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cystathionine β-synthase

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By Targets:	Biochemical Assay Reagents (1) Fluorescent Dye (1)
By Research Areas:	Inflammation/Immunology (1)
Click Chemistry:	Labeling and Fluorescence Imaging (1) Azide (1)

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Targets Recommended: PGE synthase Thymidylate Synthase ATP Synthase Acetolactate Synthase (ALS) Glucosylceramide Synthase (GCS) NO Synthase Fatty Acid Synthase (FASN) Cyclic GMP-AMP Synthase GSK-3

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

**Cystathionine β-synthase**	Biochemical Assay Reagents	Others
Cystathionine β-synthase is an enzyme that catalyzes the condensation of serine and homocysteine to water and cystathionine. Cystathionine β-synthase is a prominent enzyme for the production of hydrogen sulfide (H₂S) .

7-Azido-4-methylcoumarin	Fluorescent Dye	Others
7-Azido-4-methylcoumarin is a fluorescent hydrogen sulfide (H2S) probe. 7-Azido-4-methylcoumarin serves as a highly sensitive assay for cystathionine β-synthase activity . It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.

Caraphenol A	Others	Inflammation/Immunology
Caraphenol A is a resveratrol trimer and is able to transiently reduce interferon-induced transmembrane (IFITM) protein expression. Caraphenol A safely enhances lentiviral vector gene delivery to hematopoietic stem and progenitor cells . Caraphenol A also inhibits *human cystathionine* β-synthase (hCBS) and human cystathionine γ- lyase (hCSE) with IC₅₀**s of 5.9 μM and 12.1 μM, respectively .

Cat. No.	Product Name	Category	Target	Chemical Structure

Caraphenol A	Leguminosae Phenols Polyphenols Plants Caragana sinica (Buchoz) Rehd.	Others
Caraphenol A is a resveratrol trimer and is able to transiently reduce interferon-induced transmembrane (IFITM) protein expression. Caraphenol A safely enhances lentiviral vector gene delivery to hematopoietic stem and progenitor cells . Caraphenol A also inhibits *human cystathionine* β-synthase (hCBS) and human cystathionine γ- lyase (hCSE) with IC₅₀**s of 5.9 μM and 12.1 μM, respectively .

Cat. No.	Compare	Product Name	Species	Source

	CBS Protein, Human (His) AI047524; AI303044; Beta thionase; Beta-thionase; Cbs; Cbs cystathionine beta-synthase; CBS_HUMAN; cystathionine beta synthase; cystathionine beta-synthase; EC 4.2.1.22; HIP 4; HIP4; Methylcysteine synthase; MGC18856; MGC18895; MGC37300; OTTHUMP00000109416; OTTHUMP00000109418; Serine sulfhydrase	Human	E. coli
	CBS, a hydro-lyase, initiates the transsulfuration pathway by catalyzing the beta-replacement reaction, converting L-serine to L-cystathionine using L-homocysteine. This process eliminates L-methionine and the potentially harmful metabolite L-homocysteine. CBS, beyond its catabolic role, contributes to hydrogen sulfide production, serving as a gasotransmitter with signaling and cytoprotective effects, particularly on neurons. CBS Protein, Human (His) is the recombinant human-derived CBS protein, expressed by E. coli , with N-6*His labeled tag. The total length of CBS Protein, Human (His) is 550 a.a., with molecular weight of ~64.5 kDa.

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7-Azido-4-methylcoumarin		Azide Labeling and Fluorescence Imaging
7-Azido-4-methylcoumarin is a fluorescent hydrogen sulfide (H2S) probe. 7-Azido-4-methylcoumarin serves as a highly sensitive assay for cystathionine β-synthase activity . It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.

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