Lyo-Compatible MMLV-RT

Lyo-Compatible MMLV-RT is a high concentration reverse transcriptase and dilution buffer. Lyo-Compatible MMLV-RT is added to a glycerol free qPCR mix to create a Lyo-ready 1-step RT-qPCR mix for subsequent lyophilization.

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Meridian's Lyo-Compatible MMLV-RT

  • Highly sensitive cDNA synthesis, even low concentrations of template RNA

  • Thermostability up to 45°C, for more challenging transcripts

  • High-quality, first-strand cDNA synthesis ideal for most one-step RT-PCR and RT-qPCR applications

  • Ideal for creating ambient-temperature stable assays.

Lyo-Compatible MMLV-RT Graph

Lyo-Compatible MMLV-RT, MDX042

Application: RT-qPCR Specimen Type: Reverse Transcriptase,Air-Dryable & Lyo-Ready Enzymes Concentration: > 165 U/µL High Concentration: Yes Wet: Yes
Glycerol-Free: YesYes Lyo-Ready: Requires excipients Air-Dryable: Requires excipients Dryable: Requires excipients Sustainability: Glycerol-Free

Glycerol-free high concentration reverse transcriptase and dilution buffer. Can be used to create 1-step RT-qPCR mixes for subsequent lyophilization.

Available in 8 µL (1,000 Rxns) or 80 µL (10,000 Rxns) aliquots


Lyo-Compatible MMLV-RT is a high-concentration, Moloney Murine Leukemia Virus (MMLV) Reverse Transcriptase (RT) with reduced RNase H activity, which exhibits high sensitivity and efficiency for cDNA synthesis and is suitable for incorporation into wet or lyophilized multiplex RT-PCR assays, allowing high sensitivity detection of low copy number RNA targets.


Description High concentration reverse transcriptase and dilution buffer. Can be used to create 1-step RT-qPCR mixes for subsequent lyophilization.
Concentration > 165 U/µL (see List of Lot-Specific Enzyme Concentrations)
Appearance Clear, colorless solution
Application cDNA synthesis, RT-PCR, PCR, two-step RT-qPCR, one-step RT-qPCR
Sample type RNA
Presentation 2 vials
Storage -20 °C
Mix stability See outer label
DNA contamination None detected in PCR amplification with traces overlay with the negative control on E. coli and mouse genomic DNA specific targets.
DNase/RNase Contamination No detectable degradation

FAQs: Lyo-compatible MMLV-RT

For RNA with very high secondary structure, we recommend using 55C MMLV-RT (MDX117), this is a glycerol-free reverse transcriptase can be used at temperatures up to 60°C which improves the cDNA yield from difficult RNA targets that require higher temperature to denature strong secondary structures.

Avoiding ribonuclease contamination is of primary concern since high quality template RNA is required. You can add RNase Inhibitor (MDX056).

The Lyo-Compatible MMLV-RT is supplied with an enzyme dilution buffer, but if you are going to make cDNA, you will also require a buffer that contains 0.2 mM each dATP, dCTP, dGTP & dTTP, 10 mM DTT (dithiothreitol), 25 mM KCl, 3.5 mM MgCl2 and 50 mM Tris–HCl (7.5). However, if you want to do RT-qPCR, we recommend Lyo-Ready 1-Step RT-qPCR Buffer (MDX052).

The reverse transcriptase can be inactivated by adding a chelating agent such as EDTA or heating to 70°C or higher for 10 min.

Yes, to initiate cDNA synthesis, the Lyo-Compatible MMVL-RT reverse transcriptase requires a primer to bind to its complementary sequences on the RNA template and serve as a starting point for synthesis of a new strand. For general cDNA synthesis, random hexamer primers and oligo(dT) primers can be used either separately or mixed. For RT-PCR and RT-qPCR gene-specific primers should be used.

Unlike eukaryotic replicative polymerases, reverse transcriptase lacks exonuclease activity and so is error prone. MMLV-based reverse transcriptase has been reported to have an error rate in the range of 1.1 × 10−4 to 4.8 × 10−4.

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