RNase activity in a convenient and sensitive fluorimetric assay that delivers results in real time. Great for Quality Testing for RNase contamination of materials and supplies.
RAA uses a novel RNA substrate tagged with a fluorescent reporter molecule (fluor) on one end and a quencher on the other. In the absence of RNases, the physical proximity of the quencher dampens fluorescence from the fluor to extremely low levels. When RNases are present, however, the RNA substrate is cleaved, and the fluor and quencher are spatially separated in solution. This causes the fluor to emit a bright green signal when excited by light of the appropriate wavelength. Fluorescence can be readily detected with a fluorometer. Since the fluorescence of the RAA Substrate increases over time when RNase activity is present, results monitored with a fluorometer can be evaluated kinetically. The sequence of the RAA Substrate has been carefully optimized to detect several RNases, including RNase A, RNase T1, RNase I, micrococcal nuclease, S1 nuclease, mung bean nuclease, and Benzonase.
Other Products
Vibrio cholerae TaqMan PCR Detection Kits
Product Info
Document
Product Info
Overview
Detection kits for Vibrio cholerae
Available in TaqMan format for analysis
CE-IVD marked version available for in vitro diagnostic use
Vibrio cholerae is a comma-shaped, gram-negative bacterium. It is the cause of cholera in humans, which affects the upper small intestine. Transmission of the disease is mainly through contaminated food or water. Human subjects affected by cholera exhibit severe watery diarrhea and vomiting, caused by the cholera toxin produced by the bacterium. Many cases of cholera are life-threatening, as diarrhea and associated vomiting can lead to rapid dehydration and electrolyte loss. Even with the extensive research on its epidemiology, cholera still affects over 5 million people per year worldwide.
Vibrio cholerae TaqMan PCR Kit, 100 reactions
Ready to use format, including Master Mix for the target and PCR control to monitor for PCR inhibition and validate the quality
Specific Primer and Probe mix for the pathogen/virus/viroid of interest
Primer and Probe mix
Positive and negative control to confirm the integrity of the kit reagents
Vibrio cholerae TaqMan PCR Probe/Primer Set and Controls, 100 reactions
Specific Primer/Probe mix and Positive Control for the pathogen/virus/viroid of interest
Nuclease-free water
Can be used together with Norgen’s PCR Master Mix (#28007) or customer supplied master mix
Storage Conditions and Product Stability All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
All kit components should be stored at -20°C upon arrival. Repeated thawing and freezing (> 2 x) of the Master Mix and Positive Control should be avoided, as this may affect the performance of the assay. If the reagents are to be used only intermittently, they should be frozen in aliquots.
[TP1000] ExcelTaq™ Taq DNA Polymerase, 5 U/μl, 500 U
Product Info
Document
Product Info
Description
ExcelTaq™ Taq DNA Polymerase is a recombinant thermo-stable Taq DNA polymerase expressed and purified from an E. coli strain carrying the cloned gene. With a high DNA synthesis rate and high thermo-stability, ExcelTaq™ Taq DNA Polymerase is suitable for common and specialized PCR applications.
Features
5’→3′ DNA polymerase activity
5’→3′ exonuclease activity
No detectable 3’→5′ exonuclease (proofreading) activity
Generates PCR products with 3’-dA overhangs
Thermo-stable – half-life lasts for more than 40 min at 95°C
Applications
Routine PCR
Amplification of DNA fragments up to 8 kb
Generation of PCR products for TA cloning
DNA labeling
Storage
-20°C for 24 months
Document
ExcelTaq™ Taq DNA Polymerase is a recombinant thermo-stable Taq DNA polymerase expressed and purified from an E. coli strain carrying the cloned gene. With a high DNA synthesis rate and high thermo-stability, ExcelTaq™ Taq DNA Polymerase is suitable for common and specialized PCR applications.
Buffer system mainly for stabilizing protein/enzyme and performance
B buffer
0.15ml
1 Tube
Mainly activated systems such as magnesium ions
Positive control template
0.1ml
1 Tube
Mainly the positive plasmid template is used to test the effectiveness of the kit
Positive control primer mix
0.06ml
1 Tube
Mainly the primer combination of the positive control template
Reagent Guide Manua
16T/bags,48T/Box
3 bags
Reagent technology of protein/enzyme system: freeze-dried powder, freeze-dried microspheres
Principle overview
This kit is based on a room temperature and constant temperature nucleic acid rapid amplification technology: at room temperature and constant temperature, the recombinase and primer form the protein/single-stranded nucleotide complex Rec/ssDNA, with the help of auxiliary proteins and single-stranded binding protein SSB , invade the double-stranded DNA template; form a D-loop region at the invasion site, and start scanning the DNA double-strands; after finding the target region complementary to the primer, the Rec/ssDNA complex disintegrates, and the polymerase also binds to The 3′ end of the primer initiates chain extension. This kit relies on the action of exonuclease at 39 ºC, adding specific molecular probes designed based on the template, and using fluorescence monitoring equipment to achieve real-time monitoring of the amplification process of the target fragment.
Primer design
It is recommended to use primers with a length of 30-35 bp. Primers that are too short will affect amplification speed and detection sensitivity; primers are designed to avoid the formation of secondary structures that affect amplification; the amplicon length is recommended to be 150-300 bp, usually no more than 500 bp.
Fluorescent probe design
The probe sequence does not overlap with the specific primer recognition site, is 46-52 nt in length, and the sequence avoids palindromic sequences, internal secondary structures, and continuous repeated bases. The probe has four modification sites: the middle position ≥ 35 nt from the 5′ end is labeled with a dSpacer (tetrahydrofuran, THF) as the recognition site for exonuclease; the upstream of the THF site is labeled with a fluorescent group, and the downstream Label a quenching group, the distance between the two groups is 2-4 nt; THF is ≥15 nt from the 3′ end, and the 3′ end is labeled with a modifying group, such as an amine group, a phosphate group or a C3-Spacer.
Product features and advantages:
This kit has the advantages of high sensitivity, strong specificity,and short reaction time (only 20 minutes), and the reaction groups are in dry powder state, which is easy to operate and easy to store.
It can be applied to various brands of fluorescence quantitative PCR instruments, constant temperature fluorescence amplification instruments and other fluorescence detection equipment.
Document
This kit is based on a room temperature and constant temperature nucleic acid rapid amplification technology: at room temperature and constant temperature, the recombinase and primer form the protein/single-stranded nucleotide complex Rec/ssDNA, with the help of auxiliary proteins and single-stranded binding protein SSB , invade the double-stranded DNA template; form a D-loop region at the invasion site, and start scanning the DNA double-strands; after finding the target region complementary to the primer, the Rec/ssDNA complex disintegrates, and the polymerase also binds to The 3′ end of the primer initiates chain extension. This kit relies on the action of exonuclease at 39 ºC, adding specific molecular probes designed based on the template, and using fluorescence monitoring equipment to achieve real-time monitoring of the amplification process of the target fragment.
