Contacts of the strand formed by residues 409 - 418 (chain A) in PDB entry 1KIX


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 ASN 409 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    387A  VAL*     3.9     7.9    -      -       +      -
    388A  LYS      3.5     3.9    -      -       -      +
    389A  GLY*     4.1     0.5    -      -       -      -
    392A  ARG*     5.5     1.2    +      -       -      -
    400A  LEU*     3.3    38.5    -      -       -      +
    407A  GLY*     2.8    22.8    +      -       -      +
    408A  ASP*     1.3    77.6    -      -       -      +
    410A  ILE*     1.3    70.5    +      -       -      +
    448A  ALA*     3.1    35.6    +      -       -      +
    449A  ASP*     4.2     1.2    -      -       -      +
    450A  ASN*     4.1     9.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 410 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    387A  VAL*     3.1     9.2    -      -       -      +
    388A  LYS*     3.0    36.2    +      -       -      +
    390A  TYR*     3.7    37.5    -      -       +      -
    392A  ARG*     4.4    11.0    -      -       -      +
    397A  SER*     4.2     3.6    -      -       -      +
    408A  ASP      5.1     0.2    -      -       -      +
    409A  ASN*     1.3    80.8    -      -       -      +
    411A  PHE*     1.3    66.2    +      -       -      +
    412A  GLN*     3.6    36.3    -      -       +      +
    435A  THR*     3.5    13.5    -      -       -      +
    436A  GLN*     3.7    30.3    -      -       +      +
    448A  ALA*     4.1     3.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 411 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    386A  TRP*     3.4    11.2    -      +       +      -
    387A  VAL*     3.5    23.3    -      -       +      -
    410A  ILE*     1.3    75.0    -      -       -      +
    412A  GLN*     1.3    66.9    +      -       -      +
    413A  VAL*     4.4     7.6    -      -       +      -
    433A  LEU*     3.2    16.0    -      -       +      +
    435A  THR*     2.9    47.6    +      -       +      +
    440A  GLY      5.6     0.7    -      -       -      -
    441A  ALA*     4.7    11.9    -      -       -      -
    444A  PHE*     3.7    37.7    -      +       +      -
    446A  VAL      3.6    25.4    -      -       -      -
    447A  LYS      4.3     2.5    -      -       -      -
    448A  ALA*     3.7    25.8    -      -       +      -
    461A  LEU*     4.0    21.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 412 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    380A  PRO*     3.7    18.4    -      -       -      +
    385A  GLU      5.0     1.1    -      -       -      +
    386A  TRP      3.1    11.6    +      -       -      +
    388A  LYS*     4.6    15.9    -      -       +      +
    390A  TYR*     5.1     1.4    -      -       -      -
    397A  SER*     2.9    34.7    +      -       -      -
    410A  ILE*     3.6    15.7    -      -       +      +
    411A  PHE*     1.3    79.7    -      -       -      +
    413A  VAL*     1.3    59.5    +      -       -      +
    414A  GLN*     5.4     0.5    -      -       -      +
    434A  TYR*     3.4    47.4    +      -       +      +
    436A  GLN*     3.2    26.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 413 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    378A  ILE*     3.4    31.4    -      -       +      -
    379A  GLU      3.6     4.7    -      -       -      +
    386A  TRP*     3.6    46.4    -      -       +      +
    411A  PHE*     4.4     5.8    -      -       +      -
    412A  GLN*     1.3    79.0    -      -       -      +
    414A  GLN*     1.3    64.3    -      -       -      +
    415A  PHE*     3.7    18.3    +      -       +      -
    432A  LEU*     3.5     2.4    -      -       -      -
    433A  LEU*     2.8    46.6    +      -       +      +
    434A  TYR*     3.6     3.3    -      -       -      -
    444A  PHE*     4.3     9.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 414 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    377A  LYS      3.9     0.3    -      -       -      +
    378A  ILE*     3.3     6.9    -      -       -      +
    379A  GLU*     2.7    53.5    +      -       +      +
    412A  GLN      5.4     0.4    -      -       -      +
    413A  VAL*     1.3    74.3    -      -       -      +
    415A  PHE*     1.3    65.6    +      -       -      +
    416A  LEU*     4.0     1.8    +      -       +      +
    430A  ARG*     3.1    46.9    +      -       +      +
    431A  VAL      3.7     2.9    -      -       -      +
    432A  LEU*     3.2    27.9    -      -       +      +
    434A  TYR*     4.1    15.9    +      -       -      +
    485A  PHE*     6.0     2.8    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 415 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    373A  PHE*     4.9     4.9    -      +       -      -
    375A  VAL*     4.2    14.6    -      -       +      -
    377A  LYS      3.7     1.8    -      -       -      -
    378A  ILE*     3.7    30.3    -      -       +      -
    413A  VAL*     3.7    18.6    -      -       +      -
    414A  GLN*     1.3    79.7    -      -       -      +
    416A  LEU*     1.3    63.9    +      -       -      +
    417A  VAL*     3.4    17.9    +      -       +      +
    429A  TYR      3.4     0.7    -      -       -      +
    430A  ARG*     3.3     4.7    -      -       -      -
    431A  VAL*     2.9    39.2    +      -       +      +
    433A  LEU*     4.6     9.6    -      -       +      -
    443A  PHE*     4.1    15.7    -      +       -      -
    444A  PHE*     4.0    18.4    -      +       -      -
    468A  LEU*     3.9    19.7    -      -       +      -
    475A  VAL*     5.7     1.1    -      -       +      -
    488A  ILE*     3.7    31.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 416 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    375A  VAL*     3.6     0.9    -      -       -      -
    376A  THR*     2.8    41.4    +      -       -      +
    377A  LYS*     2.9    38.1    +      -       +      +
    379A  GLU*     3.6    20.0    -      -       +      +
    414A  GLN      4.4     5.4    -      -       -      +
    415A  PHE*     1.3    74.3    -      -       -      +
    417A  VAL*     1.3    61.8    +      -       -      +
    428A  THR*     3.3    33.9    -      -       +      +
    429A  TYR      3.3     4.3    -      -       -      -
    430A  ARG*     3.4    36.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 417 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350A  LEU*     3.8    22.2    -      -       +      -
    373A  PHE*     3.3    40.4    -      -       +      -
    374A  TYR      3.5     6.3    -      -       -      +
    375A  VAL*     4.3     2.7    -      -       +      -
    376A  THR*     4.7     0.7    -      -       -      -
    415A  PHE*     3.6    20.6    -      -       +      +
    416A  LEU*     1.3    80.9    -      -       -      +
    418A  LYS*     1.3    77.2    +      -       -      +
    428A  THR*     5.4     0.2    -      -       -      -
    429A  TYR*     2.7    39.5    +      -       +      +
    431A  VAL*     4.0    20.2    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 418 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    350A  LEU*     3.4     8.7    -      -       -      -
    373A  PHE*     3.1     5.5    -      -       -      +
    374A  TYR*     3.0    56.6    +      -       +      +
    376A  THR*     4.1    14.1    -      -       +      -
    417A  VAL*     1.3    84.1    -      -       -      +
    419A  ASP*     1.3    60.1    +      -       -      +
    422A  THR*     2.8    25.9    +      -       -      +
    423A  GLN*     3.7     8.7    -      -       -      +
    425A  ASN*     2.7    47.6    +      -       -      -
    426A  ASN*     5.4     0.4    -      -       -      +
    427A  ASN      2.9    21.8    +      -       -      -
    428A  THR*     5.2     0.9    -      -       -      +
    429A  TYR*     3.8     5.5    -      -       +      -
----------------------------------------------------------
 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