1AW7

Q136A MUTANT OF TOXIC SHOCK SYNDROME TOXIN-1 FROM S. AUREUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Work: 0.176 
  • R-Value Observed: 0.176 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structures of five mutants of toxic shock syndrome toxin-1 with reduced biological activity.

Earhart, C.A.Mitchell, D.T.Murray, D.L.Pinheiro, D.M.Matsumura, M.Schlievert, P.M.Ohlendorf, D.H.

(1998) Biochemistry 37: 7194-7202

  • DOI: 10.1021/bi9721896
  • Primary Citation of Related Structures:  
    1TS5, 1TS4, 1TS3, 1TS2, 1AW7

  • PubMed Abstract: 
  • The three-dimensional structures of five mutants of toxic shock syndrome toxin-1 (TSST-1) have been determined. These mutations are in the long central alpha helix and are useful in mapping portions of TSST-1 involved in superantigenicity and lethality ...

    The three-dimensional structures of five mutants of toxic shock syndrome toxin-1 (TSST-1) have been determined. These mutations are in the long central alpha helix and are useful in mapping portions of TSST-1 involved in superantigenicity and lethality. The T128A, H135A, Q139K, and I140T mutations appear to reduce superantigenicity by altering the properties of the T-cell receptor interaction surface. The Q136A mutation is at a largely buried site and causes a dramatic change in the conformation of the beta7-beta9 loop which covers the back of the central alpha helix. As this mutation has the unique ability to reduce the toxin's lethality in rabbits while retaining its superantigenicity, it raises the possibility that this rear loop mediates the ability of TSST-1 to induce lethality and suggests a route for producing nonlethal toxins for therapeutic development.


    Related Citations: 
    • Refined Structures of Three Crystal Forms of Toxic Shock Syndrome Toxin-1 and of a Tetramutant with Reduced Activity
      Prasad, G.S., Radhakrishnan, R., Mitchell, D.T., Earhart, C.A., Dinges, M.M., Cook, W.J., Schlievert, P.M., Ohlendorf, D.H.
      (1997) Protein Sci 6: 1220
    • Structure of Toxic Shock Syndrome Toxin 1
      Prasad, G.S., Earhart, C.A., Murray, D.L., Novick, R.P., Schlievert, P.M., Ohlendorf, D.H.
      (1993) Biochemistry 32: 13761

    Organizational Affiliation

    Department of Biochemistry, Medical School, University of Minnesota, Minneapolis 55455, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TOXIC SHOCK SYNDROME TOXIN-1ABCD194Staphylococcus aureusMutation(s): 1 
Gene Names: tst
Find proteins for P06886 (Staphylococcus aureus)
Explore P06886 
Go to UniProtKB:  P06886
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Work: 0.176 
  • R-Value Observed: 0.176 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.63α = 88.5
b = 99.28β = 93.3
c = 41.33γ = 91.1
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
XENGENdata reduction
XENGENdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-28
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance