Thermo Scientific Maxima H Minus First Strand cDNA Synthesis Kit with dsDNase provides a dramatically simplified workflow that combines genomic DNA elimination and cDNA synthesis into one-tube procedure. The kit contains a novel double-strand specific DNase (dsDNase) engineered to remove contaminating genomic DNA from RNA preps in 2 minutes without damage to quality or quantity of RNA. Highly specific dsDNase activity towards double-stranded DNA ensures that single-stranded DNA (such as cDNA and primers) is not cleaved and dsDNase treated RNA can be directly added to reverse transcription.

For reverse transcription the kit uses Thermo Scientific Maxima H Minus Reverse Transcriptase (RT), which is an advanced enzyme derived by in vitro evolution of M-MuLV RT. The enzyme features the highest thermostability among the derivatives of M-MuLV RT and lacks RNase H activity. The Maxima H Minus First Strand cDNA Synthesis Kit allows synthesis of long cDNAs up to 20 kb at elevated temperatures (up to 65°C), superseding other systems' abilities to produce full-length cDNA. Due to increased synthesis rates the reaction can be completed in 30 minutes.

Additional information about reaction components

• Maxima H Minus Enzyme Mix contains Maxima H Minus Reverse Transcriptase and RiboLock RNase Inhibitor. RiboLock RNase Inhibitor effectively protects RNA templates from degradation by RNases A, B and C at temperatures up to 55°C.
• oligo(dT)18 and random hexamer primers are supplied with the kit. Random hexamer primers bind non-specifically and are used to synthesize cDNA from all RNAs in a total RNA population. The oligo(dT)18 primer selectively anneals to the 3'-end of poly(A) RNA, synthesizing cDNA only from poly(A) tailed mRNA. Gene-specific primers may also be used with the kit to prime synthesis from a specified sequence.
• 10 mM dNTP Mix is a premixed aqueous solution of dATP, dTTP, dCTP, and dGTP.
• Nuclease-free water is provided for reaction set-up and dilution of sample DNA. The absence of endo-, exodeoxyribonucleases, ribonucleases, and phosphatases has been confirmed by appropriate quality tests.