• USA Home
  • H9395 - α-Hemolysin from Staphylococcus aureus

EMAIL THIS PAGE TO A FRIEND
H9395 Sigma

α-Hemolysin from Staphylococcus aureus

lyophilized powder, Protein ~60 % by Lowry, ≥10,000 units/mg protein

Synonym: α-Toxin

Purchase

Description

Packaging

Package size based on protein content

Unit Definition

One hemolytic unit will cause 50% lysis of a 1% suspension of rabbit red blood cells in phosphate buffered saline, pH 7.0, containing 1% bovine serum albumin after 30 min at 37 °C followed by refrigeration for 30 min at 4 °C.

Application

α-Hemolysin was used in a study to test the efflux pump and haemolysin activity of Escherichia coli of dairy origin. It was also used to test its adaptation to benzalkonium chloride and the effect of ciprofloxacin on biofilm formation.

Biochem/physiol Actions

α-Hemolysin is a 33 kDa extracellular protein secreted by most strains of pathogenic Staphylococcus aureus. It is selectively hemolytic and has a marked preference for rabbit red blood cells. It induces dermonecrosis, spastic muscle paralysis, and it is lethal for laboratory animals. The toxin must be in the monomeric form to initially bind to a membrane and specific receptors are not required for binding. Upon binding to biological membranes and/or artificial membranes, self-oligomerization occurs, resulting in ring structures (hexameric aggregates) believed to represent transmembrane pores, which are permeable to ions and small metabolites.
It is thought that α-hemolysin stimulates cellular phospholipases and induces a Ca2+ influx that can result in membrane disruption, leakage of cytoplasmic components, impaired membrane permeability, and osmotic lysis of the cells.

Price and Availability


All labs need water

Biomedical Applications
Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles

Articles

Cellular Derived Blood Proteins and Enzymes

Cell damage is induced by reactive oxygen species (ROS). ROS are either free radicals, reactive anions containing oxygen atoms, or molecules containing oxygen atoms that can either produce free radic...
BioFiles 2006, 1.5, 4.
Keywords: Aerobic, Alzheimer Disease, Bacterial conjugations, Biofiles, Cancer, Metabolism, Oxidations, Parkinson Disease, Reductions, Respiration

Related Content

Enzyme Explorer Key Resources: Lysing Enzymes

Cell Lysis Enzymes – How to tear down the Wall Enzymes provide a non-mechanical method for cell lysis and protoplast preparation. It may seem like a simple process to throw in your enzyme, stick your...
Keywords: Amplification, Biochemistry, Cell culture, Cell disruption, Culture media, Digestions, Enzymology, Metabolites, Molecular biology, PAGE, Purification, Sequencing

Peer-Reviewed Papers
15

References

Related Products

related product

Product #

Description

Add to Cart

08168 Timestrip Plus 8 °C

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?