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In Vitro Transcription & Translation on ZAGENO

MAXIscript® T7/T3 Kit (50 Reactions each) with Manual Invitrogen
Control Type Positive Starting Material Plasmid DNA Sample Amount /
From $ 322.00 (100 Reactions)
Sizes 1 (100 Reactions)
Catalog IDs AM1326M
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T7 High Yield In Vitro Transcription Kit MCLAB
Control Type / Starting Material dsDNA Sample Amount /
From $ 110.00 (20 Reactions)
Sizes 2 (20 - 100 Reactions)
Catalog IDs T7HT-100, T7HT-200
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HiScribe™ T7 ARCA mRNA Kit New England Biolabs
Control Type Standard Starting Material dsDNA Sample Amount /
From $ 307.00 (20 Reactions)
Sizes 1 (20 Reactions)
Catalog IDs E2065S
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EnGen® sgRNA Synthesis Kit, S. pyogenes New England Biolabs
Control Type Positive Starting Material dsDNA Sample Amount /
From $ 400.00 (20 Reactions)
Sizes 1 (20 Reactions)
Catalog IDs E3322S
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AmpliCap-Max™ T7 High Yield Message Maker Kit CellScript
Control Type Standard Starting Material dsDNA Sample Amount /
From $ 328.00 (25 Reactions)
Sizes 1 (25 Reactions)
Catalog IDs C-ACM04037
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3´-O-Me-m7G5\'ppp5\'G RNA Cap Structure Analog New England Biolabs
Control Type / Starting Material / Sample Amount /
From $ 143.00 (1 µmol)
Sizes 2 (1 - 5 µmol)
Catalog IDs S1411S, S1411L
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PURExpress® In Vitro Protein Synthesis Kit New England Biolabs
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From $ 253.00 (10 Reactions)
Sizes 2 (10 - 100 Reactions)
Catalog IDs E6800S, E6800L
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NEBNext mRNA Second Strand Synthesis Module New England Biolabs
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From $ 295.00 (20 Reactions)
Sizes 1 (20 Reactions)
Catalog IDs E6111S
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NEBNext® Ultra™ II Directional RNA Second Strand Synthesis Module New England Biolabs
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From $ 390.00 (24 Reactions)
Sizes 2 (24 - 96 Reactions)
Catalog IDs E7550S, E7550L
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NEBNext® Ultra™ II RNA First Strand Synthesis Module New England Biolabs
Control Type / Starting Material / Sample Amount /
From $ 150.00 (24 Reactions)
Sizes 2 (24 - 96 Reactions)
Catalog IDs E7771S, E7771L
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MEGAscript® T3 Kit Invitrogen
Control Type / Starting Material Plasmid DNA Sample Amount 1 μg
From $ 333.00 (40 Reactions)
Sizes 1 (40 Reactions)
Catalog IDs AM1338
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The in vitro transcription process

The starting template of in vitro transcription is a linear DNA template that includes a promoter region together with the usual ingredients for a successful transcription process: RNA polymerase, nucleotides, and an appropriate buffer system. Since every reaction is different, the conditions may vary depending on your DNA template, expected RNA yield, length, and purity.

Make use of our In Vitro Transcription Troubleshoot for any experimental issues.

Templates used

You need a double stranded DNA (dsDNA) template, but its origin is irrelevant. The template can be anything from normal PCR reactions, plasmids, or even cDNA templates that themselves were generated from RNA molecules. However, different kits may be suitable for different templates, so take care when choosing your kit.

  • In order to use a PCR product in an in vitro transcription reaction, you have to add a promoter to your fragment so that it is recognized by RNA polymerase. The promoter is added at the 5’ end of the fragment.
  • Plasmid vectors must first be linearized before the transcription reaction can ensue. This is (fairly) easily done by using restriction enzymes. Purification should be carried out after such a digest as the restriction enzymes may inhibit the downstream in vitro transcription process.
  • One of the latest developments in this field is using in vitro transcription in RNA amplification reactions. Here, the reaction template is created from RNA during reverse transcription, generating cDNA. A second strand synthesis reaction is then performed to convert the cDNA to dsDNA for the in vitro transcription to be carried out.

Other applications also exists such as the use of oligonucleotides as templates.

In Vitro Translation

Following you’re in vitro transcription procedure you may want to take it a step further and translate your newly formed RNA into the protein in which it encodes. Like in vitro transcription, in vitro translation or ‘cell-free protein synthesis’ is carried out using cellular machinery in a cell-free system. In vitro translation boasts many advantages over cell-based translation as it is not constrained by homeostasis or a cell wall so it enables the molecular biologist to have direct control over the environment in which translation is taking place. It also allows for the overexpression of proteins that would normally be toxic to the host cell and prevents proteolytic degradation by proteases normally present in the host.

The Applications of In Vitro Translation

Due to these advantages, the in vitro process has many applications. The identification of protein products can be achieved much more rapidly due to the direct access one has to the reaction. This then enables the subsequent determination of protein structure, folding dynamics and function through the use of proteomics. It also allows for the incorporation of non-natural amino acids and the synthesis of truncated or mutated gene products for functional and kinetic modifications of the protein.

How is it Achieved?

Only a few cell-free systems have been developed for the in vitro production of proteins, however, in theory, it should be possible to do this using any type of cell. Common cell-free systems used today are made from E. coli (ECE), wheat germ (WGE), rabbit reticulocytes (RRL) and insect cells. The components for cell-free reactions are obtained by lysing the cell of interest and removing unwanted cell debris by centrifugation. The leftover cell extract should include 70S and 80S ribosomes, elongation and translation factors, aminoacyl-tRNA synthetases, amino acids and an energy source such as ATP or GTP.

There are two approaches to in vitro translation: the standard approach or the coupled approach. The standard approach is used when you have an RNA template as your starting material while the coupled approach is used if you have DNA. The coupled approach incorporates in vitro transcription so that an RNA template can be produced for translation.

Here at ZAGENO, you have the unique possibility to compare in vitro transcription & translation kits from different suppliers to find the most suitable one for your experiment.

Other products that may be of use for your in vitro experiments can be found in the following categories:

If you have any questions, feel free to ask us in the comments!

Problems in the lab? Learn about methods and experiments in our Knowledge section or look up a specific Troubleshooting guide.