Contacts of the helix formed by residues 625 - 637 (chain d) in PDB entry 6QX2


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 VAL 625 (chain d).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    619d  GLU*     5.3     8.5    -      -       +      +
    620d  MET*     4.4     4.9    -      -       -      +
    623d  GLY*     3.3     4.3    -      -       -      +
    624d  ASP*     1.3    75.9    -      -       +      +
    626d  VAL*     1.3    63.2    +      -       -      +
    627d  GLU*     3.6    10.9    +      -       +      +
    628d  ASN*     3.3    34.1    +      -       -      +
    629d  ARG*     3.9    18.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 626 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178c  GLY      3.3    26.5    -      -       -      +
    624d  ASP      3.4    10.3    +      -       -      +
    625d  VAL*     1.3    71.6    -      -       -      +
    627d  GLU*     1.3    60.6    +      -       -      +
    629d  ARG*     3.3    32.5    +      -       -      +
    630d  ARG*     2.9    25.9    +      -       +      +
     17e    G      4.1    13.5    -      -       +      +
     18e    C      3.4    27.4    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 627 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    625d  VAL*     3.4     7.9    -      -       +      +
    626d  VAL*     1.3    79.0    -      -       -      +
    628d  ASN*     1.3    62.8    +      -       -      +
    630d  ARG*     3.1    43.3    +      -       -      +
    631d  GLN*     2.9    37.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 628 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    619d  GLU*     5.9     0.8    +      -       -      -
    620d  MET*     3.9    26.2    -      -       +      +
    625d  VAL*     3.3    32.5    -      -       -      +
    626d  VAL      3.4     0.4    -      -       -      -
    627d  GLU*     1.3    80.1    -      -       -      +
    629d  ARG*     1.3    58.1    +      -       -      +
    631d  GLN*     3.5     7.3    +      -       -      +
    632d  PHE*     3.0    28.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 629 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22c  PHE*     3.6    26.0    -      -       +      -
    177c  VAL*     4.1     5.3    -      -       +      +
    178c  GLY*     4.0     4.2    -      -       -      +
    466d  LYS*     3.4     9.7    -      -       -      +
    620d  MET*     3.5    17.9    +      -       -      +
    621d  LEU*     2.9    30.7    -      -       +      +
    623d  GLY      3.1    24.2    +      -       -      -
    624d  ASP      4.6     3.0    +      -       -      -
    625d  VAL      3.9     3.7    +      -       -      +
    626d  VAL*     3.3    38.7    +      -       -      +
    628d  ASN*     1.3    75.2    -      -       -      +
    630d  ARG*     1.3    64.0    +      -       -      +
    632d  PHE*     3.4     6.9    +      -       -      +
    633d  ILE*     3.2    29.4    +      -       +      +
     16e    C      4.1     0.4    -      -       -      -
     17e    G      1.7    58.2    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 630 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    178c  GLY*     3.2    34.9    -      -       -      +
    179c  MET*     4.5     6.3    -      -       +      -
    626d  VAL*     2.9     9.8    +      -       +      +
    627d  GLU*     3.1    44.7    +      -       -      +
    629d  ARG*     1.3    72.5    -      -       -      +
    631d  GLN*     1.3    81.9    +      -       -      +
    633d  ILE*     3.2     9.2    +      -       -      +
    634d  GLU*     3.0    50.0    +      -       -      +
    701d  JK8      3.4    50.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 631 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    627d  GLU*     2.9    25.1    +      -       +      +
    628d  ASN*     3.5     9.4    -      -       -      +
    629d  ARG      3.3     0.2    -      -       -      -
    630d  ARG*     1.3   101.6    +      -       -      +
    632d  PHE*     1.3    57.1    +      -       -      +
    634d  GLU*     3.3    12.4    +      -       -      +
    635d  ASP*     2.9    68.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 632 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19c  ARG*     3.3    57.0    -      -       +      -
     22c  PHE*     4.6     2.7    -      +       -      -
     23c  LEU*     4.1    23.8    -      -       +      -
    620d  MET*     3.7    26.5    -      -       +      -
    621d  LEU*     3.3    26.2    -      -       +      -
    628d  ASN      3.0    14.7    +      -       -      +
    629d  ARG      3.4    11.7    -      -       -      +
    631d  GLN*     1.3    76.0    -      -       -      +
    633d  ILE*     1.3    63.2    +      -       +      +
    635d  ASP*     4.5     4.5    -      -       -      -
    636d  ASN*     2.9    64.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 633 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     22c  PHE*     4.7     4.0    -      -       +      -
     23c  LEU*     3.9     8.5    -      -       +      -
     26c  ALA*     3.4    30.5    -      -       +      -
     27c  MET*     3.4    23.4    -      -       +      +
     30c  ILE*     3.8    19.5    -      -       +      -
    177c  VAL*     3.9    30.1    -      -       +      +
    178c  GLY      4.5     0.4    -      -       -      +
    629d  ARG      3.2    20.1    +      -       -      +
    630d  ARG*     3.2     9.2    +      -       -      +
    632d  PHE*     1.3    83.1    -      -       +      +
    634d  GLU*     1.3    55.0    +      -       -      +
    636d  ASN      3.3     1.6    +      -       -      -
    637d  ALA*     2.8    34.8    +      -       -      +
    701d  JK8      3.8     9.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 634 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    630d  ARG*     3.0    33.3    +      -       -      +
    631d  GLN*     3.7    16.9    +      -       -      +
    633d  ILE*     1.3    77.2    -      -       -      +
    635d  ASP*     1.3    64.8    +      -       -      +
    636d  ASN      3.4     0.2    +      -       -      -
    637d  ALA*     3.4    12.6    +      -       -      +
    701d  JK8      3.2    76.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 635 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    631d  GLN*     2.9    54.2    +      -       -      +
    632d  PHE*     3.6     3.4    +      -       -      +
    634d  GLU*     1.3    79.7    -      -       -      +
    636d  ASN*     1.3    72.5    +      -       -      +
    637d  ALA      3.8     2.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 636 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     19c  ARG*     3.6    20.9    +      -       -      +
     23c  LEU*     3.3    36.9    -      -       +      +
    632d  PHE*     2.9    47.8    +      -       +      +
    633d  ILE      3.5     1.1    -      -       -      -
    635d  ASP*     1.3    85.5    -      -       -      +
    637d  ALA*     1.3    65.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 637 (chain d). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     23c  LEU*     5.2     0.2    -      -       -      -
     27c  MET*     3.4    25.4    -      -       +      -
    633d  ILE      2.8    16.4    +      -       -      +
    634d  GLU      3.4     7.7    +      -       -      +
    635d  ASP      3.5     2.8    -      -       -      +
    636d  ASN*     1.3    82.3    -      -       -      +
    701d  JK8      3.5    49.2    -      -       +      -
----------------------------------------------------------
 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