Contacts of the helix formed by residues 437 - 455 (chain A) in PDB entry 5A5J


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 437 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  LEU*     5.4     0.7    -      -       -      -
    435A  CYS*     3.0    13.8    -      -       -      -
    436A  VAL*     1.3    80.7    -      -       -      +
    438A  GLU*     1.3    54.4    +      -       -      +
    439A  ALA      3.2     2.9    -      -       -      -
    440A  LEU*     4.0     7.2    -      -       -      -
    441A  ALA*     2.7    38.0    +      -       -      +
   1493A  HEM      3.6    25.3    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 438 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    428A  PHE*     3.8    42.3    -      -       +      +
    434A  ILE*     4.1    27.9    -      -       +      +
    435A  CYS*     3.2    16.4    +      -       -      +
    436A  VAL      3.5     1.2    +      -       -      -
    437A  GLY*     1.3    75.7    -      -       -      +
    439A  ALA*     1.3    58.7    +      -       -      +
    441A  ALA*     3.8     1.4    -      -       -      +
    442A  GLY*     3.1    23.9    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 439 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  LEU      6.1     0.7    -      -       -      +
    132A  ARG*     5.0    19.7    -      -       +      +
    339A  MET*     5.3     1.9    -      -       -      +
    342A  ARG*     5.6     0.5    +      -       -      -
    437A  GLY*     3.2     1.0    -      -       -      -
    438A  GLU*     1.3    81.1    -      -       +      +
    440A  LEU*     1.3    55.5    +      -       -      +
    442A  GLY*     3.6     2.5    +      -       -      -
    443A  MET*     2.9    38.8    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 440 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    131A  LEU*     5.8    10.1    -      -       +      +
    141A  ILE*     3.2    35.2    -      -       +      -
    145A  VAL*     4.0    15.3    -      -       +      -
    178A  ILE*     4.2     3.8    -      -       +      -
    181A  ILE*     4.1    25.8    -      -       +      -
    437A  GLY*     3.5     9.9    +      -       -      +
    439A  ALA*     1.3    75.3    -      -       -      +
    441A  ALA*     1.3    69.1    +      -       -      +
    442A  GLY      3.1     1.1    -      -       -      -
    443A  MET*     3.1     9.4    +      -       +      +
    444A  GLU*     2.9    44.5    +      -       -      +
   1493A  HEM      3.7    33.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 441 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  THR*     4.6     4.5    -      -       -      +
    428A  PHE*     3.4    29.2    -      -       +      -
    437A  GLY      2.7    23.6    +      -       -      +
    440A  LEU*     1.3    75.1    -      -       -      +
    442A  GLY*     1.3    56.9    +      -       -      +
    444A  GLU*     3.1     3.6    +      -       -      +
    445A  LEU*     2.9    34.1    +      -       -      +
   1493A  HEM      3.4    34.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 442 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    342A  ARG*     4.2    15.6    +      -       -      -
    352A  VAL*     5.8     1.8    -      -       -      +
    356A  GLN*     5.4     2.0    -      -       -      -
    428A  PHE*     4.6     3.0    -      -       -      -
    438A  GLU      3.1    11.3    +      -       -      -
    439A  ALA*     3.6     5.8    -      -       -      -
    440A  LEU      3.1     0.4    -      -       -      -
    441A  ALA*     1.3    76.9    -      -       -      +
    443A  MET*     1.3    62.0    +      -       -      +
    445A  LEU*     4.1     8.9    -      -       -      +
    446A  PHE*     3.2    25.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MET 443 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    141A  ILE*     4.0    23.6    -      -       +      +
    142A  GLU*     3.6    44.4    -      -       +      +
    145A  VAL*     4.1    12.6    -      -       +      -
    339A  MET*     4.0    33.1    -      -       +      +
    439A  ALA*     2.9    25.7    +      -       +      +
    440A  LEU*     3.1    13.0    +      -       -      +
    442A  GLY*     1.3    73.7    -      -       -      +
    444A  GLU*     1.3    57.1    +      -       -      +
    447A  LEU*     2.8    38.9    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 444 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  VAL*     3.7    28.9    -      -       +      -
    174A  PRO*     3.1    39.4    -      -       -      +
    177A  VAL*     3.6    16.4    -      -       -      +
    178A  ILE*     5.0     0.9    -      -       -      +
    298A  GLY      5.1     0.2    -      -       -      +
    302A  THR*     3.5    16.4    -      -       +      +
    306A  LEU*     4.8     0.9    -      -       -      -
    440A  LEU*     2.9    49.2    +      -       -      +
    441A  ALA      3.9     2.5    -      -       -      +
    443A  MET*     1.3    68.5    -      -       -      +
    445A  LEU*     1.3    67.6    +      -       -      +
    448A  PHE*     2.9    45.5    +      -       +      +
   1493A  HEM      4.3     2.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 445 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    302A  THR*     4.3     7.0    -      -       +      +
    305A  THR*     3.5    34.8    -      -       +      +
    306A  LEU*     3.8    26.2    -      -       +      +
    352A  VAL*     4.0    19.3    -      -       +      -
    356A  GLN*     3.5    35.4    -      -       +      +
    441A  ALA*     2.9    23.2    +      -       +      +
    442A  GLY*     4.1     4.9    -      -       -      +
    444A  GLU*     1.3    76.8    -      -       -      +
    446A  PHE*     1.3    58.2    +      -       -      +
    449A  LEU*     3.0    42.7    +      -       +      +
   1493A  HEM      4.1    12.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 446 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    331A  ILE*     5.2     1.1    -      -       +      -
    337A  PRO*     5.1     0.9    -      -       +      -
    338A  CYS      3.7    24.7    -      -       -      -
    339A  MET*     4.2    13.0    -      -       +      -
    341A  ASP*     4.3     2.2    -      -       +      -
    342A  ARG*     3.7    46.9    -      -       +      +
    345A  MET*     4.1    14.1    -      -       +      -
    348A  THR*     3.4    35.0    -      -       +      -
    349A  ASP*     5.2     1.8    -      -       -      -
    352A  VAL*     4.8    15.5    -      -       +      -
    442A  GLY      3.2    18.9    +      -       -      +
    443A  MET      4.1     0.7    -      -       -      +
    444A  GLU      3.1     0.4    -      -       -      -
    445A  LEU*     1.3    74.5    -      -       +      +
    447A  LEU*     1.3    75.5    -      -       +      +
    449A  LEU*     4.3     1.1    -      -       -      +
    450A  THR*     2.7    50.2    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 447 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    142A  GLU*     4.5    15.7    -      -       +      +
    145A  VAL*     3.9    30.3    -      -       +      -
    146A  GLN*     4.5    15.7    -      -       +      +
    149A  ALA*     4.8     7.2    -      -       +      -
    337A  PRO*     3.9     8.3    -      -       +      +
    338A  CYS*     3.6    37.0    -      -       -      +
    339A  MET*     4.0    13.9    -      -       -      -
    443A  MET*     2.8    21.0    +      -       +      +
    446A  PHE*     1.3    89.6    -      -       +      +
    448A  PHE*     1.3    65.8    +      -       +      +
    450A  THR*     3.0    15.4    +      -       -      -
    451A  SER*     3.0    18.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 448 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    145A  VAL*     3.3    37.9    -      -       +      -
    148A  GLU*     4.2     2.7    -      -       +      -
    149A  ALA*     3.7    24.7    -      -       +      -
    152A  LEU*     3.8    19.1    -      -       +      -
    170A  LEU*     6.1     0.2    -      -       +      -
    173A  ALA*     3.6    25.8    -      -       +      -
    174A  PRO      4.3     2.2    -      -       -      -
    177A  VAL*     4.2    14.8    -      -       +      -
    306A  LEU*     3.7    30.3    -      -       +      -
    444A  GLU*     2.9    42.0    +      -       +      +
    447A  LEU*     1.3    75.9    -      -       -      +
    449A  LEU*     1.3    63.5    +      -       -      +
    451A  SER*     3.2     5.8    +      -       -      -
    452A  ILE*     2.9    30.6    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 449 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    306A  LEU*     3.9    18.6    -      -       +      +
    309A  ALA*     3.7    28.5    -      -       +      -
    310A  LEU*     3.7    30.3    -      -       +      -
    313A  LEU*     4.9     4.9    -      -       +      -
    351A  VAL*     5.9     4.0    -      -       +      -
    352A  VAL*     4.5    21.5    -      -       +      -
    355A  VAL*     5.7     1.6    -      -       +      -
    445A  LEU*     3.0    36.5    +      -       +      +
    446A  PHE*     4.3     1.3    -      -       -      +
    447A  LEU      3.3     0.2    -      -       -      -
    448A  PHE*     1.3    79.0    -      -       -      +
    450A  THR*     1.3    58.1    +      -       +      +
    452A  ILE*     3.2    10.7    +      -       +      +
    453A  LEU*     2.9    42.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 450 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    323A  VAL*     5.7     0.7    -      -       +      -
    327A  ILE*     4.0    27.5    -      -       +      +
    331A  ILE*     5.1     1.8    -      -       -      -
    337A  PRO*     3.6    23.5    -      -       -      +
    345A  MET*     4.5     2.2    -      -       +      -
    348A  THR*     3.9    14.8    -      -       +      -
    446A  PHE*     2.7    50.5    +      -       +      +
    447A  LEU*     3.0     9.9    +      -       -      -
    449A  LEU*     1.3    73.2    -      -       +      +
    451A  SER*     1.3    55.3    +      -       -      +
    453A  LEU*     3.0     2.2    +      -       +      +
    454A  GLN*     2.7    37.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 451 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    149A  ALA*     3.8    20.5    -      -       -      +
    152A  LEU*     6.1     0.9    -      -       -      -
    153A  VAL*     4.0    19.5    -      -       -      +
    337A  PRO*     4.0    16.7    -      -       -      +
    447A  LEU*     3.0    19.1    +      -       -      +
    448A  PHE*     3.4     7.0    -      -       -      -
    450A  THR*     1.3    76.5    +      -       -      +
    452A  ILE*     1.3    66.1    +      -       -      +
    454A  GLN*     3.0    20.8    +      -       -      -
    455A  ASN*     3.1    18.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 452 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    152A  LEU*     4.8     8.3    -      -       +      -
    153A  VAL*     4.7     3.6    -      -       +      -
    156A  LEU*     4.1    16.2    -      -       +      -
    170A  LEU*     4.4    22.7    -      -       +      -
    306A  LEU*     5.5     0.2    -      -       +      -
    310A  LEU*     4.5    14.1    -      -       +      -
    448A  PHE*     2.9    31.5    +      -       +      +
    449A  LEU*     3.5    20.9    -      -       +      +
    451A  SER*     1.3    78.7    -      -       -      +
    453A  LEU*     1.3    66.2    +      -       +      +
    454A  GLN      3.2     0.5    +      -       -      -
    455A  ASN      3.4     2.1    +      -       -      -
    456A  PHE*     3.3    29.2    +      -       +      +
    458A  LEU*     4.4     9.9    -      -       +      -
    487A  PHE*     3.8    29.4    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 453 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    310A  LEU*     5.7     0.4    -      -       +      -
    313A  LEU*     3.9    28.3    -      -       +      -
    320A  THR*     3.9    28.7    -      -       +      +
    323A  VAL*     3.9    21.5    -      -       +      -
    324A  GLN*     3.1    40.3    +      -       +      +
    327A  ILE*     3.5    20.7    -      -       +      +
    449A  LEU*     2.9    31.4    +      -       +      +
    450A  THR*     3.0     2.2    +      -       +      +
    452A  ILE*     1.3    82.6    -      -       +      +
    454A  GLN*     1.3    59.5    +      -       -      +
    455A  ASN      3.3     0.2    -      -       -      -
    456A  PHE      3.8     3.1    -      -       -      +
    458A  LEU*     4.3    15.9    -      -       +      -
    490A  ILE*     3.8     2.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 454 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    327A  ILE*     4.0    21.1    -      -       +      -
    331A  ILE*     3.6    12.3    -      -       -      +
    332A  GLY      2.8    30.0    +      -       -      +
    333A  ARG*     4.2    18.1    -      -       -      +
    335A  ARG      3.0    24.9    +      -       -      +
    336A  SER*     5.2     0.2    -      -       -      -
    337A  PRO*     3.7    21.2    -      -       +      +
    450A  THR      2.7    13.2    +      -       -      +
    451A  SER*     3.0     8.7    +      -       -      +
    453A  LEU*     1.3    76.1    -      -       -      +
    455A  ASN*     1.3    75.9    +      -       -      +
    456A  PHE      3.6     0.2    -      -       -      -
    490A  ILE*     3.4    20.6    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 455 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    153A  VAL*     3.8    16.6    -      -       +      +
    157A  ARG*     2.9    30.3    +      -       -      +
    451A  SER*     3.1    10.9    +      -       -      +
    454A  GLN*     1.3   107.0    +      -       -      +
    456A  PHE*     1.3    86.5    +      -       +      +
    489A  PRO*     3.4     3.8    -      -       -      +
    490A  ILE*     3.3    25.5    +      -       -      +
----------------------------------------------------------
 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