Contacts of the helix formed by residues 500 - 509 (chain A) in PDB entry 6EJ9


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 ARG 500 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    408A  LEU      5.0     0.6    +      -       -      -
    409A  LEU*     3.9    33.3    +      -       +      +
    411A  MET      5.5     2.4    +      -       -      -
    412A  THR*     6.3     0.4    -      -       -      +
    414A  TRP      4.0     4.4    +      -       -      -
    415A  PRO*     4.5     3.3    -      -       -      +
    416A  TRP*     3.3    79.7    +      -       +      +
    417A  ASP*     3.0    18.9    +      -       -      +
    499A  ASN*     1.3    73.6    -      -       -      +
    501A  ARG*     1.3    57.8    +      -       -      +
    503A  VAL*     3.3     1.6    +      -       -      +
    504A  GLU*     2.9    55.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 501 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    444A  ASP*     6.1     0.9    -      -       -      -
    499A  ASN*     3.2    11.0    +      -       -      +
    500A  ARG*     1.3    80.2    -      -       -      +
    502A  PHE*     1.3    59.4    +      -       -      +
    504A  GLU*     3.5    20.2    +      -       -      +
    505A  TYR*     3.2    19.9    +      -       -      +
    541A  HIS*     4.0    30.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 502 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    446A  ASN*     3.7    28.5    -      -       -      +
    498A  LEU*     4.0    30.3    -      -       +      -
    499A  ASN*     3.0    16.8    +      -       -      +
    501A  ARG*     1.3    75.8    -      -       -      +
    503A  VAL*     1.3    67.7    +      -       -      +
    505A  TYR*     3.2    16.0    +      +       -      -
    506A  VAL*     2.9    46.4    +      -       +      +
    532A  PHE*     4.2    13.2    -      +       -      -
    535A  VAL*     4.2     6.1    -      -       +      -
    536A  LEU*     3.7    48.2    -      -       +      -
    539A  SER*     4.3     2.5    -      -       -      -
    541A  HIS*     4.1    19.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 503 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405A  MET*     3.6    44.4    -      -       +      -
    409A  LEU*     4.0     9.4    -      -       +      -
    416A  TRP*     4.0    27.4    -      -       +      -
    419A  PHE*     4.2    11.4    -      -       +      -
    498A  LEU*     4.0    21.1    -      -       +      -
    499A  ASN      3.2    14.8    +      -       -      +
    500A  ARG      3.7     5.8    -      -       -      +
    502A  PHE*     1.3    74.6    -      -       -      +
    504A  GLU*     1.3    62.6    +      -       -      +
    506A  VAL*     3.4     6.5    +      -       -      +
    507A  THR*     2.9    30.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 504 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409A  LEU*     3.6    27.4    -      -       +      +
    500A  ARG*     2.9    44.3    +      -       -      +
    501A  ARG*     3.5    24.8    +      -       -      +
    502A  PHE      3.2     0.2    -      -       -      -
    503A  VAL*     1.3    76.3    -      -       -      +
    505A  TYR*     1.3    62.0    +      -       -      +
    507A  THR*     3.2     1.0    +      -       -      -
    508A  PHE*     3.0    37.4    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with TYR 505 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    300A  PHE*     4.6     0.3    -      -       -      -
    501A  ARG      3.2     5.2    +      -       -      +
    502A  PHE*     3.2    23.9    +      +       -      +
    504A  GLU*     1.3    78.9    -      -       -      +
    506A  VAL*     1.3    66.6    +      -       +      +
    509A  SER*     3.0    44.8    +      -       -      +
    511A  ASP*     2.7    31.5    +      -       -      -
    513A  LEU*     4.0     7.4    -      -       -      +
    514A  VAL*     3.6    20.4    -      -       +      +
    535A  VAL*     4.0     7.4    -      -       +      -
    539A  SER*     3.6    30.8    -      -       -      -
    540A  PRO*     3.7    16.6    -      -       +      +
    541A  HIS*     3.7    28.7    -      +       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 506 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402A  LEU*     3.7    29.4    -      -       +      -
    405A  MET*     4.9     3.4    -      -       -      -
    498A  LEU*     6.2     0.2    -      -       +      -
    502A  PHE*     2.9    52.1    +      -       +      +
    503A  VAL*     3.8     7.2    -      -       -      +
    505A  TYR*     1.3    81.5    -      -       +      +
    507A  THR*     1.3    62.1    +      -       -      +
    514A  VAL*     3.6    11.3    -      -       +      +
    518A  LYS*     2.9    24.5    +      -       -      -
    531A  PHE*     4.0    17.9    -      -       +      -
    532A  PHE*     4.5    12.3    -      -       +      -
    535A  VAL*     4.4     9.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 507 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    402A  LEU*     4.9     4.8    +      -       -      +
    405A  MET*     3.9    15.9    -      -       -      +
    406A  ARG*     3.1    68.4    +      -       +      +
    409A  LEU*     3.7    17.8    -      -       +      +
    503A  VAL*     2.9    17.7    +      -       -      +
    504A  GLU      3.8     2.7    -      -       -      -
    505A  TYR      3.1     0.2    -      -       -      -
    506A  VAL*     1.3    81.4    -      -       -      +
    508A  PHE*     1.3    67.6    +      -       +      +
    509A  SER      3.7     0.6    -      -       -      +
    518A  LYS*     3.6     9.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 508 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    406A  ARG*     3.7    23.8    -      -       +      -
    409A  LEU*     3.9    31.6    -      -       +      -
    410A  GLU*     5.0    16.6    -      -       +      -
    504A  GLU*     3.0    23.0    +      -       +      +
    507A  THR*     1.3    88.1    -      -       +      +
    509A  SER*     1.3    67.0    +      -       -      +
    510A  THR*     3.5    10.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 509 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    504A  GLU      4.3     0.2    +      -       -      -
    505A  TYR*     3.0    40.9    +      -       -      +
    506A  VAL      4.6     0.2    +      -       -      -
    507A  THR      3.7     2.0    -      -       -      +
    508A  PHE*     1.3    80.0    +      -       -      +
    510A  THR*     1.3    62.8    +      -       -      +
    511A  ASP*     3.2    30.4    +      -       -      +
    514A  VAL*     3.9    23.4    -      -       -      +
    515A  THR*     4.9     1.0    +      -       -      -
    518A  LYS*     5.0     2.3    +      -       -      -
----------------------------------------------------------
 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