M-MLV Reverse Transcriptase (200 U/μL) (Invitrogen™)

M-MLV Reverse Transcriptase is a recombinant DNA polymerase that synthesizes a complementary DNA strand from single-stranded RNA, DNA, or an RNA:DNA hybrid. Compared to AMV RT, Moloney Murine Leukemia Virus Reverse Transcriptase (M-MLV RT) lacks DNA endonuclease activity and has a lower RNase H activity.

One unit of M-MLV RT is the amount of enzyme required to incorporate 1 nmole of deoxyribonucleotide into acid-precipitable material in 10 min at 37°C using poly(A) oligo(dT)₂₅ as template-primer.

Features of M-MLV Reverse Transcriptase include:
• Excellent thermostability with optimal activity at 37°C
• Can be used to synthesize first-strand cDNA up to 7 kb
• Multiple applications including synthesis of first-strand cDNA, primer extension, sequencing dsDNA, cDNA libraries, and RT-PCR

Source
Purified from E. coli expressing the pol gene of M-MLV on a plasmid

Performance and quality testing
SDS-PAGE purity; endodeoxyribonuclease, exodeoxyribonuclease, and ribonuclease assays; and yield and length of cDNA product

Unit reaction conditions
50 mM Tris-HCl (pH 8.3), 40 mM KCl, 6 mM MgCl₂, 1 mM DTT, 0.5 mM [³H]dTTP, 0.1 mM poly(A), 0.1 mM oligo(dT)₂₅, 0.1 mg/mL BSA, and enzyme in 50 μL for 10 min at 37°C