Cystathionine β-Synthase Activity Assay Kit (Fluorometric)

First assay in the market that measures CβS activity in biological samples
Catalog #: K998 | abID: ab241043

Product Details

abID ab241043
Cat # +Size K998-100
Size 100 assays
Detection Method Fluorescence (Ex/Em 368/460 nm)
Species Reactivity Eukaryotes
Applications Rapid assessment of native/recombinant CβS and CβS activity in mammalian samples
Features & Benefits • Simple, convenient, highly sensitive
• Fluorescent assay enables easy determination of CβS activity in a variety of biological samples
• Kit includes a stable CβS positive control
Kit Components • CβS Assay Buffer
• CβS Probe (in DMSO)
• CβS Substrate
• Cofactor 1
• Cofactor 2
• Reducing Agent
• AMC Standard (in DMSO, 1 mM)
• CβS Positive Control
Storage Conditions -20°C
Shipping Conditions Gel Pack
USAGE For Research Use Only! Not For Use in Humans.


Cystathionine β Synthase (EC, CβS) is a PLP-dependent enzyme that catalyzes the formation of H2S and cystathionine when using cysteine and homocysteine as substrates. Known for its role in human sulfur metabolism, mutations in the gene encoding CβS can result in high concentrations of homocysteine in plasma. Elevated circulating concentrations of homocysteine result in genetic disorders including Homocysteinuria and Down syndrome. Specifically, Homocysteinuria is an autosomal recessive disease with clinical manifestations including mental retardation, thromboembolism and connective tissue defects. Hydrogen sulfide, CβS product, is an important gaseous mediator, like nitric oxide, that has significant effects on the immunological, neurological, cardiovascular and pulmonary systems of mammals. BioVision’s Cystathione β Synthase Assay Kit utilizes cysteine and homocysteine as substrates to produce H2S. Hydrogen sulfide reacts with the azido-functional group of the fluorescent probe yielding a fluorescent amino group (Ex/Em = 368/460 nm). The assay is highly sensitive, has a simple easy-to-follow protocol, and can detect as low as 1.45 mU of CβS activity.

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