endo-BCN-PEG8-PFP ester is a PEG linker featuring a BCN group and a PFP ester. BCN is a click chemistry handle used to react with azides on target molecules while the PFP is a good leaving group which is readily displaced by amines to form amides.
endo-BCN-PEG8-PFP ester is a PEG linker featuring a BCN group and a PFP ester. BCN is a click chemistry handle used to react with azides on target molecules while the PFP is a good leaving group which is readily displaced by amines to form amides.
endo-BCN-PEG8-PFP ester is a PEG linker featuring a BCN group and a PFP ester. BCN is a click chemistry handle used to react with azides on target molecules while the PFP is a good leaving group which is readily displaced by amines to form amides.
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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Attogene’s Mercury Lateral Flow Kit can be used for the screening of Mercury in water and food (fish) samples at 10 ppb in a laboratory setting. Unlike the field-based kit, the lab kit is intended for a more technical end user who will be evaluating samples in a laboratory setting. The instructions include method for extraction from food samples.
Mercury contamination is a serious worldwide environmental problem. As it is difficult to detoxify by chemical or biological methods, gradual Mercury ion accumulation in the nervous and cardiovascular systems of the human body can subsequently cause serious diseases. Long-term health consequences of drinking Mercury-contaminated food and water include brain, heart, kidney, lungs and immune system problems for adults, and the physical and mental development delays in infants and children. Attogene’s Mercury Lateral Flow test gives results conforming of 10ppb or greater. Using the supplied pipette, simply fill the vial with your water sample, place the water into the sample port and wait 5 minutes.
Applications for Fish and Shellfish possible:
Mercury Levels in Commercial Fish and Shellfish (1990-2012)
Fish with recognized high concentrations of Mercury:
• Tuna, Grouper, Mackerel, Weakfish, Bluefish, Sablefish, Halibut, Bass Chilean, Shark, Marlin, Tilefish,
Screening of Mercury in water samples at 10 ppb
Format: 10 tests (5 tests/5 controls)
Run Time: 5 Minutes
Methyltetrazine-PEG7-DBCO is a PEG linker with a terminal TCO reactive reagent and a DBCO group. DBCO is commonly used for copper-free Click Chemistry reactions. Methyltetrazine can be used to convert azido-containing peptides or proteins into tetrazine-modified peptides or protein without catalyst or axillary reagents. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Methyltetrazine-PEG7-DBCO is a PEG linker with a terminal TCO reactive reagent and a DBCO group. DBCO is commonly used for copper-free Click Chemistry reactions. Methyltetrazine can be used to convert azido-containing peptides or proteins into tetrazine-modified peptides or protein without catalyst or axillary reagents. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.