CO00016 Midstream Cassette 140x15mm, blue w/lens

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.

Gel images of different ranges of size selection. Sheared human genomic DNA was used as input.

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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.

DNA size selection with dual clean-ups.

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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.

DNA size selection with single clean-up for >5 kb and >10 kb DNA.

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Features of DNA size selection and library size selection

• • • High specificity and high recovery of size selection
    • 11 selection ranges are available, including 5 ranges for NGS library size selection
      • • 50-100 bp
        • 100-200 bp
        • 200-500 bp
        • 250-350 bp: ideal for illumina PE100 sequencing
        • 300-450 bp: ideal for illumina PE150 sequencing
        • 450-750 bp: ideal for illumina PE300 sequencing
        • 500-1000 bp
        • 1-3 kb
        • 1-5 kb
        • >5 kb: ideal for long-read sequencing
        • >10 kb: ideal for long-read sequencing
    • Fast and simple
      • • 20-min protocol
        • No gel purification required
        • No columns required
        • No centrifugation required
    • Efficient removal of contaminants and unwanted components

Overview

Solvent resistant heat sealing foil which is peelable. This seal is suitable for low and room temperature compound storage.

• Our PeelASeal DMSO Foil is a DMSO resistant seal compatible with polypropylene and forming an excellent seal to cyclic olefin copolymer (COC) plates
• The solvent resistance of this seal enables its use for low and room temperature compound storage in Dimethyl Sulfoxide (DMSO) and organic solvents
• 100% DMSO can be stored at room temperature for 12 months without deterioration of the seal
• It forms a weld seal to polyethylene plates and cannot be peeled off
• Access is by piercing using a blade or a needle
• This seal is available as sheets, for use with manual and semi-automated sealers, such as our HeatASeal 500 Sealing Machine
• Also available in multiple roll formats compatible with specified automated heat sealers, such as our Wasp or Chameleon XT

Solvent resistant heat sealing foil which is peelable. This seal is suitable for low and room temperature compound storage.

Overview

• Rapid and efficient removal of abundant proteins from serum and plasma samples
• Process 10 samples in 30 minutes
• Allows for visualization of low abundance proteins
• Convenient and affordable spin column protocol
• Generic protocol allows for depletion from human and other animal samples
• Purification is based on spin column chromatography that uses Norgen’s resin separation matrix

This kit provides a fast and simple procedure for the effective depletion of major serum proteins including albumin, α-antitrypsin, transferrin and haptoglobin from serum and plasma samples.  Such abundant proteins usually obscure less abundant proteins in gel electrophresis making them difficult to visualize and recover.  The kit reduces sample complexity to allow for convenient investigation of less abundant proteins.  In other applications such as mass spectroscopy, fractionating abundant proteins improves the resolution of less abundant proteins.  The kit is ‘generic’ in that it is not antibody-based and can thus be used to deplete abundant proteins from any starting material – human or various other animals – making it more versatile, flexible and affordable than other kits.   Resulting proteins are ready for a range of applications including 2D gel electrophoresis, SDS-PAGE, Mass Spectrometry, Protein microarrays, DIGE (Difference Gel Electrophoresis) and more.

Details

Supporting Data

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Kit Specifications
Maximum Column Capacity	500 μg
Minimum Column Capacity	200 μg
Minimum Elution Volume	30 μL
Time to Process 10 Samples	30 minutes

Storage Conditions
All solutions should be kept tightly sealed and stored at room temperature. Once opened, the solutions should be stored at 4°C. This kit is stable for 2 years after the date of shipment.

Component	Cat. 17300 (25 preps)
Wash Solution G	125 mL
Elution Buffer C	8 mL
Protein Neutralizer	4 mL
Spin Columns	25
Collection Tubes	25
Elution Tubes (1.7 mL)	25
Product Insert	1