Contacts of the helix formed by residues 222 - 237 (chain B) in PDB entry 2VKZ


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 GLY 222 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    193B  GLU*     3.6    24.7    -      -       -      -
    220B  ALA*     3.1    11.0    -      -       -      +
    221B  LEU*     1.3    80.3    -      -       -      +
    223B  LYS*     1.3    60.3    +      -       -      -
    224B  GLN      3.6     1.8    -      -       -      -
    226B  SER*     2.7    33.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 223 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192B  LYS*     3.2    44.5    +      -       +      +
    193B  GLU*     3.7     1.8    +      -       -      -
    222B  GLY*     1.3    71.4    -      -       -      +
    224B  GLN*     1.3    61.9    +      -       -      +
    226B  SER*     3.5     4.6    +      -       -      -
    227B  SER*     3.2    22.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 224 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  LEU*     4.3    12.3    -      -       +      -
    158B  LYS*     6.0     0.4    -      -       -      +
    189B  ASP*     3.7    54.6    +      -       +      +
    192B  LYS*     4.0    24.2    +      -       +      +
    193B  GLU*     3.2     9.9    +      -       +      +
    223B  LYS*     1.3    76.6    -      -       -      +
    225B  SER*     1.3    61.9    +      -       -      +
    227B  SER*     3.8     8.6    +      -       -      -
    228B  LEU*     3.3    40.4    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 225 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150B  LEU*     3.6     5.6    -      -       -      +
    154B  LEU*     4.4     8.7    -      -       -      -
    193B  GLU*     2.9    18.3    +      -       -      -
    221B  LEU*     3.0    23.5    +      -       -      +
    222B  GLY      3.9     0.2    +      -       -      -
    223B  LYS      3.3     0.2    -      -       -      -
    224B  GLN*     1.3    74.6    -      -       -      +
    226B  SER*     1.3    58.3    +      -       -      +
    227B  SER      3.2     2.2    -      -       -      -
    228B  LEU*     3.2     6.6    +      -       -      +
    229B  LEU*     3.0    35.6    +      -       -      +
    266B  LEU*     3.1    32.1    -      -       -      +
    269B  LEU*     4.7     1.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 226 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221B  LEU*     3.9    20.1    +      -       -      +
    222B  GLY      2.7    23.7    +      -       -      -
    223B  LYS*     3.8     5.4    -      -       -      -
    225B  SER*     1.3    77.0    -      -       -      +
    227B  SER*     1.3    59.4    +      -       -      +
    229B  LEU*     4.1     6.5    -      -       -      +
    230B  SER*     3.6    23.6    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 227 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1139A  GLU*     3.2    30.2    +      -       -      -
    223B  LYS      3.2    16.3    +      -       -      -
    224B  GLN*     4.0    13.9    -      -       -      -
    225B  SER      3.2     0.6    -      -       -      -
    226B  SER*     1.3    77.9    -      -       -      +
    228B  LEU*     1.3    58.5    +      -       -      +
    230B  SER*     3.7     3.1    +      -       -      -
    231B  ARG*     3.2    32.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 228 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    154B  LEU*     3.5    32.1    -      -       +      +
    157B  HIS*     3.4    38.4    -      -       +      +
    189B  ASP*     5.7     0.7    -      -       -      +
    224B  GLN*     3.3    28.4    +      -       -      +
    225B  SER      3.2     6.1    +      -       -      +
    227B  SER*     1.3    82.4    -      -       -      +
    229B  LEU*     1.3    57.5    +      -       -      +
    230B  SER      3.5     0.2    -      -       -      -
    231B  ARG*     3.8    21.0    -      -       -      +
    232B  LEU*     3.2    26.2    +      -       -      +
    269B  LEU*     3.5    23.6    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 229 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    221B  LEU*     4.4    25.6    -      -       +      -
    225B  SER*     3.0    27.5    +      -       -      +
    226B  SER*     3.9     4.9    +      -       -      +
    227B  SER      3.3     0.2    -      -       -      -
    228B  LEU*     1.3    76.0    -      -       -      +
    230B  SER*     1.3    61.0    +      -       -      +
    231B  ARG      3.3     0.4    -      -       -      -
    232B  LEU*     3.8     8.5    -      -       +      +
    233B  ILE*     3.1    32.9    +      -       -      +
    243B  ILE*     4.4    13.7    -      -       +      -
    247B  ARG*     5.4     0.4    -      -       -      +
    262B  ASP      5.0     0.4    -      -       -      +
    265B  LEU*     3.2    54.7    -      -       +      +
    266B  LEU*     4.2     5.2    -      -       +      +
    269B  LEU*     3.5    28.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 230 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1137A  SER*     3.8    24.7    +      -       -      -
   1162A  GLU*     3.4    22.2    +      -       -      -
    226B  SER      3.6    17.7    +      -       -      -
    227B  SER*     3.7     3.3    +      -       -      -
    228B  LEU      3.5     0.2    -      -       -      -
    229B  LEU*     1.3    78.8    -      -       -      +
    231B  ARG*     1.3    58.3    +      -       -      +
    232B  LEU      3.5     0.2    -      -       -      -
    233B  ILE*     3.9     8.6    -      -       -      +
    234B  SER*     3.3    26.3    +      -       -      -
    243B  ILE*     3.9    11.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 231 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1267A  ASP*     3.7    32.5    +      -       -      -
   1268A  GLU      4.8     0.6    +      -       -      -
   1269A  PRO*     4.5    26.1    -      -       -      +
    157B  HIS*     6.3     0.4    -      -       -      -
    227B  SER*     3.2    22.1    +      -       -      +
    228B  LEU*     3.8    22.1    -      -       -      +
    230B  SER*     1.3    76.9    -      -       -      +
    232B  LEU*     1.3    60.5    +      -       -      +
    233B  ILE      3.3     0.2    -      -       -      -
    234B  SER*     4.1     3.4    -      -       -      -
    235B  SER*     2.8    33.7    +      -       -      +
    272B  GLU*     5.9     1.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 232 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    228B  LEU      3.2    16.2    +      -       -      +
    229B  LEU*     3.8    11.0    -      -       +      +
    230B  SER      3.5     0.2    -      -       -      -
    231B  ARG*     1.3    76.1    -      -       -      +
    233B  ILE*     1.3    63.2    +      -       +      +
    235B  SER*     4.5     1.8    -      -       -      -
    236B  LYS*     3.2    32.5    +      -       +      +
    237B  MET*     4.0     9.4    +      -       +      +
    265B  LEU*     4.1     7.6    -      -       +      +
    268B  ALA*     3.6    14.1    -      -       +      +
    269B  LEU*     3.5    36.1    -      -       +      +
    272B  GLU*     3.3    46.0    -      -       +      +
    273B  PRO*     4.0    11.9    -      -       +      -
    286B  PHE*     5.1     4.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 233 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    229B  LEU      3.1    20.5    +      -       -      +
    230B  SER*     4.1     8.3    -      -       -      +
    231B  ARG      3.3     0.2    -      -       -      -
    232B  LEU*     1.3    81.6    -      -       +      +
    234B  SER*     1.3    62.6    +      -       -      +
    237B  MET*     3.0    55.4    -      -       +      +
    241B  PHE      3.9     5.0    -      -       -      +
    242B  THR*     3.7    23.3    -      -       +      +
    243B  ILE*     3.4    41.3    -      -       +      +
    246B  ALA*     4.1     8.7    -      -       +      -
    265B  LEU*     5.6     6.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 234 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    230B  SER      3.3    17.5    +      -       -      -
    231B  ARG*     3.6     5.4    +      -       -      -
    232B  LEU      3.4     0.4    -      -       -      -
    233B  ILE*     1.3    83.4    -      -       -      +
    235B  SER*     1.3    53.5    +      -       -      +
    237B  MET      4.4     2.5    -      -       -      +
    276B  ARG*     2.7    25.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 235 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    231B  ARG*     2.8    21.7    +      -       -      +
    234B  SER*     1.3    77.5    -      -       -      +
    236B  LYS*     1.3    84.6    +      -       -      +
    276B  ARG*     3.1    40.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 236 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
   1269A  PRO*     5.0    14.1    -      -       -      +
    232B  LEU*     3.2    19.3    +      -       +      +
    235B  SER*     1.3   108.4    +      -       -      +
    237B  MET*     1.3    61.9    -      -       +      +
    272B  GLU*     3.7    29.4    +      -       -      +
    273B  PRO*     3.0    48.2    -      -       +      +
    274B  ALA*     4.6     4.2    -      -       -      +
    275B  ALA*     3.8    17.9    -      -       -      +
    276B  ARG*     3.9     6.7    -      -       -      +
    277B  LEU*     3.0    33.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 237 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    232B  LEU*     4.0    11.8    +      -       +      +
    233B  ILE*     3.0    55.8    +      -       +      +
    234B  SER      4.4     2.9    -      -       -      +
    236B  LYS*     1.3    85.6    -      -       +      +
    238B  PRO*     1.3    76.3    -      -       +      +
    239B  GLY*     4.7     0.2    -      -       -      -
    241B  PHE*     3.2    50.7    -      -       +      +
    246B  ALA*     5.0     2.2    -      -       +      -
    268B  ALA*     6.4     0.4    -      -       +      -
    273B  PRO*     6.4     0.2    -      -       -      -
    276B  ARG*     3.2    16.6    +      -       -      -
    277B  LEU*     4.4     9.0    -      -       -      -
    283B  ALA*     4.2     9.9    -      -       -      +
    286B  PHE*     4.5    20.4    -      -       +      -
    287B  LEU*     5.2     6.7    -      -       +      -
----------------------------------------------------------
 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