H9395
α-Hemolysin from Staphylococcus aureus
lyophilized powder, Protein ~60 % by Lowry, ≥10,000 units/mg protein
Synonym(s):
α-Toxin
Sign Into View Organizational & Contract Pricing
All Photos(2)
About This Item
Recommended Products
biological source
Staphylococcus aureus
Quality Level
form
lyophilized powder
specific activity
≥10,000 units/mg protein
contains
sodium citrate buffer as balance
composition
Protein, ~60% Lowry
solubility
H2O: soluble 0.49-0.51 mg/mL
UniProt accession no.
storage temp.
2-8°C
Gene Information
Staphylococcus aureus ... SAOUHSC_01121(3920722)
General description
α-Hemolysin, a pore-forming cytotoxin is an extracellular protein secreted by most strains of pathogenic Staphylococcus aureus. It is secreted as a water-soluble monomer and is a small β-barrel protein.
Application
α-Hemolysin from Staphylococcus aureus has been used:
- as a component of electrolyte solution for testing pore formation in lipid bilayer using electrophysiological measurements
- to test its osteogenesis suppressive effects in bone marrow stromal cells (BMSCs)
- in the preparation of α-hemolysin molecular imprinted polymer (MIP) for Biacore and surface plasmon resonance
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 selectively hemolytic and the monomeric form binds 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 has a marked preference for rabbit red blood cells. α-hemolysin stimulates cellular phospholipases and induces a Ca2+ influx. It leads to membrane disruption of the endothelial barrier and leakage of cytoplasmic components and osmotic lysis of the cells. α-hemolysin is implicated in the pathogenesis of sepsis.
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.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 2
target_organs
Lungs,Blood
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Customers Also Viewed
François Vandenesch et al.
Frontiers in cellular and infection microbiology, 2, 12-12 (2012-08-25)
One key aspect of the virulence of Staphylococcus aureus lies in its ability to target the host cell membrane with a large number of membrane-damaging toxins and peptides. In this review, we describe the hemolysins, the bi-component leukocidins (which include
D Fink et al.
Cellular signalling, 1(4), 387-393 (1989-01-01)
Staphylococcal alpha-toxin at subcytotoxic concentrations stimulated phosphatidylinositol turnover and arachidonic acid release in undifferentiated cultures of pheochromocytoma PC12 cells. Stimulation of phospholipase A2 but not C was dependent on extracellular calcium. Addition of staphylococcal alpha-toxin to PC12 cells caused a
Muhmmad Omar-Hmeadi et al.
Traffic (Copenhagen, Denmark), 19(6), 436-445 (2018-03-16)
Phosphoinositides (PtdIns) play important roles in exocytosis and are thought to regulate secretory granule docking by co-clustering with the SNARE protein syntaxin to form a docking receptor in the plasma membrane. Here we tested this idea by high-resolution total internal
Gregory J Digby et al.
The Journal of physiology, 586(14), 3325-3335 (2008-05-24)
Signalling by heterotrimeric G proteins is often isoform-specific, meaning certain effectors are regulated exclusively by one family of heterotrimers. For example, in excitable cells inwardly rectifying potassium (GIRK) channels are activated by G betagamma dimers derived specifically from G(i/o) heterotrimers.
L N Silva et al.
Scientific reports, 7(1), 2823-2823 (2017-06-08)
Staphylococcus aureus is an opportunistic pathogen related to a variety of life-threatening infections but for which antimicrobial resistance is liming the treatment options. We report here that myricetin, but not its glycosylated form, can remarkably decrease the production of several
Related Content
Cell lysis and protein extraction methods overview various techniques, from detergent solubilization to mechanical disruption, supporting research needs.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service