1TS3

H135A MUTANT OF TOXIC SHOCK SYNDROME TOXIN-1 FROM S. AUREUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å

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:  

  • 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 lethali ...

    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.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TOXIC SHOCK SYNDROME TOXIN-1
A, B, C
194Staphylococcus aureusMutation(s): 1 
Gene Names: tst
Find proteins for P06886 (Staphylococcus aureus)
Go to UniProtKB:  P06886
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 108.450α = 90.00
b = 176.650β = 90.00
c = 97.140γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
XENGENdata scaling
XENGENdata reduction
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-12-16
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance