Contacts of the helix formed by residues 554 - 565 (chain A) in PDB entry 6X70


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 554 (chain A).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    548A  ASP*     4.8     5.2    -      -       -      -
    553A  VAL*     1.3    73.1    -      -       -      +
    555A  HIS*     1.3    57.3    +      -       -      -
    556A  SER      3.1     3.3    +      -       -      -
    557A  THR      3.3     0.7    +      -       -      -
    558A  LEU*     2.7    37.5    +      -       -      +
     10P    T      2.8    27.9    +      -       -      -
     11P    A      4.1    10.8    -      -       -      -
    801P   MG      4.6     0.2    -      -       -      -
----------------------------------------------------------
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Residues in contact with HIS 555 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    548A  ASP*     5.7     1.5    +      -       -      -
    554A  GLY*     1.3    70.9    -      -       -      -
    556A  SER*     1.3    77.2    +      -       -      +
    558A  LEU*     3.4     9.6    -      -       -      +
    559A  SER*     2.8    38.6    +      -       -      +
      9P    G      4.9    13.6    +      -       +      -
     10P    T      3.3    23.3    +      -       +      -
----------------------------------------------------------
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Residues in contact with SER 556 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    555A  HIS*     1.3    94.3    -      -       -      +
    557A  THR*     1.3    67.4    +      -       -      +
    559A  SER*     3.3     7.1    +      -       -      -
    560A  ARG*     3.2    35.2    +      -       -      +
      9P    G      3.5    30.1    +      -       -      -
     10P    T      3.1    13.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 557 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    552A  GLY      3.9     2.3    +      -       -      -
    553A  VAL*     3.9    26.7    -      -       +      -
    556A  SER*     1.3    70.4    +      -       -      +
    558A  LEU*     1.3    67.2    +      -       -      +
    560A  ARG*     3.1     9.4    +      -       -      +
    561A  LEU*     2.9    26.3    +      -       +      +
    587A  VAL*     3.5    25.7    -      -       +      +
    591A  LEU*     3.6    28.7    -      -       +      +
    595A  ILE*     4.6     0.9    -      -       +      -
      9P    G      3.9     3.8    +      -       -      -
     10P    T      2.6    26.8    +      -       -      -
----------------------------------------------------------
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Residues in contact with LEU 558 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    547A  LEU*     3.5    34.8    -      -       +      +
    548A  ASP*     4.3    19.7    -      -       +      +
    553A  VAL*     3.6     9.7    -      -       +      +
    554A  GLY      2.7    23.7    +      -       -      +
    555A  HIS*     3.4    10.8    -      -       -      +
    557A  THR*     1.3    72.2    -      -       -      +
    559A  SER*     1.3    67.8    +      -       -      +
    561A  LEU*     3.1     6.9    +      -       -      +
    562A  GLU*     3.0    54.3    +      -       +      +
----------------------------------------------------------
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Residues in contact with SER 559 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    555A  HIS*     2.8    29.2    +      -       -      +
    556A  SER*     3.7     7.1    -      -       -      -
    558A  LEU*     1.3    77.9    -      -       -      +
    560A  ARG*     1.3    63.2    +      -       -      +
    562A  GLU*     3.3    14.3    +      -       -      +
    563A  SER*     3.2    22.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with ARG 560 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    556A  SER*     3.2    24.9    +      -       -      +
    557A  THR*     3.1     9.7    +      -       -      +
    559A  SER*     1.3    74.1    -      -       -      +
    561A  LEU*     1.3    63.6    +      -       -      +
    563A  SER*     3.5     5.2    +      -       -      +
    564A  THR*     2.6    33.3    +      -       -      -
    586A  SER*     3.1    34.8    +      -       -      +
    587A  VAL*     3.9    23.2    +      -       +      +
----------------------------------------------------------
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Residues in contact with LEU 561 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    547A  LEU*     4.0    28.7    -      -       +      +
    550A  LEU*     5.8     0.4    -      -       +      -
    553A  VAL*     4.2    21.8    -      -       +      -
    557A  THR*     2.9    18.3    +      -       +      +
    558A  LEU*     3.5     6.7    -      -       -      +
    560A  ARG*     1.3    76.2    -      -       -      +
    562A  GLU*     1.3    58.1    +      -       -      +
    565A  PHE*     3.0    48.5    +      -       +      +
    568A  PRO*     3.9     3.1    -      -       -      +
    574A  LEU*     4.2    13.0    -      -       +      -
    583A  LEU*     3.6    30.1    -      -       +      -
    586A  SER*     4.2     2.5    -      -       -      +
    587A  VAL*     3.8    15.0    -      -       +      -
    595A  ILE*     4.3    12.8    -      -       +      -
----------------------------------------------------------
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Residues in contact with GLU 562 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    547A  LEU*     5.2     1.1    -      -       +      -
    558A  LEU*     3.0    48.5    +      -       +      +
    559A  SER*     3.6    12.3    +      -       -      +
    561A  LEU*     1.3    74.6    -      -       -      +
    563A  SER*     1.3    66.9    +      -       -      +
    566A  ASP*     2.9     7.4    +      -       -      -
    567A  SER*     2.8    50.5    +      -       -      +
    568A  PRO*     4.1    12.6    -      -       +      +
    569A  HIS*     5.7     3.2    +      -       -      -
----------------------------------------------------------
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Residues in contact with SER 563 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    559A  SER      3.2    12.6    +      -       -      -
    560A  ARG*     3.9     5.2    -      -       -      -
    562A  GLU*     1.3    79.5    -      -       -      +
    564A  THR*     1.3    65.1    +      -       -      +
    566A  ASP*     3.9     4.9    +      -       -      -
----------------------------------------------------------
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Residues in contact with THR 564 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    560A  ARG*     2.6    23.0    +      -       -      +
    561A  LEU      3.9     2.5    -      -       -      -
    563A  SER*     1.3    80.4    -      -       -      +
    565A  PHE*     1.3    81.3    +      -       +      +
    566A  ASP      3.5     0.7    +      -       -      -
    582A  ALA*     4.3    10.1    -      -       +      +
    586A  SER*     2.7    31.0    +      -       -      -
----------------------------------------------------------
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Residues in contact with PHE 565 (chain A). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    561A  LEU*     3.0    44.2    +      -       +      +
    564A  THR*     1.3    93.6    -      -       +      +
    566A  ASP*     1.3    69.4    +      -       -      +
    567A  SER      3.2     2.8    +      -       -      -
    568A  PRO*     3.3    14.4    -      -       +      +
    574A  LEU*     3.7    19.7    -      -       +      -
    577A  ARG*     2.9    37.3    +      -       +      -
    578A  TYR*     3.7    32.8    -      -       +      -
    579A  THR      4.4     0.7    -      -       -      -
    582A  ALA*     4.1    14.4    -      -       +      -
    583A  LEU*     3.9    31.6    -      -       +      -
    586A  SER*     4.7     0.7    -      -       -      -
----------------------------------------------------------
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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