Propargyl-PEG6-NHS ester

Introduction

Usages:
Pancreatic digest of casein obtained with a process to maintain a high level of vitamins and growth factors, it is particularly recommended for a rapid growth and detection of microorganisms present in low concentrations.

Technical specification:
Total nitrogen(TN)—————————≥11.5%
Amino nitrogen(AN) ————————≥3.0%
Sulphuri ash———————————–≤15.0%
Loss on drying——————————–≤6.0%
Chlorides—————————————≤2.0%
PH(5% solution)——————————7.0±0.5
Solubility in 5% water ———————–complete
Nitrites——————————————negative


Storage: Keep container tightly closed, store in a cool, dry place, away from bright light.

Specifications: 500g/bottle; 10kg/bag

500g/bottle;10KG/bag

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

• Excellent separation and purification of cytoplasmic and nuclear RNA
• Convenient and fast spin column format
• High quality and yield of RNA
• Isolate full diversity of RNA (including microRNA) without phenol
• Purified RNA is ready for any application including RT-PCR, qRT-PCR, RNA-Seq, arrays and more
• Cytoplasmic RNA is free of DNA and ready for direct use in RT-PCR/qRT-PCR
• Purification is based on spin column chromatography that uses Norgen’s proprietary resin separation matrix

This kit provides a rapid method for the isolation and purification of both cytoplasmic and nuclear RNA from cultured animal cells and small tissue samples. The kit can be used to isolate all sizes of RNA from the cytoplasmic and nuclear RNA fractions, including all small RNA species without any requirement for phenol.   Included in the kit are sufficient reagents to perform either 50 cytoplasmic RNA preparations or 25 cytoplasmic and 25 nuclear RNA preparations.   Ten samples can be processed in approximately 45 minutes.  This kit is also available in a 100 prep size.    

Background

In certain circumstances it is desirable to be able to isolate fractionated RNA as opposed to total RNA. For example, it may be preferable to isolate only mature, cytoplasmic RNA for some studies on expression profiling. Alternatively it may be desirable to isolate nuclear RNA in order to investigate and study pre-processed (non-spliced) RNA. Furthermore, this kit can be used to isolate RNA for downstream applications where it is necessary to avoid DNA contamination, since the cytoplasmic fraction has been shown to be free of all traces of genomic DNA. 

Details

Supporting Data

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Kit Specifications
Maximum Column Binding Capacity	Up to 50 µg RNA
Maximum Column Loading Volume	650 µL
Size of RNA Purified	All sizes, including small RNA (< 200 nt)
Time to Complete 10 Purifications	45 minutes
RNA Yield HeLa (1 x 106) – Cytoplasmic RNA HeLa (1 x 106) – Nuclear RNA	15 µg ≤ 3.5 µg

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. 21000 (50 preps)	Cat. 37400 (100 preps)
Lysis Buffer J	20 mL	2 x 20 mL
Buffer SK	40 mL	2 x 40 mL
Wash Solution A	38 mL	2 x 38 mL
Elution Buffer E	6 mL	2 x 6 mL
Mini Spin Columns	50	100
Collection Tubes	50	100
Elution Tubes (1.7 mL)	50	100
Product Insert	1	1