S5265
Streptolysin O from Streptococcus pyogenes
lyophilized powder, Protein ~3 % by Lowry, 25,000-50,000 U/vial
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form
lyophilized powder
Quality Level
specific activity
25,000-50,000 U/vial
mol wt
native 69 kDa
composition
Protein, ~3% Lowry
storage condition
(Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place.)
color
white
solubility
H2O: soluble 1 mg/mL
antibiotic activity spectrum
neoplastics
Mode of action
cell membrane | interferes
storage temp.
2-8°C
Gene Information
Streptococcus pyogenes MGAS8232 ... slo(993428)
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Application
Streptolysin O is a toxin secreted by Streptococcus pyogenes and is a prototype member of poreforming bacterial cytolysins. It is used permeabilize cell membranes to permit cellular uptake of large or charged molecules. It is used to study macromolecule delivery. It is a potential anticancer agent and is used to study suicide cancer gene therapy.
Used to create holes (reversible pores) in cholesterol-enriched plasma membranes of eukaryotic cells allowing selective permeabilization with molecules such as proteins (up to 100 kDa) and siRNAs.
Permeabilizes membranes to permit cellular uptake of large or charged molecules.
Biochem/physiol Actions
Streptolysin O possesses a single polypeptide chain with a molecular weight of f62 kDa. Streptolysin O binds to membrane cholesterol and oligomerizes to create a ring structure that consists of 45 to 50 units. The ring structure inserts into the membrane to make a large pore (25 to 30 nm), which DNA, RNA, peptides and proteins may pass. It is thiol-activated. It is inhibited by allicin, an active component of garlic.
Thiol-activated toxin that permeabilizes animal cell membranes. The protein binds as a monomer to membrane cholesterol and subsequently polymerizes into large arc- and ring-shaped structures surrounding pores of >12 nm.
Packaging
25KU
Unit Definition
One unit will cause 50% lysis of 2% red blood cell suspensions in phosphate buffered saline, pH 7.4, after incubation at 37 °C for 30 min.
Physical form
Lyophilized powder containing Tris buffer salts, sodium azide, PMSF, and EDTA.
Other Notes
Keep container tightly closed in a dry and well-ventilated place. Keep in a dry place
Signal Word
Danger
Hazard Statements
Hazard Classifications
Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Skin Irrit. 2
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
Regulatory Information
高风险级别生物产品--毒素类产品
Certificates of Analysis (COA)
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Chen Chen et al.
Nanoscale, 10(11), 5154-5162 (2018-03-02)
Exosomes are small membrane vesicles secreted by a wide variety of cells. Studies have demonstrated that exosomal miRNAs can influence the biological processes of recipient cells. Therefore, direct imaging and tracking of exosomal miRNAs in living recipient cells are essential
Neurotransmitter interactions related to central dopamine neurons.
K G Lloyd
Essays in neurochemistry and neuropharmacology, 3, 129-207 (1978-01-01)
Wan Seok Yang et al.
Molecular cancer therapeutics, 5(6), 1610-1619 (2006-07-05)
We cloned the streptolysin O gene from the Streptococcus pyogenes genome and tested the possibility of using it as an anticancer reagent. Transient transfection of the streptolysin O gene efficiently killed 293T cells after 12 hours of transfection as determined
John Popovich et al.
Frontiers in bioengineering and biotechnology, 8, 527-527 (2020-06-26)
Pore-forming and hemolytic toxins are bacterial cytotoxic proteins required for virulence in many pathogens, including staphylococci and streptococci, and are notably associated with clinical manifestations of disease. Inspired by adsorption properties of naturally occurring aluminosilicates, we engineered inexpensive, laboratory-synthesized, aluminosilicate
Mohsen Arzanlou et al.
Journal of medical microbiology, 59(Pt 9), 1044-1049 (2010-06-12)
Streptolysin O (SLO) is a potent cytolytic toxin produced by almost all strains of group A streptococci and is considered an important virulence factor for this organism. In this study we investigated the effect of allicin and aqueous garlic extracts
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