Streptolysin O |cas 98072-47-0| DC Chemicals

Cas No.:	98072-47-0
Chemical Name:	Hemolysins O,Streptococcus group A
Synonyms:	Hemolysins O,Streptococcus group A;STREPTOLYSIN O
Purity:	>98%
Sotrage:	2 years -20°C Powder, 2 weeks 4°C in DMSO, 6 months -80°C in DMSO

Description:	Streptolysin O, a group A streptococcal toxin, is a well-characterized oxygen-labile prototype of a cholesterol-binding bacterial exotoxin. Streptolysin O causes both lysis of cells and cardiotoxicity. Streptolysin O is widely used for the controlled permeabilization of cell membranes. Streptolysin O exists in two forms, a reduced active state and an oxidized reversibly inactive state [1][2][3][4].
In Vitro:	When Streptolysin O is secreted by streptococci, it is in an active state, but it rapidly oxidizes to a reversibly inactive state with the formation of disulfide bonds[2]. Streptolysin O, belongs to the group of thiol-activated toxins, is a secreted virulence factor of GAS that induces apoptosis in neutrophils and macrophages at later time points (~4 h). Streptolysin O induces eukaryotic cell lysis in a cholesterol-dependent manner, is highly upregulated in the GAS M1T1 clone during bloodstream dissemination. Streptolysin O is known to promote Group A Streptococcus (GAS) resistance to phagocytic clearance by neutrophils, a critical first element of host defense against invasive bacterial infection[3].
References:	[1]. Sierig G, et al. Cytotoxic effects of streptolysin o and streptolysin s enhance the virulence of poorlyencapsulated group a streptococci. Infect Immun. 2003 Jan;71(1):446-55. [2]. Van Epps DE, et al. Streptolysin O II. Relationship of Sulfyhdryl Groups to Activity. Infect Immun. 1971 May;3(5):648-52. [3]. Uchiyama S, et al. Streptolysin O Rapidly Impairs Neutrophil Oxidative Burst and Antibacterial Responses to Group A Streptococcus. Front Immunol. 2015 Nov 16;6:581. [4]. Yamamoto I, et al. Mutational and comparative analysis of streptolysin O, an oxygen-labile streptococcal hemolysin. Biosci Biotechnol Biochem. 2001 Dec;65(12):2682-9.

Cat. No.	Product name	Field of application
DC72058	Levoleucovorin	Levoleucovorin (Levofolinic acid) is the pharmacologically active levoisomer of racemic leucovorin. Levoleucovorin can be used as a rescue agent after high-dose Methotrexate therapy, and in combination with fluorouracil for the research of advanced metastatic colorectal cancer.
DC71555	Geranyl diphosphate	Geranyl diphosphate is a key intermediate in the isoprenoid biosynthesis pathway (IBP).
DC71393	Cortisol sulfate sodium	Cortisol sulfate sodium (Cortisol 21-sulfate) is a metabolite of Cortisol. Cortisol sulfate sodium is a specific ligand for intracellular transcortin.
DC47666	NMTCA	NMTCA (NMTPRO) is a sulfur-containing N-nitrosamino acid. NMTCA can be used as an indicator of endogenous nitrosation by gas chromatography-thermalenergyanalysis.
DC46876	NHC-diphosphate triammonium	NHC-triphosphate triammonium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) as a triphosphate form. NHC-triphosphate triammonium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.
DC46875	NHC-triphosphate tetraammonium	NHC-triphosphate tetraammonium is an active phosphorylated intracellular metabolite of β-d-N4-Hydroxycytidine (NHC) as a triphosphate form. NHC-triphosphate tetraammonium is a weak alternative substrate for the viral polymerase and can be incorporated into HCV replicon RNA.
DC45591	2′-Deoxyadenosine 5′-monophosphate disodium	2′-Deoxyadenosine 5′-monophosphate disodium, a nucleic acid AMP derivative, is a deoxyribonucleotide found in DNA. 2′-Deoxyadenosine 5′-monophosphate disodium can be used to study adenosine-based interactions during DNA synthesis and DNA damage.
DC45590	Disodium 5'-dGMP	2'-Deoxyguanosine 5'-monophosphate disodium (5′-dGMP disodium) is a mononucleotide having guanine as the nucleobase. 2'-Deoxyguanosine 5'-monophosphate disodium is a nucleic acid guanosine triphosphate (GTP) derivative.
DC45589	2'-Deoxyuridine 5'-monophosphate disodium	2'-Deoxyuridine 5'-monophosphate disodium is reductively methylated to dTMP (2'-deoxythymidine 5'-monophosphate) by bisubstrate enzyme thymidylate synthase (TS). dTMP is a nucleotide required for DNA synthesis.
DC43977	L-Palmitoylcarnitine TFA	L-Palmitoylcarnitine TFA, a long-chain acylcarnitine and a fatty acid metabolite, accumulates in the sarcolemma and deranges the membrane lipid environment during ischaemia.