What is Chelex extraction used for?
The Chelex method has been used with amplification and typing at the HLA DQ alpha locus to obtain the DQ alpha genotypes of many different types of samples, including whole blood, bloodstains, seminal stains, buccal swabs, hair and post-coital samples.
How do you dissolve Chelex?
Add 50 mM Tris to dry Chelex to make 10 ml of solution….Saline Solution, 0.9% Sodium Chloride (NaCl)
- Dissolve 9 g NaCl (mw 58.44) in 700 ml deionized or distilled water in clean container.
- Add water to bring total solution volume to 1000 ml.
- Make 10 ml aliquots in sterile 15 ml culture tubes.
How do you make a Chelex solution?
10% (wt/vol) Chelex 100: Add 1 g Chelex 100 resin to water (MilliQ or NANOpure) and bring up to a final volume of 10 ml. Store at room temperature, 20–25 °C.
How does Chelex work?
Principle: Chelex resin works by preventing DNA degradation from degradative enzymes (DNases) and from potential contaminants that might inhibit downstream analyses. In general, the Chelex resin will trap such contaminants, leaving DNA in solution. This releases DNA into solution.
What is Chelex solution?
Chelex 100 is a chelating material from Bio-Rad used to purify other compounds via ion exchange. It is noteworthy for its ability to bind transition metal ions. A concentrated solution of metals is obtained by eluting the resin with a small volume of 2 M nitric acid, which protonates the iminodiacetate groups.
Can you autoclave Chelex?
The resin is autoclavable in the sodium form. Chelex 100 resin has found many uses.
What is the best method for DNA extraction?
Phenol-chloroform method of DNA extraction: This method is one of the best methods of DNA extraction. The yield and quality of DNA obtained by the PCI method are very good if we perform it well. The method is also referred to as a phenol-chloroform and isoamyl alcohol or PCI method of DNA extraction.
What are the 5 steps of DNA extraction?
There are five basic steps of DNA extraction that are consistent across all the possible DNA purification chemistries: 1) disruption of the cellular structure to create a lysate, 2) separation of the soluble DNA from cell debris and other insoluble material, 3) binding the DNA of interest to a purification matrix, 4) …
What is the Chelex solution?
Chelex 100 is a chelating material from Bio-Rad used to purify other compounds via ion exchange. It is noteworthy for its ability to bind transition metal ions. It is a styrene-divinylbenzene co-polymer containing iminodiacetic acid groups.
