DBCO-PEG8-PFP ester is a PEG reagent comprising a DBCO group which can react with azides for copper-free Click Chemistry reactions. The PFP ester is an active ester which can be used to react with amine groups. PFP esters have been are stable compounds and are less susceptible to undergo hydrolysis. PEG8 linker increases the water solubility of a compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
DBCO-PEG8-PFP ester is a PEG reagent comprising a DBCO group which can react with azides for copper-free Click Chemistry reactions. The PFP ester is an active ester which can be used to react with amine groups. PFP esters have been are stable compounds and are less susceptible to undergo hydrolysis. PEG8 linker increases the water solubility of a compound in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
The series of DNA Size Selection Kits (Magnetic Beads) were developed for DNA size selection using magnetic beads. A total of 11 kits are available, with different selection ranges spanning from 50 bp to over 10 kb. The kits provide a simple and quick approach for the enrichment of a specific range of DNA fragments. The kit workflow allows double-sided or single-sided size selection for specific size cutoffs.
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DNA size selection is a selective capture of DNA fragments of a specific range of size for next-generation sequencing (NGS) library preparations, PCR, ChIP assay, DNA ligations, endonuclease digestions, adapter removal, and other genomics and molecular biology applications. DNA size selection is preferred after NGS library prep in most of the cases. 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 technology uses paramagnetic particles, also known as SPRI (Solid Phase Reversible Immobilization) beads, to bind DNA reversibly and selectively. DNA fragments can be size-selected and purified by changing the properties of the magnetic beads or SPRI beads. The magnetic beads can easily separate the beads-binding DNA from the contaminants and unwanted components in the samples. The samples after DNA size selection are free of contaminants such as buffer components, enzymes, proteins, salts, dNTPs, primers, and adapters. Our proprietary magnetic beads reagents improve yield, selectivity, and reproducibility.
Specific DNA fragments at a certain length range can be purified simply using magnetic separation with different beads components, avoiding tedious and time-consuming gel extraction and column-based purification. The magnetic beads method is popular for common DNA size selection, including library size selection. The first beads-binding step, referred to as the right-side clean-up, removes large DNA fragments. The large DNA fragments are bound to the beads and are discarded. The desired DNA fragments in the supernatant are transferred to a new well, and new beads are added to the supernatant for the second beads-binding, referred to as the left-side clean-up. The double-size selected DNA fragments are eluted after ethanol rinsing.
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A single clean-up is needed for DNA size selection with large fragments. In this case, only the large DNA fragments are bound to the beads. The selected larger DNA fragments are eluted after ethanol rinsing.
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Interested in the analysis of DNA or RNA modifications? Then this DNA polymerase could simplify your site-specific analysis of such modifications. The 2′-O-Me sensitive DNA polymerase was engineered to catalyse DNA synthesis from both DNA and RNA and to quantify 2′-O-methylation of nucleotides site-specifically from RNA by real-time PCR. For further information refer to the original publication.
Available upon request and for R&D use only – Contact Us
The 2′-O-Me sensitive DNA polymerase is supplied as a 5 µM solution containing glycerol and is supplied together with 10x reaction buffer.
The enzyme can also be used for real-time cycling, when adding a suitable dye.
Interested in the analysis of DNA or RNA modifications? Then this DNA polymerase could simplify your site-specific analysis of such modifications. The 2′-O-Me sensitive DNA polymerase was engineered to catalyse DNA synthesis from both DNA and RNA and to quantify 2′-O-methylation of nucleotides site-specifically from RNA by real-time PCR. For further information refer to the original publication.
Norgen’s Plasma/Serum Circulating DNA Purification Kits (Slurry Format) provide efficient methods for the purification of fragmented free-circulating DNA from human plasma or serum. The kit is able to isolate all sizes of circulating DNA. The slurry format provides an advantage over other available kits in that it does not require extension tubes for the purification of free-circulating DNA from large sample volumes. DNA can be isolated from either fresh or frozen samples using this kit. The kit will also isolate viral and bacterial DNA from plasma/serum. Typical yields of purified free-circulating DNA will vary depending on the input sample (1-100ng/mL circulating DNA in human plasma), with more concentrated samples tending to yield more free-circulating nucleic acids. The purified, inhibitor-free plasma/serum free-circulating DNA is eluted in an elution solution that is compatible with PCR, qPCR, methylation-sensitive PCR and Southern Blot analysis.
Plasma/Serum Circulating DNA Purification Mini Kit (Slurry Format)
Norgen’s Plasma/Serum Circulating DNA Purification Mini Kit (Slurry Format) provides a fast, reliable and simple procedure for isolating circulating DNA from various amounts of plasma/serum ranging from 50 μL to 400 μL. Preparation time for a single sample is less than 30 minutes.
Plasma/Serum Circulating DNA Purification Midi Kit (Slurry Format)
Norgen’s Plasma/Serum Circulating DNA Purification Midi Kit (Slurry Format) provides a fast, reliable and simple procedure for isolating circulating DNA from various amounts of plasma/serum ranging from 400 μL to 2 mL. Preparation time for a single sample is less than 45 minutes.
Plasma/Serum Circulating DNA Purification Maxi Kit (Slurry Format)
Norgen’s Plasma/Serum Circulating DNA Purification Maxi Kit (Slurry Format) provides a fast, reliable and simple procedure for isolating circulating DNA from various amounts of plasma/serum ranging from 2 mL to 10 mL. Preparation time for a single sample is less than 45 minutes.
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| Kit Specifications | |
| Minimum Plasma/Serum Input | 50 μL |
| Maximum Plasma/Serum Input | 400 μL |
| Minimum Elution Volume | 100 μL |
| Time to Complete Purifications | < 30 minutes |
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years after the date of shipment.
| Component | Cat. 50600 (50 preps) | Cat. 51200 (20 preps) | Cat. 51300 (10 preps) |
|---|---|---|---|
| Lysis Buffer D | 65 mL | 125 mL | 3 x 125 mL |
| Slurry A1 | – | 6 mL | – |
| Slurry A2 | 12 mL | – | 12 mL |
| Binding Buffer B | 20 mL | 6 mL | 20 mL |
| Binding Buffer C | – | – | 30 mL |
| Wash Solution A | 2 x 38 mL | 2 x 38 mL | 3 x 38 mL |
| Elution Buffer B | 8 mL | 8 mL | 15 mL |
| Mini Filter Spin Columns | 50 | 20 | – |
| Midi Filter Spin Columns | – | – | 10 |
| Midi Collection and Elution Tubes | – | – | 20 |
| Collection Tubes | 50 | 40 | 10 |
| Spin Columns | – | 20 | 10 |
| Elution Tubes (1.7 mL) | 50 | 40 | 10 |
| Product Insert | 1 | 1 | 1 |
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Email : [email protected]
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