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일반 설명
Streptolysin O (SLO) is an immunogenic, oxygen-labile toxin, hemolytic exotoxin which is reversibly activated by dithiothreitol. [1] It is released into the extracellular medium along with other toxins, including streptolysin S, during the growth of most strains of group A and many strains of groups C and G Streptococci. [1,2] SLO and Streptolysin S differ from each other in that SLO is immunogenic and oxygen-labile while Streptolysin S is oxygen-stable, nonimmunogenic and only active when associated with a carrier protein.[3] The hemolytic activity of SLO is mediated by formation of multimeric nanopores in cholesterol containing lipid membranes.
SLO may be used for cell permeabilization or hemolysis. The susceptibility of hemolysis by SLO varies significantly for erythrocytes from different animal species.[1] Permeabilization of cells using SLO has been performed on multiple cell types and for various applications. For instance it has been used to introduce antisense oligonucleotides into cultured eukaryotic cells;[3] to investigate the effect of guanine nucleotide analogues on phosphatidylinositol metabolism and protein kinase C (PKC) activation in live human T lymphocytes;[4] to monitor cholesterol oxidation within a membrane lipid bilayer; [5] and to label proteins inside living cells using external fluorophores.[6]
SLO may be used for cell permeabilization or hemolysis. The susceptibility of hemolysis by SLO varies significantly for erythrocytes from different animal species.[1] Permeabilization of cells using SLO has been performed on multiple cell types and for various applications. For instance it has been used to introduce antisense oligonucleotides into cultured eukaryotic cells;[3] to investigate the effect of guanine nucleotide analogues on phosphatidylinositol metabolism and protein kinase C (PKC) activation in live human T lymphocytes;[4] to monitor cholesterol oxidation within a membrane lipid bilayer; [5] and to label proteins inside living cells using external fluorophores.[6]
애플리케이션
Permeabilizes membranes to permit cellular uptake of large or charged molecules.
생화학적/생리학적 작용
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.
This product is produced by recombinant expression in Escherichia coli and contains the complete native protein sequence of SLO (Uniport ID: P0DF96 aa 34-571) without any added purification tags and has calculated molecular weight of 60,144 Dalton. The material is lyophilized from a solution containing 20 mM Sodium Hepes pH 7.5, 150 mM Sodium Chloride and 2 mM EDTA.
단위 정의
Lyophilized powder containing Hepes buffer salts and EDTA.
One unit will cause 50% lysis of 50 ul of a 2% human red blood cell suspension in phosphate buffered saline, pH 7.4, at 37 °C for 30 minutes.
신호어
Danger
유해 및 위험 성명서
Hazard Classifications
Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral
Storage Class Code
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
이미 열람한 고객
Production, purification, and assay of streptolysin O.
J E Alouf et al.
Methods in enzymology, 165, 52-59 (1988-01-01)
Labeling Proteins Inside Living Cells Using External Fluorophores for Fluorescence Microscopy.
Kai Wen Teng et al.
eLife, 6 (2017-02-02)
J D Graves et al.
The Biochemical journal, 265(2), 407-413 (1990-01-15)
A method of membrane permeabilization of T lymphocytes with the bacterial cytotoxin streptolysin O has allowed the effect of guanine nucleotide analogues on phosphatidylinositol metabolism and protein kinase C (PKC) activation to be investigated. The data demonstrate that, in permeabilized
E L Barry et al.
BioTechniques, 15(6), 1016-1018 (1993-12-01)
Cellular uptake of antisense oligonucleotides is critical to their ability to inhibit gene expression. In the present study, phosphodiester oligodeoxynucleotides were introduced into cells during brief permeabilization with the pore-forming agent streptolysin O. The extent of antisense inhibition was dependent
Atsushi Shoji et al.
Journal of pharmaceutical and biomedical analysis, 128, 455-461 (2016-07-01)
Streptolysin O (SLO), which recognizes sterols and forms nanopores in lipid membranes, is proposed as a sensing element for monitoring cholesterol oxidation in a lipid bilayer. The structural requirements of eight sterols for forming nanopores by SLO confirmed that a
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