Firefly Luciferase Assay Kit 2

This kit is designed to measure firefly luciferase activity in transfected cell reporter assays.

Firefly luciferase is widely used as a reporter for studying gene regulation and function, and for pharmaceutical screening. It is a very sensitive genetic reporter due to the absence of endogenous luciferase activity in mammalian cells or tissues. Firefly luciferase is a 62,000 Dalton protein, which is active as a monomer and does not require subsequent processing for its activity. The enzyme catalyzes ATP-dependent D-luciferin oxidation to oxyluciferin, producing light emission. Firefly luciferase follows Michaelis-Menten kinetics and, as a result, maximum light output is not achieved until the substrate and co-factors are present in large excess. When assayed under these conditions, light emitted from the reaction is directly proportional to the number of luciferase enzyme molecules.

Note: This is a flash-type luminescence assay that requires signal to be measured immediately after adding working solution to samples. It requires a single tube luminometer or luminescence microplate reader with reagent injectors. Biotium also offers the Steady-Luc HTS Firefly Assay Kit (cat. no. 30028L), which is a homogenous glow-type assay with signal half-life of 3-5 hours.

Easy-to-Use for Consistent Results

This firefly luciferase assay kit is designed for simple and efficient quantitation of firefly luciferase reporter enzyme activity from cultured cells with high sensitivity and linearity. This kit is a new and improved replacement for the Firefly Luciferase Assay Kit (catalog no. 30003). It features Firefly Assay Buffer 2.0, which has better working solution stability compared to the original assay buffer.

Other commercial luciferase assays require you to dilute all of the firefly substrate in the assay buffer, resulting in limited shelf life after first use. In Biotium’s kits, the substrates are provided as separate stock solutions that are freshly diluted for every assay, for excellent shelf life with consistent signal over time.

Assay size is based on 96-well format. The kits include enough cell lysis buffer to perform the stated number of assays in plate sizes ranging from 96-well to 24-well. Additional 5X Firefly Lysis Buffer (catalog no. 99923) can be purchased separately if needed.

Biotium also offers the Firefly & Renilla Luciferase Single Tube Assay Kit (catalog no. 30081), a combined luciferase assay kit for sequential measurement of Firefly and Renilla luciferase activity sequentially in the same sample with high sensitivity and linearity.

More Luciferase Kits & Related Products

Catalog number	Product	Description
30085	Firefly Luciferase Assay Kit 2.0	Flash-type firefly luciferase assay kit.
30075	Firefly Luciferase Assay Kit (Lyophilized)	Firefly luciferase assay kit with lyophilized assay buffer for economical room temperature shipping and convenient storage at -20°C.
99923	5X Firefly Lysis Buffer	Extra lysis buffer for use with Firefly Luciferase Assay Kits, only required if using well sizes larger than 24-well.
30028	Steady-Luc™ Firefly HTS Assay Kit	Glow-type firefly luciferase assay with signal half-life of about 3 hours for high-throughput screening in multi-well plates.
30028L	Steady-Luc Firefly HTS Assay Kit (Lyophilized)	Steady-Luc kit with lyophilized assay buffer for economical room temperature shipping and convenient storage at -20°C.
30082	Renilla Luciferase Assay Kit 2.0	Flash-type Renilla luciferase assay kit.
99912	5X Passive Lysis Buffer	Extra lysis buffer for use with Renilla Luciferase Assay Kits, only required if using well sizes larger than 24-well.
30081	Firefly and Renilla Luciferase Single Tube Assay Kit	Assay kit for measuring firefly and Renilla activities sequentially in the same sample in a single tube.
99821-100mL	1X Passive Lysis Buffer 2.0	Extra lysis buffer for use with Firefly & Renilla Single Tube Assay Kits, only required if using well sizes larger than 24-well.
30020	ATP-Glo™ Bioluminometric Cell Viability Assay Kit	Flash-type luminescence-based assay for measuring cell viability or ATP concentration.
22003	Mini Cell Scrapers	Mini-cell scrapers, useful for lysing cells in 96-well, 48-well, or 24-well plates.