Contacts of the helix formed by residues 272 - 284 (chain F) in PDB entry 6G2T


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 272 (chain F).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    177F  LEU*     4.4     0.9    -      -       -      -
    179F  LEU*     4.9     0.2    -      -       -      -
    260F  LEU      3.3    14.1    -      -       -      -
    261F  PHE      3.7     6.2    +      -       -      -
    263F  PRO*     3.5    17.2    -      -       -      +
    271F  CYS*     1.3    77.2    -      -       -      +
    273F  ILE*     1.3    65.1    +      -       -      -
    274F  HIS      3.3     2.7    -      -       -      -
    275F  GLU*     3.1    20.5    +      -       -      -
    276F  THR*     3.1    18.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 273 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152F  MET*     3.5    28.1    -      -       +      +
    159F  THR*     4.7     3.6    -      -       +      +
    177F  LEU*     3.8    15.7    -      -       +      -
    179F  LEU*     4.1     3.4    -      -       +      -
    260F  LEU*     3.1    40.6    +      -       +      +
    261F  PHE*     3.8    27.1    -      -       +      -
    272F  GLY*     1.3    71.4    -      -       -      -
    274F  HIS*     1.3    65.0    +      -       -      +
    276F  THR*     2.7    22.7    +      -       -      -
    277F  THR*     3.2    13.3    +      -       -      -
    308F  ILE*     5.1     5.8    -      -       +      -
    312F  MET*     3.5    29.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with HIS 274 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261F  PHE*     3.7    29.7    +      +       +      -
    262F  GLN*     5.2     5.1    +      -       -      -
    273F  ILE*     1.3    80.5    +      -       -      +
    275F  GLU*     1.3    98.4    +      -       -      +
    277F  THR*     3.3    11.8    +      -       -      -
    278F  PHE*     3.0    22.7    +      -       +      -
    312F  MET*     3.7    21.5    -      -       +      -
    315F  GLU*     2.9    51.7    +      -       +      +
    316F  ILE*     4.6     8.2    -      -       +      +
    319F  LEU*     4.3    15.9    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 275 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    261F  PHE      5.0     1.0    -      -       -      +
    262F  GLN*     5.7     1.6    +      -       -      -
    271F  CYS*     3.5    28.7    -      -       +      -
    272F  GLY*     3.1    22.7    +      -       -      -
    274F  HIS*     1.3   112.5    +      -       +      +
    276F  THR*     1.3    63.1    +      -       -      +
    278F  PHE*     3.1    13.4    +      -       -      +
    279F  ASN*     3.0    20.7    +      -       -      +
    319F  LEU*     4.8    10.3    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 276 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152F  MET*     4.9     2.3    -      -       -      +
    159F  THR*     5.7     0.2    -      -       -      +
    161F  THR*     4.3    12.0    +      -       -      -
    175F  LEU*     3.5    25.2    -      -       +      +
    177F  LEU*     3.7    27.8    -      -       +      +
    271F  CYS*     3.6    18.8    -      -       +      +
    272F  GLY      3.1    14.2    +      -       -      +
    273F  ILE*     2.7    24.9    +      -       -      -
    275F  GLU*     1.3    76.7    -      -       -      +
    277F  THR*     1.3    61.6    +      -       -      +
    279F  ASN*     3.2     6.2    +      -       -      +
    280F  SER*     3.1    26.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 277 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150F  ILE*     3.9    26.5    -      -       +      -
    152F  MET*     4.2    18.1    -      -       +      +
    161F  THR*     4.7     6.7    +      -       +      +
    273F  ILE      3.2    11.4    +      -       -      -
    274F  HIS*     3.3    11.6    +      -       -      -
    275F  GLU      3.2     0.4    -      -       -      -
    276F  THR*     1.3    79.9    +      -       -      +
    278F  PHE*     1.3    62.7    +      -       +      +
    280F  SER*     3.3     8.2    +      -       -      -
    281F  ILE*     3.1    37.4    +      -       +      +
    296F  THR*     5.0     7.2    -      -       +      +
    312F  MET*     4.4     7.3    -      -       -      +
    316F  ILE*     4.8    17.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 278 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    274F  HIS*     3.0    28.8    +      -       +      -
    275F  GLU*     3.1     9.5    +      -       -      +
    277F  THR*     1.3    79.7    -      -       +      +
    279F  ASN*     1.3    56.9    +      -       -      +
    281F  ILE*     3.2     9.2    +      -       +      +
    282F  MET*     2.9    45.2    +      -       +      +
    293F  TYR*     4.1    17.9    -      +       -      -
    315F  GLU      4.2     0.7    -      -       -      -
    316F  ILE*     3.1    52.5    -      -       +      -
    319F  LEU*     3.3    34.5    -      -       +      -
    320F  ALA*     3.5    27.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 279 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    175F  LEU*     3.5    26.5    -      -       +      +
    275F  GLU      3.0    12.3    +      -       -      +
    276F  THR*     3.2    10.1    +      -       -      +
    278F  PHE*     1.3    76.0    -      -       -      +
    280F  SER*     1.3    61.1    -      -       -      +
    282F  MET*     3.3     9.3    +      -       -      +
    283F  LYS*     3.1    49.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 280 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150F  ILE*     4.2     7.0    -      -       -      -
    161F  THR*     3.4    29.6    -      -       -      +
    163F  PRO*     4.4     3.6    -      -       -      -
    173F  ALA*     3.2    25.8    +      -       -      +
    175F  LEU*     3.5    13.1    -      -       -      +
    276F  THR      3.1    11.5    +      -       -      -
    277F  THR      3.5     9.0    -      -       -      -
    279F  ASN*     1.3    76.0    -      -       -      +
    281F  ILE*     1.3    61.8    +      -       -      +
    283F  LYS*     3.5     7.6    +      -       -      +
    284F  CYS*     3.2    27.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 281 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    150F  ILE*     3.9    15.7    -      -       +      -
    277F  THR*     3.1    31.1    +      -       +      +
    278F  PHE*     3.2    11.4    +      -       +      +
    280F  SER*     1.3    75.2    -      -       -      +
    282F  MET*     1.3    64.6    +      -       +      +
    284F  CYS*     3.1    18.8    +      -       -      +
    289F  ARG*     3.2    32.3    +      -       +      +
    292F  LEU*     4.9     9.2    -      -       +      +
    293F  TYR*     3.5    64.4    -      -       +      +
    296F  THR*     5.9     0.7    -      -       -      +
    316F  ILE*     5.8     2.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 282 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    243D  ASP*     5.6     2.2    -      -       -      +
    278F  PHE*     2.9    36.7    +      -       +      +
    279F  ASN*     3.3    10.3    +      -       -      +
    281F  ILE*     1.3    77.4    -      -       +      +
    283F  LYS*     1.3    60.4    +      -       +      +
    289F  ARG*     2.7    43.4    +      -       -      +
    293F  TYR*     3.7    22.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 283 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    186E  ASP*     5.6     7.5    +      -       -      +
    172F  HIS*     3.2    49.5    +      -       +      +
    173F  ALA*     3.8    17.3    -      -       -      +
    174F  ILE      5.8     0.4    -      -       -      -
    175F  LEU*     5.5     7.2    -      -       -      -
    279F  ASN*     3.1    42.8    +      -       -      +
    280F  SER*     3.6     8.3    -      -       -      +
    281F  ILE      3.2     0.2    -      -       -      -
    282F  MET*     1.3    77.8    -      -       +      +
    284F  CYS*     1.3    62.1    +      -       -      +
    285F  ASP*     4.0     2.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 284 (chain F). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    163F  PRO*     3.7    21.8    -      -       -      -
    170F  LEU*     3.5    20.9    -      -       +      -
    173F  ALA*     3.4    19.7    -      -       -      -
    280F  SER      3.2    18.6    -      -       -      -
    281F  ILE      3.1    12.2    +      -       -      +
    283F  LYS*     1.3    80.9    -      -       -      +
    285F  ASP*     1.3    62.6    +      -       -      +
    288F  ILE*     4.1     9.9    -      -       +      -
    289F  ARG*     2.8    29.3    +      -       +      -
    292F  LEU*     4.1    15.0    -      -       +      -
----------------------------------------------------------
 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