Contacts of the strand formed by residues 447 - 451 (chain B) in PDB entry 1AX4


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 LEU 447 (chain B).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     34B  TYR*     4.5     3.6    -      -       +      -
    369B  ASP      4.0     3.5    -      -       -      +
    370B  GLN*     2.6    33.4    +      -       -      +
    371B  PHE*     3.8    19.8    -      -       +      +
    374B  GLN*     3.5    50.5    -      -       +      +
    375B  ALA*     4.0     7.2    -      -       +      +
    378B  ASN*     4.3    16.2    -      -       +      +
    446B  GLY*     1.3    78.7    -      -       -      +
    448B  GLU*     1.3    59.6    +      -       -      +
    463B  LEU*     4.0    19.3    -      -       +      -
    464B  LYS      3.5    20.4    -      -       -      +
    465B  PRO*     4.0     7.6    -      -       +      -
    466B  ILE*     3.6    10.2    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 448 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371B  PHE*     5.6     0.2    -      -       -      -
    447B  LEU*     1.3    72.7    -      -       -      +
    449B  PHE*     1.3    63.6    +      -       -      +
    463B  LEU*     3.2     9.6    -      -       -      +
    464B  LYS*     2.6    63.9    +      -       +      +
    465B  PRO      4.7     2.8    -      -       -      +
    466B  ILE*     3.7    27.9    -      -       +      +
----------------------------------------------------------
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Residues in contact with PHE 449 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    371B  PHE*     3.7    17.5    -      +       -      -
    394B  PHE*     3.8     8.1    -      +       -      -
    398B  ARG*     4.9     6.3    -      -       -      -
    448B  GLU*     1.3    80.4    -      -       -      +
    450B  GLU*     1.3    59.1    +      -       -      +
    451B  TYR*     3.4    15.3    -      -       -      +
    452B  GLU*     3.4    39.3    -      -       +      +
    457B  ARG*     2.9    46.7    -      -       -      -
    461B  ALA*     3.4    24.5    -      -       +      -
    462B  ARG      3.8     0.9    -      -       -      -
    463B  LEU*     3.5    13.7    -      -       +      +
    464B  LYS*     4.6     5.9    -      -       -      +
----------------------------------------------------------
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Residues in contact with GLU 450 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     33B  GLY*     4.6     1.6    -      -       -      -
     34B  TYR*     5.9     0.2    -      -       -      -
    449B  PHE*     1.3    74.6    -      -       -      +
    451B  TYR*     1.3    60.1    +      -       +      +
    462B  ARG*     2.6    54.9    +      -       +      +
    463B  LEU*     3.9    14.7    -      -       -      +
    464B  LYS*     4.6    14.5    -      -       +      +
----------------------------------------------------------
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Residues in contact with TYR 451 (chain B). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    286A  THR*     4.9    12.5    -      -       -      +
    449B  PHE*     3.4     2.9    -      -       -      -
    450B  GLU*     1.3    81.7    -      -       +      +
    452B  GLU*     1.3    65.6    +      -       -      +
    453B  PRO*     3.0    47.8    -      -       +      +
    454B  PRO*     4.7     3.0    -      -       +      +
    460B  THR*     3.6    17.4    +      -       -      -
    461B  ALA*     3.4     5.2    -      -       -      +
    462B  ARG*     2.8    55.3    +      -       +      +
----------------------------------------------------------
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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