SuperScript™ III Reverse Transcriptase
SuperScript™ III Reverse Transcriptase
Invitrogen™

SuperScript™ III Reverse Transcriptase

Invitrogen SuperScript III Reverse Transcriptase is a genetically engineered MMLV reverse transcriptase (RT) created by the introduction of several mutationsRead more
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Catalog NumberNo. of Reactions
1808009310 Reactions
1808004450 Reactions
18080085200 Reactions
Catalog number 18080093
Price (USD)
132.65
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140.00
Save 7.35 (5%)
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No. of Reactions:
10 Reactions
Request bulk or custom format
Price (USD)
132.65
Online Exclusive
140.00
Save 7.35 (5%)
Each
Add to cart

Invitrogen SuperScript III Reverse Transcriptase is a genetically engineered MMLV reverse transcriptase (RT) created by the introduction of several mutations for reduced RNase H activity, increased half-life, and improved thermal stability. SuperScript III RT offers higher cDNA yields, improved cDNA lengths, improved efficiency on GC-rich target RNAs, and overall better performance than wild-type MMLV and MMLV RNase H-minus enzymes.

SuperScript RTs are the most highly trusted and widely used RTs with over 50,000 citations, reviews, and publications to date. The enzyme is purified to near homogeneity from E. coli containing the modified pol gene of Moloney Murine Leukemia Virus.

Features of SuperScript III Reverse Transcriptase include:
• First-strand cDNA may be synthesized at temperatures up to 55°C
• cDNA can be generated from 100 bp to >12 kb
• Increased specificity
• High yields of cDNA and full-length products

Note: The latest member of the SuperScript RT family, SuperScript IV Reverse Transcriptase, features enhanced thermostability, processivity, yields, and performance with any RNA samples, including those of suboptimal purity or integrity.

For Research Use Only. Not for use in diagnostic procedures.
Specifications
Final Product TypeFirst-Strand cDNA
FormatStand-alone Enzyme
No. of Reactions10 Reactions
Optimal Reaction Temperature50°C
Quantity2,000 Units
Reaction FormatSeparate components
Reagent TypeReverse Transcription
Reverse TranscriptaseSuperScript III
Ribonuclease H ActivityReduced
Shipping ConditionDry Ice
Size (Final Product)Up to 12.3 kb
Starting MaterialRNA
TechniqueReverse Transcription
Concentration200 U/μL
GC-Rich PCR PerformanceHigh
Reaction Speed30 to 50 min.
Unit SizeEach
Contents & Storage

• SuperScript™ III Reverse Transcriptase, 10 μL (2,000 units at 200 U/μL)
• 5X First-strand buffer, 1 mL
• DTT, 500 μL (100 mM)

Store at –20°C.

Frequently asked questions (FAQs)

Which components of the SuperScript III First Strand Synthesis System for RT-PCR are available for purchase separately?

The following components are available as stand-alone items:

- Superscript III Reverse Transcriptase (Cat. Nos. 18080093, 18080044, 18080085)
- Oligo (dT)20 Primer (Cat. No. 18418020)
- Random hexamers (Cat. No. 48190011)
- 10 mM dNTP Mix (Cat. Nos. 18427013, 18427088)
- RNAseOUT Recombinant Ribonuclease Inhibitor (Cat. No. 10777019)
- E. coli RNAse H (Cat. Nos. 18021014, 18021071)

I am interested in generating cDNA from total RNA. What is the difference between SuperScript III Reverse Transcriptase and SuperScript III First Strand Synthesis System for RT-PCR?

SuperScript III Reverse Transcriptase (Cat. Nos. 18080093, 18080044, 18080085) contains the stand-alone enzyme and a vial each of 5X first-strand buffer and 100 mM DTT.

SuperScript III First Strand Synthesis System for RT-PCR is a complete kit that provides the SuperScript III Reverse Transcriptase and all the other components required for synthesis of first-strand cDNA from total or poly(A)- RNA. It includes:
- Superscript III Reverse Transcriptase
- Oligo (dT)20 Primer
- Random hexamers
- 10X RT buffer
- 25 mM MgCl2
- 0.1 M DTT
- 10 mM dNTP Mix
- RNAseOUT Recombinant Ribonuclease Inhibitor
- E. coli RNAse H
- DEPC-treated water
- Total HeLa RNA control
- Sense control primer
- Anti-sense control primer
Note: The kit does not include the PCR amplification enzyme.

How can I remove genomic DNA contamination from my sample prior to performing RT-PCR?

We recommend using ezDNase (Cat. No. 11766051). ezDNase Enzyme's high specificity for double-stranded DNA enables efficient and fast genomic DNA removal without reduction in the quality or quantity of RNA. ezDNase Enzyme is heat-labile and so can be easily deactivated by heat treatment at moderate temperature (55 degrees C). These features make ezDNase Enzyme an excellent choice for genomic DNA removal prior to reverse transcription reactions.

How much RNA should be employed for first-strand cDNA synthesis?

The amount of RNA template for a cDNA synthesis is highly flexible and depends upon the amount of sample available and an individual's need. In general, 1 µg total RNA is used in a typical 20-µL RT reaction.

Find additional tips, troubleshooting help, and resources within ourReverse Transcription and RACE Support Center.

Should I treat the cDNA with RNase H prior to downstream processing?

RNase H treatment is not always necessary. Many PCR reactions work without it. However, for cDNA synthesized with RNase H-deficient reverse transcriptases (like SuperScript II, III, and IV), RNA/cDNA hybrids—especially GC-rich ones—may not denature well, reducing PCR sensitivity. RNase H treatment can help in such cases. Additionally, RNase H treatment is beneficial for cloning larger fragments.

View all SuperScript™ III Reverse Transcriptase, 2,000 Units FAQs