All Photos(1)



SP6/T7 Transcription Kit

sufficient for 2 x 20 assays (stadard transcription), kit of 1 (12 components), suitable for DNA sequencing, suitable for hybridization

rna labeling, radioactive, transcription kit sp6/t7


sufficient for 2 x 20 assays (stadard transcription)

Quality Level


kit of 1 (12 components)




DNA sequencing: suitable
hybridization: suitable

storage temp.


General description

Sample Material
DNA inserted into the transcription vectors pSPT18 or pSPT19.The template DNA must be linearized with a suitable restriction enzyme before the transcription reaction to obtain transcripts of a defined length. Using intact plasmid DNA as template for transcription will result in heterogeneous transcripts of multiple plasmid lengths.


Heat inactivation: Stop the reaction by adding 2 μl 0.2 M EDTA (pH 8.0) and/or heating to 65 °C for 10 minutes.


Convenient kit for radioactive or nonradioactive labeling of RNA by the in vitro transcription with SP6 and T7 polymerase. The kit can also be used for "cold" transcription assays. By the in vitro transcription method single-stranded RNA probes of known length are produced, which can be used in a variety of hybridization techniques.
For in vitro transcription of DNA sequences cloned downstream of the SP6 or T7 promoter. Homogeneously labeled RNA can be synthesized with high efficiency (60 - 70% incorporation) using either radioactively (e.g.,32P, 3H, 35S) labeled or nonradioactively (e.g., digoxigenin or biotin) labeled ribonucleotides. Labeled transcripts lend themselves to all DNA and RNA hybridization techniques and are also used for genomic sequencing and S1 nuclease studies. Large amounts of highly pure RNA can be synthesized using the SP6/T7 system. These transcripts are used for studies on RNA-processing systems. Synthesized RNA can be translated in vitro, or in vivo after injection into oocytes. The transcription of defined mRNA can be inhibited by the introduction of "antisense"-RNA. The efficiency of in vivo translation of synthesized mRNA can be increased significantly by the introduction of a cap structure.


20 assays
1 kit containing 12 components.


DNA is inserted into the polylinker site of the transcription vectors pSPT18 or pSPT19; these two vectors differ only in the orientation of their polylinker regions. The promoters for SP6 and T7 RNA polymerases are located on either side of the polylinker. SP6 and T7 RNA polymerases specifically transcribe DNA sequences downstream of the SP6 or T7 promoters, respectively. Cloned inserts within the polylinker region are transcribed from either promoter. The first DNA strand may be transcribed with SP6 RNA polymerase and the opposite strand using T7 RNA polymerase. It is also possible to transcribe the first and opposite strands by inserting the same DNA into both pSPT18 and pSPT19 in opposite orientations and transcribing with only one of the RNA polymerases. SP6 and T7 RNA polymerase use the cloned DNA as template and synthesize complementary RNA in the presence of Mg2+ and ribonucleoside triphosphates. Spermidine stimulates enzyme activity. Specifically labeled transcripts are obtained when using radioactively (e.g., 32P, 3H, 35S) or nonradioactively (e.g., digoxigenin or biotin) labeled ribonucleotide triphosphates.

Preparation Note

Working solution: Standard Labeling Assay
ATP, GTP, UTP mixture
Prepare the ATP, GTP, UTP mixture by making a 1:1:1 mixture of solution 4, solution 6, and solution 7.

Transcription Assay with digoxigenin-11-UTP
ATP, GTP, CTP mixture 1
Mix 1:1:1 of ATP (vial 4), CTP (vial 5), and GTP (vial 6).
UTP/DIG-11-UTP mixture
Mix 1:1 digoxigenin-11-UTP (6 mM) with UTP (vial 7) and add as one part to mixture 1.

"Cold" Transcription
ATP, GTP, CTP, UTP mixture
Prepare this mix by combining solutions in vials 4, 5, 6 and 7 at a ratio of 1111.

Other Notes

For life science research only. Not for use in diagnostic procedures.

Kit Components Only

Product No.

  • pSPT18 DNA 0.25 mg/ml

  • pSPT19 DNA 0.25 mg/ml

  • Control DNA, (pSPT18- and pSPT19-neo-DNA, cleaved with Eco RI) 0.5 mg/ml

  • ATP, in Tris buffer 10 mM

  • CTP, in Tris buffer 10 mM

  • GTP, in Tris buffer 10 mM

  • UTP, in Tris buffer 10 mM

  • Transcription Buffer 10x concentrated

  • DNase I, RNase free, in buffer with 50% glycerol

  • RNase Inhibitor, in buffer with 50% glycerol

  • SP6 RNA Polymerase, in buffer with 50% glycerol

  • T7 RNA Polymerase, in buffer with 50% glycerol

See All (12)


Exclamation mark

Signal Word


Hazard Statements

Hazard Classifications

Eye Irrit. 2

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).

Product Information Sheet

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

Contact Technical Service