igScript™ Reverse Transcriptase (igScript RT) is a recombinant Moloney Murine Leukemia Virus (MMLV) reverse transcriptase with reduced RNase H activity. It is highly efficient at producing full-length cDNA from long RNA templates. igScript RT is an RNA-directed DNA polymerase which lacks 3´ → 5´ exonuclease activity and is capable of producing cDNA from as little as 50 pg of total RNA for real-time RT-PCR analysis and other applications.

The physical purity of this enzyme is ≥98% as assessed by SDS-PAGE with Coomassie® blue staining (see figure below).

Product Source

The gene encoding recombinant MMLV Reverse Transcriptase with mutated RNase H domain is expressed in E. coli.


  • First strand cDNA synthesis for PCR or RT-PCR
  • Gene expression data validation by using RT-PCR


  • Recombinant MMLV reverse transcriptase with greatly reduced RNase H activity.
  • Active at temperatures up to 55°C.
  • Highly efficient at producing full-length cDNA from as little as 50 pg of total RNA.

Product Includes

  1.  igScript™ Reverse Transcriptase
  2. 10x igScript™ RT Reaction Buffer

Storage Temperature
–20 °C

1X MMLV Reverse Transcriptase Reaction Buffer
50 mM Tris-HCl, 75 mM KCl, 3 mM MgCl2, 10 mM DTT, pH 8.3 @ 25°C

Storage Buffer
50 mM Tris-HCl, 50 mM KCl, 1 mM DTT, 0.1 mM EDTA, 50% Glycerol, pH 7.5 @ 25ºC

Unit Definition
One unit is defined as the amount of enzyme required to incorporate 1 nmol of dTTP into acid insoluble material in 10 minutes at 37 °C using poly r(A)/oligo (dT) as a substrate.

Heat Inactivation
65°C for 20 minutes.3342 3344