TaqMan™ Gene Expression Assay (FAM)
TaqMan™ Gene Expression Assay (FAM)
Applied Biosystems™

TaqMan™ Gene Expression Assay (FAM)

Green features
Applied Biosystems TaqMan Gene Expression assays are used for quantitative real-time PCR analysis of gene expression and consist of aRead more
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Catalog NumberNo. of Reactions
4453320XS (75 x 75 μL Reactions), inventoried
4331182S (250 x 250 μL Reactions), inventoried
4351368L (2900 x 967 μL Reactions), made to order
4351370M (750 x 750 μL Reactions), made to order
4351372S (360 x 360 μL Reactions), made to order
4448892XS (75 x 75 μL Reactions), made to order
Catalog number 4453320
Price (USD)
99.50
Each
Order now
No. of Reactions:
XS (75 x 75 μL Reactions), inventoried

Applied Biosystems TaqMan Gene Expression assays are used for quantitative real-time PCR analysis of gene expression and consist of a pair of unlabeled PCR primers and a TaqMan probe with a dye label (FAM) on the 5’ end and a minor groove binder (MGB) and non-fluorescent quencher (NFQ) on the 3’ end.

Features of TaqMan Gene Expression assays include:
Easy to use—just add cDNA and master mix and run the qPCR—no melt curves required
Specific—TaqMan assays use proprietary MGB-containing probes that can be up to 15 bases shorter than non-MGB probes, improving the specificity of the assay
Sensitive—TaqMan assays are ideal for measuring low levels of expression or low-abundance targets
Accurate—identify small fold-changes with high accuracy of quantitation
Extensive content—Over 1.8 million predesigned assays available for over 25 different species
Gold-standard TaqMan qPCR chemistry—TaqMan assays draw on Thermo Fisher Scientific's bioinformatics assay design pipeline to help ensure high specificity and minimal cross-reactivity, even for gene variants with high sequence homology
Fast delivery—your assays shipped in as little as 1–2 days (see below)

Approximate ship time
Inventoried: 1–2 days in North America, 3–5 days in Europe*
Made to order: 4–6 days in North America, 6–10 days in Europe

TaqMan Gene Expression assays are the gold standard in real-time PCR gene expression studies, built on more than 20 years of experience. Each assay includes target primers and a sequence-specific probe optimized for the best functional performance. No additional design, optimization, or melt curve analysis is needed. Available in a wide variety of formats and species, new assay designs are constantly added to help meet your research needs. TaqMan assays have been cited in over 40,000 publications and are backed by more than 350 patents.

Pre-formulated assay
• 2 unlabeled PCR primers (900 nM each final 1X concentration)
• 1 FAM dye-labeled TaqMan MGB probe (250 nM final 1X concentration)

All of our predesigned TaqMan Gene Expression assays are covered by the TaqMan Assays qPCR Guarantee.**

Recommended master mix: TaqMan Fast Advanced Master Mix

*Our most popular assays are stocked in North America and Europe for overnight delivery where possible. If an assay is out of stock, it may take an additional 3–5 business days for delivery.

**Subject to terms and conditions. For complete details, go to www.thermofisher.com/taqmanguarantee.

For Research Use Only. Not for use in diagnostic procedures.
Specifications
Detection MethodPrimer-probe
FormatTube
GC-Rich PCR PerformanceHigh
PCR MethodqPCR
Reaction SpeedFast
For Use With (Equipment)7500 System, 7500 Fast System, 7900HT System, StepOne™, StepOnePlus™, ViiA™ 7 System, QuantStudio™ 3, QuantStudio™ 5, QuantStudio™ 6 Flex, QuantStudio™ 7 Flex, QuantStudio 6 Pro, QuantStudio 7 Pro, QuantStudio™ 12k Flex
Green FeaturesSustainable packaging
Product LineTaqMan™
Product TypeGene Expression Assay
Shipping ConditionRoom Temperature
Concentration20X
Fidelity (vs. Taq)60 X
No. of ReactionsXS (75 x 75 μL Reactions), inventoried
Unit SizeEach
Contents & Storage
1 tube containing 20X (XS, S, and M sizes) or 60X (L size) mix of pre-formulated assay (1 probe and 2 primers).

Store at -15°C to -25°C.

Frequently asked questions (FAQs)

Can I multiplex my assays if my amplicons are not all the same length?

Yes, it is possible. The amplicons do not have to be the same length in order to duplex the assays. You need to use different reporter dyes on the probes in multiplex - they should have a substantial difference in maximum emission wavelength to be effective. A classic example is to use FAM and VIC for the 2 probes. Depending on the expression of the targets, you may also need to limit the primer concentration for one of the assays. This is common when duplexing a target and endogenous control (the control probe is VIC labeled and the primer concentration is decreased so the target assay can properly compete for use of enzyme and dNTPs).

I want to order a TaqMan Gene Expression Assay that you have discontinued. Is there a way do that?

Yes, you can order it as a custom assay. Since the assay is discontinued, it can not be ordered on-line. You will have to call or email the order to genomics@appliedbiosystems.com, and include the assay ID. The assay will be synthesized once the order is received. It will be designed and priced as a Custom TaqMan Gene Expression Assay so you will need to choose the scale.

Can I use TaqMan Gene Expression Assays for a gene copy number study?

TaqMan Gene Expression Assays with “_s1” as assay ID suffix are the assays whose primers and probes are designed within a single exon, and therefore, will detect genomic DNA. However, the application of these assays in gene copy number studies has not been validated. Other gene expression assays will not detect gDNA, let alone the region of variance.

I am working on both mouse and human samples for gene expression studies. Do you have one endogenous control that I can use with both species?

The 18S rRNA is highly conserved among eukaryotes. We have several configurations of assays for this gene: P/N 4331182, Assay ID: Hs99999901_s1; PN 4319413E, 4310893E, 4333760T, 4333760F, 4308329. You can use any of these for both human and mouse samples, as well as samples from any other eukaryotic species.

Can I check the end product of a TaqMan Gene Expression Assay by running an agarose gel?

Yes, you can check the end product on an agarose gel. If you use the TaqMan Universal PCR Master Mix (including AmpErase UNG, Cat. No. 4304437), we recommend running the gel immediately after the PCR, since the trace amount of AmpErase UNG may digest the end product that contains double-stranded DNA with dUTP incorporated. The average length of amplicon ranges from 50-150 bp. The exact amplicon length is indicated on the detailed page of each assay on our website. You can get to that page by clicking on the Assay ID; the amplicon information is listed in the section "Assay Details".