For AU-capped RNA and saRNA workflows

Prima RNApols® Cap AU

Prima RNApols® Cap AU is designed for AU-capped RNA and self-amplifying RNA workflows where capping efficiency, yield, dsRNA reduction, and RNA integrity shape IVT performance. It supports cleaner IVT output and more efficient RNA synthesis with lower cap analog, DNA template, and enzyme requirements.

>97%AU Capping with Reduced Cap Analog InputAchieve >97% co-transcriptional capping at lower cap analog input, helping reduce reagent requirements in AU-capped IVT workflows.
saRNAHigh Yield with Less DNA Template & Enzyme InputsGenerate high yields of AU-capped RNA and saRNA with less DNA template and enzyme input while maintaining RNA integrity.
Up to100xUltra-Low dsRNA + Higher PurityReduce dsRNA by up to 100x and minimize unwanted IVT byproducts, supporting higher-purity RNA for vaccine, therapeutic, and platform-development applications.
Prima RNApols® Cap AG kit

Contains the following:

  • 20,000 U RNA Polymerase (100 µL)
  • 9.5 kb Linearized saRNA Template (25 µL)
  • 5x Reaction Buffer (100 µL), 4 vials

For Research Use Only (RUO)

$349.00

For GMP, bulk orders, or formal quotations, please submit your request.

Performance Data

Capping Efficiency
>97%

AU Capping with Reduced Cap Analog Input

Capping efficiency on 9.5 kb saRNA determined by LC-MS; 4 nM DNA template, 9 mM NTPs, 5 U polymerase/µL IVT.

Capping Efficiency & dsRNA
Up to100x

Ultra-Low dsRNA + Higher Purity

Capping efficiency on 9.5 kb saRNA determined by LC-MS; dsRNA determined by J2 ELISA; 4 nM DNA template, 9 mM NTPs, 5 U polymerase/µL IVT, 2 mM cap analog.

Yield, Integrity, Capping & dsRNA
saRNA

High Yield with Less DNA Template & Enzyme Inputs

Yield determined by A260 on 9.5 kb saRNA; integrity determined by Agilent Fragment Analyzer; capping efficiency determined by LC-MS; dsRNA determined by J2 ELISA; 4 nM DNA template, 9 mM NTPs, 5 U polymerase/µL IVT, 2 mM cap analog.

FAQs

What is the Prima RNApols® Cap AU promoter sequence?

TTGATTAATTAACCCACACTATAATG

Will Prima RNApols Cap AU work with the T7 promoter?

No, Cap AU is only compatible with the Cap AU promoter. The specific promoter sequence must be incorporated into the DNA template of interest to successfully generate mRNA during in vitro transcription (IVT). For information about this process, refer to the Use Guide or contact Primrose for support.

Will the Prima RNApols Cap AU work with any transcription start site (TSS)?

Cap AU is an engineered enzyme optimized for co-transcriptional capping with AU cap analogs. However, Cap AU is also compatible with other cap analogs and transcription start sites.

Can I use my preferred capping strategy?

Cap AU is optimized for AU co-transcriptional capping, significantly improving efficiency and reducing reagent use for saRNA templates.

Can I use the mRNA made from the Cap AU kit DNA template for cellular expression?

No, this template DNA is meant to be used as a kit control for mRNA yield only.

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Product purchased through this website is for purchaser’s internal research use only and any other use is prohibited except pursuant to a separate agreement between Primrose Bio and purchaser expressly permitting such other use.