -
    150W  LEU*     3.8    44.6    -      -       +      +
    151W  GLU*     5.3     0.9    -      -       +      -
    154W  ARG*     4.8     5.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 66 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34W  LEU*     4.8     0.7    -      -       +      -
     62W  LEU*     2.7    38.5    +      -       +      +
     63W  GLU      3.8     3.4    -      -       -      +
     65W  VAL*     1.3    72.1    -      -       -      +
     67W  ALA*     1.3    65.2    +      -       -      +
     70W  ALA*     2.8    41.3    +      -       +      +
     79W  VAL*     4.1     4.8    -      -       +      +
     93W  ILE*     4.0    15.0    -      -       +      -
     96W  LEU*     4.4    11.2    -      -       +      -
     97W  ALA*     3.9    26.0    -      -       +      +
    100W  LEU*     3.7    24.5    -      -       +      -
    107W  LEU*     4.1    26.0    -      -       +      -
    116W  LEU*     4.3    11.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 67 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     63W  GLU      2.9    18.4    +      -       -      +
     64W  THR*     3.8     4.5    -      -       -      +
     66W  LEU*     1.3    80.7    -      -       -      +
     68W  THR*     1.3    61.8    +      -       -      +
     70W  ALA      4.4     2.1    +      -       -      +
     78W  ASP*     5.9     1.0    -      -       -      +
     79W  VAL      3.7    15.8    +      -       -      +
     80W  ASP*     5.6     0.7    -      -       -      +
     93W  ILE*     3.4    28.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 68 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    5670    U      5.1     1.4    +      -       -      -
     64W  THR*     2.9    27.5    +      -       -      +
     65W  VAL*     3.2    15.0    -      -       -      +
     67W  ALA*     1.3    79.5    -      -       -      +
     69W  ARG*     1.3    76.2    +      -       +      +
     70W  ALA      5.3     0.7    -      -       -      +
    154W  ARG*     3.1    45.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 69 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    5660    A      3.3    12.6    +      -       -      -
    5670    U      2.8    28.9    +      -       -      -
   12630    C      3.0    41.4    +      -       -      -
   12640    U      4.3     6.3    +      -       -      -
     65W  VAL      2.6    18.0    +      -       -      +
     68W  THR*     1.3    85.6    +      -       +      +
     70W  ALA*     1.3    61.9    +      -       -      +
     71W  GLU*     3.9     8.3    +      -       -      +
    115W  THR      4.4     1.0    -      -       -      +
    116W  LEU*     3.8    19.2    -      -       +      -
    117W  ARG*     3.3    27.8    +      -       -      +
    118W  LEU*     4.0    22.4    -      -       +      +
    119W  HIS*     3.7    21.5    +      -       -      +
    153W  MET      4.6     0.2    +      -       -      -
    154W  ARG*     2.7    26.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 70 (chain W). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     65W  VAL      3.8     0.2    +      -       -      -
     66W  LEU*     2.8    42.0    +      -       +      +
     67W  ALA      4.4     1.2    +      -       -      +
     68W  THR      3.8     0.9    -      -       -      +
     69W  ARG*     1.3    79.6    -      -       -      +
     71W  GLU*     1.3    65.6    +      -       -      +
     77W  ALA      4.5     1.6    -      -       -      +
     78W  ASP*     5.2     0.9    -      -       -      -
     79W  VAL*     3.2    36.0    +      -       +      +
    107W  LEU*     5.5     0.9    -      -       +      -
    112W  LEU*     4.6     8.1    -      -       +      -
    116W  LEU*     4.0     9.6    -      -       +      -
----------------------------------------------------------
 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