Contacts of the strand formed by residues 762 - 768 (chain A) in PDB entry 1KIT


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 MET 762 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    217A  VAL*     3.4     0.9    -      -       -      -
    218A  ILE*     2.8    38.5    +      -       -      +
    219A  PHE*     2.6    54.4    +      -       +      +
    223A  ASP*     2.8    39.3    -      -       +      +
    224A  ARG*     3.8     6.7    -      -       -      +
    226A  PRO*     3.1    54.1    -      -       +      -
    242A  ALA*     3.9     8.3    -      -       +      -
    754A  ILE*     4.4     7.0    -      -       +      -
    755A  VAL      2.8    13.7    -      -       -      +
    756A  GLU*     4.0     3.1    -      -       +      -
    760A  SER      3.3     8.0    +      -       -      +
    761A  ASN*     1.3    69.9    -      -       -      +
    763A  ARG*     1.3    57.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 763 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     88A  GLN*     4.1    11.1    +      -       -      +
     92A  PHE*     3.0    48.6    -      -       +      -
    215A  GLY*     3.0    39.5    +      -       -      +
    216A  ASP      3.3     3.4    -      -       -      -
    217A  VAL*     3.4    30.7    -      -       +      +
    220A  ARG*     5.7     1.4    -      -       -      +
    753A  VAL      3.6     0.7    -      -       -      +
    754A  ILE*     3.3     5.9    -      -       -      +
    755A  VAL*     2.8    34.1    +      -       +      +
    757A  THR*     3.2    24.9    +      -       +      +
    758A  ASP*     3.1    25.1    +      -       -      -
    761A  ASN*     3.8     2.4    +      -       -      +
    762A  MET*     1.3    74.4    -      -       -      +
    764A  ILE*     1.3    63.0    +      -       -      +
    765A  LEU*     5.1     2.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 764 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    214A  GLN*     3.3     7.3    -      -       -      +
    215A  GLY*     3.0    21.7    -      -       -      -
    216A  ASP*     2.9    20.4    +      -       +      +
    218A  ILE*     3.5    32.8    -      -       +      -
    228A  ILE*     4.5     6.3    -      -       +      -
    269A  GLY      4.4     9.4    -      -       -      +
    272A  TRP*     3.6    34.3    -      -       +      +
    752A  ILE*     4.0    23.1    -      -       +      -
    753A  VAL      3.1     5.2    -      -       -      +
    754A  ILE*     4.2    19.3    -      -       +      -
    763A  ARG*     1.3    73.8    -      -       -      +
    765A  LEU*     1.3    67.7    +      -       -      +
    766A  ARG*     4.4     9.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 765 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  PHE*     4.2    17.7    -      -       +      +
    214A  GLN*     3.3    10.1    -      -       +      +
    215A  GLY*     4.2    16.4    -      -       -      +
    715A  LEU*     5.0     0.4    -      -       +      -
    733A  LEU*     3.7    45.5    -      -       +      +
    734A  VAL*     4.6     9.6    -      -       +      -
    751A  ALA      3.6     1.2    -      -       -      +
    752A  ILE*     3.3     4.3    -      -       -      +
    753A  VAL*     2.5    63.8    +      -       +      +
    755A  VAL*     4.4    13.2    -      -       +      -
    763A  ARG*     5.1     1.3    -      -       +      -
    764A  ILE*     1.3    83.9    -      -       -      +
    766A  ARG*     1.3    62.8    +      -       -      +
    767A  MET*     4.2    12.1    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 766 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  ARG*     4.1    10.6    +      -       -      +
    212A  GLU*     2.6    35.6    +      -       -      +
    214A  GLN*     2.8    25.6    +      -       -      +
    267A  ASP      4.1     0.8    +      -       -      -
    268A  GLY*     2.9    40.5    +      -       -      -
    269A  GLY      4.1    12.6    -      -       -      -
    270A  ILE*     3.4    25.7    -      -       -      +
    746A  LEU*     4.3    12.3    -      -       +      +
    750A  ASN*     3.8    14.8    +      -       -      +
    751A  ALA      3.7     4.0    -      -       -      -
    752A  ILE*     4.6     5.2    -      -       +      +
    764A  ILE*     4.4    11.9    -      -       +      +
    765A  LEU*     1.3    74.5    -      -       -      +
    767A  MET*     1.3    62.0    +      -       -      +
    768A  PRO*     3.4     8.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 767 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     92A  PHE      5.9     0.7    -      -       -      +
    159A  VAL*     6.5     0.2    -      -       +      -
    161A  LEU*     4.2    14.8    -      -       +      -
    214A  GLN*     4.1    16.2    -      -       -      -
    717A  LEU*     5.7     3.1    -      -       +      -
    733A  LEU*     3.4    40.6    -      -       +      -
    743A  ILE*     6.3     0.2    -      -       +      -
    750A  ASN*     2.8    15.9    +      -       -      -
    751A  ALA*     2.9    37.2    +      -       +      +
    753A  VAL*     4.1    22.0    -      -       +      -
    765A  LEU*     4.2    16.2    -      -       +      -
    766A  ARG*     1.3    71.2    -      -       -      +
    768A  PRO*     1.3    67.6    -      -       +      +
    769A  ILE*     3.3    20.3    +      -       +      -
    772A  LEU*     3.9    18.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 768 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     95A  ARG*     3.6    37.0    -      -       +      +
    159A  VAL*     4.7    15.0    -      -       +      -
    214A  GLN*     5.0     2.9    -      -       -      +
    749A  GLU*     3.6     5.2    -      -       +      +
    750A  ASN*     3.3     7.4    -      -       -      +
    766A  ARG      3.4     9.0    -      -       -      +
    767A  MET*     1.3    87.9    -      -       +      +
    769A  ILE*     1.3    56.5    +      -       -      +
    770A  THR*     3.2     3.4    -      -       +      -
    771A  LEU*     3.3    19.2    +      -       +      -
    772A  LEU*     2.8    50.9    +      -       +      +
----------------------------------------------------------
 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