Raffinose/D-Galactose Assay Kit

Description

The genesig® Dengue, Zika and Chikungunya Virus Multiplex kit is designed for the detection and differentiation of Dengue virus, Zika virus (ZIKV) and Chikungunya virus (CHIKV) only. Individual tests have been designed in the conserved regions of each virus such that all isolates and subtypes will be detected simultaneously in the same test. The Dengue component of the test will detect subtypes 1, 2, 3 and 4 but will not differentiate between them. A positive Dengue test results indicates that the sample has either one of these four subtypes.

The primers and probe sequences in this kit have 100% homology with a broad range of clinically relevant reference sequences based on a comprehensive bioinformatics analysis. They therefore have a very broad quantification profile.

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

• Detection kits for Staphylococcus aureus
• Available in TaqMan format for analysis

Mastitis is the single most costly disease of dairy cattle resulting in the reduction of milk yield and quality. The inflammation of the utter is mainly caused by bacteria, and Staphylococcus aureus is often considered the most common cause of contagious mastitis in dairy herds. S. aureus infection is estimated to be present in up to 90% of dairy farms and is responsible for 35% of the economic loss in the dairy industry (Lee et al., 2005). S. aureus is a facultatively anaerobic, Gram positive bacterium. The majority of S. aureus strains are catalase-positive and coagulasepositive, which forms the basis of traditional identification methodology.

Staphylococcus aureus TaqMan PCR Kit, 100 reactions

• Ready to use format, including Master Mix for the target and PCR control to monitor for PCR inhibition and validate the quality
• Specific Primer and Probe mix for the pathogen/virus/viroid of interest
• Primer and Probe mix
• Positive and negative control to confirm the integrity of the kit reagents

Staphylococcus aureus TaqMan PCR Probe/Primer Set and Controls, 100 reactions

• Specific Primer/Probe mix and Positive Control for the pathogen/virus/viroid of interest
• Nuclease-free water
• Can be used together with Norgen’s PCR Master Mix (#28007) or customer supplied master mix

For research use only and NOT intended for in vitro diagnostics.

Details

Supporting Data

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Storage Conditions and Product Stability
All kit components can be stored for 2 years after the date of production without showing any reduction in performance.

All kit components should be stored at -20°C upon arrival.

Component	Cat. TM29350 (100 preps)	Cat. TM29310 (100 preps)
MDx TaqMan 2X PCR Master Mix	2 x 700 μL	–
S. aureus Primer & Probe Mix	280 μL	280 μL
S. aureus Positive Control	150 μL	150 μL
Nuclease-Free Water (Negative Control)	1.25 mL	1.25 mL
Product Insert	1	1