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3CR Bioscience Limited’s patented genotyping chemistry, PACE, is the latest in allele-specific chemistry. It provides consistent results.
Endonucleases DNA-specific, dsDNase
Endonucleases DNA-specific, dsDNase
OverView
Double-Strand Specific dsDNase (dsDNase) is ideal for fast and effective removal of contaminating DNA from PCR master mixes.
Taq polymerases are commonly contaminated by bacterial DNA. This is a problem in PCR based bacterial typing and detection as it might cause false positive results. The unique properties of dsDNase make it suited for removal of contaminating DNA from PCR master mixes prior to addition of DNA template.
In figure 1, a PCR master mix was treated with different amounts of dsDNase before performing a qPCR to measure the contaminating bacterial DNA in the master mix. ArcticZymes dsDNase effectively removed contaminating DNA below known levels of the assay detection limits.
The dsDNase from Arctic shrimp (Pandalus borealis) is recombinantly produced in Pichia pastoris. It cleaves phosphodiester linkages in DNA to yield oligonucleotides with 5’-phosphate and 3’-hydroxyl termini.
The specific activity is estimated to be 30 times higher than that of bovine DNase I. In the presence of magnesium as only divalent cation and using oligos as a substrate, the activity towards dsDNA is 5000-fold higher than towards ssDNA.
The unique double strand-specificity allows specific degradation of dsDNA while leaving shorter ssDNA as primers and probes essentially intact. Easy inactivation by moderate heat (65°C) allows addition of DNA intended for analysis directly after removal of contaminating DNA.
Workflow – Decontamination of PCR master mixes
Recommended applications:
Key advantages with dsDNase:
- Double-strand DNA specific endonuclease
- High specific activity
- Can be heat-inactivated by moderate heat treatment (65°C for 15 minutes)
- Producing 5′-phospho-oligonucleotide products
Figures
Figure 1. The dsDNase effectively removes contaminated DNA
The dsDNase effectively removes contaminated DNA:
A PCR master mix was preincubated with various concentrations of dsDNase. After treatment, no DNA was amplified in non-template controls.
Properties
Specificity towards double-stranded DNA
Nucleic acid specificity has been tested towards double- and single-stranded DNA and RNA oligonucleotides. The specificity of dsDNase towards the substrate has been measured using 15-mer oligonucleotides with FAM at 5′ and DarkQuencher® 3′ (Eurogentec). The fluorescence is proportional to enzyme activity. Assay conditions: 25 mM Tris pH 7.5, 5 mM MgCl2, and 2 μM oligonucleotide.
Relative activities
Substrate Relative Activity
dsDNA 100%
ssDNA <0.03%
dsRNA <0.01%
ssRNA <0.01%
Double-Strand Specific dsDNase (dsDNase) is ideal for fast and effective removal of contaminating DNA from PCR master mixes.
Taq polymerases are commonly contaminated by bacterial DNA. This is a problem in PCR based bacterial typing and detection as it might cause false positive results. The unique properties of dsDNase make it suited for removal of contaminating DNA from PCR master mixes prior to addition of DNA template.
Cat.# 20106S, 20106L: Library size 450-750 bp (for illumina PE300 sequencing)
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.
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Features of NGS library size selection
- 5 ranges for NGS library size selection
- illumina PE100 sequencing: 250-350 bp
- illumina PE150 sequencing: 300-450 bp
- illumina PE100 sequencing: 450-750 bp
- Long-read sequencing: >5 kb
- Long-read sequencing: >10 kb
- Rapid protocol: only 20 minutes
- Simple workflow
- No columns required
- No gel purification required
- No centrifugation required
- 5 ranges for NGS library size selection
GeneAb™ IDH1 R132H
Description
Specifications
| Clone | IHC132 |
| Source | Mouse Monoclonal |
| Positive Control | Astrocytoma |
| Dilution Range | 1:200 |
Isocitrate Dehydrogenase 1 (IDH1) is a soluble, cytosolic enzyme involved in the TCA metabolic cycle. The most notable mutation in this enzyme, R132H, is clinically indicated in the majority of astrocytomas and oligodendroglial tumours, with the mutation being associated with more favourable prognosis and increased survival in those patients. IDH1 R132H is also useful in the differential diagnosis between anaplastic glioma and glioblastoma.
bis-PEG2-endo-BCN
bis-PEG2-endo-BCN is a click chemistry reagent, The BCN group enable copper free click chemitry with azide-tagged molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
bis-PEG2-endo-BCN is a click chemistry reagent, The BCN group enable copper free click chemitry with azide-tagged molecules. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Blood DNA Isolation Kits
Overview
- High yield and high purity DNA ready for any application
- Available in a variety of formats to properly suit your needs
- Compatible with blood collected on a variety of commercially available tubes
These kits allow for the isolation of DNA from the blood of various species, including humans and will recover genomic DNA, mitochondrial DNA, viral DNA and bacterial DNA. The purified DNA is of excellent quality and yield and completely compatible with any downstream application including PCR, qPCR and genotyping.
Blood DNA Isolation Mini Kit
Norgen’s Blood DNA Isolation Mini Kit is designed for the rapid preparation of DNA from up to 200 µL of whole blood using a rapid spin column protocol. Preparation time for a single sample is less than 30 minutes and each kit contains sufficient materials for 50 preparations.
Blood DNA Isolation Midi Kit
Norgen’s Blood DNA Isolation Kit is designed for the rapid spin column preparation of DNA from 0.3 to 2 mL volumes of whole blood. Preparation time for a single sample is less than 30 minutes, and each kit contains sufficient materials for 20 preparations.
Blood DNA Isolation Maxi Kit
This kit is designed for the rapid preparation of DNA from 3 mL up to 10 mL of whole blood. Preparation time for a single sample is less than 30 minutes.
Blood DNA Isolation 96-Well Kit (High Throughput)
This kit provides a rapid method for the high-throughput isolation of DNA from up to 200 µL of whole blood. Fast and easy processing using either a vacuum manifold or centrifugation.
Blood DNA Isolation Kit (Magnetic Bead System)
Norgen’s Blood DNA Isolation Kit (Magnetic Bead System) is designed for the rapid preparation of genomic DNA from up to 200 µL of whole blood from various species, including human. Purification is based on magnetic beads as the separation matrix. Norgen’s magnetic beads bind DNA under optimized salt concentrations and releases the bound DNA under low salt and slightly alkali conditions. The genomic DNA is preferentially purified from other cellular proteinaceous components. Typical yields of genomic DNA will vary depending on the cell density of the blood sample. The purified genomic DNA is fully digestible with all restriction enzymes tested, and is completely compatible with downstream applications including real-time PCR, NGS and microarray analysis.
Blood DNA Isolation 96-Well Kit (High Throughput Magnetic Bead System)
96-well format for high throughput applications. Purification with the 96-well plates can be integrated with a robotic automation system.
Details
Supporting Data
Figure 1 / 19
Click for expanded view
| Kit Specifications | |
| Maximum Blood Input | 200 μL |
| Column Binding Capacity | > 50 μL |
| Average Yield (200 μL of blood) | 2-8 μg* |
| Time to Complete 96 Purifications | 45 minutes |
*Yield will vary depending on the type of blood processed
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 1 year after the date of shipment. The kit contains a ready-to-use Proteinase K, which is dissolved in a specially prepared storage buffer. The buffered Proteinase K is stable for up to 1 year after the date of shipment when stored at room temperature.
| Component | Cat. 46300 (50 preps) | Cat. 46380 (100 preps) | Cat. 51400 (20 preps) | Cat. 31200 (12 preps) | Cat. 46350 (192 preps) | Cat. 59800 (50 preps) | Cat. 62600 (192 preps) |
|---|---|---|---|---|---|---|---|
| Lysis Buffer B | 20 mL | 2 x 20 mL | 2 x 40 mL | 2 x 110 mL | 2 x 40 mL | 20 mL | 1 x 40 mL 1 x 20 mL |
| Solution WN | 18 mL | 2 x 18 mL | 55 mL | 55 mL | 55 mL | 18 mL | 55 mL |
| Wash Solution A | 18 mL | 2 x 18 mL | 2 x 38 mL | 2 x 38 mL | 2 x 38 mL | – | – |
| Elution Buffer B | 30 mL | 2 x 30 mL | 30 mL | 30 mL | 2 x 30 mL | 15 mL | 1 x 30 mL 1 x 15 mL |
| Proteinase K in Storage Buffer | 1.2 mL | 2 x 1.2 mL | 4.4 mL | 8 mL | 4.5 mL | 1.2 mL | 4 mL |
| Magnetic Bead Suspension | – | – | – | – | – | 2 x 1.1 mL | 8.5 mL |
| Maxi Spin Columns | – | – | – | 12 | – | – | – |
| Mini Spin Columns | 50 | 100 | – | – | – | – | – |
| Midi Spin Columns | – | – | 20 | – | – | – | – |
| 96-Well Plate | – | – | – | – | 2 | – | 2 |
| Adhesive Tape | – | – | – | – | 4 | – | 2 |
| Collection Tubes | 50 | 100 | 20 | 12 | – | – | – |
| 96-Well Collection Plate | – | – | – | – | 2 | – | – |
| Elution Tubes | 50 | 100 | 20 | 12 | – | 50 | – |
| 96-Well Elution Plate | – | – | – | – | 2 | – | 2 |
| Product Insert | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
Aluminum Block – Flat Bottom (Flex)
The Opentrons Flat Bottom Aluminum Block can be placed directly on the OT-2/Opentrons Flex deck or on the Opentrons Temperature Module. This block can hold flat bottom plates and other flat labware at constant temperature. The aluminum block holds temperatures between 4°C and 95°C when used with the Opentrons Temperature Module (GEN2). This version is only compatible for the Opentrons Flex.
The Opentrons Flat Bottom Aluminum Block can be placed directly on the OT-2/Opentrons Flex deck or on the Opentrons Temperature Module. This block can hold flat bottom plates and other flat labware at constant temperature. The aluminum block holds temperatures between 4°C and 95°C when used with the Opentrons Temperature Module (GEN2). This version is only compatible for the Opentrons Flex.
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Our Team
Our sales team is comprised of knowledgeable and experienced individuals in the field of science, who are committed to service, honesty, and responsibility. We strive to ensure that our customers receive unparalleled service that they won’t find anywhere else. We want our customers to feel confident that we will provide them with the very best service possible.
TANATHORN VITISANT
Sales manager
Phone : 081-875-1869
Email : [email protected]
Line id : @a3p-scientific
NUCHANAT JANPRAPAS
Area Sales Manager
Phone : 099-263-6624
Email : [email protected]
Line id : belongkong
NANTASAK SRISUWAN
Area Sales Manager
Phone : 094-562-5914
Email : [email protected]
Line id : north6906295
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