T4 DNA Ligase is an ATP and Mg2+ dependent dsDNA ligase which catalyses the formation of a phosphodiester bond between 3’-hydroxyl and 5’-phosphate termini in duplex DNA, duplex RNA and some DNA/RNA hybrids. T4 DNA Ligase is active on both blunt-end and cohesive-end substrates. It is also completely inactivated by incubating at 70°C for 10 minutes.
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T4 DNA Ligase is an ATP and Mg2+ dependent dsDNA ligase which catalyses the formation of a phosphodiester bond between 3’-hydroxyl and 5’-phosphate termini in duplex DNA, duplex RNA and some DNA/RNA hybrids. T4 DNA Ligase is active on both blunt-end and cohesive-end substrates. It is also completely inactivated by incubating at 70°C for 10 minutes.
This is a high-quality (commercial grade) version of the T4 DNA Ligase. T4 DNA Ligase is recombinantly produced in E. coli. ArcticZymes’ T4 DNA Ligase is extensively tested for contaminating DNase and RNase activities as well as residual host-cell gDNA.
Key Features
ATP and Mg2+ dependent dsDNA ligase
Easily heat-inactivated at 70°C for 10 minutes
Extensively tested for contaminating DNase and RNase activities as well as residual host-cell gDNA
Applications
Ligation of dsDNA
NGS library prep
Molecular cloning
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Other Products
Listeria monocytogenes Quantified Bacterial DNA Standard
Product Info
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Product Info
Overview
Quantified standard to be used as a positive control or PCR quantification standard
Vigorously quantified using multiple methods
Listeria monocytogenes has emerged as a significant foodborne pathogen that poses a serious public health problem. As the causative agent of Listeriosis, L. monocytogenes has the highest rate of fatality among all foodborne pathogens. L. monocytogenes is a facultatively intracellular, Gram-positive bacterium. Due to its ability to survive high and low temperatures as well as low pH, it could resist various food processing technologies, as well as grow at food storage temperatures. L. monocytogenes is known to be associated with raw meat, unpasteurized milk and dairy products, vegetables, and seafood. As little as 1000 organisms may cause the disease with pregnant, new-born, and immunocompromised individuals being the most susceptible.
Norgen’s Listeria monocytogenes Quantified Bacterial DNA Standard is prepared from cultured bacteria using Norgen’s sample preparation technology. The purified DNA is quantified vigorously using multiple methods including spectrophotometry, gel densitometry and real-time PCR. It is intended to be used as a positive control or PCR quantification standard for Listeria monocytogenes.
Upon receipt, store Norgen’s Listeria monocytogenes Quantified Bacterial DNA Standard at -20oC or lower. Avoid multiple freeze-thaw cycle. If needed, prepare smaller working aliquots and store at -20oC or lower.
Magen’s HiPure columns are prepared by high quality glass fiber filter membrane as raw materials through membrane cutting, membrane release, ring release, ring pressing, gland, weighing and other processes. HiPure nucleic acid adsorption columns have the characteristics of long-term stability and high binding capacity. Experiments show that the highest binding capacity and binding efficiency of HiPure nucleic acid adsorption columns are basically unchanged when stored at room temperature for 4 years.
The series of nucleic acid columns produced by Magen Biotech are based on carefully selected imported glass fiber membranes (GF/B, GF/D, GF/F). Columns production processes such as polypropylene injection molding materials, injection molding process, and downstream membrane packing and compression rings are strictly controlled. This is to ensure that the column has extremely high adsorption capacity and long-term stability. Compared with conventional products on the market, Magen’s columns are with varieties, and binding rate will not change when stored at room temperature for 4 years.
Details
Specifications
Features
Specifications
Recommended application
Small amounts of nucleic acid isolation, viral nucleic acid from cell free samples
Preservation conditions
Room temperature
Stability
Up to 4 years
Filter membrane
High quality glass fiber filter GF/F, 2 layers
Membrane aperture
0.7μm
Maximum binding yield of plasmid
30 μg
Maximum yield of alcohol mediated Binding
100 μg
Single liquid carrying capacity of column
900 μl
Minimum elution volume
80 μl
Withstand centrifugal force
5,000 x g
Centrifuge
Low speed centrifuge, Swing out Rotor, can placed a height of 6.5cm square, (height of HiPure DNA Plate & 1.6ml Collection Plate: height, 6.2cm)
Adsorption Mechanism
Based on the negatively charged DNA skeleton, it has a high affinity for positively charged glass fibers. In high salt and ethanol solutions, DNA/RNA binds to glass fiber and interacts with hydrophilic matrix on silica through hydrogen bond. DNA/RNA is tightly bound. All pollutants can be removed by washing solution. At high salt concentration, nucleic acids selectively bind to silica gel membrane, while other pollutants, mainly proteins, are removed by membrane washing.
Ordering information
CAT.No.
Product Name
Package
C13130
HiPure DNA Plate (2 x GF/F)with 1.6ml Collection Plate
10/Bag
Purchase Guide
Item No.
Product Name
Membrane type/number of layers
Collection tubes
Plasmid DNA binding capacity (Physical adsorption)
Note: GF/B pore size is for 1.0μM glass fiber membrane; GF/F pore size is for 0.7μm glass fiber membrane.
Document
Magen’s HiPure columns are prepared by high quality glass fiber filter membrane as raw materials through membrane cutting, membrane release, ring release, ring pressing, gland, weighing and other processes. HiPure nucleic acid adsorption columns have the characteristics of long-term stability and high binding capacity. Experiments show that the highest binding capacity and binding efficiency of HiPure nucleic acid adsorption columns are basically unchanged when stored at room temperature for 4 years.
Gel images of different ranges of library size selection. Sheared human genomic DNA was used as input.
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Library size selection is an enrichment of a specific range of library sizes for NGS library preparations. The NGS library preparation is related to the quality of the sequencing data. Precise NGS library size selection can increase sequencing efficiency, improve data quality, and reduce costs.
There are two types of sequencing technologies: short-read sequencing and long-read sequencing. Short-read sequencing uses DNA libraries that contain small insert DNA fragments of similar sizes, usually several hundred base pairs. The sequencing efficiency can be improved if the DNA size selection is in the right range. Cat.# 20104S and 20104L are the best kits for NGS library size selection of illumina paired-end 100 (PE100) sequencing with 100-200 bp library inserts; Cat.# 20105S and 20105L are the best kits for NGS library size selection of illumina paired-end 150 (PE150) sequencing with 150-300 bp library inserts; and Cat.# 20106S and 20106L are the best kits for NGS library size selection of illumina paired-end 300 (PE300) sequencing with 300-600 bp library inserts.
Long-read sequencing uses a large DNA fragment as input and makes very long reads. Usually, library size selection is preferred to remove smaller fragments. Cat.# 20110S and 20110L are the best kits for long-read sequencing size selection with DNA sizes >5 kb, and Cat.# 20111S and 20111L are the best kits for long-read sequencing size selection with DNA sizes >10 kb.
The magnetic beads, or SPRI (Solid Phase Reversible Immobilization) beads, is well used for the purification of DNA due to their reversible DNA binding. The NGS library can be size-selected by the magnetic beads or SPRI beads. The properties of the magnetic beads can be changed for a specific range of DNA binding. The contaminants and other unwanted components in the libraries can also be removed during size selection.
Specific ranges of NGS libraries can be selected using magnetic beads with different buffer compositions. The first DNA-beads binding step, also called the right-side clean-up, removes large NGS library fragments. The large NGS library fragments that bind to the beads are discarded with the beads pellet. The desired NGS library fragments in the supernatant are transferred to a new well, and new beads are added to the supernatant for the second beads-DNA binding, also called the left-side clean-up. After the rinsing step, the NGS library fragments with the dual selection are eluted in water or an appropriate buffer. The magnetic beads method has great advantages over time-consuming column purification and tedious gel-based purification.
NGS library size selection with dual clean-ups.
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Library size selection for long-read sequencing only requires a single clean-up. In this case, only the large library fragments are bound to the beads, while other small library fragments are discarded with the supernatant. The selected larger library fragments are eluted in water or an appropriate buffer after the rinsing step.
NGS library size selection with single clean-up for >5 kb and >10 kb libraries.
