Contacts of the helix formed by residues 297 - 312 (chain C) in PDB entry 2R6C


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 297 (chain C).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    295C  SER      4.4     0.2    +      -       -      -
    296C  ILE*     1.3    78.5    -      -       -      +
    298C  VAL*     1.3    66.1    +      -       -      +
    299C  SER*     3.3    13.7    -      -       -      +
    300C  ASP*     3.1    41.7    +      -       -      +
    301C  ILE*     3.4     4.3    +      -       -      +
    325C  ILE*     4.5     0.4    -      -       -      -
    326C  GLN*     3.6    51.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 298 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296C  ILE      4.0     0.4    +      -       -      -
    297C  ARG*     1.3    68.2    -      -       -      +
    299C  SER*     1.3    64.3    +      -       -      +
    300C  ASP      2.9     5.4    -      -       -      -
    301C  ILE*     2.9    17.7    +      -       +      +
    302C  ARG*     2.9    18.2    +      -       +      +
    325C  ILE*     3.5    24.0    -      -       +      -
    326C  GLN      4.8     1.7    +      -       -      +
    342C  ILE*     3.7    34.8    -      -       +      -
    345C  SER*     3.7    30.5    -      -       -      +
    346C  LEU*     4.0    20.9    -      -       +      -
    349C  LEU*     5.6     1.8    -      -       +      -
     60D  ASP*     5.9     2.5    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 299 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    297C  ARG*     3.3    12.8    -      -       -      +
    298C  VAL*     1.3    77.3    -      -       -      +
    300C  ASP*     1.3    66.4    +      -       -      +
    302C  ARG*     3.9    13.7    -      -       -      +
    303C  ALA*     3.1    26.2    +      -       -      +
     32D  VAL*     5.3     1.0    -      -       -      +
     35D  SER*     5.1    13.6    +      -       -      -
     36D  GLU*     5.4     0.2    -      -       -      +
     56D  LEU*     5.3    11.6    -      -       -      +
     60D  ASP*     5.3     9.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 300 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    296C  ILE*     4.6    16.0    -      -       +      +
    297C  ARG*     3.1    34.2    +      -       -      +
    298C  VAL      2.9     1.0    +      -       -      -
    299C  SER*     1.3    82.8    +      -       -      +
    301C  ILE*     1.3    63.3    +      -       -      +
    302C  ARG      3.2     1.1    -      -       -      -
    303C  ALA*     4.0     7.0    -      -       -      +
    304C  LYS*     3.2    40.4    +      -       +      +
     36D  GLU*     5.3     8.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 301 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238C  PHE*     3.5    32.4    -      -       +      -
    240C  LEU*     5.9     0.7    -      -       +      -
    296C  ILE*     3.6    28.5    -      -       +      -
    297C  ARG      3.4     5.3    +      -       -      +
    298C  VAL*     2.9    10.3    +      -       +      +
    300C  ASP*     1.3    77.6    -      -       -      +
    302C  ARG*     1.3    57.2    +      -       -      +
    305C  CYS*     3.1    31.6    +      -       -      -
    317C  ILE*     4.5     0.7    -      -       +      -
    319C  ILE*     3.6    35.7    -      -       +      -
    325C  ILE*     3.6    26.9    -      -       +      -
    346C  LEU*     4.9     1.1    -      -       +      -
    349C  LEU*     3.9    20.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 302 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    298C  VAL*     2.9    17.3    +      -       +      +
    299C  SER*     3.9    12.4    -      -       -      +
    301C  ILE*     1.3    78.3    -      -       -      +
    303C  ALA*     1.3    61.4    +      -       -      +
    305C  CYS      4.2     0.2    -      -       -      -
    306C  ARG*     2.9    55.1    +      -       -      +
    345C  SER*     3.0    41.6    +      -       -      -
    348C  ALA*     3.4    25.7    +      -       -      +
    349C  LEU*     3.6    35.3    -      -       +      +
    352C  GLU*     3.0    23.0    +      -       -      +
     32D  VAL*     4.5     5.6    -      -       +      -
     59D  ALA      4.8     9.4    +      -       -      -
     61D  ARG      5.5     0.2    +      -       -      -
     62D  GLY      5.4     1.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 303 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    299C  SER      3.1    19.4    +      -       -      +
    300C  ASP*     4.0     9.0    -      -       -      +
    301C  ILE      3.2     0.2    -      -       -      -
    302C  ARG*     1.3    76.7    -      -       -      +
    304C  LYS*     1.3    66.6    +      -       +      +
    306C  ARG*     3.3     4.2    +      -       -      +
    307C  ARG*     3.3    20.7    +      -       -      +
     32D  VAL*     3.7    13.7    -      -       +      -
     35D  SER*     5.9     0.2    -      -       -      +
     36D  GLU*     3.3    45.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 304 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238C  PHE*     4.7    11.9    -      -       +      -
    291C  ASP*     3.4    37.3    +      -       +      +
    293C  THR*     3.6    11.5    +      -       -      +
    296C  ILE*     5.4     4.7    -      -       +      +
    300C  ASP*     3.2    25.7    +      -       -      +
    301C  ILE      4.3     1.6    -      -       -      +
    303C  ALA*     1.3    80.5    -      -       +      +
    305C  CYS*     1.3    62.7    +      -       -      +
    307C  ARG*     3.3    13.3    +      -       -      +
    308C  LEU*     3.1    22.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 305 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    236C  ALA*     4.3    10.1    -      -       -      -
    238C  PHE*     3.5    28.0    -      -       -      -
    301C  ILE*     3.1    22.4    +      -       -      +
    302C  ARG      4.4     2.5    -      -       -      +
    304C  LYS*     1.3    77.5    -      -       -      +
    306C  ARG*     1.3    63.1    +      -       -      +
    308C  LEU*     3.5     8.4    +      -       -      +
    309C  LYS*     3.3    18.0    +      -       -      +
    314C  LEU*     4.1     6.0    -      -       +      +
    317C  ILE*     3.5    29.2    -      -       +      -
    349C  LEU*     4.8     1.3    -      -       +      -
    353C  LEU*     3.7    25.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 306 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302C  ARG*     2.9    66.5    +      -       -      +
    303C  ALA      3.5     5.6    -      -       -      +
    304C  LYS      3.2     0.6    -      -       -      -
    305C  CYS*     1.3    79.0    -      -       -      +
    307C  ARG*     1.3    62.7    +      -       +      +
    309C  LYS*     3.4    17.4    +      -       +      +
    310C  GLN*     3.7    26.7    +      -       -      +
    352C  GLU*     2.4    46.0    +      -       -      +
    353C  LEU*     4.1    13.8    -      -       +      +
     29D  ALA*     4.3    17.9    +      -       -      +
     32D  VAL*     2.6    51.2    -      -       -      +
     33D  PRO*     5.3     3.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 307 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    303C  ALA      3.3    12.8    +      -       -      +
    304C  LYS*     3.3    14.0    +      -       -      +
    306C  ARG*     1.3    80.3    -      -       +      +
    308C  LEU*     1.3    61.3    +      -       -      +
    309C  LYS      3.2     0.7    +      -       -      -
    310C  GLN*     3.3    17.8    +      -       -      +
    311C  GLU*     3.4    19.6    +      -       -      +
     33D  PRO*     4.9     4.6    -      -       -      +
     36D  GLU*     2.4    44.2    +      -       -      +
     37D  ILE*     5.0     4.8    -      -       -      +
    103D  GLU*     3.7    25.6    +      -       -      -
    107D  ARG*     5.2     3.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 308 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234C  ASN*     5.1     2.7    -      -       +      -
    236C  ALA*     4.2    22.4    -      -       +      -
    289C  TYR*     3.7    58.3    -      -       +      +
    304C  LYS      3.1    14.0    +      -       -      +
    305C  CYS*     3.9     7.0    -      -       -      +
    307C  ARG*     1.3    80.3    -      -       -      +
    309C  LYS*     1.3    62.2    +      -       -      +
    311C  GLU*     4.0     4.0    -      -       +      +
    312C  SER*     3.3    26.5    +      -       -      +
    313C  GLY      3.3     7.1    +      -       -      +
    314C  LEU*     4.4    17.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 309 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    305C  CYS      3.3    12.4    +      -       -      +
    306C  ARG*     3.5    13.9    -      -       +      +
    307C  ARG      3.1     1.0    -      -       -      -
    308C  LEU*     1.3    79.6    -      -       -      +
    310C  GLN*     1.3    66.5    +      -       +      +
    311C  GLU      3.5     0.3    +      -       -      -
    312C  SER      4.0     0.3    +      -       -      -
    313C  GLY*     3.5    36.1    +      -       -      +
    314C  LEU*     4.2     9.8    +      -       +      +
    352C  GLU      5.0     2.5    -      -       -      +
    353C  LEU*     3.4    43.3    -      -       +      +
    354C  GLU*     5.4     4.5    -      -       -      +
    355C  VAL*     5.9     0.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 310 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306C  ARG*     3.7    32.9    +      -       -      +
    307C  ARG*     3.3     9.3    +      -       -      +
    309C  LYS*     1.3    82.6    -      -       +      +
    311C  GLU*     1.3    59.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 311 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    307C  ARG*     3.4    17.7    +      -       -      +
    308C  LEU*     4.6     3.6    -      -       +      +
    309C  LYS      3.3     0.6    -      -       -      -
    310C  GLN*     1.3    80.9    -      -       -      +
    312C  SER*     1.3    67.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 312 (chain C). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234C  ASN*     3.3    16.8    +      -       -      -
    289C  TYR*     3.9    18.7    +      -       -      -
    308C  LEU*     3.3    17.1    +      -       -      +
    309C  LYS      4.4     0.4    -      -       -      -
    310C  GLN      3.7     0.8    -      -       -      -
    311C  GLU*     1.3    89.3    +      -       -      +
    313C  GLY*     1.3    58.8    +      -       -      +
----------------------------------------------------------
 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