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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Permagen’s MSPU750R is identical to the product shown above, with the exception of the added integrated cushion base which helps aid in robot, and consumable labware inconsistencies.
Also available in a kit form which includes our MTP96 clear top plate for 0.2 mL PCR tubes and strips.
Features include solid aluminum alloy construction and hard coat anodized finish for years of trouble-free use, and compatible with any magnetic beads
MSP750R (magnet plate only)
MSP750RKT (Includes top plate kit for 0.2 mL strips and tubes)
Minimum – 30 µL
Maximum – 0.2 mL
Permagen’s MSPU750R is identical to the product shown above, with the exception of the added integrated cushion base which helps aid in robot, and consumable labware inconsistencies.
This kit features a rapid, high-throughput 96-well format for isolating high yield and high quality DNA from saliva. The purified saliva DNA is compatible with any number of downstream applications including PCR, qPCR, Southern Blot analysis, sequencing, microarray analysis and more. This kit is also compatible with Norgen’s Saliva DNA Collection and Preservation Devices (Cat. RU49000). It is fully compatible to both vacuum and centrifugation protocols.
Background
Human genomic DNA found in saliva can be used in various applications in diagnostics including the detection of biomarkers to diagnose a disease, follow the disease’s progress or monitor the effects of a particular treatment. Isolation of DNA from saliva for diagnostics has become an attractive alternative to isolation from blood or tissue due to the fact that sample collection is non-invasive.
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| Kit Specifications | |
| Binding Capactity Per Well | 50 μg |
| Maximum Loading Volume Per Well | 600 μL |
| Size of DNA Purified | All sizes |
| Time to Complete 96 Purifications | 40 minutes |
Storage Conditions and Product Stability
The kit contains ready-to-use Proteinase K which is dissolved in a specially prepared storage buffer. The Proteinase K should be stored at room temperature or 4°C. All other solutions should be kept tightly sealed and stored at room temperature (15 – 25°C). This kit is stable for 1 year after the date of shipment.
| Component | Cat. RU35200 (192 preps) |
|---|---|
| Lysis Buffer F | 100 mL |
| Proteinase K in Storage Buffer | 4 mL |
| Binding Buffer B | 40 mL |
| Wash Solution A | 2 x 38 mL |
| Elution Buffer B | 30 mL |
| 96-Well Plate | 2 |
| 96-Well Collection Plate | 2 |
| Adhesive Tape | 4 |
| 96-Well Elution Plate | 2 |
| Product Insert | 1 |