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High Yield Transcription for Every Application

From the Recognized Leader in High Yield Transcription

The MEGAscript Kit is the most frequently cited large-scale transcription kit, and with good reason. It enables the consistent transcription of high yields of full-length RNA (Figure 1). Ambion offers a complete line of products specifically optimized to generate the following products:

capped RNA
dsRNA transcripts
uncapped RNA
amplified RNA
short RNA transcripts
milligram quantities of transcript

MEGAscript: Consistent, High Yields of RNA Transcripts
Using the MEGAscript Kit, you can produce over 120 g of RNA from 1 g of DNA template. This is 10-50 times the amount of RNA produced by conventional transcription (Figure 2). Reactions are versatile and can be manipulated to include specialized reagents such as modified nucleotides or additional polymerase. In addition, Ambion has optimized the transcription of short (20-500 nt) DNA templates with the MEGAshortscript Kit. This patented technology was designed to maximize the yield of short RNA transcripts from plasmid, oligonucleotides, and PCR product templates.

Figure 1. Electropherogram of RNA Transcripts of Different Sizes. In vitro transcription was performed using 1, 4, or 9 kb templates with Ambion's MEGAscript Kit according to protocol. 20 l reactions were diluted to 100 l and 1 l w as assessed on the Agilent 2100 bioanalyzer. The single primary peak is indicative of product quality while the area under the peak is related to yield.

Figure 2. MEGAscript vs. Conventional In Vitro Transcription Reactions. 20 l transcription reactions containing 1 g template, T7 MEGAscript components and [32P]UTP, were incubated at 37C. 1 l aliquots were removed at 1 hr intervals and acid precipitable cpm determined by scintillation counting.

mMESSAGE mMACHINE: Translatable Capped RNA
For high yields of capped RNA, MEGAscript technology is incorporated into the mMESSAGE mMACHINE Kit. This kit contains an optimized ratio of cap analog to GTP, for the best trade off between yield and proportion of capped transcripts (80% capped). Furthermore, you can obtain 100% translatable capped RNA with the mMESSAGE mMACHINE T7 ULTRA Kit. This kit uses a unique cap analog that only incorporates in the functional, translatable orientation, resulting in the synthesis of capped RNAs that are 100% translatable.

MEGAscript RNAi: dsRNA Synthesis for RNAi
In one complete kit, you can generate ready-to-use double-stranded RNA (dsRNA) for RNAi experiments in non-mammalian systems. Unlike competing products, the MEGAscript RNAi Kit provides reagents to eliminate DNA template, single stranded RNA, and free nucleotides. The MEGAscript RNAi Kit allows researchers to synthesize 50 to 80 g or more of dsRNA, up to 1.2 kb in length, in a single transcription reaction.

MessageAmp II: RNA Amplification
Amplify RNA with MEGAscript technology using the MessageAmp II aRNA Amplification Kit. The MessageAmp II Kit can amplify as little as 100 ng of input RNA in a single round for GeneChip analysis. A rationally engineered M-MLV RT, ArrayScript, is provided in the kit to maximize yields of full-length cDNA. cRNA synthesis is powered by MEGAscript technology. These features result in high labeling efficiency, yielding consistently high percentages of Present Calls, and low 3'/5' ratios in GeneChip analysis. This procedure is compatible with biotin, cyanine dye (Perkin Elmer), and CyDye (Amersham Biosciences) labeling either during or after aRNA amplification. For additional information, see RNA Amplification Just Got Better.

Bulk Transcription-- Milligram Quantities of RNA
If you have a project or application that requires large amounts of RNA transcripts, Ambion can meet your needs with its bulk and custom products. Our MEGAscript technology has been optimized to produce milligram quantities of RNA. Contact for bulk orders or inquiries.

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Ordering Information
Cat# Product Name Size 1330 MEGAscript SP6 Kit 40 rxns 1333 MEGAscript T7 Kit 25 rxns 1334 MEGAscript T7 Kit 40 rxns 1338 MEGAscript T3 Kit 40 rxns 1340 mMESSAGE mMACHINE SP6 Kit 25 rxns 1344 mMESSAGE mMACHINE T7 Kit 25 rxns 1345 mMESSAGE mMACHINE T7 ULTRA Kit 10 rxns 1348 mMESSAGE mMACHINE T3 Kit 25 rxns 1354 MEGAshortscript T7 Kit 25 rx ns 1626 MEGAscript RNAi Kit 20 rxns 1751 MessageAmp II aRNA Amplification Kit 20 rxns B1334-5 5X MEGAscript T7 Kit 200 rxns


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