TruePrime® RCA kit

The TruePrime® RCA Kit uses a novel multiple displacement amplification methods based on the combination of the recently discovered DNA primase TthPrimPol and the highly processive and high-fidelity Phi29 DNA polymerase to amplify single- or double-stranded circular DNA molecules by rolling circle amplification (RCA). The strong strand displacement capacity of Phi29 DNA polymerase allows TthPrimPol to generate new primers on the displaced strands that are extended by Phi29 DNA pol, resulting in exponential isothermal DNA amplification. TruePrime® RCA
Kit eliminates the need for overnight cell culture and conventional DNA purification.

The starting material for TruePrime® rolling circle amplification can be:

  • Purified DNA: plasmids, cosmids, BACs, M13 clones, etc
  • Bacterial cells transformed with plasmids: colonies picked from agar plates, bacterial cultures or glycerol stocks

Additional Information

Supply: TruePrime® RCA kit is supplied in a single box, with sufficient reagents for 100 amplification reactions. The system consists of seven components, including the enzymes and buffers to perform the amplification reactions. Contents are provided in clear, screw-cap tubes with color-coded lids as referenced in the TruePrime® RCA kit handbook.

Shipping and Storage: TruePrime® RCA kit is shipped on dry ice. Upon receipt, the kit should be stored immediately at -20°C in a non-frost-free (constant temperature) freezer. If stored correctly the product can be kept for at least 24 months after shipping without displaying any reduction in performance. For longer storage periods we recommend a temperature of -80ºC.

Technical specifications: TruePrime® RCA kit uses a novel and reliable method to achieve accurate amplification of single – or double-stranded circular DNA molecules. Dedicated buffers and enzymes deliver microgram quantities of DNA. Typical DNA yields from a TruePrime® RCA kit reaction are above 3 µg per 25 µl reaction and 3-hour reaction time when starting from 1 ng of plasmid DNA (3-10 kb). For bigger template molecules (150-200 kb) yields are approximately 2 µg per 25 µl reaction and 3-hour reaction time when starting from 10 ng. Yields and kinetics will vary if crude or un-quantified samples are amplified. Reactions without input DNA (no template controls) do not produce any amplification products during 3-hour reaction times. The product of TruePrime® RCA reaction is high molecular weight, double-stranded concatemers of the circular template. Amplification products can be transformed after digestion with a single-site restriction enzyme and re-ligation. Store amplified DNA at 4°C for short-term storage or -20°C for long-term storage.
TruePrime® RCA kit uses alkaline incubation to allow DNA release and denaturation with very low DNA fragmentation. This results in amplified DNA with high integrity and fragment length.

Quality Control: Each batch of TruePrime® RCA kit is tested against predetermined specifications to ensure consistent product quality. Enzymes used in the kit have been tested separately to ensure adherence to specifications.

Intended use: TruePrime® RCA kit is intended for molecular biology use only and in vitro use only. This product is not intended for diagnosis, prevention or treatment of a disease in human beings or animals.

Patent: Patent protection for TthPrimPol and methods associated with its use is pending.

Safety information: Safety data sheets are available for download. This material may contain substances or activities that are harmful to human health. It should not be ingested, inhaled or brought into contact with skin, and handled with appropriate care in accordance with the principles of good laboratory practices.


Description Cap color 100 reactions
Buffer D Red 1 x 275 µl
Buffer N Translucent 1 x 275 µl
Reaction Buffer Yellow 1 x 550 µl
dNTPs Green 1 x 275 µl
H2O Blue 1 x 1500 µl
Enzyme 1 Purple 1 x 280 µl
Enzyme 2 Orange 1 x 80 µl


Grant Information

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