MMLV RT

Moloney Murine Leukemia Virus Reverse Trancscriptase Recombinant
Cat. No.
BT25684
Source
Recombinant E. coli strain.
Synonyms
Appearance
Sterile Filtered clear solution (200 U/µl).
Purity
Usage
Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

MMLV (Moloney Murine Leukemia Virus) Reverse Transcriptase is a DNA polymerase that synthesizes a complementary DNA strands from single-stranded RNA, DNA, or an RNA-DNA hybrid as a template. This recombinant enzyme was purified from E.coli, which carried a modified MMLV-RT gene. Compared to AMV Reverse Transcriptase, this enzyme has a much weaker 5' - 3' ribonuclease H activity, which allows the syntesis of longer cDNAs (>7kb).

Product Specs

Description
Moloney Murine Leukemia Virus (MMLV) Reverse Transcriptase is a DNA polymerase that synthesizes complementary DNA strands using single-stranded RNA, DNA, or RNA-DNA hybrids as templates. This recombinant enzyme, purified from E. coli containing a modified MMLV-RT gene, exhibits significantly lower 5' - 3' ribonuclease H activity compared to AMV Reverse Transcriptase, enabling the synthesis of longer cDNAs (exceeding 7 kb).
Physical Appearance
Clear, sterile-filtered solution (concentration: 200 U/µl).
Formulation
The formulation consists of 50mM Tris-HCl (pH not specified), 0.1M NaCl, 0.1% Triton X-100, 2mM DTT, 0.1mM EDTA, and 50% glycerol.
Stability
The enzyme remains stable for 5 days at 10°C. For extended storage, store at -20°C. Avoid repeated freeze-thaw cycles.
Unit Definition
One unit of enzyme activity is defined as the amount required to catalyze the incorporation of 1 nanomole of deoxyribonucleotide into acid-insoluble products within 10 minutes at 37°C, using poly(A)-oligo(dT)12-18 as the template-primer. Standard cDNA synthesis conditions are as follows: 50mM Tris-HCl (pH 8.3), 75mM KCl, 3mM MgCl2, 10mM DTT, 1.0mM each of dATP, dGTP, dCTP, and dTTP, 0.2 mg random hexamer primer, 1-5 mg RNA template, and 200 units of M-MLV Reverse Transcriptase in a total reaction volume of 20 µl. The reaction is incubated for 45 minutes at 42°C.
Source
Recombinant E. coli strain.
5x Reaction Buffer
250mM Tris-HCl (pH8.3), 375mM KCl, 15mM MgCl2, and 50mM DTT.

Product Science Overview

Discovery and Function

Reverse transcriptase (RT) was first discovered in 1970 and is a key enzyme in the life cycle of retroviruses. It enables these viruses to replicate by converting their RNA genomes into DNA, a process known as reverse transcription . MMLV-RT is an RNA-dependent DNA polymerase that synthesizes cDNA from single-stranded RNA templates . This enzyme is widely used in techniques such as reverse transcription-polymerase chain reaction (RT-PCR), which is essential for detecting and quantifying RNA molecules .

Recombinant Production

The recombinant production of MMLV-RT involves cloning the gene encoding the enzyme into an expression vector, which is then introduced into a host organism, typically Escherichia coli . This allows for the large-scale production of the enzyme. Advances in codon optimization and culture conditions have significantly improved the yield and activity of recombinant MMLV-RT .

Applications

MMLV-RT is extensively used in various molecular biology applications, including:

  • cDNA Synthesis: Essential for converting RNA into cDNA, which can then be amplified and analyzed.
  • RT-PCR: Widely used for detecting and quantifying RNA, including in diagnostic tests for viruses such as SARS-CoV-2 .
  • Gene Expression Studies: Facilitates the study of gene expression patterns by converting mRNA into cDNA for further analysis.
Improvements and Variants

Research has focused on improving the properties of MMLV-RT, such as its thermostability and enzymatic activity. For example, introducing a disulfide bridge in the ribonuclease H region has been shown to enhance the thermostability of the enzyme . These improvements make the enzyme more efficient and reliable for various applications.

Quick Inquiry

Personal Email Detected
Please use an institutional or corporate email address for inquiries. Personal email accounts ( such as Gmail, Yahoo, and Outlook) are not accepted. *
© Copyright 2024 Thebiotek. All Rights Reserved.