Skip to Content
Merck
All Photos(1)

Key Documents

AMPD1

Sigma-Aldrich

DNase I

Amplification Grade

Synonym(s):

Deoxyribonuclease I

Sign Into View Organizational & Contract Pricing


About This Item

Enzyme Commission number:
UNSPSC Code:
41106300
NACRES:
NA.55

form

liquid

concentration

1 unit/μL

technique(s)

RT-PCR: suitable

color

colorless

shipped in

wet ice

storage temp.

−20°C

General description

Deoxyribonuclease I (DNase I) is an endonuclease isolated from bovine pancreas that digests double and single stranded DNA into oligo and mononucleotides. Amplification Grade DNase I has been purified to remove RNase activity, and is suitable for eliminating DNA from RNA preparations prior to sensitive applications, such as RT-PCR (Reverse Transcriptase - Polymerase Chain Reaction).

DNase I digests double- and single-stranded DNA into oligo- and mononucleotides. Using the Reaction Buffer provided, DNA is removed from RNA preparations in a 15 minute digestion at room temperature. The DNase I is then inactivated by heating with the Stop Solution. Heating also denatures hairpins in the RNA, so the RNA can be used directly in reverse transcription.

No current RNA isolation procedure removes 100% of the DNA. Many commercial DNase I formulations are contaminated with residual RNases. This RNase contamination can destroy or degrade valuable RNA samples prior to reverse transcription. Laboratory comparisons have shown that Sigma′s Amplification Grade DNase I demonstrates lower RNase activity than that from several leading molecular biology product suppliers.

Application

Amplification grade DNase I has been used:
  • for the digestion of DNA during isolation and purification of RNA. The purified RNA can be used for the synthesis of cDNA using RNA reverse transcriptase.
  • to hydrolyze extracellular matrix (ECM) components and enhance photosensitizer penetration into the biofilm to determine the efficacy of antimicrobial photodynamic therapy (aPDT) on Candida albicans biofilms
  • to remove contaminating DNA from total RNA extracted from cattle blood samples

Features and Benefits

  • Suitable for the elimination of DNA from RNA
  • Minimal RNase activity available
  • Optimized 10× reaction buffer and Stop Solution for complete inactivation of DNase I

Suitability

Suitable for use in removing DNA from RNA preparations.

Unit Definition

One unit completely digests 1 μg of plasmid DNA to oligonucleotides in 10 min. at 37 °C.

Legal Information

Purchase of this product is accompanied by a limited license for use in the Polymerase Chain Reaction (PCR) process for research purposes only and in conjunction with a thermal cycler whose use in the automated performance of the PCR process is covered by an up-front license fee, either by payment to Applied Biosystems or as purchased, i.e., and authorized thermal cycler.

Storage Class Code

10 - Combustible liquids

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Xian-Jun Liang et al.
Molecular vision, 18, 1649-1657 (2012-07-10)
Vascular endothelial growth factor (VEGF) is the most potent angiogenic mitogen, and has been associated with angiogenesis. Heparanase is an endoglycosidase that specifically cleaves heparan sulfate side chains, which can induce VEGF expression. The aims of the present study were
Ekene Nweke et al.
Oncology letters, 19(6), 4133-4141 (2020-05-10)
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal cancer types, and it is associated with a 5-year survival rate of <10% due to limited early detection methods and ineffective therapeutic options. Thus, an improved understanding of the mechanisms
Hafid Ait-Oufella et al.
The Journal of experimental medicine, 207(8), 1579-1587 (2010-07-07)
B cell depletion significantly reduces the burden of several immune-mediated diseases. However, B cell activation has been until now associated with a protection against atherosclerosis, suggesting that B cell-depleting therapies would enhance cardiovascular risk. We unexpectedly show that mature B
Hye-Ryoung Kim et al.
Virology journal, 17(1), 53-53 (2020-04-16)
Runting-stunting syndrome (RSS) in chickens, also known as malabsorption syndrome, which is characterized by mild to severe enteritis and diagnosed through typical histopathologic examination as well as clinical signs, results in considerable economic losses. Despite the many studies carried out
John P Dunbar et al.
Toxins, 12(6) (2020-06-24)
The noble false widow spider Steatoda nobilis originates from the Macaronesian archipelago and has expanded its range globally. Outside of its natural range, it may have a negative impact on native wildlife, and in temperate regions it lives in synanthropic

Protocols

The SeqPlex RNA Amplification kit provides a method for amplification of total RNA or isolated mRNA prior to entry into the workflows of the commonly used deep sequencing platforms.

Method for reverse transcription of RNA into DNA. Uses a premixed reagent that contains reverse transcriptase, dNTPs, primers, RNase inhibitor and buffer. Fast generation of cDNA.

The SeqPlex RNA Amplification kit provides a method for amplification of total RNA or isolated mRNA prior to entry into the workflows of the commonly used deep sequencing platforms.

The SeqPlex RNA Amplification kit provides a method for amplification of total RNA or isolated mRNA prior to entry into the workflows of the commonly used deep sequencing platforms.

See All

Related Content

The Spectrum Plant Total RNA Kit incorporates a new, patent-pending lysis and binding chemistry. This kit is intended to purify total RNA from species and tissue where most Total RNA protocols fail. Without sacrificing affordability, you can purify more total RNA per isolation.

Polymerase chain reaction (PCR) is a technique for amplifying nucleic acid molecules and is commonly used in many applications, including RT-PCR, hot start PCR, end point PCR and more.

Polymerase chain reaction (PCR) is a technique for amplifying nucleic acid molecules and is commonly used in many applications, including RT-PCR, hot start PCR, end point PCR and more.

Polymerase chain reaction (PCR) is a technique for amplifying nucleic acid molecules and is commonly used in many applications, including RT-PCR, hot start PCR, end point PCR and more.

See All

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service