Contacts of the helix formed by residues 615 - 624 (chain P) in PDB entry 1HI0


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 THR 615 (chain P).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    613P  GLU      4.7     3.1    -      -       -      +
    614P  LEU*     1.3    77.4    -      -       -      +
    616P  PRO*     1.3    75.6    -      -       -      +
    617P  ILE*     2.9    21.7    +      -       -      +
    618P  ASP*     2.7    36.0    +      -       -      +
    619P  LEU*     3.0    15.4    +      -       -      +
    636P  ASP      5.1     3.2    +      -       -      +
    638P  SER*     3.5    10.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 616 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    553P  SER*     3.7    14.3    -      -       -      -
    556P  ASP*     3.5    43.3    -      -       +      +
    557P  THR*     5.4     2.5    -      -       -      +
    615P  THR*     1.3    91.6    -      -       -      +
    617P  ILE*     1.3    64.7    -      -       +      +
    619P  LEU*     3.1     7.5    +      -       +      +
    620P  GLU*     3.0    27.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 617 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305P  THR*     5.1    10.1    -      -       -      +
    306P  THR*     5.5     7.4    -      -       +      -
    615P  THR*     2.9    10.1    +      -       -      +
    616P  PRO*     1.3    81.7    -      -       +      +
    618P  ASP*     1.3    64.6    +      -       -      +
    620P  GLU*     3.1     1.4    +      -       -      +
    621P  VAL*     2.9    22.2    +      -       -      +
    632P  TRP*     3.8    57.4    -      -       +      +
    636P  ASP*     3.4    33.4    -      -       +      +
    637P  VAL*     3.9    15.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 618 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    614P  LEU*     3.6    19.6    -      -       +      +
    615P  THR*     2.7    34.9    +      -       -      +
    617P  ILE*     1.3    79.2    -      -       -      +
    619P  LEU*     1.3    57.9    +      -       -      +
    621P  VAL*     3.4     5.7    +      -       -      +
    622P  LEU*     3.0    34.8    +      -       -      +
    636P  ASP      4.7     0.2    -      -       -      +
    637P  VAL*     3.7    11.6    -      -       -      +
    638P  SER*     2.5    50.2    +      -       -      -
    641P  ILE*     4.3    12.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 619 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    549P  LEU*     4.1    25.3    -      -       +      +
    552P  ALA*     3.3    32.5    -      -       +      +
    553P  SER*     3.8    21.3    -      -       -      +
    611P  LEU*     4.1    20.2    -      -       +      -
    614P  LEU*     3.8    33.9    -      -       +      +
    615P  THR      3.0    13.8    +      -       -      +
    616P  PRO*     3.1     8.3    +      -       +      +
    618P  ASP*     1.3    73.3    -      -       -      +
    620P  GLU*     1.3    66.0    +      -       -      +
    622P  LEU*     3.1    14.6    +      -       -      +
    623P  ALA*     3.1    15.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 620 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    524P  ASN*     5.1     2.9    -      -       -      +
    550P  ALA*     4.1    15.1    -      -       -      +
    553P  SER*     2.6    27.7    +      -       -      +
    554P  MET*     4.3     1.2    +      -       -      -
    557P  THR*     3.2    32.9    +      -       -      +
    558P  TYR*     4.7     6.9    +      -       -      -
    616P  PRO      3.0    17.4    +      -       -      +
    617P  ILE      3.7     3.8    -      -       -      +
    619P  LEU*     1.3    75.3    -      -       -      +
    621P  VAL*     1.3    58.4    +      -       -      +
    623P  ALA*     3.4     5.5    +      -       -      +
    624P  ASP*     2.9    31.0    +      -       -      +
    627P  LYS*     3.9    23.3    +      -       +      +
    632P  TRP*     3.8    26.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 621 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    617P  ILE      2.9    19.1    +      -       -      +
    618P  ASP*     3.7     6.3    -      -       -      +
    620P  GLU*     1.3    73.8    -      -       -      +
    622P  LEU*     1.3    61.4    +      -       +      +
    624P  ASP      3.9     5.6    -      -       -      -
    625P  PRO*     2.9    34.7    -      -       +      +
    627P  LYS*     5.1     0.4    -      -       +      -
    628P  LEU*     4.1    27.8    -      -       +      +
    632P  TRP*     3.8    24.5    -      -       +      -
    637P  VAL*     4.0    25.8    -      -       +      -
    641P  ILE*     5.5     1.6    -      -       +      -
    645P  LEU*     3.5    24.0    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 622 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    545P  PRO*     3.2    16.6    -      -       -      +
    546P  PHE*     3.1    41.7    +      -       +      -
    549P  LEU*     3.6    28.0    -      -       +      -
    598P  LEU*     3.8    23.1    -      -       +      -
    614P  LEU*     4.2    11.9    -      -       +      -
    618P  ASP      3.0    22.2    +      -       -      +
    619P  LEU*     3.1     5.6    +      -       -      +
    621P  VAL*     1.3    77.0    -      -       -      +
    623P  ALA*     1.3    58.0    +      -       -      +
    641P  ILE*     3.8    28.7    -      -       +      -
    644P  VAL*     4.7     7.0    -      -       +      -
    645P  LEU*     4.6    19.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 623 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    544P  ARG*     3.5    30.9    +      -       -      +
    546P  PHE      3.6    24.0    +      -       -      +
    547P  PRO*     4.3     5.5    -      -       +      +
    550P  ALA*     4.0    26.7    -      -       +      +
    619P  LEU      3.1    14.2    +      -       -      +
    620P  GLU*     3.9     4.9    -      -       -      +
    622P  LEU*     1.3    77.4    -      -       -      +
    624P  ASP*     1.3    61.1    +      -       +      +
    625P  PRO*     3.9     1.6    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 624 (chain P). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    530P  TYR*     5.9     1.0    -      -       -      -
    543P  LYS      4.3     5.4    -      -       -      +
    544P  ARG*     5.4     2.6    -      -       +      +
    620P  GLU*     2.9    13.5    +      -       -      +
    621P  VAL*     3.1     5.6    -      -       -      +
    623P  ALA*     1.3    82.2    -      -       +      +
    625P  PRO*     1.3    61.5    -      -       -      +
    626P  ASN*     2.8    37.0    +      -       -      +
    627P  LYS*     3.0    53.3    +      -       +      +
    630P  TYR*     4.2     3.8    +      -       -      -
----------------------------------------------------------
 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