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PCR DIG Probe Synthesis Kit

greener alternative

sufficient for 25 reaction (50 μL final reaction volume)

probe, DIG system


sufficient for 25 reaction (50 μL final reaction volume)

Quality Level



greener alternative product characteristics

Designing Safer Chemicals
Learn more about the Principles of Green Chemistry.

greener alternative category


shipped in

dry ice

storage temp.


General description

The PCR DIG Probe Synthesis Kit contains an alkali-labile digoxigenin (DIG)-11deoxyuridinetriphosphate (dUTP) formulation. This kit is for convenient and efficient generation of DIG-labeled DNA probes that are highly sensitive in polymerase chain reaction (PCR). The probes are labeled with DIG-11dUTP (alkali-labile), by the method of PCR. The ratio of DIG-dUTP:dTTP is 1:2.
The PCR DIG Probe Synthesis Kit contains the Expand High Fidelity DNA polymerase mix. This robust enzyme mix with proofreading activity will polymerize probes 40 bp to 5 kb long using 10 pg plasmid DNA and 10 ng genomic DNA as template. The DIG-labeled probes are stable for over one year.
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product is designed as a safer chemical.  The DIG System was established as a sensitive and cost-effective alternative to radioactivity for the labeling and detection of nucleic acids. There are many available publications that prove the versatility of the DIG System, so use of radio-labeling is no longer the only option for labeling of DNA for hybridization.


Digoxigenin (DIG)-labeled DNA probes produced from the PCR DIG Probe Synthesis Kit is suitable for low-(single)-copy gene detection of rare mRNA in Southern and northern blots. DIG-labeled DNA probes have also been used for labeling of DNA during in situ hybridization.
The concentration of the supplied dUTP-nucleotide mix can be adjusted according to probe length. Labeling effectiveness can quickly be determined on an agarose gel.
Stripping and reprobing of membranes is possible multiple times following the protocol in the package insert.
One PCR labeling reaction (50 μl) will typically yield enough probe for 20 ml hybridization solution. The kit can be used for approximately 25 reactions (50 μl).


1 kit containing 6 components.


Each lot of the PCR DIG Probe Synthesis Kit is function tested in PCR. Amplification products are assayed in genomic Southern blots.
Under PCR conditions as described in this package insert, the control reaction generates an amplification product of 442bp. Due to multiple incorporations of DIG-dUTP during the PCR process, the molecular weight of the PCR products is significantly increased compared to the unlabeled PCR product. A specific fragment pattern is detected after hybridization of the PCR product to 10μg human genomic DNA followed by chemiluminescent detection.

Other Notes

One reaction can produce enough labeled probe to analyze 650cm2 of blot membrane.
For life science research only. Not for use in diagnostic procedures.
Sample Materials
Any DNA suitable as PCR template can be labeled. Use either:
  • Plasmid DNA, 10 to 100pg (optimal amount, 10pg)
  • Genomic DNA, 1 to 50ng (optimal amount, 10ng)

Template concentration during PCR is the most critical factor in producing specific probes. For most templates, use no more than the amounts given above. Too much template will lead to coamplification of primary extension products (those copied past the priming sites). These primary extension products may contain repetitive sequences or unrelated products from secondary priming sites (if prepared from genomic DNA) or vector sequences (if prepared from plasmid DNA). In subsequent hybridization assays, the probe-target hybrid will be a smear because the probe will cross-hybridize with vector or genomic DNA sequences.
For best results, use cloned inserts as template. Genomic DNA can be more difficult to use.
Purity of template is not as critical for PCR labeling as for other types of labeling.

Kit Components Only

Product No.

  • Enzyme Mix, Expand High Fidelity 3.5 U/μl

  • PCR DIG Probe Synthesis Mix, containing dATP, dCTP, dGTP (2 mM each) 10x concentrated

  • PCR Buffer with MgCl2 10x concentrated

  • dNTP Stock Solution, containing dATP, dCTP, dGTP, dTTP (2 mM each), pH 7.0 10x concentrated

  • Control Template, plasmid DNA in Tris/EDTA buffer, pH 8.0. The 5-kb plasmid contains the cDNA for the human tissue-type plasminogen activator (tPA) 20 pg/μl

  • Control PCR Primer Mix, containing 50 pmol of each primer, control PCR primer 1 and 2 2 mM each

Hazard Statements

Precautionary Statements

Hazard Classifications

Aquatic Chronic 3

Storage Class Code

12 - Non Combustible Liquids



Flash Point(F)

does not flash

Flash Point(C)

does not flash

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Quotes and Ordering

Andreas R Gruber et al.
Molecular biology and evolution, 25(9), 1923-1930 (2008-06-21)
The 7SK small nuclear RNA (snRNA) is a key player in the regulation of polymerase (pol) II transcription. The 7SK RNA was long believed to be specific to vertebrates where it is highly conserved. Homologs in basal deuterostomes and a
Zengrong Zhu et al.
Methods in enzymology, 546, 215-250 (2014-11-16)
Human pluripotent stem cells (hPSCs) have the potential to generate all adult cell types, including rare or inaccessible human cell populations, thus providing a unique platform for disease studies. To realize this promise, it is essential to develop methods for
Dervla T Isaac et al.
Infection and immunity, 81(2), 411-420 (2012-11-28)
Histoplasma capsulatum is a fungal respiratory pathogen that survives and replicates within the phagolysosome of macrophages. The molecular factors it utilizes to subvert macrophage antimicrobial defenses are largely unknown. Although the ability of H. capsulatum to prevent acidification of the
Handeng Liu et al.
Parasitology research, 112(3), 1011-1020 (2012-12-21)
Microsporidia are a group of obligate intracellular parasites of medical and agricultural importance, which can infect almost all animals, including human beings. Using the genome data of Nosema bombycis, four families of miniature inverted-repeat transposable elements (MITEs) in ribosomal DNA
Lluís Quintana et al.
Tissue engineering. Part A, 15(1), 45-54 (2008-11-26)
Cellular self-organization studies have been mainly focused on models such as Volvox, the slime mold Dictyostelium discoideum, and animal (metazoan) embryos. Moreover, animal tissues undergoing regeneration also exhibit properties of embryonic systems such as the self-organization process that rebuilds tissue


Digoxigenin (DIG) Labeling Methods

Digoxigenin (DIG) labeling methods and kits for DNA and RNA DIG probes, random primed DNA labeling, nick translation labeling, 5’ and 3’ oligonucleotide end-labeling.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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